1000 miles in the books with the mower carb - in 95 degree heat even. do I support running a mower carb as a legitimate thing? absolutely not. has it been entertaining to see how far and how ridiculous I could go with it? indeed it has.
I'd disagree, running your mower carb. seemed to have gotten (legit) ridiculous gas mileage, just not a lot of power. With your talents would like to see you adjust your setup to a smaller displacement engine that doesn't have the fuel requirements. Think with a smaller old engine that use a one-barrel carb. to start with, you might even see a increase in power (& gas mileage) over stock (actually you should..).
Yeah, you should at least run a 50-125cc motorcycle carb so you get an accelerator pump. Would love to see you do this to a 22re or some other carbed 4 banger. Also, you should try and run it a little more rich. Running that lean creates a bunch of NOX.
Glad to see you and your dad spending time together glad to see you posting again and glad to see that old beater still going blow’s my mind how a lawnmower carb worked on that car
idk man . ... if you aint gonna pursue it, please upload the build and PCB specs for use! this is something my 69 single barrel 250 inline 6 would be fun to try on
@@everydayirace and how do you know how far 12 miles is without a speedo or a working odometer? And even if the odometer worked, they are often out of calibration. The only accurate way to work out economy would be to use a measuring wheel and mark out the 12 miles, then use an accurately marked fuel can directly connected to the engine. Anything less is an educated guess like he is taking.
I'm from Brazil, and it's not that uncommon to see cars running with small motorcicle carbs over here with minor to none adjustments. Still, to see a big (by brazilian standarts, since we're used to having 1.0l shitboxes all over the streets) V8 engine running as good as this with a tiny little carb is impressive. Consider me subscribed.
What you describe must be in rural Brasil, this definitely is not the case in Sao Paulo, the cars are modern EFI and newer for the most part. Also tiny vehicles are the norm as I'm sure you know, but that's neither here nor there. Just got back from 33 days in Itaim Bibi SP, good times. Beer is cheap and cold, ordering double fisted with caprihinas and a beer, usually Colorado or Antarctica, unless something cheaper is on the menu. 13-16 reais normal price for 600ml beer at a restaurant, you cannot beat these prices in the USA, especially with the exchange rate being over 5 to 1. Caprihinas cost like $10-$12 in the USA if you go to the local Brasilian Churrascaria, I just drink lemonade instead and save the alcohol consumption for home. Saw a pristine 67 Opala at Shopping Ibirapuera (mall) one Sunday, folks were taking selfies with the car. Cool car.
@@cunninghamer I'm American, but go down there a couple of times a year. Yes, that is correct, Brazilian ethanol is sugar cane derived. And they sell it neat at the pumps - E100. Every fuel station has E100 at the pump, unlike in the USA where E85 is getting hard to find. Wish I had an LS swapped Opala for ripping around down there. Maybe someday.
@@cunninghamer Yup. I got a 1995 Ford Fiesta Mk3 with a 1 liter Zetec Rocam with around 11.4:1 compression and it ran with 0.9 Bar (13 psi) of boost. 105whp and 13kgfm (94lbft) on it. I'm reaching 13.3km/l (31.2 mpg) on it and considering the ethanol cost between 80% of the price of 87-92 octane gasoline per liter or 67-70% of 98-100 octane gasoline, it can be a bargain to run some cars on it. The hydrated ethanol (around 5% water) we have here behaves almost like 100 octane gas. It's pretty hard to knock the engine. I saw cars running with 14:1 compression with hydrate ethanol without any issues.
2 things my Dad did that helped with temps. 1. oil cooler on Dodge Van we often overloaded for work or vacations. He actually mounted it outside the front of Van, worked like a charm, but we got lucky and never had a accident. 2. Water injector on 69 VW Van. Fixed knocking and overheating issues. Was funny when traveling in Nevada we had just got gas and my Dad realized he hadn't filled the water tank and water was used up for drinking as well. So we stopped at next station pulled up to water pump, filled up and was about to pull out when attendant asked if we needed gas. My Dad told him he had installed a new system and it ran on water now. The look on that man's face as we drove off still makes me smile.
Try using the a/c condenser for the trans cooler for a larger cooling area. Worked for me when I put a 351W in a Mustang 2. The original radiator/trans cooler wasn't effective at keeping the trans or engine cool.
Boats have a blower set up to clear the vapors from the engine bay. Most boats have an air scoop on one side and an air exit scoop on the opposite side. The reason I bring this up is (as a mechanic shop owner) I had a customer with a diesel truck come in for repairs. I told him I would get on it in a hour after it cooled down. He said I didn't have to wait, the engine was cool to the touch. Then he took me out and showed me the two boat air scoops he had installed on the hood. And yes, the cooling system was hot but the motor and accessories were cool enough to work on.
When you say Boat Scoops, what exactly do you mean? I have a 72 Dart with twin scoops on a factory hood (not Snorkle style) They are spaced even and symmetrical, facing forward. In the example you are speaking of with the 'boat scoops', would they be asymmetrical and one mounted 180° to the other?
@@williammcewen1466 yes, exactly. Air inlet on driver's side of hood and air outlet on passenger side. (Safety reasons, in case radiator blows you don't want coolant or anything else coating the driver side windshield.) Think about what's going on here. All that air entering the engine bay only has one exit. Down the firewall and under the car. If air in flow is greater than the exit flow then the air slows down and builds pressure (and heat, from radiator, engine, exhaust manifolds). Usually, the manufacture tries to match the radiator inlet area to the firewall exit area (in sq. inches). But, there is a lot of things in this area to cause aerodynamic drag (slow down the air flow). This is offset by the air flow being hot, and therefore thinner (which also tries to rise) but if you measure radiator area you'll find it comes just a little under the exit area available at bottom of fire wall. By adding a boat scoop set to the hood your creating a cross flow across the engine. I couldn't believe it when I saw it, but I could lay my hand on that engine for minutes without discomfort. And it had just driven 15 miles in the city. It was a diesel, so make of that what you will but diesels usually have a lot more iron to the block than a gas engine. All I know is that you'd never cook an egg on that engine. Also, there are a wide range of scoop sizes and designs for a boat so you can find something cool looking. I never tried it myself as I drive a motorcycle, so all I can relate is my experience. The customer swore by it though, he transported boats for a living (big ones). It's how he got the idea, doing long hauls up inclines and watching the temp gauge rise.
A big Yes on this! I have a 2002 Mustang, and it is a hot box! I have ben looking for vents, or a vented fiberglass hood. Boats have those vents mostly for fuel vapor.
@@ravenrock541 OK. Guess I'm going to shop for boat scoops lol I mentioned my 72 Dart only because it has factory scoops. But I have a 90 D100 truck that's a hotbox. It's regularly hits 205° + driving around town and I'm not happy with that. New thermostat didn't help, about to install an aluminum radiator, and possibly fans. Cross flow ventilation might be the ticket. I don't mind cutting a pair of small holes in the hood, it's an 'art truck' anyhow (as my wife calls it) lowered by 6" front and back. I looked up some part #s, like Attwood #1364A3 (found on Amazon) but then I also seen some more flush mounted louvers. Then, there are also fender vents. There are too many vent options! Lol
@@williammcewen1466 Hey, keep me posted. I really want to hear the results. Those atwoods are exactly the type my customer had and they didn't look to bad on the truck (his was white with lots of chrome).
Either way Your Dad must be proud of you Luke and enjoying the heck out of power tour... I know if one of my Kids came up with something interesting like this I'd be blown away.....
Kevin and Luke together again. All is right in the world. The original series with you guys pulling that F-250 out of the woods is what go me into the automotive part of RUclips.
@@frostbite1991 I've been watching Junkyard Digs for awhile, so after hearing him talk to the dyno guys it hit me that Kevin was the cameraman on the video. Had to scroll down to the comments to see if anyone else was verifying it. Good to see the Iowa boys hanging together.
SWEET! Running a car steady speed on a level road takes no power at all. Going uphill/accelerating is the toughest part with this setup. But with that fuel economy you're getting and these gas prices around the world, I think you created a masterpiece! I really want to see the controller.
Put this setup in a hybrid where the electric motors can take over when going uphill .... Or to run a power generator at max efficiency. Just random ideas
@@darthtripedacus1 absolutely how I think about things too. Although, I am reluctant to newer electric technology in general. I'm into multi-fuel hybrids.
There’s already a company that’s done a electric hybrid V8. I don’t think it’s possible for this setup though. It’s so weak it might not have the power to spin all the components as well as make the car move.
I am just totally blown away by this. Been a gear head my whole life, never even dreamed that this would work. Air flow check! Lol love the hood on the roof thing
I have been following this mower carb project in awe and with great admiration. Between you and Uncle Tony I also picked up tons of smart carburetor tricks to get my Hudson running great. I get 26 to 28 mpg with the original side valve L6 stove bolt and an original carburetor & dizzy setup. I do have a TH700R4 behind it though. That probably helps a lot. When I first owned the car the previous owner had a double pumper on it. It was running extremely rich and I would only get around 24 mpg. When running the numbers on volumetric efficiency that standard 170 cfm carb makes much more sense and off idle it holds its own pretty good.
Well, that’s it man,,, 60HP here in phillipines good enough, as long it’ll get u from Pt. A to B not just in one piece but Contentment in ur heart is Goddem’ good to GO!!! Ur great man!!!
Had a 1980 Chevette and found the original window sticker that claimed it would get 41mpg. It never got close to that. Makes ya wonder what they were thinking even back then. Love the vid. 👍
I mean for real, power numbers aside getting that mpg from that engine in that car is amazing. For what it is and what it's doing it's a hell of an accomplishment.
Right on Luke, an experimenting mechanic ran a motorcycle carb on a 283 chevy, thru 2 sandwiched & boxed new heater cores flowing hot coolant thru them to double his best tuned fuel economy (17mpg to mid 30's mpg). Hardly any loss of power And no overheating because the gasoline evaporated thru the heater cores, removing major btu's thru latent heat of evaporation. Combine that with your AA/FRAS "carb cheater" system for the win & less tinkering while driving. Great content Luke!
@@jimthvac100 The overheating issue was not related to the lawnmower carb per se, but to his homemade "stop sign" radiator fan shroud. At idle & low power/speeds the small electric fan worked good, but at highway speeds/more power, temps kept creeping up do to lack of air flow. All this was happening during the annual Hot Rod power tour (which was extra hot & humid.) Luke was uploading videos about these problems as he stopped for repairs/modifications along the trip. See his power tour videos for the details & multiple solutions to fix the over heating. He had overheating on a 4 barrel carb and the lawn mower carb by the way.
I think you shocked a lot of people with this setup and that was part of the reasons you did it isn't it? That fuel milage on a trip like this is nothing to be ashamed of... it was a lot less money out of the wallet at the fuel stops. From reading the stuff Smokey yurich said about his V-twin in a Volkswagen Rabbit and understanding what the higher vacuum levels you have with this setup do to the fuel I can fully see why you are getting the mileage. I look forward to seeing more on your carb cheater system.
This is the end of his “carb cheater system” he’s already gone through the entire build process with every equation and formula to go along with it. Sure I’m times like this saving gas is almost a necessity, but nobody drives a V8 to save gas. He did this out of spite to the naysayers who said he couldn’t on the internet. Bravo.
@@fastinradfordable I think you should learn more of what Smokey did with his Vapor system on his V-Twin that he welded up from Steel. By the way his naysayers said the welded engine block wouldn't work but it did and did quite well I understand. This was done long before there was a VW TDI engine. He then put the system on a Chevy Citation with a V6. You should learn more little known automotive history so you know more what was done before.
I'm looking forward to more on the Carb Cheater, it looks like a great concept. I need to get a 3D printer, 3 baby single carbs with progressive linkage on an inline six might be a thing.
your choice of music rocks, also want to say thanks, i grew up learning the hard way, no school for me, no internet, built many transmissions, engines and other stuff by just messing up to learn. you have a way of teaching that makes it easy for us adhd people :) i am so impressed with the mower carb it gives me hope for the younger generations, im one of those who appreciate the younger people, i learn stuff from my kids and grand kids all the time, thanks for the inspiring videos.
Just for everyone that was saying itd be too rich/lean. A Carb will only pull as much fuel as it can with the air it can flow. The Volumetric Efficiency, essentially how much each cylinder is being filled with an Air Fuel mixture, will be shit but it each cylinder will be equal. Love the experiment Luke! I hope we get to see more of this in some way shape or form
I was thrilled to see this car in Birmingham at the Power Tour stop! As a native Iowan myself, it has been great to watch this whole experiment evolve! To see it in person really made my day!
Always enjoy Uncle Like and his cars/trucks/tractors videos. Interesting content, thought provoking what ifs, and good humorous antics. Thank you for the power tour series
This is so damned cool and I'm very happy for you deciding to just kick back and enjoy the event with your dad. I know I'd be so damned proud of any of my boys doing something like this and then the taking time to just experience with me would be amazing. You're a good young man and we need so many more like you today...
It would be super cool to see you redo the intake with 3 of those carbs!! I know your pain with the printing because I print a ton of stuff too but it would be interesting to see the difference in power.
I know this is an old video but re: overheating issues, try adding a front spoiler. It may sound dumb but hear me out :) You probably have high air pressure right underneath your rad now, keeping the hot air from escaping down there and blocking rad air flow. The spoiler creates a low pressure zone behind it and "sucks" air out of the engine compartment. I was having overheating issues at motorway speeds and just lived with it until I installed a fiberglass hood and noticed it was being pushed up at about 45-50 mph and up, clearly high air pressure. So I added a small diy spoiler, just some 3ft x 6" steel plate right below the rad and it made a huge difference! The hood stays put and cooling has improved immensely, haven't seen it go above thermostat temp yet! And kudos on doing power tour on a lawnmower carb!
Another Iowa boy here, thank you for representing! Very cool experiment, I've been watching your videos and I never thought it would go the distance but I'm really glad that it did. My (Crazy) Uncle was a mechanical engineer and during his Masters program at ISU he built a fuel injection system that could be adjusted while driving (this was back in the 80's). He drove to CA to Hillborne Engineering with it in his 67 Ford pickup back then. I'm not sure what they did with it but I know they sent him a highrise intake for a small block chevy that they built from his research, casting #3. I wish I had that thing, I'm not sure what happened to it.
Love your content! Glad you got to spend time with your dad and make power tour. Glad you can put your mind on something and follow thru. Be brave be safe and keep it up!
Or make some kind of throttle linkage and intake so it opens one mower carb until half throttle and then it opens the other mower carb until full throttle. Then he can get more power and still have the really good mpg
Been kinda wondering about a multi lawn mower carb setup too, as weird as it sounds haha. Not having any enrichment circuits would still hurt performance but there could be improvements over the single carb. I can't help but think if each carb is good for even 50hp, a pair of them with progressive linkage on my 250 chevy inline 6 might be a fun project.
That's pretty cool you probably spend a 10th of what JYD spend on the power tour it really cuts down the hp being such a small carb but you were able to keep up fairly easy after you popped the hood off Congratulations I have to admit I might of been one of the doughters good work I'm happy to take back anything I might of said on Instagram you proved everyone wrong way to go .
I subscribed to your channel because of this lawnmower carb project. You have done an amazing job showing the science behind how it works. Please keep up the videos on this project! Awesome content.
@@cobrajet8866 and add to that 4 cylinder EFI and bang, you have literally half of the world engines :-) Only in America most common engine is V8, rest of the world uses inline 4 with EFI for around 30 years
A genius and a humble one at that, Thanks out of the box why I like him out of all those guys the group he’s probably the most talented in my opinion mainly because he’s so humble and factual and just a cool guy
I've realy loved the Lawn Mower Carb content, great video. I'm glad you and your dad enjoyed Power Tour without letting filming take over the thing, hats off to you!
What would be cool is a second carb with a progressive linkage for wide open throttle scenarios . Make the manifold like a y shape or do it old school like a old mopar crossram on a hemi
This has been a fun project to follow, thank you. I appreciate your approach to explaining timing, A/F ratio and vacuum as a system not individual pieces.
Really good job Luke! Thank you for making this video i was hoping utg would’ve kinda seen what he could do with the concept but he didn’t realy seem too interested in the concept, but he congratulated you on your achievement as well! I drive my 94 f-150 4x4 5.0 5 speed like a tractor too ive been getting 19mpg at best and about 14 at worst. I shift below 2500 rpm’s and when going down hill push the clutch in and let it idle down.
@@SuperBigdanno Best to leave it in gear on a downhill- the truck will stop pulsing the injectors at all on a closed throttle decel. You will use no fuel once the ECM goes into that mode.
@@wyattbrown9506 no need for name calling now is there? Not sure if you have ever drove a manual or not but if you push the clutch in or put in neutral and let the clutch out the engine will return to idle... unless of course you hold the throttle open which would defeat the purpose.
@@ThunderHead289 Now is the timing controlled through a program now? Im sure Ole Luke could program a small actuator to turn that ole school dizzy somehow to adjust on the fly... Good work there brother..
I am curious what the carb cheater can do hooked to a normal carb on the engine, would it be able to help increase gas mileage on it. Obviously I am not expecting 40mpg or anything that high but even a 3-5 boost could be worth while. Glad you enjoyed the power tour with your dad that is what life is about thanks for sharing what you did it is more than ever expected.
it's not likely to make a difference simply because the carb cheater is just making adjustments that a normal carbuerator for a car will make on its own. It would still be cool to see though.
@@zragevii4705 A carb won't make those adjustments, that's the thing. The carb will suck as much fuel as the carb bore and jets allow it to. If it's jetted too rich it'll run dirty rich. With a carb cheater it would open that 'controlled vacuum leak' to try to get more air into the intake manifold to make up for that rich jetting, effectively allowing more air in than the carb's bore would in a normal circumstance. While it won't increase mileage most likely, it'll provide the appropriate AFR to allow full combustion of a rich mixture, so you're getting as much power as possible for the fuel you're pulling in, and not wasting any. A carb that's jetted too lean will not be helped by a carb cheater, and a carb that is properly jetted will only have minimal help from a carb cheater, because it'll only be making small adjustments. On the lawnmower carb there it was a full 2-3 parts rich IIRC, so thus there was a good bit of wasted fuel and power left on the table by not getting it mixed to stoich without the carb cheater.
@@WiscomptonBoys the car cheater was mostly built to adjust for load and other issues that are remedied by accelerator pumps and other parts in a vehicle cabr that a lawnmower carb does not have. you are correct in Stating however that it could help on a vehicle that is jetted far too rich.
I find it interesting that no one is talking about the Rochester quadrajet carburetor. With it's small primaries, it actually was a very fuel efficient carburetor for it's time. Note I owned a Plymouth Cuda 440 6 Bbl, when my enlistment was up with the Army at Ft. Carson Colorado in 1975. I had to drive back home to Allentown Pennsylvania with the car. To get some decent fuel mileage I disconnected the dumps and wired them shut. Like most people who owned those cars it was hard to keep your foot out of it. So I drove with only the center two barrel supplying all my fuel needs and still had decent power. Driving the posted speed limits for that time, with a 4 speed and 4:10 axle ratio in the rear. I managed 17.5 MPG Note: Again I drove with only the center carb supplying fuel. So running a carb with smaller primaries is a benefit to fuel economy. I commend you for demonstrating the benefit of that concept with the lawnmower carb. By using a carburetor with an extremely small venturi and fuel metering circuit Kudo's for doing what engineer's came up with over 40 years ago...
I’m slightly annoyed at your lack of a controlled fuel economy test, it’s nice to see the dyno for sure but the main question here is the mileage in my mind. You should do a controlled test and then put the Holley back on and do the exact same test and compare. You could make a dedicated video for that.
@@TheMopar97 I think he did fine with what he had.. A 74 anything with busted up speedo detection is hard to work with lol.. GPS is probably more accurate than what they had back in the day... I thought he mentioned the holley MPGs in the past.. Maybe he will get indepth with it in a future video.. Happy early Independence Day!!
@@TheMopar97 I think the idea is that it works, not that it gets good mileage. I know id take the 24mpg he got with the 300hp+ Holley setup over the 40+ mpg 60hp setup.
@@joeternus9164 depends on what you want. If you’re going to maximize mpgs and just putt around, why burn double the fuel? Now if you plan on driving sportily and a few burnouts here and there.. then yes big carb
Not only do I call this experiment a success but Krazy Uncle Luke is now forever your name in my household. Hope you guys had a great time and can't wait to see what's next!
You should do that same thing, to say.. An old chevette. Or, a vw Westfalia. I'd buy either from you, before you even started the test. Not for any particular reason. Just because I'd love to see it.
Chevettes are horrible on gas to start with because they are so underpowered. I had an ‘87 for my daily driver back when I was 18 and it only ever got in the teens for fuel mileage, you could watch the gas gauge drop in a good headwind!
Awesome that you got to do that with your dad Luke. Love seeing you pop up on my RUclips notifications, but I also realize you have a life. Thank you for sharing your knowledge with us.
Do you know what engine hp the carb came off of? Maybe a slightly larger carb would be the ticket for a touch more power and only a few mpg down. Even at 35mpg you would be golden and if it had an extra 25hp
He should do a second identical carb with a progressive linkage that starts to crack the second carb at half throttle, and fully opens at full throttle. I figure that would put him somewhere in the 110-125 hp range with the same fuel economy at lower throttle. but enough power to pass and merge into those tight gaps. Dual carbs with that realtime AFR adjuster would be the dream setup
My old man put a single barrel weber carb on a Mopar 273 v8, got great mileage and the power was more than enough for the Ford Bronco he dropped it into while waiting for parts for the ford v8. If memory serves it was one of a twin weber set from a VW 1600 bug engine. The Bronco eventually got it's number matching engine back but that Mopar 273 with a single barrel carb had my old man grinning from ear to ear, it even had enough grunt to pop a wheelie and almost flip the car. We never had access to a dyno so who knows what it made but I am guessing not a lot, under 100hp for sure. A great way to keep that v8 exhaust note and get some decent/great mileage too. Might be worth looking into with today's more efficient carbs, particularly with the cost of fuel right now.
DID HAVE A GOOD LAUGH AT THE DINO TEST . BONNET NOT ON THE CAR FOR PROPER AIR FLOW AND A FAN THAT IS NOT UP TO THE JOB . BUT HAY HO ITS JUST ENTERTAINMENT ARFTER ALL .
Hard to say, gear ratio is not the only factor. I have 5-speed 4-cylinder truck with highway gear (rear end 3.43) pulling a utility trailer with a expanded metal tailgate (parachute) in 5th gear max speed with trailer 60 mph go faster putting it in 4th (direct drive). But that motor likes rpm to make max power: horsepower is the better scenario for that drivetrain. Having higher torque style motor and drivetrain putting a gearvendors' overdrive, might be interesting playing around project. Being 4-speed after 1st gear meaning I think they said to run 2nd would be fine I think. Double check with gearvendors before trying.
@@tolbertgraves2064 Yeah, you don't want to try engaging the Gear Vendors OD unit in 1st. Not enough oil pressure. Also, avoid having it engaged while trying to go in reverse. A lot of the Volvos between the 1960s and the 1990s used the same basic overdrive unit on the back of a 4-speed manual transmission. Did the latter on a 1983 240 Turbo wagon. Had the factory 4th gear switch bypassed, since it was fried. Overdrive switch on the shift knob randomly worked for disengagement. Worked great to engage, but, not so well with disengaging. Pulled into a parking spot, then noticed that a closer spot to the store was available. Went into reverse. Heard a rather loud bang from underneath the car. Overdrive worked for another 8,000 miles before it made some expensive noises after being engaged. Lost "5th" gear, and 1st gear when the car was warm. Was able to get home using 2nd-4th gears. Parked it for a few days, then limped it 50 miles to a friend's shop so I could use his lift and swap the overdrive unit with a spare I had lying around. About 5 miles from his shop, the car started slipping in 4th gear. Made it, though.
I will release the carb cheater which I think is actually beneficial to people. I will not on the mower carb since you can see although it seems "practical", it's also fairly impractical. Can it be done? Yes. Should it be done? No.
@@ThunderHead289 we just want to know the part numbers and names. The rest will sort itself out. There’s no reason not to, Also nobody’s going to blame you for errors and engine problems. It’s peer review.
@@ThunderHead289 So, thrilled that you'll be releasing no.s. I'm sure everyone would gladly pay you for just an information document. Your genius deserves reward in spite of your humility. I know u can't respond to every comment, but I (and sure others as well) would just like to know weight of the car with the V8 and tge drag coefficient if u know it (or can approximate it). Keep up the great work!
Why can't the information you've gained through this experiment be utilized to develop a more efficient atomizer form of a carburetor? We could sure use it with the current price of petrol.
Hey there Luke. Good on you for sharing some quality time with your Dad. I lost mine recently and there isn’t anything I wouldn’t give to have more time with him. Make the absolute most of the time you have with the special people in your life.😢
Авто/Мото
1000 miles in the books with the mower carb - in 95 degree heat even.
do I support running a mower carb as a legitimate thing? absolutely not.
has it been entertaining to see how far and how ridiculous I could go with it? indeed it has.
I'd disagree, running your mower carb. seemed to have gotten (legit) ridiculous gas mileage, just not a lot of power. With your talents would like to see you adjust your setup to a smaller displacement engine that doesn't have the fuel requirements. Think with a smaller old engine that use a one-barrel carb. to start with, you might even see a increase in power (& gas mileage) over stock (actually you should..).
That's the EPA talking, but I get it. Who wants the hassle from those boot-jack thugs!
Yeah, you should at least run a 50-125cc motorcycle carb so you get an accelerator pump. Would love to see you do this to a 22re or some other carbed 4 banger. Also, you should try and run it a little more rich. Running that lean creates a bunch of NOX.
Glad to see you and your dad spending time together glad to see you posting again and glad to see that old beater still going blow’s my mind how a lawnmower carb worked on that car
idk man . ... if you aint gonna pursue it, please upload the build and PCB specs for use! this is something my 69 single barrel 250 inline 6 would be fun to try on
Well it may be hard to get EXACT mpg figures but I think it's safe to say at this point that the mpg is somewhere in the "pretty f'n good" range.
Yep... just need to compare with another running roughly the same engine, it is not about winning on losing but just to compare.
Yeah, I have a jealous motorcycle!
What’s the estimated mpg
🤣👍🏻
@@everydayirace and how do you know how far 12 miles is without a speedo or a working odometer? And even if the odometer worked, they are often out of calibration. The only accurate way to work out economy would be to use a measuring wheel and mark out the 12 miles, then use an accurately marked fuel can directly connected to the engine. Anything less is an educated guess like he is taking.
I'm from Brazil, and it's not that uncommon to see cars running with small motorcicle carbs over here with minor to none adjustments. Still, to see a big (by brazilian standarts, since we're used to having 1.0l shitboxes all over the streets) V8 engine running as good as this with a tiny little carb is impressive.
Consider me subscribed.
What you describe must be in rural Brasil, this definitely is not the case in Sao Paulo, the cars are modern EFI and newer for the most part. Also tiny vehicles are the norm as I'm sure you know, but that's neither here nor there.
Just got back from 33 days in Itaim Bibi SP, good times. Beer is cheap and cold, ordering double fisted with caprihinas and a beer, usually Colorado or Antarctica, unless something cheaper is on the menu. 13-16 reais normal price for 600ml beer at a restaurant, you cannot beat these prices in the USA, especially with the exchange rate being over 5 to 1. Caprihinas cost like $10-$12 in the USA if you go to the local Brasilian Churrascaria, I just drink lemonade instead and save the alcohol consumption for home.
Saw a pristine 67 Opala at Shopping Ibirapuera (mall) one Sunday, folks were taking selfies with the car. Cool car.
dont you guys burn ethanol from cane sugar?
@@cunninghamer I'm American, but go down there a couple of times a year. Yes, that is correct, Brazilian ethanol is sugar cane derived. And they sell it neat at the pumps - E100. Every fuel station has E100 at the pump, unlike in the USA where E85 is getting hard to find.
Wish I had an LS swapped Opala for ripping around down there. Maybe someday.
@@cunninghamer Yup. I got a 1995 Ford Fiesta Mk3 with a 1 liter Zetec Rocam with around 11.4:1 compression and it ran with 0.9 Bar (13 psi) of boost. 105whp and 13kgfm (94lbft) on it. I'm reaching 13.3km/l (31.2 mpg) on it and considering the ethanol cost between 80% of the price of 87-92 octane gasoline per liter or 67-70% of 98-100 octane gasoline, it can be a bargain to run some cars on it.
The hydrated ethanol (around 5% water) we have here behaves almost like 100 octane gas. It's pretty hard to knock the engine. I saw cars running with 14:1 compression with hydrate ethanol without any issues.
Yeah a motorcycle carb would a LOT more tunable, somewhere around a 40mm to 60mm on a v8 I think.
2 things my Dad did that helped with temps. 1. oil cooler on Dodge Van we often overloaded for work or vacations. He actually mounted it outside the front of Van, worked like a charm, but we got lucky and never had a accident. 2. Water injector on 69 VW Van. Fixed knocking and overheating issues. Was funny when traveling in Nevada we had just got gas and my Dad realized he hadn't filled the water tank and water was used up for drinking as well. So we stopped at next station pulled up to water pump, filled up and was about to pull out when attendant asked if we needed gas. My Dad told him he had installed a new system and it ran on water now. The look on that man's face as we drove off still makes me smile.
Try using the a/c condenser for the trans cooler for a larger cooling area. Worked for me when I put a 351W in a Mustang 2. The original radiator/trans cooler wasn't effective at keeping the trans or engine cool.
I'm more interested in the real-time AFR adjustable mod. Something like that would be great on any hotrod with any card.
That's what I think
Exactly deliberately jet it a little rich and have a controlled vacuum leak to correct it... Nice
@@ThunderHead289 alot of us would support your endeavor if you did a fundraiser to make it a product! APP + hardware!
It's really ingenious.
Id buy one in a heartbeat tbh
This is the BEST thing any automotive RUclipsr has ever done! Be Proud and Own that lawnmower carb! We need More lawnmower carb!
You nailed it Luke. Put the phone down and enjoy time with Dad
Boats have a blower set up to clear the vapors from the engine bay. Most boats have an air scoop on one side and an air exit scoop on the opposite side. The reason I bring this up is (as a mechanic shop owner) I had a customer with a diesel truck come in for repairs. I told him I would get on it in a hour after it cooled down. He said I didn't have to wait, the engine was cool to the touch. Then he took me out and showed me the two boat air scoops he had installed on the hood. And yes, the cooling system was hot but the motor and accessories were cool enough to work on.
When you say Boat Scoops, what exactly do you mean? I have a 72 Dart with twin scoops on a factory hood (not Snorkle style) They are spaced even and symmetrical, facing forward. In the example you are speaking of with the 'boat scoops', would they be asymmetrical and one mounted 180° to the other?
@@williammcewen1466 yes, exactly. Air inlet on driver's side of hood and air outlet on passenger side.
(Safety reasons, in case radiator blows you don't want coolant or anything else coating the driver side windshield.)
Think about what's going on here. All that air entering the engine bay only has one exit. Down the firewall and under the car. If air in flow is greater than the exit flow then the air slows down and builds pressure (and heat, from radiator, engine, exhaust manifolds). Usually, the manufacture tries to match the radiator inlet area to the firewall exit area (in sq. inches). But, there is a lot of things in this area to cause aerodynamic drag (slow down the air flow). This is offset by the air flow being hot, and therefore thinner (which also tries to rise) but if you measure radiator area you'll find it comes just a little under the exit area available at bottom of fire wall.
By adding a boat scoop set to the hood your creating a cross flow across the engine.
I couldn't believe it when I saw it, but I could lay my hand on that engine for minutes without discomfort. And it had just driven 15 miles in the city. It was a diesel, so make of that what you will but diesels usually have a lot more iron to the block than a gas engine. All I know is that you'd never cook an egg on that engine.
Also, there are a wide range of scoop sizes and designs for a boat so you can find something cool looking. I never tried it myself as I drive a motorcycle, so all I can relate is my experience. The customer swore by it though, he transported boats for a living (big ones). It's how he got the idea, doing long hauls up inclines and watching the temp gauge rise.
A big Yes on this! I have a 2002 Mustang, and it is a hot box! I have ben looking for vents, or a vented fiberglass hood. Boats have those vents mostly for fuel vapor.
@@ravenrock541 OK. Guess I'm going to shop for boat scoops lol I mentioned my 72 Dart only because it has factory scoops. But I have a 90 D100 truck that's a hotbox. It's regularly hits 205° + driving around town and I'm not happy with that. New thermostat didn't help, about to install an aluminum radiator, and possibly fans. Cross flow ventilation might be the ticket.
I don't mind cutting a pair of small holes in the hood, it's an 'art truck' anyhow (as my wife calls it) lowered by 6" front and back.
I looked up some part #s, like Attwood #1364A3 (found on Amazon) but then I also seen some more flush mounted louvers. Then, there are also fender vents. There are too many vent options! Lol
@@williammcewen1466 Hey, keep me posted. I really want to hear the results. Those atwoods are exactly the type my customer had and they didn't look to bad on the truck (his was white with lots of chrome).
From Leo: You are the first man to have so much fun with a 59 horsepower V-8 car. It has been really entertaining to watch your experiment. Thanks
Every kid with a clapped out Flathead back in the 40s and 50s would strongly disagree.
@@reno145you are absolutely right, I did not get into the game until '66 with big block Plymouths and Chevys, so my perspective was short.
5:09 - That's 170/3.971 = 42.81 mpg! Very impressive from an old school V8.
Either way Your Dad must be proud of you Luke and enjoying the heck out of power tour...
I know if one of my Kids came up with something interesting like this I'd be blown away.....
Dad: "That's My Mower Boy!"
Kevin and Luke together again. All is right in the world. The original series with you guys pulling that F-250 out of the woods is what go me into the automotive part of RUclips.
I've only recently started following both channels, threw me off when I heard Kevin behind the camera lol.
@@frostbite1991 I've been watching Junkyard Digs for awhile, so after hearing him talk to the dyno guys it hit me that Kevin was the cameraman on the video. Had to scroll down to the comments to see if anyone else was verifying it. Good to see the Iowa boys hanging together.
Pretty impressive considering that carb was likely intended for something making about 10bhp.
More like 5, but I get your point.
SWEET! Running a car steady speed on a level road takes no power at all. Going uphill/accelerating is the toughest part with this setup. But with that fuel economy you're getting and these gas prices around the world, I think you created a masterpiece! I really want to see the controller.
Put this setup in a hybrid where the electric motors can take over when going uphill .... Or to run a power generator at max efficiency. Just random ideas
@@darthtripedacus1 absolutely how I think about things too. Although, I am reluctant to newer electric technology in general. I'm into multi-fuel hybrids.
There’s already a company that’s done a electric hybrid V8. I don’t think it’s possible for this setup though. It’s so weak it might not have the power to spin all the components as well as make the car move.
What’s the mpg
@@johnle231 idk they made it to act like a super charger and added like 100hp
I am just totally blown away by this. Been a gear head my whole life, never even dreamed that this would work. Air flow check! Lol love the hood on the roof thing
I would REALLY like to see you and Kevin do another video series together!
I don't care what all, you made a lawnmower carb work on a big engine, takes talent and skill. Great job.
I have been following this mower carb project in awe and with great admiration. Between you and Uncle Tony I also picked up tons of smart carburetor tricks to get my Hudson running great. I get 26 to 28 mpg with the original side valve L6 stove bolt and an original carburetor & dizzy setup. I do have a TH700R4 behind it though. That probably helps a lot.
When I first owned the car the previous owner had a double pumper on it. It was running extremely rich and I would only get around 24 mpg. When running the numbers on volumetric efficiency that standard 170 cfm carb makes much more sense and off idle it holds its own pretty good.
Well, that’s it man,,, 60HP here in phillipines good enough, as long it’ll get u from Pt. A to B not just in one piece but Contentment in ur heart is Goddem’ good to GO!!! Ur great man!!!
Had a 1980 Chevette and found the original window sticker that claimed it would get 41mpg.
It never got close to that.
Makes ya wonder what they were thinking even back then.
Love the vid. 👍
Can't wait to see more on the "Carb Cheater". The lawn mower carb is a hoot, but dynamic A/F system is the real genius on display here.
For sure👍 Thats smart as all get out.Something like this could help ofset fuel costs for in this horrible time
Glad you were able to enjoy the tour with your dad. I sure wish I had done more things like that with mine. Safe travels
My lawnmower was indeed faster than his, peckerheads. 😂
I mean for real, power numbers aside getting that mpg from that engine in that car is amazing. For what it is and what it's doing it's a hell of an accomplishment.
Right on Luke, an experimenting mechanic ran a motorcycle carb on a 283 chevy, thru 2 sandwiched & boxed new heater cores flowing hot coolant thru them to double his best tuned fuel economy (17mpg to mid 30's mpg). Hardly any loss of power And no overheating because the gasoline evaporated thru the heater cores, removing major btu's thru latent heat of evaporation. Combine that with your AA/FRAS "carb cheater" system for the win & less tinkering while driving. Great content Luke!
@Alistair Muir Oh yes! I keep forgetting about that acetone trick, thanks!
Was it smokey? He experimented with a hot air fiero and lots of i6 chevys before his Nascar days.
@@cunninghamer heard of some guy using a high speed brush of some sort to really atomize gas, to get better mpg
I must of missed something what is the over heating issue using this small carb?
@@jimthvac100 The overheating issue was not related to the lawnmower carb per se, but to his homemade "stop sign" radiator fan shroud. At idle & low power/speeds the small electric fan worked good, but at highway speeds/more power, temps kept creeping up do to lack of air flow. All this was happening during the annual Hot Rod power tour (which was extra hot & humid.) Luke was uploading videos about these problems as he stopped for repairs/modifications along the trip. See his power tour videos for the details & multiple solutions to fix the over heating. He had overheating on a 4 barrel carb and the lawn mower carb by the way.
I think you shocked a lot of people with this setup and that was part of the reasons you did it isn't it?
That fuel milage on a trip like this is nothing to be ashamed of... it was a lot less money out of the wallet at the fuel stops.
From reading the stuff Smokey yurich said about his V-twin in a Volkswagen Rabbit and understanding what the higher vacuum levels you have with this setup do to the fuel I can fully see why you are getting the mileage.
I look forward to seeing more on your carb cheater system.
Yee! Yee! Ol' Smokey Yunick & his Hot Vapor Cycle fuel system! Genius extraordinaire!
This is the end of his “carb cheater system” he’s already gone through the entire build process with every equation and formula to go along with it. Sure I’m times like this saving gas is almost a necessity, but nobody drives a V8 to save gas. He did this out of spite to the naysayers who said he couldn’t on the internet. Bravo.
Um a rabbit with a Tdi swap can have 300tq and get 60mpg.
If you turn fuel way down 90+mpg is possible.
V twin gar-bage
@@fastinradfordable I think you should learn more of what Smokey did with his Vapor system on his V-Twin that he welded up from Steel. By the way his naysayers said the welded engine block wouldn't work but it did and did quite well I understand. This was done long before there was a VW TDI engine. He then put the system on a Chevy Citation with a V6. You should learn more little known automotive history so you know more what was done before.
@@krissfemmpaws1029 yunick never heated his vapors to the extremes he claimed in his parents, because that's not physically possible
I'm looking forward to more on the Carb Cheater, it looks like a great concept.
I need to get a 3D printer, 3 baby single carbs with progressive linkage on an inline six might be a thing.
try a single harley 40 mm for your carb o choice. amazon has all kinds of carbs
That’s how Pontiac Tri Power worked on the V8.. only middle cab was open in cruising i think
@@ionbusman2086True and only the middle had a choke.
Thanks for the upload. I got unreasonably excited to see Ike from Cars and Cameras in the video.
your choice of music rocks, also want to say thanks, i grew up learning the hard way, no school for me, no internet, built many transmissions, engines and other stuff by just messing up to learn. you have a way of teaching that makes it easy for us adhd people :) i am so impressed with the mower carb it gives me hope for the younger generations, im one of those who appreciate the younger people, i learn stuff from my kids and grand kids all the time, thanks for the inspiring videos.
Just for everyone that was saying itd be too rich/lean. A Carb will only pull as much fuel as it can with the air it can flow. The Volumetric Efficiency, essentially how much each cylinder is being filled with an Air Fuel mixture, will be shit but it each cylinder will be equal.
Love the experiment Luke! I hope we get to see more of this in some way shape or form
Its rich but he added the vacuum leak to balance it back out out..just like running a carb with the choke on RICH.
I was thrilled to see this car in Birmingham at the Power Tour stop! As a native Iowan myself, it has been great to watch this whole experiment evolve! To see it in person really made my day!
The moment I've all been waiting for!!!
I love that line
@@ThunderHead289 exactly why I said it I say it now also because of your videos lol
@@ThunderHead289 now... just put 2 of the same carbs on the engine .....and draw a reasonable compromise !
Really glad you and your Dad had a good Power Tour, Thnx for taking us along even for a little.
Always enjoy Uncle Like and his cars/trucks/tractors videos. Interesting content, thought provoking what ifs, and good humorous antics. Thank you for the power tour series
Spending the trip with your dad was way better than videos! Congrats on a successful trip!
This is so damned cool and I'm very happy for you deciding to just kick back and enjoy the event with your dad.
I know I'd be so damned proud of any of my boys doing something like this and then the taking time to just experience with me would be amazing.
You're a good young man and we need so many more like you today...
I absolutely love this series keep up the hard work. And those moments with your father are absolutely priceless! Thank you for sharing what you did!
It would be super cool to see you redo the intake with 3 of those carbs!!
I know your pain with the printing because I print a ton of stuff too but it would be interesting to see the difference in power.
I know this is an old video but re: overheating issues, try adding a front spoiler. It may sound dumb but hear me out :)
You probably have high air pressure right underneath your rad now, keeping the hot air from escaping down there and blocking rad air flow.
The spoiler creates a low pressure zone behind it and "sucks" air out of the engine compartment.
I was having overheating issues at motorway speeds and just lived with it until I installed a fiberglass hood and noticed it was being pushed up at about 45-50 mph and up, clearly high air pressure. So I added a small diy spoiler, just some 3ft x 6" steel plate right below the rad and it made a huge difference! The hood stays put and cooling has improved immensely, haven't seen it go above thermostat temp yet!
And kudos on doing power tour on a lawnmower carb!
Black garden edging
Excellent video! Glad you made it through Power Tour. Hope to be there next year. Looking forward to the next video on the lawn mower carb.
Another Iowa boy here, thank you for representing! Very cool experiment, I've been watching your videos and I never thought it would go the distance but I'm really glad that it did. My (Crazy) Uncle was a mechanical engineer and during his Masters program at ISU he built a fuel injection system that could be adjusted while driving (this was back in the 80's). He drove to CA to Hillborne Engineering with it in his 67 Ford pickup back then. I'm not sure what they did with it but I know they sent him a highrise intake for a small block chevy that they built from his research, casting #3. I wish I had that thing, I'm not sure what happened to it.
Oh yeah time spent with your dad..... priceless...
Amazing engineering! Thanks for sharing this with us!
Love your content! Glad you got to spend time with your dad and make power tour. Glad you can put your mind on something and follow thru. Be brave be safe and keep it up!
some lawn mowers have dual carbs, would be interesting to see how that would work with the auto carb adjuster 5000
Or make some kind of throttle linkage and intake so it opens one mower carb until half throttle and then it opens the other mower carb until full throttle. Then he can get more power and still have the really good mpg
@@bigfootandbananaman4746 that’s a great idea
@@bigfootandbananaman4746 kinda like a two barrel setup?
Been kinda wondering about a multi lawn mower carb setup too, as weird as it sounds haha. Not having any enrichment circuits would still hurt performance but there could be improvements over the single carb. I can't help but think if each carb is good for even 50hp, a pair of them with progressive linkage on my 250 chevy inline 6 might be a fun project.
@@KrashKan intek vtwin have dual barrel carbs so yea
That's pretty cool you probably spend a 10th of what JYD spend on the power tour it really cuts down the hp being such a small carb but you were able to keep up fairly easy after you popped the hood off
Congratulations I have to admit I might of been one of the doughters good work I'm happy to take back anything I might of said on Instagram you proved everyone wrong way to go .
I subscribed to your channel because of this lawnmower carb project. You have done an amazing job showing the science behind how it works. Please keep up the videos on this project! Awesome content.
You’re a hell of a mechanic, great job!!
I love the whole concept of beating the naysayers and getting 40+ MPH, I think you could be on to something.
yeup I think you are right. image a 4 cylinder with thin oil, lots of bearing clearance and no junk in the trunk.
@@cobrajet8866 and add to that 4 cylinder EFI and bang, you have literally half of the world engines :-) Only in America most common engine is V8, rest of the world uses inline 4 with EFI for around 30 years
A genius and a humble one at that, Thanks out of the box why I like him out of all those guys the group he’s probably the most talented in my opinion mainly because he’s so humble and factual and just a cool guy
Great video series! You've sparked a lot of interest into fuel economy for sure. Thanks!
Excellent video update
More than enough!
Great memories made!
This has been an awesome experiment!
I'm still thinking a tunnel ram with a lawn mower or small SU carb in the middle would be very interesting.
Add mower carb to sky ram!
Dads are always fun to have around. Mine is gone and I always miss him. Great videos and and enjoy watching.
Really great story, so glad you got this on the dyno particularly impressed with the torque figure, good job thanks
I've realy loved the Lawn Mower Carb content, great video. I'm glad you and your dad enjoyed Power Tour without letting filming take over the thing, hats off to you!
I think you definitely proved your point 😂 Well done!
What would be cool is a second carb with a progressive linkage for wide open throttle scenarios . Make the manifold like a y shape or do it old school like a old mopar crossram on a hemi
I offered that idea to see if he'd bite. He didn't. Because that's basically how a normal 4 barrel works.
Thanks for the update. Glad to see you able to make some good memories with your Dad.
This has been a fun project to follow, thank you. I appreciate your approach to explaining timing, A/F ratio and vacuum as a system not individual pieces.
Yesssss!!! Been waiting for this! 😀 Glad y'all made it on the Power Tour this year and put all those naysayers to rest!
Really good job Luke! Thank you for making this video i was hoping utg would’ve kinda seen what he could do with the concept but he didn’t realy seem too interested in the concept, but he congratulated you on your achievement as well! I drive my 94 f-150 4x4 5.0 5 speed like a tractor too ive been getting 19mpg at best and about 14 at worst. I shift below 2500 rpm’s and when going down hill push the clutch in and let it idle down.
Dont just push the clutch in and hold it, put the truck in nuetral and release the clutch as it is way easier on the throw out bearing.
@@SuperBigdanno Best to leave it in gear on a downhill- the truck will stop pulsing the injectors at all on a closed throttle decel. You will use no fuel once the ECM goes into that mode.
@@wyattbrown9506 still going to idle either way so why not save the throw out bearing
@@SuperBigdanno What? No, it's not going to idle. It'll be at cruise RPM. Weirdo.
@@wyattbrown9506 no need for name calling now is there?
Not sure if you have ever drove a manual or not but if you push the clutch in or put in neutral and let the clutch out the engine will return to idle... unless of course you hold the throttle open which would defeat the purpose.
Well done Luke. Glad you made it. 👍
This by far is one of the coolest things I've ever seen. I'm really glad to see you progress with operation Mower Carb :)
Love the maverick
Should have keep all receipts for the lawn mower carb for the whole event and see how much it drank.
I think it is cool what you did with the lawn mower carb! I am from Iowa originally and enjoy watching your videos. Keep up the good work!
Glad to see you guys are doing great and enjoying your time with your Dad!
Now make a switchable plenum so you can go lawnmower to holly with a button
The ignition timing required to make the holley optimal is notably different than that of the mower carb unfortunately.
@@ThunderHead289 Now is the timing controlled through a program now?
Im sure Ole Luke could program a small actuator to turn that ole school dizzy somehow to adjust on the fly... Good work there brother..
I am curious what the carb cheater can do hooked to a normal carb on the engine, would it be able to help increase gas mileage on it. Obviously I am not expecting 40mpg or anything that high but even a 3-5 boost could be worth while. Glad you enjoyed the power tour with your dad that is what life is about thanks for sharing what you did it is more than ever expected.
it's not likely to make a difference simply because the carb cheater is just making adjustments that a normal carbuerator for a car will make on its own. It would still be cool to see though.
@@zragevii4705 A carb won't make those adjustments, that's the thing. The carb will suck as much fuel as the carb bore and jets allow it to. If it's jetted too rich it'll run dirty rich. With a carb cheater it would open that 'controlled vacuum leak' to try to get more air into the intake manifold to make up for that rich jetting, effectively allowing more air in than the carb's bore would in a normal circumstance. While it won't increase mileage most likely, it'll provide the appropriate AFR to allow full combustion of a rich mixture, so you're getting as much power as possible for the fuel you're pulling in, and not wasting any.
A carb that's jetted too lean will not be helped by a carb cheater, and a carb that is properly jetted will only have minimal help from a carb cheater, because it'll only be making small adjustments.
On the lawnmower carb there it was a full 2-3 parts rich IIRC, so thus there was a good bit of wasted fuel and power left on the table by not getting it mixed to stoich without the carb cheater.
@@WiscomptonBoys the car cheater was mostly built to adjust for load and other issues that are remedied by accelerator pumps and other parts in a vehicle cabr that a lawnmower carb does not have. you are correct in Stating however that it could help on a vehicle that is jetted far too rich.
Such a cool story. Great to watch along on the trip. And great you some quality time with your Dad.
I find it interesting that no one is talking about the Rochester quadrajet carburetor. With it's small primaries, it actually was a very fuel efficient carburetor for it's time.
Note I owned a Plymouth Cuda 440 6 Bbl, when my enlistment was up with the Army at Ft. Carson Colorado in 1975. I had to drive back home to Allentown Pennsylvania with the car.
To get some decent fuel mileage I disconnected the dumps and wired them shut. Like most people who owned those cars it was hard to keep your foot out of it.
So I drove with only the center two barrel supplying all my fuel needs and still had decent power.
Driving the posted speed limits for that time, with a 4 speed and 4:10 axle ratio in the rear. I managed 17.5 MPG Note: Again I drove with only the center carb supplying fuel. So running a carb with smaller primaries is a benefit to fuel economy. I commend you for demonstrating the benefit of that concept with the lawnmower carb. By using a carburetor with an extremely small venturi and fuel metering circuit Kudo's for doing what engineer's came up with over 40 years ago...
I’m slightly annoyed at your lack of a controlled fuel economy test, it’s nice to see the dyno for sure but the main question here is the mileage in my mind. You should do a controlled test and then put the Holley back on and do the exact same test and compare. You could make a dedicated video for that.
Didn't he do that in a past video?
@@feelingold2995 kinda… but not controlled. Almost like he’s going out of his own way to not truly test the fuel economy… it is strange. 🥴
@@TheMopar97 I think he did fine with what he had.. A 74 anything with busted up speedo detection is hard to work with lol..
GPS is probably more accurate than what they had back in the day... I thought he mentioned the holley MPGs in the past.. Maybe he will get indepth with it in a future video..
Happy early Independence Day!!
@@TheMopar97 I think the idea is that it works, not that it gets good mileage. I know id take the 24mpg he got with the 300hp+ Holley setup over the 40+ mpg 60hp setup.
@@joeternus9164 depends on what you want. If you’re going to maximize mpgs and just putt around, why burn double the fuel?
Now if you plan on driving sportily and a few burnouts here and there.. then yes big carb
Bro you are my hero! I’m super jelly of that mpg! you think a setup like that may work on an inline 6?
Of course it would. His experiment shows this will work on any carb’d automotive engine.
Not only do I call this experiment a success but Krazy Uncle Luke is now forever your name in my household.
Hope you guys had a great time and can't wait to see what's next!
Amazing it makes that much power, full stop. That sounded an awful lot like Kevin from Junkyard Digs in background at the gas station.
You should do that same thing, to say..
An old chevette.
Or, a vw Westfalia.
I'd buy either from you, before you even started the test.
Not for any particular reason.
Just because I'd love to see it.
Chevettes are horrible on gas to start with because they are so underpowered. I had an ‘87 for my daily driver back when I was 18 and it only ever got in the teens for fuel mileage, you could watch the gas gauge drop in a good headwind!
@@CarswithNash my first car was an 82 chevette.
Pretty heavy cars.
Just wondering what they'd do, with that carb setup..
Yeah, the person recording sometimes misses the thing being recorded.
Awesome that you got to do that with your dad Luke. Love seeing you pop up on my RUclips notifications, but I also realize you have a life. Thank you for sharing your knowledge with us.
This is one of the coolest car things I've seen ol son. I appreciate it. It's been a fun ride to watch on the Tubes.
Do you know what engine hp the carb came off of? Maybe a slightly larger carb would be the ticket for a touch more power and only a few mpg down. Even at 35mpg you would be golden and if it had an extra 25hp
He should do a second identical carb with a progressive linkage that starts to crack the second carb at half throttle, and fully opens at full throttle. I figure that would put him somewhere in the 110-125 hp range with the same fuel economy at lower throttle. but enough power to pass and merge into those tight gaps. Dual carbs with that realtime AFR adjuster would be the dream setup
A return fuel system would keep your fuel from hanging out under that hood so long and picking up to much heat..
Search "fuel return line" and see who has made most of the leading videos lol
@@ThunderHead289 yeah buddy you got that covered lol
My old man put a single barrel weber carb on a Mopar 273 v8, got great mileage and the power was more than enough for the Ford Bronco he dropped it into while waiting for parts for the ford v8. If memory serves it was one of a twin weber set from a VW 1600 bug engine. The Bronco eventually got it's number matching engine back but that Mopar 273 with a single barrel carb had my old man grinning from ear to ear, it even had enough grunt to pop a wheelie and almost flip the car. We never had access to a dyno so who knows what it made but I am guessing not a lot, under 100hp for sure.
A great way to keep that v8 exhaust note and get some decent/great mileage too. Might be worth looking into with today's more efficient carbs, particularly with the cost of fuel right now.
I've thoroughly enjoyed your videos, learned a bunch of things!
DID HAVE A GOOD LAUGH AT THE DINO TEST . BONNET NOT ON THE CAR FOR PROPER AIR FLOW AND A FAN THAT IS NOT UP TO THE JOB . BUT HAY HO ITS JUST ENTERTAINMENT ARFTER ALL .
I wonder what fuel mileage would do with a 5 speed
Hard to say, gear ratio is not the only factor.
I have 5-speed 4-cylinder truck with highway gear (rear end 3.43) pulling a utility trailer with a expanded metal tailgate (parachute) in 5th gear max speed with trailer 60 mph go faster putting it in 4th (direct drive).
But that motor likes rpm to make max power: horsepower is the better scenario for that drivetrain.
Having higher torque style motor and drivetrain putting a gearvendors' overdrive, might be interesting playing around project.
Being 4-speed after 1st gear meaning I think they said to run 2nd would be fine I think.
Double check with gearvendors before trying.
I’m thinking what would a modern Dodge Charger Hemi do with this carb. The auto can be made to work standalone.
@@tolbertgraves2064 I agree completely, but with it making all of it's power down low looks like it would benefit from a 5 speed
If Luke decides to try it on his F100, then we'll be able to find out. That truck has a T5 in it.
@@tolbertgraves2064 Yeah, you don't want to try engaging the Gear Vendors OD unit in 1st. Not enough oil pressure. Also, avoid having it engaged while trying to go in reverse. A lot of the Volvos between the 1960s and the 1990s used the same basic overdrive unit on the back of a 4-speed manual transmission.
Did the latter on a 1983 240 Turbo wagon. Had the factory 4th gear switch bypassed, since it was fried. Overdrive switch on the shift knob randomly worked for disengagement. Worked great to engage, but, not so well with disengaging. Pulled into a parking spot, then noticed that a closer spot to the store was available. Went into reverse. Heard a rather loud bang from underneath the car. Overdrive worked for another 8,000 miles before it made some expensive noises after being engaged. Lost "5th" gear, and 1st gear when the car was warm. Was able to get home using 2nd-4th gears. Parked it for a few days, then limped it 50 miles to a friend's shop so I could use his lift and swap the overdrive unit with a spare I had lying around. About 5 miles from his shop, the car started slipping in 4th gear. Made it, though.
awesome vid, glad ya had a good trip, miss goin up an down the west coast with dad hittin the light houses an museums
Congratulations on making it with the lawnmower carb. It's gotta be a first ever. Thanks for the video 👍
Release the files please.
Release the part numbers and names. Please hurry. We want to recreate your work.
I will release the carb cheater which I think is actually beneficial to people. I will not on the mower carb since you can see although it seems "practical", it's also fairly impractical.
Can it be done? Yes.
Should it be done? No.
@@ThunderHead289 we just want to know the part numbers and names. The rest will sort itself out.
There’s no reason not to,
Also nobody’s going to blame you for errors and engine problems.
It’s peer review.
@@bromike given that it’s his custom design and software there’s no names or part numbers.
@@bromike I would think the carb part would be the least of your worries on replication.
@@ThunderHead289 So, thrilled that you'll be releasing no.s. I'm sure everyone would gladly pay you for just an information document. Your genius deserves reward in spite of your humility. I know u can't respond to every comment, but I (and sure others as well) would just like to know weight of the car with the V8 and tge drag coefficient if u know it (or can approximate it). Keep up the great work!
Thank you for sharing and your APPRECIATION Luke.
Love the tour in lawnmower carb video. Lots of information on carburetors
Why can't the information you've gained through this experiment be utilized to develop a more efficient atomizer form of a carburetor? We could sure use it with the current price of petrol.
Nice job making it on power tour that car is a piece of junk
Awesome data gathering!! Thanks for sharing!
You put the electronics down and were just in the moment., I love that and more people need to do that. T
Total respect for you dude.
Luke that's awesome!! What would be really cool is a Six Pack of Lawnmower carbs sitting up there!!!
Hey there Luke. Good on you for sharing some quality time with your Dad. I lost mine recently and there isn’t anything I wouldn’t give to have more time with him.
Make the absolute most of the time you have with the special people in your life.😢
Grand time with your Dad glad you shared it with us. Maybe next year Kevin can take you all in his lovely motardhome lol thanks again
I'm glad you had a wonderful trip. Cool video!
Amazing carb set up!