S3 E26. The 670cc Predator Renault is faster after getting a muffler and carburetor modifications
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- Опубликовано: 4 июл 2024
- Season 3 Episode 26. Jimbo takes measures to reduce the sound of the exhaust on the 670 cc Renault. Also Jimbo tunes the carburetor for a little extra fuel, will these changes improve the acceleration and MPG of the Renault?
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Jimbo
The walls in our new studio are bare, if you want to send swag please send it to:
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If I heard that sound, before I saw the car, and then saw the car I would be extremely confused. Im sure that's an added bonus of what you do. Keep on pluggin' away Jimbo!
Wow, you're here! Loved your breakdown video last night. Your channel and this one are my weekend entertainment.
I know I'm in the right place when you show up
License plate making perfect sense now
The algorithm presented me with your channel a few months ago, and I can’t get enough of it. It’s scary to know how well the algorithm understands my interests.
All hail the algorithm!🙏🏻
I'm going to suggest it again cut the center out of the carburetor spacer and it will make the carburetor bigger I'll guarantee a horsepower increase and speed
The algorithm knows I'll watch pretty much anything, so I get a great variety of content to choose from.
@@Mr.NiceGuy80same here. I swear my algorithm gets confused and throws me some really random stuff sometimes.
Al Gore and his rhythm know all
An old hot rod trick for infinitely adjusting the same carburetor jet is by drilling out the hole to the desired size but if you go too big you can just solder it closed and redrill it as many times as you need. 👍
That's what I did tuning my bicycle. Kept drilling it out one size at a time then solder and drill the last size down when the spark plug appeared rich.
Y can also ziz zag a copper wire strand into non needle jets to make em smaller. I tuned air bleeds on Hollys this way
For half sizes or special projects I have used my oxy torch nozzle cleaning files due to the size ranges offered
@@geniusanthonywould Dremel drill bits work too?
@@stickit2theman1 too big. Jets sizes are more in the fractions of millimeters range and are typically brass, a soft easily machined metal.
Rumor has it there's 2 dozen Renault 10 670cc Predator engine mods in various stages of development as of today, all due to your inspiration!
Your channel is a refreshing change from the "Let's put an LS in everything!" theme on many other channels.
Don't forget the "K is the way" guys too lol
I'm down for the weird powerplants
@@goosenotmaverick1156 good god, i cannot stand the k swap crowd.
@@frigglebiscuit7484 some of them can be really overbearing. Like I get why it's so common and folks wanna preach, but damn I wanna see something different occasionally. Hence my presence here 😂
LSs are kinda great though...an LS4 with 706 heads, TBSS intake, SSII cam, headers and an F40 6spd trans axle would be wild in that Renault...
@@hendo337 I mean that's cool and all, but where ya gonna put it?
A big V twin in a Kei van or truck would be really wild. Like a wrecked Victory or newer Indian Chief, Scout or FTR1200 engine warmed up.
A Kei truck would be awesome for doing engine swaps. Unfortunately because they are not street legal here in Kansas we cant do projects like that.
@@robotcantina8957can you register Side By Side UTVs? Some states will give you a plate for something like a Kei Truck, Golf cart, a Side by side, a Mahindra Roxor and they are just limited to roads that aren't highways and it seems like you mostly just drive little B roads near you in Kansas. That's how Tennessee does it, I have no idea about Kansas, I would think that with the prevalence of farms those types of vehicles could be used that way with limited road use.
@@robotcantina8957 That's a shame, it's really sad how many states are banning them.
This has become my new Sunday morning show. Normally I would watch power block or bowling on Sunday mornings. I think the Jimbos voice is relaxing 😂
If Mr Rogers had been a gear head.
Agreed, there's something comforting about it.
At first I thought Jimbo sounded a bit like Tom segura but in reality it Tom who sounds a bit like Jimbo
@@MoonsOfEmpire also my favorite comedian 😂😂
@@fl350r it's a beautiful day in the garage today. Do you wanna hand me....that tool box?
THE STOCK INTAKE HAS A TON OF ANGLES AND FLAWS! TWIN CARBS? LOVE YOUR WORK DUDE!❤
that 4 spd honestly has a pretty good gear ratio for small engines. That CVT is putting in some work!
A cheap but very effective EMI attenuator for small engines is a common stainless steel braided plumbing hose like what is used under sinks.
Just use a size that the stock spark plug wires will fit through and cut it to length and ground the braided SS jacket to the block. It won't take all of the noise out but it will knock it down considerably.
Sounds expensive. I was thinking kitchen foil on the plug wires. Also make sure there's a resistor in the ignition line, either resistive wire or a resistive spark plug.
I genuinely cannot wait until that "little" engine becomes a fire breathing high strung motor. Once it's going good, I propose a robot cantina road trip!
Agreed! If it can do freeways well, I'd like to see some real distance on this car just out of sheer curiosity
“Snuffer Knots” are the old school standby … 👏👏👏👏👏
Ahh...that beginning french music. Takes me back to when I was in Paris. So different back then when I was in the circus. I could never get over that exhilarating rush when they shot me from the cannon. Ahhh...good times...
any good french wines to recommend?
That ReKnow is excellent! Just a little secret that we used back in the day of racing Sears riding lawn mowers. If you weld a 1.5 to 2.0 inch adapter to the exit of a straight pipe and then a short radius 90 deg elbow aimed directly toward the ground it will sound about twenty percent quieter to passersby with almost no back pressure. Some of the sound waves reflect off the heel of the elbow and cancels the emerging sound waves and the ground absorbs and deflects some of the rest. Still loud but very cheap and less offensive to none car-person's ears.
All jokes aside! This would be great around the town beater!
My son-in-law had a carb on a 670 get gummed up with old fuel. Rather than rebuild it, he jury-rigged an old carb set up from an old 900cc motorcycle. WOW, did it bring that engine to life !
It sounds much better than a stock Renault 10! It's been great to watch so far. 😊
I'm like a kid again waking up to watch my morning show on TV. 🙂 I love it! Thanks for sharing!
WHO CARES if HOLLLLYWOOD IS on STROKE if we can get good videos and talent like this? Man, this man has talent.!!!
The magneto on my Dad's old John Deere would raise hell with TV reception in my neighborhood in the 70's.
That Predator motor moves that car, I can’t wait to see what it does in my modified garden tractor with pulleys and a Peerless 4 speed 😅
God, the sound this thing makes is just so good. Who knew!
V-Twin's do have a very special sound to them, especially with high compression/lift and a low idle, very satisfying thump thump
To all the people who heard “I can drive a manual without a clutch” you can, he’s right. But it will absolutely wear out the synchronizer rings inside the transmission if you’re not great at timing out when the engine and trans will match speeds. Clutch changes aren’t easy, but they’re way easier than taking the trans apart to change the synchros.
On a YT short comment, I managed to find like 4 or 5 people who claim that they do this on their 5 speeds all the time, and insinuated that I'm a noob for saying it's difficult. Chances of that being 0% aside, you definitely should not do this unless you have a particularly good reason to. Not only will you obliterate your synchros, your grampa style driving of repeatedly dumping 1000rpms in the middle of the road isn't fun for people behind you.
The secret to changing manual gears is matching the rpms of the input shaft to the speed of the desired gear. When you have a functional clutch, this is achieved by allowing the shaft to idle and letting devices known by a variety of names, within the transmission, synchronise the speed before allowing the gears to connect.
(Look up synchromesh, synchroniser ring, dog clutch, cone clutch for explanation of how this works). Without a working clutch, it’s pretty easy to learn the rpms for a given road speed and match them up manually, leading to smooth changes, even when pushing on. The difficulty here is, with the cvt in the picture, you can’t directly control the input shaft rpm by altering the engine rpm. The cvt keeps adjusting the gear ratio constantly, trying to maximise efficiency and, while in neutral, trying to change manual ratio, there’s no load on the cvt and it’s trying to create one. The only time the cvt expects to have no load is when idling with a stationary output. With a rev on, or with rolling output, or both, it tries to get the best efficiency by adjusting the gearing, so you end up bashing the manual gears in, hoping for the best. That’s why it’s so slow and crunchy, when he’s doing that.
Best Sunday morning show
The more I see this car, the more I like it. It's grown on me since it first appeared in your videos.
I've seen some stuff about mufflers and for a performance muffler you want to expand the room for the exhaust to expand. So if you have a muffler that opens up to large chamber and ideally necks down to the size you need that's perfect for performance. Back pressure is just bad Information but a little isn't gonna be end of the world so if it's just a straight pipe exiting the muffler and it's not necked or flush with the body that's okay as long as there's room for the exhaust to expand and lose some pressure before it has to exit that's okay
The new muffler sounds much better. Great job. Looking forward to all the future videos
Mud Bedder
Number 30 viewer here. Boy that Renault brings back memories. When I was a kid we had one of these, alongside a 67 Cadillac Sedan DeVille, a 68 Javelin SST, and a $25 1965 Impala SS 327 that my dad bought for $25 from a neighbor. Remember this was 1975 in Fort Lauderdale. Anyway, my dad would leave for work in this car, even the same color, and as a two-year-old I would make Putt-Putt noises. Well the car ended up getting the nickname Putt-Putt. Just seeing this car in that color in that condition, brought me back the one of the best times in my life. Thank you😁💯
I remember my dad used to have to start it with a knife every morning, all the other car we're big boats and we always made fun of this little one😂
Why would anybody criticise your work?
It's inspired.
Top spec 1300 Renault 10 european spec had 52hp and 17,9s (0-100kph). Renault did miracles with these 1289 engines... some say they had more real power than advertised...
Would be really interesting to see this 1/2 size engine doing at least 0-60mph or 0-100kph in double of the time... good luck with your project!
Yep, I put a 1300 R12 engine into one of these in my mis-spent youth. About 60hp and 100mph from memory. Performance was quite respectable.
"But we mainly drive in an area vastly populated by corn fields.."
But the corn has ears, man!!!!!!
LOL, You are right!... Now I feel bad about making all that noise...
I would have at least liked to hear the first muffler with the baffle in place. You're already adapting up just to fit the muffler, so I doubt the restriction is actually going to make much difference at all. And... it would be really simple to run 2 back-to-back tests to see whether it actually matters or not.
If only I had the money to sponsor it, I'd like to see this guy's level of detail in everything done on a project with a salvaged sport-bike engine. (Since it's not about economy.)
If only there were turbo busa motor somewhere.
@@schrodingersmechanic7622 Plenty of wrecked examples in junkyards around various military bases. Still kinda spendy though
I said it on the 212 and I'll say it here too, a low restriction way to muffle sound is to simply put a turn in the pipe. A U bend will scramble up some of the sound waves and quiet it a lot more than you'd think but even a simple turn down toward the road after the muffler will effectively muffle sounds by using the ground to absorb some frequencies. I have a high revving high output 1800CC 4 cylinder car that's notorious for being very loud with essentially a straight through exhaust and it's not loud at all because the muffler I chose is a glass pack with a big U bend inside of it. All the flow, very little of the noise.
For you, I think a 90 to the driver side, some pipe, then a 90 out the back would do nicely and give you AMPLE room to mount all the muffler you need and then some along the pipe. Sometimes simply stepping the diameter up and down can kill sounds too.
What a ridiculous and fun way to waste some time and have some fun doing it.
I love this idea and your use of a cvt is smart easy and cheap. That's a win, win, win in my book.
4:23 jimbo: this part may be loud
Me: cuts the volume up. 😂😂
JIM! Get one of those old electric Citicars in disrepair and put a two-stroke in it! They don't rust all that bad because of a plastic shell and aluminum frame, so you can usually find them in decent quality, if you find one at all.
😎 🆒️
Does anyone else feel nostalgia seeing that military windshield decal?
Great content and humor, my favorite go to video on Sunday!
Glad you enjoyed it!
You should put a small procharger on it it should give you consistent boost throughout the power band
And then, later, a small vz21 or similar turbo. compound boost!
@@MauricioNestor Nah a jet engine driven turbocharger. So using the exhaust of the jet engine to drive a turbo. Full boost at idle!
@@JCGverI hope someone actually does that. I’d love to see it!
Always great work and narration. Maybe in a future project you could take two v twins and make a v4. Several of those projects on you tube already, but would be neat to see the comparison between v2 and a v4 performance. Need to build a small pickup for a shop truck!!! Love the channel!!
Could be fun to see you dig bit deeper into engine itself
I'm sure you should be able to get your hands on some higher compression pistons that word fit it . Or port and polish the head with Dremel or something.
Been watching since you started the 212 content, maybe the 3rd episode. Awesome to see the projects progressing as fast as they do!
I like the sound of the "stupid carbon fiber" exhaust the best.
Thanks for that rear view mirror tease, and as I've said before, you aren't a bad looking dude and your channel isn't controversial, so I think your channel would be better with you on screen more. Also, an underbody panel would be aero without messing up the appearance, that should be a win-win. Thank you for the excellent content, as usual.
I've been a "car guy" since the mid 19 and 60s, and I love seeing what other car guys are doing. The only thing better than car guys, are CRAZY car guys, and you fill the bill perfectly. This series is FREAKIN' AMAZIN', chock full of car insanity. I am currently planning the build of a Velorex 16-350 clone, using a Honda motorcycle for power. Due to the ridiculous complexity and cost of new cars, I am hoping/planning that the Velorex clone will be my daily driver and the last car I will ever own. You'll have to look up Velorex 16/350 ... they are wonderful little cars.
Clone from scratch or build on something else as base? Just curious 🙃
Those velorex are so weird in a cool way! Canvas for the win!
@@TheStuartstardust Somebody took down my post. It's just a tube steel frame. I'm putting in the entire front end from about a 1968 VW bug with disc brakes and the engine will be an old Honda 500 V twin.
I forgot today was Sunday. 🤦🏾1st thing on my feed when I opened RUclips
It’s turning out to be a fine lil build. 35+mpg in a cool oddball older lil car would be fun honestly. A/C would make it a perfect lil every day! It needs a TAC so you don’t over rev.
Any plans for a Tachometer? I'm really curious to know what RPM the CVT holds the engine at during hard acceleration and is that adjustable? I.e. Putting out peak HP rpm for all the acceleration, or does that only occur at the end of an acceleration run? In other words, how tunable is the CVT? Acceleration run at 3000rpm vs 3600rpm would yield some different results I suspect.
Man i am glade that i found you when you where on the start of the 240cc supercharger concrete mixer engine been watching everything since then
I don't know why I love watching your projects so much, but I do....
6:55 *the corn in the fields “Oowww my ears!” 😂
lol... I must apologize to the corn.
Thanks Jimbo for another cool video. I can appreciate the amount of time you put into these videos, I'm guesing about a 50:1 ratio?
Perceived exhaust sound is (of course) very hard to quantify on a video but, that's the best that can be accomplished with a RUclips video. In trying to quiet down an air cooled engine over the years, it's a difficult task to be sure. Without a water jacket, the engine block rings with every detonation, not to mention the sound of all the reciprocating parts thrashing around inside the engine. One of the best ways to quiet the engine is to limit engine speed to basically a fast idle but, of course, there goes your power.
Good idea to state which mods you will do and not do at the outset, thereby (hopefully) reducing the flood of well meaning modification suggestions.
Jimbo, it would be quite interesting to see what the acceleration numbers are for 100 and 200 meters.
I don’t think Usain needs to worry about getting beaten by your little creation at 100 meters, but it still does surprisingly well for a lawn mower !!
This Renault is a fascinating conversion …
When trucking we used to say grind them until you find them when shifting. 😂😂
Fun. 😁 Don’t worry about haters. I spend a lot of time arguing both sides of a conversation(and winning) just to show my friends that there is no right or wrong, just what fits you or the situation. Enjoying this series.
Credits theme gets me every time.
heh, something you said reminded me of a song, it goes 'let's follow the cops back home... and rob their houses'. a pictim from model-engine-ignition might be nice, help with the noise issue, i'm really only familiar with the regular tims, i was investigating for an ignition to put in a hitmiss motorbike, having a flight of fancy doesn't mean i'm dumb enough to actually do it.
Love the deep dive into the CVT and transmission numbers. This is why I love your channel: you take it step by step and change only 1 or 2 things at a time so we can follow along with the differences they make. Keep it up, Jim!
Holley needs to sponsor Jimbo with a Sniper EFI
It'd be sick if you ran an AR500 or Eaton M90 blower on that 670cc or a 990cc later on, Holley Sniper EFI 1 or 2 bbl system run blowthrough would make it relatively easy.
Jimbo, your work on this project is an inspiration to long-term R10 and R8 owners and drivers. This is especially true for those wanting to keep their cars mobile during the sourcing of hard to find parts. GrantOakes mentions the proof below, that two dozen or so clones may be in the works. Just in case one of those conversions is permanent, and the old engines no longer desired, anyone having one to let go please consider sending me a pm. Oh, and for anyone still wondering about the use of the cvt along with the four-speed gearbox, these is no doubt that that combo is miles ahead of the original three-speed servo automatic ("mystery box") many R10's came with. Cheers!
I found on my 2000 Kawasaki ZR-7 (air/oil cooled 750), that when I fitted a 'Fuel' brand end can (had a Dynojet stage one kit in carbs), then when I had baffles removed yeah, she howled, but, when I had the baffles in, she had a deeper note, BUT, also 'Felt' smoother, more torque low down and just a generally nice ride... Underrated bikes them ZR-7s! 🤔😏
😎🇬🇧
You could also go in 1 without clutch if you stand still, you turn off the engine put it in 1 and start it
The only visual mod this vehicle needs is a little moustache between the headlights 👍.
A cup of coffee and Robot Cantina, my typical Sunday morning.
If you increase the pipe diameter before the muffler you will decrease the sound attenuation. You ideally want as small exhaust tip as possible because this is often where the majority of sound wave reflection happens.
But that would add back pressure. The loss of sound would come with a loss of some hp to the already stressed motor.
@@joe08867 I would debate that an addition that adds an acceptable amount of backpressure to a ~150hp sportsbike will not really affect this 25 hp engine.
@@davidandersson5610 we are talking about a cheap lawnmower engine that pretty much gets beat on daily. that ammount of backpressure damage can build up really fast
isn’t that a notorious myth? Uncle ran a 25hp Kawasaki V-Twin in his John Deere 485 with 1.5 open tubes. He just did it because it was obnoxious and he lives out in the woods. Been going strong 7 or 8 years now. Can’t remember the last time it’s oils been changed. I’d imagine the benefit from 2 mikuni TM Carbs far FAR outweighs whatever “losses” you may get from OHV back pressure
@@satanscilantro4929back pressure damage is a myth. Nothing will happen as long as you literally just have a header on it.
Carburator spacers and Carburator black magics would be dank. Thermal isolation and a longer runner seems like a good start on engine. I'm personally interested in kohler k series single cylenders and the tractor pullers that use them in cub cadets rly rly hot rod those engines. A different cam grind might help with playing when the power come in too. In the 60's king midget micro cars used 12 and 14hp k series the 350 small block of single cylenders
We always called that "splice connecter" a band clamp.
Strong hand tools mag-tab would definitely help with welding projects
Ohhhh, a thrush would have made me chuckle lol
This is one of the best channels on the ol' RUclips!!
My creativity levels have been recharged for the week!
Excellent, drive around with a French licence plate for maximum authenticity!
The staggered jetting maybe needed for the odd ball firing order on that V twin. The only reason they make any industrial engine a v twin is to make them more compact. The old opposed brigs was a much smoother more durable engine. But It was a flat head that ran dirty if they added overhead valves it would have become to wide to work for many industrial application's. So we have v twins. Some motorcycles still have them like Harleys but that's just for the image.
People keep complaining about the CVT? I don't get it. My 2019 Insight has a CVT, gets better gas mileage than a car I know about that has a lawnmower engine and is about half the weight. Has twice the top speed and quieter too, but nevermind; thanks for the amusing content every Sunday morning.
The engine just sounds like a Harley Davidson Sportster even without a muffler!
I still wanna see you add a scoop to the hood on the back, maybe with a cold Air intake to see if you can make more Power at "high" speeds
10:40 hey jimbo, there might be a cheap fix against your EMI problem. try out spark plugs with built in resistor or use one inline resistor on each spark wire. this limits the peak current wich is responsible for your EMI Trouble ;)
I like the way you say CVT jimbo, it just like how Eminem says FCC in without me.
The first one sounded AMAZING
I love your videos!! I'm excited to see what else happens with the 3 cylinder kubota
Keep doing what you're doing! Enjoying the videos.
That car sounds like a lawnmower with an open exhaust, and a V-Twin motorcycle with any of those mufflers!!!
Renault when I was a kid my gramps was a motorhead and one day he came home with a 65 Renault. He painted it flat black and gave it to my aunt's new husband. He cut the roof off the back seat so he could haul washers and dryers home to work on .
Now my other experience with Renault was in the 60s was my best friends parents had a ve bug but next door to their house was their grandparents and they had a white Renault about a 65 they trained it in for ford's new economy car a pinto .lol.
1, 2 and 3 makes it sound like a Harley!
❤The twin cylinder Predator powered 'Reh-Nawlt'.. I'd say just go for efficiency, that'll improve both MPG and performance. Like upping the compression ratio on the engine 😃
Maybe overhaul the transmission too, to fix that reverse and improve any losses there... TBH i just really want to see this classic car be ACTUALLY USABLE heh 😉
I also wonder if they have the alignment correct. Very small amount of toe error and mpg goes fast
More like Draino
really funny you've kept the french front "plaque d'immatriculation"😍
No idea why people would be haters, either you watch and enjoy or you don’t, it’s that simple !
And if you feel you would do it so much better, then you should and it would mean you don’t really have the time to watch the competition anyway…
I look forward to each new video. Keep up the great work!
BUT IT SOUNDS LIKE SO MUCH FUN! but I can get having the harley-esque exhaust become too much
I would love to see another forced induction build with a small 4 stroke engine, or another small diesel, maybe a 2 cylinder. just ignore the people that complain and keep up the fun builds
Never fear the trolls you have some of the best content and among my personal favorite channels that exist on RUclips. I think your content is very professional and great quality. Keep on keeping on 😎
You need to get some merch! I would rock a shirt
I had a second generation King Midget with a CVT like that. I drove it for years and it worked well.
LOL..Those cars are hard on the eyes, but are a great loophole in what passes for street legal. I reckon it would be a lot of fun modifying one of those.
@@robotcantina8957 I wish the 670cc engine were available back when I had it, which was from 1978 to about 1985. I always thought about a motorcycle engine but none were really a good match.
The good old DoD vehicle decal... I don't miss those things.
Lots of European Volvo's and DAF's drives with cvt's. I think it's awesome 👍
Sounds great Jimbo! If the 670cc Predator has the same solid core plug wires as the rest of the Predators, you may be able to change to carbon core plug wires for less RF interference. (For use with the upcoming electronical stuff). I'm sure you've probably already thought of this but I thought I'd throw it out there as a just in case. Love the Renault!
spark plugs with an attenuator built in also help
Best program on RUclips!!!
Still even better than sunday morning cartoons