500cc Duromax Engine Unboxing
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- Опубликовано: 1 окт 2023
- Today we unbox and take a first look at the new Duromax 500cc single cylinder engine. This is going to be our new favorite big block engine. This engine features a 94mm bore with a 72mm stroke. Has a 41mm intake valve size and 35mm exhaust valve size. This is a hoss of an engine. Would you get one over all the other big blocks on the market?
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Would love to see a build on this engine. Also would like to see how it compares with the 440 on the dyno.
I purchased the 500cc for my boys go-kart. I think it was a 212 predator that was on it. I had to modify this small go-kart a lot to make the Duromax fit but I think it will work. I've never done any of this before. This has definitely been an experience. The go-kart is only 150 pounds.
How did it turn out?
I’ve had mine for a few weeks now . Very solid engine . It’s on my mud boat . Paired with a mudskipper twister on a 1432 jon boat running 33mph bone stock !
I’m mad I just bought a 459cc and this came out three days later
Nice! I was thinking about doing the same setup on my 1436. What prop are you running?
@@DBD801 sps T76
@@Minibikes_of_Augusta did you have to get the adapter kit from mudskipper to run that?
@@DBD801 yes
I cannot wait to see the test videos on this. Should be an absolute unit. Also cannot wait to see what kind of aftermarket support will be available.
Shout out to the camera genius, you film at Hollywood level. Every time I watch redbeard, you two are like family to me.
I wanna say the cones on the airbox are cyclone traps that help spin a bunch of the large dirt out of the air stream....Honda has cyclone filters on some of their GX engines. I can't wait to see this big boss hoss rip!
You are correct. I've seen similar setups on military vehicles
I enjoy the channel very much, well done to you guys.
One thing I want to touch on is the exhaust valve sizes, exhaust valves are smaller because the cylinder is under pressure when the exhaust valve opens, so the pressure differential is very large compared to what occurs during the intake stroke. Because of this much larger pressure differential you don't need as large of a valve to expel the gasses, the gasses are more readily forced out. Cheers
@@kevinwest3689 I can’t think of any cylinder head that has an exhaust valve bigger than an intake valve, I think you might have something confused.
Those cylinders on the intake are like something that is on my Duramax. On my Duramax it catches water and debris before reaching my filter, and falls out the bottom. Can’t wait to see the power it makes!
Dura? or Duro?
Truck engine or cart engine?
@chadmills5400 snorkel that baby. Put the air intake as high as possible and blame redneck innovations.
The cups in the air filter are water traps.The holes are drains.That's a pretty good idea for all weather uses.It's pretty cool that Duromax has been producing so many good designs for us...uhhh,...for many normal and industrial apps ;)
Bike guy, you could be right, however I believe they are more specifically used to help prevent the filter from being clogged with larger particles too quickly (lengthening the usable service limits). Dusty sandy conditions can play hell on small engines, especially at construction sites. And they run just fine in the rain using the standard air filter cover found on Honda & clone type engines. Just my unsolicited 5 cents! 🍻
(Cyclonic pre-filtering similar to what's used on those fancy vacuum cleaners, lol)
Man I’m pumped about this one and I love when you do engine builds! Thank you so much 🦾
I learn so much from this channel
the air intakes are to "spin" dust out of the intake air. its a features used in a lot of 4x4 air intake systems to reduce load and extend air filter life
Don’t feel anything you said is pointless ! Someone will always need that info.
Thanks for all the videos, we all 💕 them !
What have you found to be the best carb for the buck $
I’m older and the mukuni clones have the hi/low mix on the bottom😢
It’s just not easy for me?
Any info on this will be so appreciated, I’ll tell ten people how cool you are 👍✌️
Wife is awesomely smart!
I don’t think 25% people know about exhausting!
Great job guys
Man I love big displacement singles. I can't wait to watch your testing on that thing. I just ordered a 440 now I want the 500. Also I wonder if the intake pocket things spin air to clear out dust. We had something like that on generators
I believe it is a type of cyclonic pre-filter, 🍻
I love the 440 I own two of them might have to try the 500 out on my next snowblower build
Yupp. Water/Particle catch turbines. These are standard on concrete saws
Awsome vid thanks
Thats a beast right out of the box......
Great review….new subscriber….enjoying hour work. Will see about one if these on a new buggy
So those cones on the intake look really similar to the cyclones you see on vacuum cleaners and the like. I think air is primarily supposed to come in the side, then water and debris gets flung out and falls down through the holes in the middle. Actually sort of clever if they don't just get immediately clogged.
Interesting. I didn’t know what in the world they could have been for.
That was my thought as well. Debris gets spun around and falls out rather than going on to plug the filter media.
More it's just like Christmas are can't wait to see that puppy up and running. ✌️💛🙏😅😅
Those are cyclone separators on the intake. As the dirt is spun out of the air it falls out the holes on the white cones.
That's quite the thumper! I (Yamaha FJ1200) used to go on day trips with my neighbor (1200 Gold Wing) and his wife who rode a Suzuki 600 single with a straight pipe. She kept up pretty well just cruising, but I would occasionally have to get a few miles ahead because it was stupidly loud and blew fireballs out the exhaust on deceleration.
I guess what I'm saying is, a 500cc seems a bit large for a "mini-bike", but if we could get it to turn 12,000 RPM it could be fun on a go-kart. lol ;)
Im thinking about build a Liberty cart 2 seater and will watching for more info on this motor. If the after market starts producing rods ect i might have to check this motor out. Has a beefy connecting rod as it is.
I've been anticipating one of these for my Ghost Face Killahwatt build. Should I just get a 440? I mean two ponies and I plan on a 34mmMikuni and a torque tube header.
I'm very interested in the 500. Please find out how much power it can make. It just became a candidate for something special I want to build. If seems like doubling the rated power isn't asking much for most utility engines and a reliable 40 HP will be enough for me.
great video,is the mount holes the same as a 13 horse power Honda ? would like to swap engines,,,
Yes I am wanting to use one
You build one of these yet? Looking to see what kind of improvements you can make to this engine.
Knowledge is power!!!
It looks like that intake has three cycloidal dust separators. Just another layer of filtration.
Definitely interested
That weird intake is similar to a Dyson vacuum or a gold refinement machine, it sucks air in a circle and up allowing other heavier particles to fall out the center like a reverse tornado.
Hey redbeard can you do a video of parts that will fit on this engine please?
FULL BUILD!!
Im in the middle of a go kart built i was going 440 but i might go 500 depending how this works out for you..ready to see the outcome
Ok thank you.💯👍
Is it possible you can build that to the specs of 500 CC Honda? Just wondering cause I had an 85 , and it was a screamer.
I need one but I'm in CA so have to have someone else get it. Wonder what it would make at 6000 rpm with a cam reground and head ported
Does it have a built in alternator for the electric start version?
Need to replace a blown GX270 engine in a go-kart. Would this bolt in? I have plenty of space. More concerned about bolt patterns. Thank you in advance.
Greatly appreciated, Mr. Red Beard, I do have a question for tall. Would you say it is without a fuel tank and filter if anyone has this information I would appreciate it.
Honda makes the cyclone air box. We run a gx390 on a floor saw with it.
I wanna see this on a mini bike 👍😎... some fella mentioned turbski 🎉 that's out of my wheel house lol
I’m thinking about buying one for my daughters go kart how fast does it go stock
I know this is late but does this have the same mounting plate as the predator 420
Boonjour!Omg. you shared breathtaking sharing!
Looks like they got it so close to being awesome and just needed that rod bearing and a starter. I'm to old to be pulling cords. 😆👍👍
They do have the electric start version. We just got this one first.
ANY UPDATES ON SUPERCHARGEd 440
Wonder why you dont see these on snowthrowers as much. Would really get the snow going!
I'm sure it never happens but 670 single cylinder from Duramax or something that size in a single cylinder that would be a absolute beast
Do have and low speed of that engine..?And the engine was available in the Philippines..?
I agree that torque number doesn’t make sense. I think the 459 predator is around 24.5 ft-lbs I can’t imagine a engine that is similar and 10% larger making significantly less.
Does it have a cast iron connecting rod?
Haven't had a "jeepers" in while. 😊😊
Cool videos
That's a pretty tight head bolt. Even my DRZ400 only has 34ft/lb as the head bolt spec.
I thought it was as well.
Yea I want one
Oh Boy a Thumpin gravy bones engine 😮 ☮️
This is long, get a cup of coffee, a honeybun, a beer, whatever.
I’m not positive about this, however the purpose of the oversized air box with the three intake ports, may have a two fold purpose. The first, the three small intake ports, as DuroMax doesn’t know that exact end use of their engines, may be large debris excluders. Grass clippings, large wood chipper dust, etc. and they look as if they’re molded to create three small swirl chambers that could have something to do with dust separation.
Secondly, air intake noise can be loud. Automotive engine engineers spend countless hours changing the note/sound of intake air for various reasons. In automotive and light trucks, many times it’s for a more throaty sound. Who knows what you’re running, as long as it sounds tough. Also a deeper note has a longer wave length. Longer sound wave lengths are easier on the ear that a than a short wave length, higher note. Deeper notes can be achieved with a large air box with internal baffles. Maybe the round conical chambers also have something to do with the note. To me, it would be worth a call to your DuroMax supplier. The more you know…
Here’s a tip those with large loud compressors in their shops.
In a shop I owned, I completely changed, made much quieter, a large twin V two stage compressor by installing, of all things a 200 series Volvo rear muffler on the intake. The first stage inlet, where the original filter was mounted was the same diameter as the muffler inlet and outlet. I welded some brackets to securely hold the muffler to the top of the belt guard, and ran a length of 2” Gates fuel fill hose between the two. Then installed the original air filter on the other end of the muffler. It made a huge difference! You could cary on a normal conversation, without raising voices right next to the compressor.
Another noise reducer is to mount the compressor, on large rubber motor mounts.
(Again with the Volvo aftermarket parts) I used four right side (large) mounts with studs centered on each side. Mark where the leg mounting holes are on the floor, and drill holes into the concrete deep enough for the studs. Hopefully you know what to do with the other side of the mount.
In the end, the decibels were greatly reduced with the intake muffler, and rouge vibration noise from the legs being on the floor was eliminated. It also kept the compressor from wandering out of its assigned work space.
Hope there was some good in all of my old man ramblings.
Really like your videos!
Bart
So this will be going on an 80/105 Minibike?
So do I need a clutch?
think this could fit on a Coleman ct200 without modifying the frame?
I think it would
This is what I was thinking, my ct200 needs a big block
It's a typo or you overlooked something. It is 22.87 Nm (Newton Meters) 22.87 ÷ 0.73756214927727 = 31.00755647833893 ft. lbs. but it should be stock with exhaust and intake 25 hp + 37.5 ft. lbs. and 500cc engines range from 31 to 56 lb. ft. of torque. This is capable of up to 56 ft. lbs. and 41.3114 hp with heavy modification!
Double The Fun, Joey!@
how can the 440 have more torque then the 500cc on duromax website???
Can’t figure out the market for these except big log splitters, guys trash pumps, and 8KW and up generators.
CA model intake setup
Cyclone style pre alr cleaner
would this fit on a megamoto 80-105 (kinda satire kinda asking for real
Would be cool in a mini bike
Id like to see this on gravy bones
wondering if gx390/440 alum flywheel will fit?
I will test it in the next video. I wonder if the head will fit on a 440. That would be a nice upgrade for cheap.
according to redneck computer geek channel the 500 head wont fit on the 440, bummer
I would definitely put this on a kart, not so much on a minibike.. not my minibike anyway, this wouldn't fit unless i setup a fuel tank to mount on the upper frame.
65ftlb is a chevy small block w/aluminum heads
The fuel solenoid needs to go, I have issues with those sticking open, filling the cylinder and crankcase with gasoline.
I personally would remove it as well.
Or stick closed and you clean the carb for no reason!
Massive head bolts=boost ready!
Tem como vende para o Brasil
looks like this beast shares nothing with the 390/420/440 for aprts, looks like the 500 head wont fit on the 390/420/440 either, all we can do is a stage 1 for now, hope to see aftermarket parts for this beast soon.
Isn’t Gravy Bones powered by a 440 now? Try this on it or Gravy Bones 2.0.
Will do.
Be cool if that better flowing head would fit a 440
I'm going to try it in the next video. Stay tunned!
@@RedBeardsGarage there’s a guy who did a tear down on one here on RUclips , can’t recall the channel but it’s a much larger head so it will not fit the 440 platform . Everything about the 500 is larger , really the only thing useable from another bigblock are the carbs .
I plan on cutting out my own exhaust flange and doing a 30or 32 mikuni since the stock carb is 28mm .
Sorry, that's not why. Actually, the exhaust port is always smaller than the intake because hot air flows twice as fast as cold air. For example, look at the air vents on a home without central air conditioning, small vents. Homes with air conditioning need larger vents about twice the volume. The reason hot air flows twice as fast is because the molecules are moving faster and it is less dense.
Has anyone added a oil cooler and extra filter to these types of engines ?drag race series is almost inevitable now come on people let's do it !👍
They just need to stick with common platform cc's. 80,125,250,500 single. 600,750,1000 twin. They made so many odd displacements.
Nothing like air filter udders 😂
Maybe it milks out more hp lol.
Whoop!!
wow
Full build and turbo charge it
Boost!!!!
me likey!
I need to line you out on what makes a hemispherical designed head. One of the main things is the valves. Your intake valves are on the intake, side of the head and your exhaust valves are on the exhaust side of your head. The piston is supposed to be a domed piston, and the spark plug is supposed to be in the center of the head.
The splayed out valves on this thing do in fact look like a hemispherical design.
Edit: after seeing him pull the head, its a hemispherical for sure. Just a fairly flat one. The plug is offset a little to clear the valves, and they have used a dished piston to reduce the compression ratio.
Ted, these are lawnmower engines, not muscle car engines. The term hemi is used to describe the valve arrangement, where the valves are not parallel to each other on a flat plane, the valve stems are making a V shape if you will, which angles the valve seats to allow a semi-round or hemispheric combustion chamber. Piston design is irrelevant in this scenario. 🍻
The only Interchangeable parts between the 440 and the 500 is the carb. Lol
shit they got mods for it yet?
Looks like Ducar
Hey 🎉
60ftlb is lug nut torque for a passenger car
Note: Speedway runs 500cc motors and they typically put out 70 to 80 HP.
Just saying.
There's zero aftermarket support for this engine at this point. It's not even close to a 390, 420, 440, or 460. Block, crank, rod, piston, head are different than the 440. The short skirt piston won't accommodate any billet rod made. ARC flywheels won't fit the crankshaft. The carb has something like a 28mm venturi. Everything is BIGGER.
I thought you would put it on the DYNO Fresh Out the Box ?? Now stick ya Index Finger in to the air and make 2 Circles and say whoop de doo then 3 circles and say Whoo Doop De Doo ok Yea That is what the 3 Intake Ports on the Air Intake you were asking about is that it gives the Incoming Air a SWIRL Effect so 1 more time Now Finger in the Air Whoo Doop De Doo Have a Nice Day RED
That carb is not adjustable. That brass screw on top is just the pilot jet. That no one out there makes any different sizes with out drilling it out your self. There is a idle air screw but they have it capped an glued shut. Iv been all through this carb on my brand new 13k generator. That is surging. Here to find out digging into it more. They for got the insulator gasket on the head side. Causing it to suck air an run lean. Aka. The famous hunting.