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.

@questofknowledge8788

9 күн бұрын

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 !

@352fishing4

9 ай бұрын

I’m mad I just bought a 459cc and this came out three days later

@DBD801

6 ай бұрын

Nice! I was thinking about doing the same setup on my 1436. What prop are you running?

@Minibikes_of_Augusta

6 ай бұрын

@@DBD801 sps T76

@DBD801

6 ай бұрын

@@Minibikes_of_Augusta did you have to get the adapter kit from mudskipper to run that?

@Minibikes_of_Augusta

6 ай бұрын

@@DBD801 yes

Shout out to the camera genius, you film at Hollywood level. Every time I watch redbeard, you two are like family to me.

Would love to see a build on this engine. Also would like to see how it compares with the 440 on the dyno.

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.

Ok thank you.💯👍

I learn so much from this channel

Thats a beast right out of the box......

Yes I am wanting to use one

Man I’m pumped about this one and I love when you do engine builds! Thank you so much 🦾

Yupp. Water/Particle catch turbines. These are standard on concrete saws

Knowledge is power!!!

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

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!

@jimmace6148

9 ай бұрын

You are correct. I've seen similar setups on military vehicles

Awsome vid thanks

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

FULL BUILD!!

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

@seanb250

9 ай бұрын

@@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!

@chadmills5400

8 ай бұрын

Dura? or Duro?

@chadmills5400

8 ай бұрын

Truck engine or cart engine?

@samsnephew3209

7 ай бұрын

​@chadmills5400 snorkel that baby. Put the air intake as high as possible and blame redneck innovations.

I love the 440 I own two of them might have to try the 500 out on my next snowblower build

Definitely interested

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 ;)

@cozy_Fozy

9 ай бұрын

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! 🍻

@cozy_Fozy

9 ай бұрын

(Cyclonic pre-filtering similar to what's used on those fancy vacuum cleaners, lol)

Yea I want one

Great review….new subscriber….enjoying hour work. Will see about one if these on a new buggy

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

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 ;)

More it's just like Christmas are can't wait to see that puppy up and running. ✌️💛🙏😅😅

Honda makes the cyclone air box. We run a gx390 on a floor saw with it.

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.

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

Cool videos

Oh Boy a Thumpin gravy bones engine 😮 ☮️

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

@cozy_Fozy

9 ай бұрын

I believe it is a type of cyclonic pre-filter, 🍻

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.

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.

Haven't had a "jeepers" in while. 😊😊

Boonjour!Omg. you shared breathtaking sharing!

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.

@RedBeardsGarage

9 ай бұрын

Interesting. I didn’t know what in the world they could have been for.

@genebond

9 ай бұрын

That was my thought as well. Debris gets spun around and falls out rather than going on to plug the filter media.

Cyclone style pre alr cleaner

65ftlb is a chevy small block w/aluminum heads

I wanna see this on a mini bike 👍😎... some fella mentioned turbski 🎉 that's out of my wheel house lol

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. 😆👍👍

@RedBeardsGarage

9 ай бұрын

They do have the electric start version. We just got this one first.

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.

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!

Would be cool in a mini bike

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

It looks like that intake has three cycloidal dust separators. Just another layer of filtration.

Id like to see this on gravy bones

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.

Massive head bolts=boost ready!

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.

That's a pretty tight head bolt. Even my DRZ400 only has 34ft/lb as the head bolt spec.

@RedBeardsGarage

9 ай бұрын

I thought it was as well.

ANY UPDATES ON SUPERCHARGEd 440

great video,is the mount holes the same as a 13 horse power Honda ? would like to swap engines,,,

Wonder why you dont see these on snowthrowers as much. Would really get the snow going!

Does it have a built in alternator for the electric start version?

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.

You build one of these yet? Looking to see what kind of improvements you can make to this engine.

Double The Fun, Joey!@

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

wow

Does it have a cast iron connecting rod?

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.

Boost!!!!

I know this is late but does this have the same mounting plate as the predator 420

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.

Can’t figure out the market for these except big log splitters, guys trash pumps, and 8KW and up generators.

I’m thinking about buying one for my daughters go kart how fast does it go stock

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.

CA model intake setup

Whoop!!

Full build and turbo charge 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.

Do have and low speed of that engine..?And the engine was available in the Philippines..?

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.

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 !👍

Hey 🎉

So do I need a clutch?

me likey!

So this will be going on an 80/105 Minibike?

Be cool if that better flowing head would fit a 440

@RedBeardsGarage

9 ай бұрын

I'm going to try it in the next video. Stay tunned!

@Minibikes_of_Augusta

9 ай бұрын

@@RedBeardsGarage there’s a guy who did a tear down on one here on KZread , 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 .

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.

@nerd1000ify

9 ай бұрын

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.

@cozy_Fozy

9 ай бұрын

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. 🍻

wondering if gx390/440 alum flywheel will fit?

@RedBeardsGarage

9 ай бұрын

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.

@sacooper802

9 ай бұрын

according to redneck computer geek channel the 500 head wont fit on the 440, bummer

Tem como vende para o Brasil

think this could fit on a Coleman ct200 without modifying the frame?

@RedBeardsGarage

9 ай бұрын

I think it would

@derekloomis4874

9 ай бұрын

This is what I was thinking, my ct200 needs a big block

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.

Nothing like air filter udders 😂

@RedBeardsGarage

9 ай бұрын

Maybe it milks out more hp lol.

60ftlb is lug nut torque for a passenger car

how can the 440 have more torque then the 500cc on duromax website???

The only Interchangeable parts between the 440 and the 500 is the carb. Lol

Looks like Ducar

would this fit on a megamoto 80-105 (kinda satire kinda asking for real

The fuel solenoid needs to go, I have issues with those sticking open, filling the cylinder and crankcase with gasoline.

@RedBeardsGarage

9 ай бұрын

I personally would remove it as well.

@leehuntley189

9 ай бұрын

Or stick closed and you clean the carb for no reason!

Note: Speedway runs 500cc motors and they typically put out 70 to 80 HP. Just saying.

Isn’t Gravy Bones powered by a 440 now? Try this on it or Gravy Bones 2.0.

@RedBeardsGarage

9 ай бұрын

Will do.

God bless RBG

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.

Bom dia

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

shit they got mods for it yet?