30Hp 40Ft-Lbs Of Torque!!! Duromax 440cc Stage 4 Engine Build
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- čas přidán 2. 07. 2024
- Today we tear down and build a Duromax 440cc engine using parts from Go Power Sports. We install a billet rod, billet flywheel, .308 cam, 1.2 ratio rockers, 65lbs double valve springs, chromoly push rods, 34mm flatslide carb, milled and ported head and top plate. This engine is capable of making close to 30hp and 40ft-lbs. Don't forget to check out the links, subscribe, share and like to keep the videos coming!!!
Use 20% code RBG720 on ALL DuroMax products for July 2020 bit.ly/3894jRJ
Check us out on ROKU - bit.ly/30lHmaA
Merch & Events - bit.ly/33YbmtO
Parts
Duromax 440cc Engine - bit.ly/2X0FDG2
440cc Stage 2 Kit - bit.ly/34iuHpg
Top Plate - bit.ly/34aphg0
34mm Round Slide Kit - bit.ly/2PeTnL1
34mm Flat Slide Carb - amzn.to/34g5qvK
Intake Manifold - Coming Soon
Stainless Header - bit.ly/35gNC5g
Chromoly Push Rods - bit.ly/36tsskn
Ratio Rockers - Coming Soon
Head Work - lfrsmallengine@gmail.com
Tools
Valve Spring Compressor - amzn.to/2rwLqbg
Piston Ring Compressor - amzn.to/2YITNwr
Piston Ring Tool - amzn.to/2sp60tT
Valve Grinding Compound - amzn.to/34fNAt9
Feeler Gauges - amzn.to/35iUM9c
3/8” Torque Wrench - amzn.to/2RKP8bR
½” Torque Wrench - amzn.to/36pwLx2
Calipers - amzn.to/2LPlVbT
Bore Gauge - amzn.to/2YLKxb0
Ring Grinding Tool - amzn.to/2ROOvOr
Merch & Events - bit.ly/33YbmtO
Check Out Go Power Sports for all your Go kart needs!
bit.ly/2viX9vP
Parts & Tools used on the channel - amazon.com/shop/redbeardsgarage
Quantum Welding Table - bit.ly/2HVk8jl
Everlast Welder - bit.ly/2T0V0xK
DuroMax Generators, Pressure Washers, & Engines bit.ly/3894jRJ Use 20% code RBG720 for July 2020.
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Red Beard's Garage
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Sweetwater, TN 37874
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Instrumentals by Chuki Beats - / chukibeats
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*********Disclaimer*********
Please do not try to re-enact or recreate anything you see in these videos. We are trained professionals. Red Beards Garage does not take any responsibility for injury's created by doing so.
#RBGKarts #RedBeardsGarage - Zábava
I've been watching your builds for a couple of years, this is by far the best tutorial you've cranked out yet. Enjoying watching your channel and content improve!
Fffffffffff
3 99
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How to order sir?
Mantap
I love how it shows the socket size, saved a lot of time 🙏🏻
Thanks RedBeard... for taking the time, can't wait to see what you get into at the new shop.
The finishing touch for this engine should be an AMR300 supercharger, it'll take advantage of the ported head and bigger valves and really make that thing scream.
Oh its coming sir
Ya those amr's are bad ass blowers.
@@RedBeardsGarage hello sir, may I ask for instructions on modifying the gx460, I want to ask how to increase the speed when used in racing on water
This is definitely one of your best vids yet, can't believe you just happened to post a vid like this because I've always ran 212s but was recently thinking about doing a big block however wanted to know how much meaner they sound lone behold I stumble across this good work man keep it up
Another great build! I like the new intro; it gets right to the point. Information presented is in bullet format = excellent!
wow, that was insane engine. imagine of to 8000 rpm. hope that philippines have like that engine for fishing boat
I love going to even old videos to find parts it saves a big headache and clears up confusion
Sounds great, Sunday morning after a snow storm running it in a snow blower
I can't watch these kinds of videos without wanting to do the same to my lawnmower 😂
@@clayton203 that this would drag you all over the place haha
Amazing tutorial I have never seen you do or anyone else do a better and more informative video GREAT JOB 👍🏼👍🏼👍🏼👍🏼👍🏼
Just found your channel and I must say Redbeard you are a great guy, thank you so much for the knowledge. Blessings.
Great video. Thank you for taking the time to do this. One video suggestion I would like to see is a sub 4000rpm torque build. For guys who swap out old Tecumseh or Onan engines and still use there tractors around the house or for class limited 4000rpm pulling classes.
Great video as always and the more i watch this stuff and whats available i see the same things as cars all these billet parts in cast bodies and what breaks when something goes wrong typically the block.
Keep up hard work so others like me can dream :)
Great build and video RBG, fun to watch!
I watched this video from beginning to end. I wish I had the tools to do this to and engine. You showed everything that you would need but I don't think I have the time to do this. Great job man. Love the work.
This is one of my dream to buy engine like this already revolution😍😍😍 am from Philippines.
AA Your liker TV go for it then
I love this channel from Thailand🇹🇭
Nice build! Looking forward to seeing the upgrades to this engine.
You make ordinary engine to be an extraordinary and powerful engine, awesome !!
I'm glad you put my mind at ease... in the beginning of the video it looked liked the table was "dancing" just a little 😁🤣. What did the Duro-Max start out as far as hp and ft/lbs torque??? 30 ponies and 40 ft. lbs.,... She's a little monster!!! Great build and video! God Bless and Keep'em Rollin!!!
u should invent a 4 speed manual transmition for a small engine.
don't reinvent the wheel, just use a dirt bike engine. it's cheaper and more powerful than doing a build like this.
@mister clean shifter carts use motorcycle engines... its the same transmission
pit bike engines have those
Why not just use 3 wheeler setup, they use centripetal clutch and 4 or five speed gearbox some with hi/lo!
Y e s
Fantastic cam lift and port size! I like the carb mist reversion when you blip the throttle.
simple but perfect..
no mess with complicated wiring
thanks give me ideas
Lmao I was literally thinking about a high spec duromax earlier today and here you are uploading about one
Love the vid as usual. Amazing build and I'm wondering how you have your 34mm jetted for the slow and main. Insane throttle response.
I am a firm believer in the DuroMax engines. I run them on everything. Very good engines straight from the box.
I put one in a golf cart and it was a beast!
Not as good as honda but for the price it's really good
Man! the ports on that engine are huge!
i would use a stone to smooth the edges of the rings, they are hard and a file will hardly touch them. and use a micrometer not calipers.. love the channel keep it up
Hi, what I like the most is how you prepare the plants I am about to prepare one as well as in the other fan noodles I'm crazy with that
Watched 2 seconds and i already love it. Subbed
It's a beast!
That engine will shake itself to bits in no time
Why, I've been running 2 big blocks without the balance shaft now for years, both turning around 7500 rpm's and I've not had any problems at all! The balance shaft was designed to smooth the engines idle and nothing much more! Hell some of my clone big blocks didn't come with balance shafts and one of my Honda GX270's didn't.
@buggylife7625 Not only removing the balance shaft but changing the rotating assembly weight. I build car engines and watching this makes me cringe. a $150 balance would save you blowing up $1k in parts here.
Ну наконец то мой культиватор начнёт нормально копать.
Алексей Таловин турбину поставь
Nice Build Greg!
I can’t wait to see this motor push 50 hp!
A little more too it then bending the governor spring. :)
This you do best :-)
Hey Beard Dudes, your videos are looking like a TV show. I like it.
Amazing build😮
It's good for Philippine racing boat👍👏
Did you think these setup work on the chinese versions? I had lot of those engines at my work
when you consider the cost of the engine and all those fine looking parts and the labor I am wondering if it wouldn't have been better to get 3o hp Rotax or equivalent and have a better engine?
You can go to the scrap yard and snach 30hp rotax from a jetski and rebuild it
And it will still be only half the cost
How much is this to do I’m looking into getting a good engine on my bike and making it street legal
@@benbarkey8333 just get a cheap crotch rocket lol?
@@blackturbine do you know the name of those jetski's?
Great job, in Brazil de have a this Motors with 43hp, and reliability.
Fortex, for go karting.
Wow!!!! Great,Huge.Salute👍👍👍👍👍👍
I think keeping the balance shaft would have been a good idea. Probably any power loss would have been marginal.
It would have defiantly kept the vibrations down but would have made it rev slower. We are doing a billet stroker crank next and it is balanced so no more vibrations
Im not understanding what needs to be balanced since it is a single cylinder engine. Thoughts?
@@K_M_M_G balancing the crankshaft so that the rotational mass is zero'd out. That way he can eliminate the balance shaft. The Rod and piston stay the same since its a single cylinder.
Why not add a 6.6L Duramax turbo diesel to a Go Kart? lol
I want a diesel one so bad 😂
If u want a diesel engine then go with Kohler diesel engines. Small diesel engines yu can add a turbo to
You make it look so easy ,dam your good love ya back
Thanks,that engine sounded real good.
That thing is sinister I would like it on a mini bike
Can you provide the link for the Ratio Rockers, please? I’m currently doing a very similar build on this same motor.
How much can the stock internals handle, in terms of rpm
I enjoy your videos and everything you do.
That thing sounds badass
Im curious, why remove the ballance shaft? would drastically decrease vibration keeping it in.
I think it would be removed for the reason of the shaft being out of balance naturally it would shatter as well as may not clear connecting rod
It's removed to lower the rotational mass, anything driven by the crank will use the engines power to rotate, this obviously leads to slight power loss and less responsive throttle.
With changing the piston and rod you've changed the harmonics in the crank so the balances haft wouldn't be any good any more anyway
Yep, crank needs to be balanced after changing rotating weight and balance shaft removal.
As a fellow gearhead I totally understand building an engine.
This is totally cool. But why wouldn't you just buy a bigger engine. Wouldn't it be cheaper in the end? Or is it more of a weight saving thing...?
TACOMASRT5 probably weight and size. It’s the same power if a predator 720 but it’s so Much smaller
Why not just use a 450 mx bike engine. More power than this engine will ever make, lighter and has a full gearbox and clutch.
baron30001 thats a good question. Part of it may be wanting to actually do something yourself. But I know people have made shifter karts in the past and they are STUPID fast.
I love this enjin👍👍👍👍
Damn , that sounds good.
50 hp? 😵
I would be scared to push for those numbers on that engine. How effective is the oiling system (or lack of) at those RPMs and that power?
I'd be more worried about the block. I'd start with a 10 bolt block from Vegas Cart or Bullfrog to put that much money in, turning those RPMs with that compression if I wanted it to last.
or he could stop wasting his time with these small kid engines, buy a 450cc dirt bike engine (which already make 54 hp) and mod that out and squeeze 64hp out of it
@@grizzz7960 wasting his time? He's sponsored, he makes a damn good living building these little "kid engines" look at his house, shop, tools, property, toys, etc.... and all that from building these kid engines, lol, who wouldn't.
@@theoldfartschannel3692 That is a 10 bolt block!
@@BubbaB43 Seriously? Wasn't aware DuroMax 440cc engines were 10 bolt blocks. Any beefier than a 420 Predator otherwise, that anyone has noticed?
You think your slick I saw the supercharger in the thumbnail
That would be awesome on a mud skipper twister
Super super awesome job thanks for teaching that
Imbalance and vibrations will destroy an engine. ~( ,m,)~
Duh
Keep in mind both the Duromax and predator engines are identical besides that there made by different companies in China there both Honda clones, the spec's are slightly different,
So BUYER BEWARE,
QUESTION RB...
Why did you not reinstall the generator
It won't work or the flywheel is not compatible: racing motors on go karts needs Light's in the darkness when you're LIT 🤣😳😅
DuroMax is California... Not China.
Nice thorough, well detailed explanation and assembly of the motor R.B.G can't wait to see what is does.
Kinda getting into a new hobby, biggest fan, trying to learn n meet yu guys. Ya the best. Got my coleman ct200u up to 55 mph
Thank you for supporting the channel! We have some meet ups this year. Try and come!
Sounds mean! Awesome job!
Man, really good engine build vid. Just makes you want to see that tweaked out unit ripping on a kart so bad!
Thats bad ass bro love it
Wow, impressive
Nice Job!
I just love the videos bud
Nice build i haven't try but i believe to your build🤩
Wow nice build I was trying to look for a website like this to get some go kart fun. Will be taking notes.
Sir new subscriber from the Philippines,I like the way you work,and I like an engine like that,😍😍😍😍
Wow nice job
I was always told to put the opening of the wrist pin clip parallel to the stroke , on a high reving motor that will prevent clip from closing when the pistion changes direction , if the clip comes loose the wrist pin will walk out and destroy the cylinder wall
Nice the 2 step fire 🔥
love this
You just gained more subs. Thanks
Excelente colega Barbaroja💪
Fun engine for 45km cars we have in netherlands
Love this!
Regards from Brazil!
Greg, 04MAY21 just saw DuroTech YT add for the 18hp big block featuring footage from RBG, incuding your sweet mug! I started cheering as I saw it. Congrats!.
I wish to have engine someday
Also boat for fishing
Nice to watch your great job sir
Now its time for a tuurbskyyyyy
So good
Good job
I’ve bin watching you since the manifold build 5 years ago but then I got my I pad 1 one year ago so then I Joni you tube 8months ago
Awesome video
I like to set pushrod length so at 1/2 valve travel rocker is parallel to head or valve cover surface .that way rocker angle stays as small as possible on both sides of travel
Waaaw awesome bro!
nice engine
Excellent fellow
EFI would be a nice option also.
Awesome!
Amazing
Hard to do that,challenging ideas.
Nice video bro
Sweet is all i can say
Great vid bud I would have had a few questions on the build. but not many channels reply to any questions. so didnt bother bud but love the vid and godbless .
We try to answer all we can
Nice tutorial