30Hp 40Ft-Lbs Of Torque!!! Duromax 440cc Stage 4 Engine Build

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Red Beard's Garage

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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
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
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!
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.
Tube Buddy Affiliate- www.Tubebuddy.com/RBG
1740 Beard Balm - bit.ly/32L1eVS - save 15% with RBG15
Help support us on Patreon - patreon.com/redbeardsgarage
Want to donate without the commitment? - paypal.me/redbeardsgarage
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Red Beard's Garage
P.O. Box 572
Sweetwater, TN 37874
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Instrumentals by Chuki Beats - am-posts.info
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

Chuck Alford
Chuck Alford Տարի առաջ
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!
Muhammad Dhori
Muhammad Dhori 2 օր առաջ
What is the effect when the balance behind the camshaft is released
Doug Seibert
Doug Seibert 14 օր առաջ
How much hp will a GX 340 with no governor and a mikni 32mm and header make. Truthfully I’ve Hurd 20 up
Nogie Porcopio
Nogie Porcopio 15 օր առաջ
how much
Rob S Taylor
Rob S Taylor 16 օր առաջ
could this go on a dongfang 200cc KA?
Andrew Kozlowski
Andrew Kozlowski 20 օր առաջ
Red Beard this is weard beard. I own 2 Mudskipper 16 hp with electric start and have them on their twister xl curved longtail. The tech at Mudskipper says that it is the same as the Honda gx 390. Would You be able to tell me 100 percent proof positive if My 16 hp mitor is the exact same as the Duromax 18hp?
Jordi lopez
Jordi lopez 24 օր առաջ
what is the revolution? rpm
Chris Jankens
Chris Jankens 25 օր առաջ
What Clutch set up do you use on that?
Bags Riva Raet
Bags Riva Raet 27 օր առաջ
Ohhhwow new friend from Philippines
Nurhasan Abdurajik
Nurhasan Abdurajik 27 օր առաջ
Helo idol im from philippine can we settle tha price of these upgrade duro max 18hp,, i like these engine with new replacement kit..even i order these material its hard for me to do build and to assemble.please email me at abdurajiknurhasan112@gmail.com
rokin91 28 օր առաջ
Will this fit on the trailmaster mb200?
James Anderson
James Anderson 29 օր առաջ
Does the balancer need to be removed or does it effect the power
Red Beard's Garage
Red Beard's Garage 29 օր առաջ
It can make it rev slower but could help it have more torque.
Hamid HABOUDOU Ամիս առաջ
love ur beard
De Thu
De Thu Ամիս առաջ
Very nice….🔥❤😍💋💕❤️💄💋😘🔥❤😍💋
Devon D.
Devon D. Ամիս առաջ
I’ve actually raced gokarts with these motors and let me tell you they are buts
MrAlittle5150 Ամիս առաջ
Biggest complaint about these engines is if you are going to get them shipped to your house in one piece with no damage. Lots of complaint about the packing, very poor.
Very nice video, thanks for sharing the video how to assemble Engine motor. i have also like that engine motor 8hp i'm using to the small boat..thanks and god bless bro..
NosLen Gnitnabac
NosLen Gnitnabac Ամիս առաջ
Hellow overheat
Nathan Swisshelm
Nathan Swisshelm Ամիս առաջ
Please turn the music off
akunnya motel12
akunnya motel12 Ամիս առաջ
Mantap man
MAURICIO Barrios Ամիս առաջ
28 ft POUND that is the torque of a lock nut on a valve adjust nut Lol
Farming boy
Farming boy Ամիս առաջ
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
Farming boy
Farming boy Ամիս առաջ
Nice the 2 step fire 🔥
Michael Lavine
Michael Lavine Ամիս առաջ
Any updated discount code for motor?
Poorboyz Motorsports
Poorboyz Motorsports Ամիս առաջ
Wat fuel u running methonal or pump gas
Michael Sayi
Michael Sayi Ամիս առաջ
This channel is awesome. Thanks for listing all the tools in the description.
Mekael Duama
Mekael Duama Ամիս առաջ
I like your build BoSs. I wish to gift me that your build.
NIGHT MARCHER-808 Ամիս առաջ
Wow nice build I was trying to look for a website like this to get some go kart fun. Will be taking notes.
Mi Dixie Wrecked
Mi Dixie Wrecked Ամիս առաջ
I don't understand why the oil wasn't drained out prior to disassembly. !!
Ζ † N
Ζ † N 2 ամիս առաջ
i wish there were gy6 to industrial conversion kits available for china go carts
Owen Anonymous
Owen Anonymous 2 ամիս առաջ
4:43 "not for aircraft use"
Natsu Moe
Natsu Moe 2 ամիս առաջ
Did you have to custom order the flywheel with the starting gear? I can't find it anywhere
Muhammad Nabil
Muhammad Nabil 2 ամիս առաջ
Tolong traslet🙏saya mau tany _Bagai mana cara gorok mesin kaya gitu om_
Margie Serrano
Margie Serrano 2 ամիս առաջ
Mag kno po ganyang makina po.
Darnayam Iyan
Darnayam Iyan 2 ամիս առաջ
How match.
shaun huckabee
shaun huckabee 2 ամիս առաջ
Love the vid and the build! Just curious, what are your pilot and main jet sizes? I recently built my Predator 301cc and can't get it to stop running so rich! Any info or tips would be AWESOME! THANKS!!!!
SportbikerNZ 2 ամիս առաջ
Man, really good engine build vid. Just makes you want to see that tweaked out unit ripping on a kart so bad!
MyBike vlogs
MyBike vlogs 2 ամիս առաջ
Engin Yılmaz
Engin Yılmaz 2 ամիս առաջ
Jonathan Masanga
Jonathan Masanga 2 ամիս առաջ
Can it be installed in a boat? Thanks
Vlad Yoruhvsky
Vlad Yoruhvsky 2 ամիս առաջ
Is this a high speed engine? Tnx ..
jessica ferido
jessica ferido 2 ամիս առաջ
Magkano po price nyan..
Harry Brown
Harry Brown 2 ամիս առաջ
5:16 third set of ads 4th freeze up because ads wont play and having to refresh, this sucks im off
Mujibi Jibi
Mujibi Jibi 2 ամիս առաջ
Mantap bos,otomotif indonesia
shaun huckabee
shaun huckabee 3 ամիս առաջ
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.
DBF mix channel Danilo Formoso
DBF mix channel Danilo Formoso 3 ամիս առաջ
Hard to do that,challenging ideas.
Ron Wilson
Ron Wilson 3 ամիս առաջ
The gas vapor coming out of the carb at full throttle is not normal. Something's not right!
MrDavidelliottjr 3 ամիս առաջ
At this point. Just buy a 40hp efi briggs
Legend 426
Legend 426 3 ամիս առաջ
Because I can't find where to buy em
Legend 426
Legend 426 3 ամիս առաջ
How much are these engines
Johan Nis
Johan Nis 3 ամիս առաջ
Bisakah pesan stang seher sperti itu sma roda gila nya
Mến vlog
Mến vlog 3 ամիս առաջ
Trương Minh Trí
Trương Minh Trí 3 ամիս առաջ
Ước ji đc tặng 1 bộ máy thứ zại. Bán củng đc. Địa chỉ ấp 5 mỹ thạnh huyện thủ thừa long an.. Sdt 0886501324
Latif pky channel
Latif pky channel 3 ամիս առաջ
Z Mac
Z Mac 3 ամիս առաջ
Wow, impressive Nice Job!
wahyudi kaltim
wahyudi kaltim 4 ամիս առաջ
Woww hansem bro good
Ducky Funny
Ducky Funny 4 ամիս առաջ
Does this fit in a smart fortwo or a Mirage?
Harry Harry
Harry Harry 4 ամիս առաջ
Any New coupon codes? Thanks
Mark Swearingen
Mark Swearingen 4 ամիս առաջ
I enjoy your videos and everything you do.
Roger Curren
Roger Curren 4 ամիս առաջ
Still didn't get an answer on my 440 DuroMax 18 hp only going to 1/2 throttle then cuts ou
bossofthemoss 4 ամիս առաջ
Holy shit did you see the air/fuel mixture being blown back out of the carb due to reversion? You can do better, your leaving a lot of hp on the table. I had a gx390 on my airboat that I did a lot of head work to and it gave me a lot more power. I massaged the ports, heavily on exhaust, and shaved about . 070" off of it. Did away with the compression release and after that i could easily hand prop it. That means start it by turning the prop by hand. You can't do that to a stock one. The compression increase made a big difference. With stock cam this thing was a torque monster and allowed me to easily turn a prop with more pitch than it should've been able to turn.
Uung Guludug
Uung Guludug 4 ամիս առաջ
Marvie Nailon
Marvie Nailon 4 ամիս առաջ
Tag pila ni?
Prisco Jr. Macariola
Prisco Jr. Macariola 4 ամիս առաջ
How much for brand new engine and how to order? Thanks
TRUCKER 1876 4 ամիս առաջ
Cafe019 4 ամիս առաջ
Caraca você è muito zica 👏🏻
Paul Caruthers
Paul Caruthers 4 ամիս առաջ
Great build and video RBG, fun to watch!
Yannie Del Socorro
Yannie Del Socorro 4 ամիս առաջ
How much is this set-up? I would like to get a quotation please
JW channel Otomotif
JW channel Otomotif 5 ամիս առաջ
Nice engine .👍👍 allright
Raffy aguilar
Raffy aguilar 5 ամիս առաջ
How much price that machine..?
Lan Todak
Lan Todak 5 ամիս առաջ
Really awesome build. But 30hp from a 440cc engine is very weak.
Gorilla Cookies
Gorilla Cookies 5 ամիս առաջ
"Block".....No its a Case not a Block
Shar Amistad
Shar Amistad 5 ամիս առաջ
How much is this?
rubie apekz
rubie apekz 5 ամիս առաջ
How much
Anwar Chairil
Anwar Chairil 5 ամիս առաջ
King Gtasa
King Gtasa 5 ամիս առաջ
Put it on your schwinn stingray chopper 😱
samantha farmer
samantha farmer 5 ամիս առաջ
Can you do this for me? Or know who can?
valari வளரி
valari வளரி 5 ամիս առաջ
Sir make a para glider. But I will make a engine so can u help me. And example low cc high hp rpm 6000 to 7000.
Chon Bui
Chon Bui 5 ամիս առաջ
So good
May ann Villarosa
May ann Villarosa 5 ամիս առաջ
how much
David Morgan
David Morgan 5 ամիս առաջ
What was the total cost of build just parts including engine?
dom bantay isda
dom bantay isda 5 ամիս առաջ
how moch the prize
Racing Nhân Nguyễn
Racing Nhân Nguyễn 5 ամիս առաջ
Ước gì đc những món đồ đó có ở việt nam
DIESEL tech 5 ամիս առաջ
JR Grange
JR Grange 5 ամիս առաջ
RBG hey I don’t have anyone around here that can help me build a duck boat motor! I would like to get in contact with you see if it’s something you would want to tackle!
Dondon Villena
Dondon Villena 5 ամիս առաջ
Whe ned a smple. And a try.
mwt mwt
mwt mwt 5 ամիս առաջ
How to find out with parts should i order for my engine ? Do you just measure your old parts and then replace them for something stronger ? better ? They key is How do you know what should you put inside in place of old parts...
Nestor Yucson
Nestor Yucson 5 ամիս առաջ
I love this engine.how can i avail.
samantha farmer
samantha farmer 6 ամիս առաջ
Do you sell any fully build engine? Or know who does?
Fa Ra
Fa Ra 6 ամիս առաջ
Fa Ra
Fa Ra 6 ամիս առաջ
Nasti Masto
Nasti Masto 6 ամիս առաջ
Can this engine be used in a boat?
Will B
Will B 6 ամիս առաջ
Will the 420 hemi head work on this motor?
Pie Pie
Pie Pie 6 ամիս առաջ
How to order sir? I just want to buy.
Eddie Saavedra
Eddie Saavedra 6 ամիս առաջ
How to buy this kind of engine
Max Moriarty
Max Moriarty 6 ամիս առաջ
that torque converter listed below is for a 5/8in shaft and the engine is 1in shaft can u link one that will work with this build because i am planing on doing the exact same build my self
Max Moriarty
Max Moriarty 6 ամիս առաջ
and ratio rocker if u could
Max Moriarty
Max Moriarty 6 ամիս առաջ
and another top plate assembley cus the one linked is out of stock, thanks
Mental143 love
Mental143 love 6 ամիս առաջ
Yah engine India mein kaise milega Aur iska Indian price kya Please reply
Mental143 love
Mental143 love 6 ամիս առաջ
Yah engine Bharat mein mil jaega Power tiller banane ka Indian price kya hogi
Williamson Po
Williamson Po 6 ամիս առաջ
How much
alex lubin
alex lubin 6 ամիս առաջ
What’s the best clutch for one of those engines I don’t want a Torque converter
Lhoy Mohamad
Lhoy Mohamad 6 ամիս առաջ
How much dods.
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