In this video we show you guys our most recent project. It's a go kart we built from the ground up with a 420 Predator engine. We turned a regular yard kart into a racing go kart with a 13 hp engine with 20 ft pounds of torque.
**Be sure to check your local laws before driving any non-registered motorized vehicle. Do not attempt these activities at home. All content produced by Build Break Repeat is for entertainment purposes only.**
This is by no terms the final product of the kart, we would really like it to do wheelies and be a bit faster after a new belt and some more torque converter tuning. If you have any suggestions or questions please write them in the comments.
Thanks for watching and be sure to subscribe and don't worry if you don't have velocity you will be able to see parts of this build in the future!

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By YTB

27 thoughts on “We built a 420cc yard kart for tv!”
  1. Avataaar/Circle Created with python_avatars Brett Garcia says:

    Where did you get your torque converter at. I want to use the same engine with similar parts. Can you make a item list for us please

  2. Avataaar/Circle Created with python_avatars twitch@daninjas says:

    Is it stock

  3. Avataaar/Circle Created with python_avatars AmIonArock says:

    I have much respect you and your crew. It seem to me that bigger adventures will be coming your way. It good to see that spirit
    I going to throw this out to you its not cheap not a give a way but will make good project, that is of course that you still like wheels or have not moved on to Jets already.
    I have Toyota MR2 1985 The motor? leaks oil faster than a sive. Transmission manual good condition. I am too old to work on it
    shame its a mid engine right for racing my boys not into it. You guys are smart. Body and interior good and wold be worth an investment.

  4. Avataaar/Circle Created with python_avatars Nathanmfhughes says:

    Do you have wheelieb problems

  5. Avataaar/Circle Created with python_avatars Mike Moore says:

    It appears that the pulleys are not properly aligned. You need to line the inside part closest to the engine up with one another. Take a straight edge and put on the back side of the pulley.

  6. Avataaar/Circle Created with python_avatars Jake Louis says:

    keep it up man loving it

  7. Avataaar/Circle Created with python_avatars J P says:

    Nice build guys. A word of suggestion, to stabilize the cart add caster to your front steering. It appears that your steering knuckles are straight up or 0* caster, tilt them back ( || \\ ) about 5*. Doing this will make better use of the tire for more gription and better high speed stability.

  8. Avataaar/Circle Created with python_avatars Colin McKeon says:

    I need help finding a frame for a cart can someone give me a link

  9. Avataaar/Circle Created with python_avatars David Toews says:

    Brakes! Trees will step out in front of you…..just sayin'

  10. Avataaar/Circle Created with python_avatars Rusty Crusty Makes Stuff says:

    Move your seat back closer to the rear as much as possible and put a larger sprocket on your final drive. It won’t be as fast top end but it’ll make it jump out of the hole quicker. More rear weight may give you enough to wheelie.

  11. Avataaar/Circle Created with python_avatars Dan Hambrick says:

    Cool…So you guys are gonna be famous…lol…

  12. Avataaar/Circle Created with python_avatars F5 Tornado says:

    Looks like your belt is too tight. Your jackshaft is too far away from the engine. There should be a little play in the belt when the motor is stopped or at idle. That allows for slippage, so the belt doesn't immediately engage upon starting the kart, which is what it did in the video. Didn't that torque converter come with a mounting plate? If it did, that would be the distance you need between the pulleys. Try moving the motor back a little. EDIT: Yeah, I also noticed your belt is way out of alignment.

  13. Avataaar/Circle Created with python_avatars NOOBKING says:

    I just noticed we live close to each other

  14. Avataaar/Circle Created with python_avatars Overbuilt By Henry says:

    The belt wasn't aligned with the driver pulley, and the edge of that sheared the belt. The channel is growing fast! Congratulations!

  15. Avataaar/Circle Created with python_avatars ravenlorans says:

    Build one with a Dif and Suspension.

  16. Avataaar/Circle Created with python_avatars watahyahknow says:

    guess we now know where cars and camera's are at the moment

  17. Avataaar/Circle Created with python_avatars Paul S says:

    I could not see it well but i think Your belt is lined up in free mode but is it lined up onder stress ? Have fun

  18. Avataaar/Circle Created with python_avatars Sappington's aquatics says:

    Talk to the guys on cars and camera's

  19. Avataaar/Circle Created with python_avatars Billy Beane says:

    First your belt alignment looks off. Second is the tv thing a build off type deal because Cars and Cameras is doing a show on Help with as well.

  20. Avataaar/Circle Created with python_avatars Ben Purnell says:

    It’s not in line I had the same thing happen to me once

  21. Avataaar/Circle Created with python_avatars EverythingWithWheels says:

    The belt will wear really quick if the drive pulley and the clutch pulley are not aligned and if the belt is put on backwards. I have many Ebay torque converters and I have never ruined a belt.

  22. Avataaar/Circle Created with python_avatars Wallys rc World says:

    You need to get a good belt. Those ebsy belts are junk. You need a comet brand belt. You can look into changing the clutch springs. Hard acceleration off the line is tough on belts also
    Great job on the build. 👍

  23. Avataaar/Circle Created with python_avatars Robert Hardwick says:

    From what i could see,your clutch is not lined up with the torqe converter.your clutch on the engine side,should be lined up with the torque converter perfectly,or it will keep tearing up the belts.I used to work on snowmobiles and had run into this before!

  24. Avataaar/Circle Created with python_avatars Grant Delanoy says:

    throw a turbo on her 😉

  25. Avataaar/Circle Created with python_avatars Build Break Repeat says:

    We are super excited for this opportunity but this kart needs some more work, especially with the torque converter.  So if you guys have any suggestions on how to make it launch better that would be great.  But thanks so much for subscribing and helping us get to this point and hopefully this project helps us bring the channel to the next level.

  26. Avataaar/Circle Created with python_avatars Kyle Holmbeck says:

    I think it might have like hit something or it stopped for a second or something like that probably that it was probably a cheap and it probably old I don't know

  27. Avataaar/Circle Created with python_avatars Jamie Fells says:

    love your vids

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