In this video we find a couple of old 5 hp Flathead Briggs and Stratton Motors, one of them being a Raptor Racing Motor, and we rebuild them, hoping that we can make at least one running one to put on our 60's go kart. We were able to put one of them on the kart but before we could even drive it we blew out the old head gasket that we tried to reuse. So stay tuned for another video where we replace both head gaskets as well as actually drive the kart with them but they seem to be pretty dope little engines and they definitely match the look of the kart.
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By YTB

19 thoughts on “Flathead briggs raptor engine rebuild for 60’s go kart!”
  1. Avataaar/Circle Created with python_avatars hillbilly bmx says:

    Are you a broken record? You keep saying the same thing!

  2. Avataaar/Circle Created with python_avatars Marc Caporicci says:

    Dude…please stop saying "like" so much…please!!

  3. Avataaar/Circle Created with python_avatars Trey Reedy says:

    Just picked up an old racing kart with a Raptor motor. What fuel mixture do you use?

  4. Avataaar/Circle Created with python_avatars Duane White says:

    Just grab the plug wire it will die LoL 😜

  5. Avataaar/Circle Created with python_avatars Duane White says:

    Did you line up the timing marks.

  6. Avataaar/Circle Created with python_avatars Cody Kamminga says:

    Just bore out the cylinder walls and put a oversized piston in it

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

    It is not a racing Briggs on more

  8. Avataaar/Circle Created with python_avatars Radek Čipcala says:

    DEMENTE

  9. Avataaar/Circle Created with python_avatars Bob Is The Builder says:

    The best way to hone is use an old school hand crank drill and a 3 stone home. A good cart engine builder can bore the cylinder and install a stainless steel sleeve.

  10. Avataaar/Circle Created with python_avatars Doorguru says:

    A good way to seat the valves without removing the head is to pry up on the valve spring with a screwdriver and suddenly pull the screwdriver out.. takes care of any carbon issues around the valves.

  11. Avataaar/Circle Created with python_avatars Thameren Dyck says:

    Could you maby use a dingle ball hone?

  12. Avataaar/Circle Created with python_avatars Collin Miller says:

    the engine wont start unless if it is a a high rpm.

  13. Avataaar/Circle Created with python_avatars Certified Rippers says:

    Please Make More videos!

  14. Avataaar/Circle Created with python_avatars Wangan280z says:

    when i was a kid my dad gave me a mini hone meant for that block and i honed my 5hp block with no issues, but i remember it having a factory steel sleeve? It was a block from the 70’s. That motor made 12hp on alcohol back in the day, that kart was moving👌

  15. Avataaar/Circle Created with python_avatars B_MB says:

    I see B&S, and cool Karts, I subscribe.
    End of story…

  16. Avataaar/Circle Created with python_avatars Robban says:

    your mic is super bad pls replace it

  17. Avataaar/Circle Created with python_avatars Kylee Kyotee says:

    Yea but that fly wheel wont usually turn over as many rpms as a predator 😂 buy a predator build it and it will have more power than any built 5hp flat head unless its from a true flat head builder still ohv engines make more power than a flatty

  18. Avataaar/Circle Created with python_avatars Alex says:

    please get a pop filter or something to go over the mic

  19. Avataaar/Circle Created with python_avatars Christopher B says:

    pretty sure the block for the raptor engine is shaved meaning higher compression possible even had some porting done. just saying that to let yall know

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