Carby Speed Carb or Performance Carb?

Discussion in '2-Stroke Engines' started by skinnerman, Aug 7, 2014.

  1. skinnerman

    skinnerman New Member

    Hi! I ride my bike to work thrice a week (hour ride there and back) and I noticed that my standard carb SUCKS!

    So I was wondering, which is better for my purposes (daily commute), the performance carb or the speed carb?

  2. butre

    butre Well-Known Member

    a mikuni vm16 is the best bolt on for a stock engine. if you have am increased max rpm and/or increased compression a vm18 is even better
  3. crassius

    crassius Well-Known Member

    a standard carb is supposed to suck, otherwise no air will ever get into the motor

    I only use NT (or NTTC, WH, or other NT clones) they work fine for most bikes.

    What does yours do that is bad, and how did you tune it so far to fix that?
  4. skinnerman

    skinnerman New Member

    Haha very true casius!

    I have the standard NT carburetor. I bought everything from, and they have the

    I tried asking my carb problems multiple times but got nowhere. When I let out full throttle the RPMs rev up for a few seconds, then they drastically decrease, then go back up again, and on and on.

    Here's what I've already checked.

    Fuel flowing well -- Check
    Air filter clean - - - Check
    Motor mounts tight - Check

    Its a new carb!
  5. butre

    butre Well-Known Member

    could be a really mild vacuum leak or sticking cable
  6. Fabian

    Fabian Well-Known Member

    The standard NT carburettor works as well as any of the other carburettor options once it has been jetted correctly.