new motor

  1. J

    Performance parts before break in

    I ordered a new bullet train 80cc motors and I was wondering is it safe to use performance parts on it like a sbp expansion chamber and other things like reed valves and a speed carb.
  2. Marine One

    Best motor to get?

    Hello all and thanks for all of your help so far. I have a motor that just gave up the ghost I think. It has been knocking on the high rpms and today it gave a couple of bigger pops and slowly revved down to nothing. I tried to get it back working again without taking anything apart so far and...

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