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  1. #1

    Join Date
    May 2011

    **~*~93 & 94 xp 650's**~*~

    Hi is there anything i can do to make the rotax 650's run faster without upgrading to a bigger engine? How can i get a faster hole shot? How can i increase top speed?

  2. #2
    If i knew,...I wouldn't ask sea-one's Avatar
    Join Date
    Aug 2009
    If your mechanically inclined and understand how fuel and air ratio works then you could go with carbs rejet,flame arrestors, prop,just to start.then locate an aftermarket pipe and a cylinder head...

  3. #3
    Myself's Avatar
    Join Date
    May 2007
    North Central Arkansas
    I agree with the above. If you want to go cheap, a stock 717 pipe makes a cheap upgrade to a 657. Rebuild the carbs so they are performing like new. You can unbolt the the stock head and have it milled about .025 to bump compression up a bit. Also don't forget the stickers, that always helps performance. lol

  4. #4

    Join Date
    Sep 2009
    open flame arrestors, re-jet and a prop. oh and a racing stripe( good for atleast 5 h.p.)

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