Question about Factory bike Chrono SM 250 Motorcycles

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I have a 2008 sunl scotter has 622 miles on it need more power its a 150 cc what can i do ??

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  • Dave Warner Jul 12, 2010

    i have a sunl scooter 2008 with 622 miles on it 150 cc it only has top speed of 30 mph would like some advice if i can make any adjustments or anything i can do to make it go alittle faster please help thanks

  • Dave Warner Jul 12, 2010

    dont want to go that far into it the bike is too new



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Hi! If you want more power, try oversizing the piston ring and bore the piston liner. This will make it powerful. Hope this helps and have a good one.

Posted on Jul 12, 2010

  • dj_relly999
    dj_relly999 Jul 13, 2010

    Yes I fully understand. Lets just wait till the bike gets weak then its time to modify it.


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If you have a scooter with a 150cc engine, it probably would not develop as much power as say a 250cc motorcycle.

Is the power so low that it's not driveable within posted speeds?

What exactly is the engine doing that makes it not have enough power?

Is it missing?

Posted on Jul 11, 2010

  • Duane Wong
    Duane Wong Jul 12, 2010

    If it's new, then take it back to the dealer and ask if the power problem, or lack thereof, is normal?



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