69cc Engine kit!

Discussion in 'General Questions' started by StreetLethal, Aug 30, 2016.

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  1. StreetLethal

    StreetLethal New Member

    I saw an ad on Craigslist for a 69cc engine only for sale at $119. Are they really 69cc or just 66cc kits?
     

  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    A 66cc is a 38 mm stroke engine.
    A 69 cc is a 40 mm stroke engine.
    They use the same 47mm diameter piston although
    the 40 mm has a lower wrist pin hole location than the 38 mm.
     
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