engine size?

Discussion in 'General Questions' started by canalcat, May 24, 2015.

  1. canalcat

    canalcat Member

    To be clear! My compression head bolts are 5/16=8mm. Spaced at 1 3/4" apart . Is this 66cc or 48 cc? I'm not a math person Thx Anyone
     

  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    You already asked this question so the answer is clearly unchanged.

    If you have 8 mm head studs it's a 66 cc for sure because no 48 cc motors use 8 mm head studs and yes 1 3/4" is right.

    Did you pull the head off or remove the nuts?
     
  3. Large Filipino

    Large Filipino New Member

    As far as stock heads go,the consensus is that the 66cc engine has 11 fins and the 48cc has 12 fins.
    Hope this helps.
     
  4. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

  5. canalcat

    canalcat Member

    Neither ,I'm considering a up grade ,compression head. Any suggestions MBR? I don't want to spend to much! THX .
     
  6. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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