Just set up a new lower engine, and now the rear wheel locks when clutch is engaged

Discussion in 'Motorized Bicycle General Discussion' started by sergman89, Jun 24, 2014.

  1. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

    You didn't check what you wrote.... :)
    the gasket between the head and the cylinder is the HEAD gasket.
     
  2. mapbike

    mapbike Active Member

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    Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

    Seems like you are trying to make a pk-80 piston work in a grube style engine.

    I agree with Neil and also suggest that you put original piston back in your engine along with a new head and head gasket, torque it all down properly and you should hopefully be in good shape if needle bearing on either end of connecting rod have not been damaged.

    Best wishes...

    Map
     
  3. Greg58

    Greg58 Well-Known Member

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    Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

    After reading the op again the original piston was run on another engine, since you have a Thatdax lower I would order a piston from him and use the cylinder you have, order a set of rings just in case you break one removing them.
     
  4. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

    The piston with the triangle mark on the intake side is the right one for a "Dax" bottom end.
     
  5. Greg58

    Greg58 Well-Known Member

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    Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

    Yea I know but if all else is new I myself would buy a new piston. That's what I meant.
     
  6. greaser_monkey_87

    greaser_monkey_87 New Member

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    Re: Just set up a new lower engine, and now the rear wheel locks when clutch is engag

    Post edited.
     

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