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  1. #1

    riva piston size ???

    hi guy ! oem std piston is 99.94mm , riva racing piston .010 and .020 , is how many mm size ???? any guy can get info ?????


  2. #2
    dnielsen's Avatar
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    Quote Originally Posted by thomas loh View Post
    hi guy ! oem std piston is 99.94mm , riva racing piston .010 and .020 , is how many mm size ???? any guy can get info ?????
    .010 inch = .0254 MM
    .020 inch = .508 MM

    So at .010 over stock (99.94) = 99.9654

    And at .020 over stock (99.94) = 100.448

  3. #3
    dnielsen's Avatar
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    Quote Originally Posted by dnielsen View Post
    .010 inch = .0254 MM
    .020 inch = .508 MM

    So at .010 over stock (99.94) = 99.9654

    And at .020 over stock (99.94) = 100.448
    Riva shows 100.19 MM on the .010 and 100.44 MM on the .020 pistons.

  4. #4
    dnielsen's Avatar
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    Quote Originally Posted by dnielsen View Post
    Riva shows 100.19 MM on the .010 and 100.44 MM on the .020 pistons.
    Cylinder clearance should be .0025 - .003, I bored mine to .0027.

  5. #5

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    You just misplaced a "0" It happens

    .010 inch = .254 MM
    .020 inch = .508 MM

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