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Thread: Piston clearance?

  1. #1
    Senior Member mick's Avatar
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    Piston clearance?

    I know its been asked b4 but what clearance should they have? 1 thou per inch? Got a few barrels to machine!
    74AŚ3. 78J1. 79R. 82R. 83R. 99R. 74MR50. 75XR75. 98XR70 Crf70. Crf230. Crf450. KLX140.

  2. #2
    Junior Member
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    Stock clearances from the various manuals (all roughly the same):
    Piston - 38.980-39.000mm
    Cylinder - 39.005-39.015mm
    Clearance - 0.005-0.035mm

    Jake

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