Piston to Bore clearence

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  • TALON75
    Senior Member
    • May 2007
    • 887

    #1

    Piston to Bore clearence

    Just wondering what this number should be, had a motor score the cylnder bores on the left bank with .0035 clearence, what should be the minimum and maximum?
    www.RACE91.com
  • fast_crew
    Senior Member
    • May 2007
    • 844

    #2
    Depends on piston material and type. A 2618 forged piston .005-.006 would be getting loose. A hyperuetectic, .003 is loose.
    Josh K.

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