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Thread: 250r piston size ????

  1. #1
    Join Date
    Dec 2010
    Location
    Green Bay, WI
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    1

    250r piston size ????

    I had to get the cylinder bored to 70.76mm, will the 70.75 piston be fine?

  2. #2
    KASEY's Avatar
    KASEY is online now weee weeee weeeeeeeeeee ! ! ! The day begins with 3WW
    Join Date
    Jan 2003
    Location
    ARIZONAS BIGGEST TROUBLEMAKER
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    4,242
    no it won't,, you need more clearance . wiseco recomends .003 to .005 so in mm it would be .08 to .12 mm

  3. #3
    Join Date
    Nov 2006
    Location
    southern oregon
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    2,338
    is 70.75 the actual piston measurement? do you have the piston? or are you just stressing about a few ten-thousandths before you buy?
    2-stroke lover

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