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  1. #1
    spray&Splash2011's Avatar
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    Correct piston size to rebuild a 2002 Seadoo GTX DI 951 engine?

    I am rebuilding my 2002 Seadoo GTX DI 951 Engine and need to know which piston size I need to order. The cylinder bore is currently at 88.08 MM Would this call for a STD bore piston?


  2. #2
    ncdoo's Avatar
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    You're already .003 over std. I would bore it .010 as long as the cylinder clears up at that.

  3. #3
    spray&Splash2011's Avatar
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    Quote Originally Posted by ncdoo View Post
    You're already .003 over std. I would bore it .010 as long as the cylinder clears up at that.
    Hey ncdoo, after boring the cylinder to .010 what size piston would I install?

  4. #4
    ncdoo's Avatar
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    A .010" or .26mm over piston, basically the first oversize. Get the piston first, then bore the cylinder to fit the piston.

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