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  1. #1
    brisyl's Avatar
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    gp1300 piston size

    Hi, i sent my cylinder to be replated and i ordered the piston that was suppose to fit the cylinder, but instead of replating my cylinder they sent me another one with a different color code so i endup with a cylinder using 89.90 piston and i have a 89.91 piston. Does 1/100 of a mm would potentially damage the engine. I hope someone can help me with this


  2. #2
    YudLuz2's Avatar
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    If the clearance was set correctly, it would not make that much difference. But a 89.90 piston is not the bore size for a 1300????

  3. #3
    CHICKA WAH WAH bren's Avatar
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    83.90
    83.91
    83.92

  4. #4
    brisyl's Avatar
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    yes, sorry about that it is 83.91 not 89.91

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