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Thread: 717 Max Bore?

  1. #1

    Join Date
    Apr 2010
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    Stamford CT
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    717 Max Bore?

    I am helping a friend rebuild a GTI with the 717 motor. It has been rebuilt once and the cylinders are already at 83mm , +1 over stock. Wiseco sells 83.5 & 84 mm pistons. Has anyone run either of these really overbore pistons with success?


  2. #2

    Join Date
    Apr 2006
    Location
    panama city beach 'fl
    Posts
    1,846
    +1
    9
    the race guys run 84mm yamaha piston just set them up fat

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