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Old 12-13-2016, 07:38 PM
  #17  
Truckracer
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From my old notes:

GT80 Bore = 1.6" or 40.4mm

GT445 Bore = 1.5"

two rings per piston

Zenoah rings are tough! It takes quite a bit to damage them,

Last edited by Truckracer; 12-13-2016 at 07:43 PM.