cowboy kenny Posted May 27, 2017 Share Posted May 27, 2017 I have a 1977 lb80 II I am restoring. I just bought the 4th oversived piston (+1.00 mm) for fun but i need to know how big to bore the cylinder. Please help Link to comment Share on other sites More sharing options...
Moderator Airhead Posted May 27, 2017 Moderator Share Posted May 27, 2017 What about measuring the piston at the skirt? Link to comment Share on other sites More sharing options...
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