Fitting Pistons

To determine if piston-to-cylinder clearance is within specification, measure piston skirt diameter at 90-degree angle to piston pin. Measure piston diameter 1.62" (42 mm) from top of piston. See PISTONS, PINS & RINGS  table under ENGINE SPECIFICATIONS. Oversize pistons are available in .010" (.25 mm) and .020" (.50 mm).