Fitting Pistons
NOTE:
Piston diameter should be measured at normal room temperature of 70°F (21°C).
To determine if piston-to-cylinder clearance is within specification, piston skirt diameter should be measured .080" (2 mm) from bottom of piston, at 90-degree angle to piston pin. Piston diameter must be within specification. See PISTONS, PINS & RINGS table under ENGINE SPECIFICATIONS. Cylinder bore measurements should be taken at approximately .50" (12.7 mm) below top surface of cylinder bore, at middle of bore and approximately .50" (12.7 mm) from bottom of cylinder bore.