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 39" (10 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 middle of bore and transverse to engine crankshaft center line.