Procedures

STANDARD PROCEDURE - FITTING PISTONS





The pistons are machined to two different weight specifications and matched to rods based on weight. All piston and rod assemblies weigh the same to maintain engine balance.

Piston and cylinder wall must be clean and dry. Piston diameter should be measured 90 degrees to piston pin at size location. Cylinder bores should be measured halfway down the cylinder bore and transverse to the engine crankshaft center line Engine Specifications. Pistons and cylinder bores should be measured at normal room temperature, 70°F (21°C).