Fitting Pistons
WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
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° to piston pin at size location shown in illustration . Cylinder bores should be measured halfway down the cylinder bore and transverse to the engine crankshaft center line. See Engine - Specifications . Pistons and cylinder bores should be measured at normal room temperature, 70°F (21°C).