Fitting Pistons
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 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 Fig 1. Cylinder bores should be measured halfway down the cylinder bore and transverse to the engine crankshaft center line. (Refer to ENGINE - SPECIFICATIONS) . Pistons and cylinder bores should be measured at normal room temperature, 70°F (21°C) .