Connecting Rod: Description and Operation
PISTON & CONNECTING ROD / DESCRIPTIONNOTE: Valve reliefs were removed from the pistons for the 2003MY. It is possible when ordering a service piston/rod assembly that valve reliefs are present. These may be used in the engine, and will not affect engine operation.
The pistons are made of a high strength aluminum alloy. Top land height has been decreased to reduce emissions. Piston skirts are coated with a solid lubricant for scuff resistance. Connecting rod is forged steel with a squirt hole and attaches to the piston with a full floating pin retained by lock rings.