LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 637 (Engine Mechanical - 3.5L (Unit Repair)) >> Description and Operation >> Engine Component Description >> Connecting Rods and Pistons

Connecting Rods and Pistons

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The connecting rods are forged powdered metal with 59.144 mm (2.32 in) journals and have full floating piston pins. The connecting rod's crankpin end incorporates fractured joint technology which means the rod cap is "cracked" away from the once one-piece connecting rod. The cap then becomes perfectly matched at the cap to rod joint which significantly increases the strength of this joint and the rod itself. The piston pins are slip fit in the bronze bushed rods and are retained in the piston by round wire retainers. The cast aluminum pistons use two low tension compression rings and one multi-piece oil ring. The top compression ring is steel and the second compression ring is coated cast iron. The oil ring is a three piece side seal type ring which incorporates a steel expander and two chrome plated steel rails. To provide a non-scuffing surface when the engine is new, the pistons are tin plated and the top land is anodized.