The connecting rod is a crucial engine component that links the piston to the crankshaft, converting reciprocating motion into rotary motion. It endures high cyclic loads, requiring excellent fatigue resistance, strength, and stiffness. Typically made from forged steel, aluminum, or titanium for weight reduction and durability, the rod's small end connects to the piston pin and the big end to the crankshaft journal via a bolted cap. Precision machining ensures tight tolerances for hole alignment and surface finish. In V-type engines, short or forked rods may be used to optimize space and balance.
