Valve: Description and Operation

INTAKE/EXHAUST VALVES & SEATS - DESCRIPTION
Valves are made of highly heat-resistant steel and are chrome plated to prevent stem scuffing.

The intake valve is a one-piece forging, while the exhaust valve has a forged head with a welded stem for lock groove harden ability. The four valves (two intake and two exhaust) employ a three-groove lock design to help facilitate valve rotation.