Valve Seat

MINIMUM VALVE STEM DEPTH





Measure distance (arrow) between end of valve stem and top surface of cylinder head.
Minimum dimensions:
At intake valve: 36.4 mm (1.433 inch).
At exhaust valve: 36.4 mm (1.433 inch).

INTAKE VALVE SEAT





a - Diameter: 31.9 mm (1.255 inch).
b - Seat width: 1.5-1.8 mm (0.059-0.071 inch).
Correction angle: 75°.
Valve seat angle: 45°.
Z - Bottom surface of cylinder head.

EXHAUST VALVE SEAT





a - Diameter: 26.0 mm (1.024 inch).
b - Seat width: 1.5-1.8 mm (0.059-0.071 inch).
Correction angle: 75°.
Valve seat angle: 45°.
Z - Bottom surface of cylinder head