Valve, Intake/Exhaust

DIMENSIONS
Clearance (Hot):
Intake: 0.31 - 0.39 mm (0.012 - 0.015 inch)
Exhaust: 0.33 - 0.41 mm (0.013 - 0.016 inch)

Head Diameter "D":
Intake: 36.5 - 36.7 mm (1.437 - 1.445 inch)
Exhaust: 31.2 - 31.4 mm (1.228 - 1.236 inch)

Length "L":
Intake: 101.02 - 101.62 mm (3.9772 - (4.0008 inch)
Exhaust: 98.52 - 99.72 mm (3.8787 - 3.9260 inch)

Margin "T":
Intake: 0.95 - 1.25 mm (0.0374 - 0.0492 inch)
Exhaust: 1.15 - 1.45 mm (0.0453 - 0.0571 inch)

Margin "T" Limit: More Than 0.5 mm (0.020 inch)

Seat Angle "alpha": 45° 15' - 45° 45'

Stem Diameter "d":
Intake: 6.965 - 6.980 mm (0.2742 - 0.2748 inch)
Exhaust: 6.945 - 6.960 mm (0.2734 - 0.2740 inch)

Stem End Surface Grinding Limit: Less Than 0.2 mm (0.008 inch)