Valve, Intake/Exhaust

DIMENSIONS

Clearance (Cold):
Intake: 0.26 - 0.34 mm (0.010 - 0.013 inch)
Exhaust: 0.29 - 0.37 mm (0.011 - 0.015 inch)

Clearance (Hot):
Intake: 0.304 - 0.416 mm (0.012 - 0.016 inch)
Exhaust: 0.308 - 0.432 mm (0.012 - 0.017 inch)

Head Diameter "D":
Intake: 36.0 - 36.3 mm (1.417 - 1.429 inch)
Exhaust: 31.2 - 31.5 mm (1.228 - 1.240 inch)

Length "L":
Intake: 97.32 - 97.82 mm (3.8315 - 3.8512 inch)
Exhaust: 94.85 - 95.35 mm (3.7342 - 3.7539 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)