Valve, Intake/Exhaust

Thickness Of Valve Head (Margin):
Intake:
Standard Value 1.0 mm (0.039 inch)
Limit 0.5 mm (0.019 inch)
Exhaust:
Standard Value 1.2 mm (0.047 inch)
Limit 0.7 mm (0.028 inch)
Stem Diameter:
Intake 6.0 mm (0.236 inch)
Exhaust 6.0 mm (0.236 inch)
Stem To Guide Clearance:
Intake:
Standard Value 0.02 - 0.05 mm (0.0008 - 0.0020 inch)
Limit 0.10 mm (0.004 inch)
Exhaust:
Standard Value 0.04 - 0.07 mm (0.0016 - 0.0028 inch)
Limit 0.15 mm (0.006 inch)
Valve Face Angle 45° - 45.5°