Valve: Specifications

Valve Overall Length:
Intake:
Standard Value 102.97 mm (4.0539 inch)
Limit 102.47 mm (4.0342 inch)
Exhaust:
Standard Value 102.67 mm (4.0421 inch)
Limit 102.17 mm (4.0224 inch)
Valve Thickness Of Valve Head (Margin):
Intake:
Standard Value 1.2 mm (0.047 inch)
Limit 0.7 mm (0.028 inch)
Exhaust:
Standard Value 2.0 mm (0.079 inch)
Limit 1.5 mm (0.059 inch)
Valve Stem Diameter:
Intake 8.0 mm (0.315 inch)
Exhaust 7.9 mm (0.311 inch)
Valve Stem To Guide Clearance:
Intake:
Standard value 0.03 - 0.06 mm (0.0012 - 0.0024 inch)
Limit 0.10 mm (0.004 inch)
Exhaust:
Standard Value 0.05 - 0.09 mm (0.0020 - 0.0035 inch)
Limit 0.15 mm (0.006 inch)
Valve Stem Projection:
Intake:
Standard Value 41.65 mm (1.6398 inch)
Limit 42.15 mm (1.6594 inch)
Exhaust:
Standard Value 41.65 mm (1.6398 inch)
Limit 42.15 mm (1.6594 inch)
Valve Face Angle 45° - 45.5°