Valve, Intake/Exhaust

DIMENSIONS
Face Angle 45 - 45.5°
Margin
Intake
Standard 1.0 mm (0.039 inch)
Limit 0.5 mm (0.020 inch)
Exhaust
Standard 1.5 mm (0.059 inch)
Limit 1.0 mm (0.039 inch)
Overall Length
Intake
Standard 100.75 mm (3.967 inch)
Limit 100.25 mm (3.947 inch)
Exhaust
Standard 101.05 mm (3.978 inch)
Limit 100.55 mm (3.957 inch)
Stem Diameter 6.6 mm (0.260 inch)
Stem-To-Guide Clearance
Intake
Standard 0.02 - 0.050 mm (0.0008 - 0.0020 inch)
Limit 0.10 mm (0.0039 inch)
Exhaust
Standard 0.050 - 0.085 mm (0.0020 - 0.0035 inch)
Limit 0.15 mm (0.0059 inch)
Stem Projection
Intake
Standard 43.70 mm (1.720 inch)
Limit 44.20 mm (1.740 inch)
Exhaust
Standard 43.30 mm (1.705 inch)
Limit 43.80 mm (1.724 inch)