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 1.3 mm (0.051 inch)
Limit 0.8 mm (0.031 inch)
Stem Diameter 6.0 mm (0.234 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 - 0.09 mm (0.0020 - 0.0035 inch)
Limit 0.15 mm (0.0059 inch)
Stem Projection
Intake
Standard 49.30 mm (1.9409 inch)
Limit 49.80 mm (1.9606 inch)
Exhaust
Standard 49.35 mm (1.9429 inch)
Limit 49.85 mm (1.9626 inch)
Total Length
Intake:
Standard 110.15 mm (4.337 inch)
Limit 109.65 mm (4.317 inch)
Exhaust
Standard 113.70 mm (4.476 inch)
Limit 113.20 mm (4.457 inch)