Valve, Intake/Exhaust

DIMENSIONS
Face Angle 45 - 45.5°
Length (Overall Height)
Standard Value
Intake 112.30 mm (4.4213 inch)
Exhaust 114.1 1 mm (4.4925 inch)
Limit
Intake 111.80 mm (4.4016 inch)
Exhaust 113.61 mm (4.4728 inch)
Margin
Standard Value
Intake 1.0 mm (0.39 inch)
Exhaust 1.2 mm (0.047 inch)
Limit
Intake 0.5 mm (0.020 inch)
Exhaust 0.7 mm (0.028 inch)
Stem Outer Diameter
Intake 6.0 mm (0.236 inch)
Exhaust 5.9 mm (0.232 inch)
Stem To Guide Clearance
Standard Value
Intake 0.02 - 0.05 mm (0.0008 - 0.020 inch)
Exhaust 0.03 - 0.07 mm (0.0012 - 0.028 inch)
Limit
Intake 0.10 mm (0.0039 inch)
Exhaust 0.15 mm (0.0059 inch)
Stem Projection
Standard Value 49.30 mm (1.9409 inch)
Limit 49.80 mm (1.9606 inch)