Valve, Intake/Exhaust

Dimensional Specifications
Valves
Face Angle 43.250 - 43.750
Head Diameter
Intake 47.752 mm (1.88 inch)
Exhaust 41.072 (1.617 inch)
Length (Overall)
Intake 126.21 - 126.85 mm (4.969 - 4.994 inch)
Exhaust 126.44 - 127.30 mm (4.978 - 5.012 inch)
Lift (@ zero lash)
Intake 10.414 mm (0.410 inch)
Exhaust 10.592 mm (0.417 inch)
Stem Diameter
Intake 9.449 - 9.474 mm (0.372 - 0.373 inch)
Exhaust 9.423 - 9.449 mm (0.371 - 0.372 inch)
Stem to Guide Clearance
Intake 0.0254 - 0.0762 mm (0.001 - 0-003 inch)
Exhaust 0.0508 - 0.1016 mm (0.002 - 0.004 inch)
Service Limit 0.4318 (0.017 inch)