Valve Guide
Diameter of Valve StemIntake
Standard 5.977 mm - 5.959 mm (0.2353 inch - 0.2346 inch)
Limit 5.90 mm (0.2323 inch)
Exhaust
Standard 5.952 mm - 5.970 mm (0.2343 inch - 0.2350 inch)
Limit 5.90 mm (0.2323 inch)
Inside Diameter of the Vale Guide
Inlet clearance
Standard 0.023 mm - 0.056 mm (0.0009 inch - 0.0002 inch)
Limit 0.20 mm (0.00787 inch)
Exhaust clearance
Standard 0.030 mm - 0.063 mm (0.0012 inch - 0.0025 inch)
Limit 0.20 mm (0.00787 inch)
Valve guide upper end height
(Measured from the cylinder head upper face) 13.0 mm (0.5118 inch)
Protrusion of valve stem
Intake
Standard 39.32 mm (1.5480 inch)
Limit 39.47 mm (1.5539 inch)
Exhaust
Standard 39.3 mm (1.5472 inch)
Limit 39.45 mm (1.5531 inch)
Valve seat contact width
Standard 1.1 mm (0.0433 inch)
Limit 1.7 mm (0.0669 inch)
Valve contact surface angle 45°
Valve seat angle degree 90°