Valve Guide

Valve Stem to Guide Clearance
Intake 0.020-0.069 mm (0.00078-0.00272 inch)
Exhaust 0.046-0.095 mm (0.0018-0.0037 inch)

Valve Head Diameter
Intake 37 mm 1.46 inch)
Exhaust 30 mm 1.18 inch)
Gauge Diameters 35.0 and 28.0 mm (1.378-1.102 inch)
Valve Face Runout Limit 0.05 mm (0.002 inch)
Valve Face Angle 45.5 degrees

Stem Diameter,(Std)
Intake 6.975-6.995 mm (0.2754-0.2746 inch)
Exhaust 6.949-6.970 mm (0.2744-0.2736 inch)
Valve Springs Compression Pressure (N (Lb) @ Spec Length)
Intake 711.47 N @ 26.19 mm (159.9 ft. lbs. @ 1.031 inch)
Exhaust 711.47 N @ 26.19 mm 159.9 ft. lbs. @ 1.031 inch)

Free Length (Approximate)
Intake 42.16 mm 1.6598 inch)
Exhaust 42.16 mm 1.6598 inch)
Installed Pressure (N (ft. lbs.) @ Spec. Length)
Intake 289.1 N @ 36.14 mm 64.99 ft. lbs. @ 1.4228 inch)
Exhaust 289.1 N @ 36.14 mm. (64.99 ft. lbs. @) 1.4228 inch)
Service Limit 10% Pressure Loss @ 28.02 mm (1.103 inch)