Valve, Intake/Exhaust

Valves
Face Angle - Intake and Exhaust 44.5 - 45°
Head Diameter
Intake 34.67 - 34.93 mm (1.364 - 1.375 in.)
Exhaust 30.37 - 30.63 mm (1.195 - 1.205 in.)
Valve Length (Overall)
Intake 112.76 - 113.32 mm (4.439 - 4.461 in.)
Exhaust 109.59 - 110.09 mm (4.314 - 4.334 in.)
Valve Stem Diameter
Intake 5.934 - 5.952 mm (0.2337 - 0.2344 in.)
Exhaust 5.906 - 5.924 mm (0.2326 - 0.2333 in.)
Valve Margin
Intake
Standard 1.285 - 1.615 mm (0.050 - 0.063 in.)
Service Limit 0.95 mm (1/32 in.)
Exhaust
Standard 0.985 - 1.315 mm (0.038 - 0.051 in.)
Service Limit 1.05 mm (3/64 in.)
Valve Stem Tip Height
Intake 48.04 mm (1.891 in.)
Exhaust 47.99 mm (1.889 in.)
Valve Stem to Guide Clearance
Intake
Standard 0.048 - 0.066 mm (0.0018 - 0.0025 in.)
Max. Allowable 0.076 mm (0.003 in.)
Service Limit 0.25 mm (0.010 in.)
Exhaust
Standard 0.0736 - 0.094 mm (0.0029 - 0.0037 in.)
Max. Allowable 0.101 mm (0.004 in.)
Service Limit 0.25 mm (0.010 in.)