Valve, Intake/Exhaust

Intake Stem Outer Diameter
Standard 6.949-6.962 mm (0.2736-0.274 in.)
Service Limit 6.935 mm (0.237 in. min.)
Exhaust Stem Outer Diameter
Standard 6.931-6.950 mm (0.276-0.2736 in.)
Service Limit 6.919 mm (0.272 in. min.)
Valve Guide Inner Diameter
Standard 6.987-7.013 mm (0.275-0.276 in.)
Service Limit 7.05 mm (0.278 in. max.)
Valve Guide Outer Diameter 11.393-11.407 mm (0.448-0.449 in.)
Intake Stem to Guide Clearance
Standard 0.025-0.064 mm (0.0010-0.0025 in.)
Service Limit 0.113 mm (0.004 in. max.)
Exhaust Stem to Guide Clearance
Standard 0.037-0.082 mm (0.0015-0.0032 in.)
Service Limit 0.131 mm (0.005 in. max.)
Intake Total Length
Standard 100.72-101.18 mm (3.9654-3.9835 in.)
Service Limit 100.64-101.26 mm (5.45-5.48 in.)
Exhaust Total Length
Standard 100.02-101.48 mm (3.9378-3.9559 in.)
Service Limit 99.94-100.56 mm (5.45-5.48 in.)
Intake Head Diameter 32.16-32.46 mm (1.2661-1.2780 in.)
Exhaust Head Diameter 27.30-27.60 mm (1.0748-1.0866 in.)
Intake Margin Width 0.75 mm (0.035 in. min.)
Exhaust Margin Width 0.75 mm (0.039 in. min.)
Face Angle (Intake and Exhaust)
Standard 45.0-45.5° (45.0-45.5°)
Service Limit 45.5°-45° (45.5°-45°)
Valve Tip Protrusion
Standard 40.95-41.55 mm (1.612-1.636 in.)
Service Limit 411.60 mm (1.638 in. max.)