Valve Seat Dimensions

Intake Width
Standard 0.79-1.23 mm (0.0394-0.0512 in.)
Service Limit 1.66 mm (0.0653 in. max.)
Exhaust Width
Standard 1.05-1.49 mm (0.0512-0.0639 in.)
Service Limit 1.92 mm (0.0756 in. max.)
Angle (Intake and Exhaust)
Standard 44.5-45.5° (44.5-45.5°)
Service Limit 44.5°-45° (44.5°-45°)
Valve Seat Out Side Diameter
Intake 33.49-33.51 mm (1.3185-1.3193 in.)
Exhaust 28.49-28.5 mm (1.121-1.122 in.)