Valve Seat

WIDTH (INTAKE AND EXHAUST):
Standard (New) 1.25 - 1.55 mm (0.049 - 0.061 inch)
Service Limit 2.0 mm (0.08 inch)

STEM INSTALLED HEIGHT:

Intake:
Standard (New) 37.465 - 37.935 mm (1.4750 - 1.4935 inch)
Service Limit 38.185 mm (1.5033 inch)

Exhaust:
Standard (New) 37.165 - 37.635 mm (1.4635 - 1.4817 inch)
Service Limit 37.885 mm (1.4915 inch)