Valve seat

Item
Measurement
Qualification
Standard or New
Service Limit
Valve seat
Width
Intake
1.25−1.55 mm (0.049−0.061 in.)
2.00 mm (0.079 in.)
Exhaust
1.25−1.55 mm (0.049−0.061 in.)
2.00 mm (0.079 in.)
Stem installed height
Intake
44.0−44.5 mm (1.73−1.75 in.)
44.7 mm (1.76 in.)
Exhaust
44.0−44.5 mm (1.73−1.75 in.)
44.7 mm (1.76 in.)