Valve, Intake/Exhaust

Dimensional Specifications
Face Angle 45 degrees - 45.5 degrees
Head Diameter:
Intake 48.52 - 48.78 mm (1.9103 - 1.9205 inch)
Exhaust 36.87 - 37.13 mm 1.4516 - 1.4618 inch)
Length (Overall):
Intake 113.45 - 114.21 mm (4.4666 - 4.4965)
Exhaust 114.92 - 115.68 mm (4.5244 - 4.5543 inch)
Stem Diameter:
Intake 6.931 - 6.957 mm (0.2729 - 0.2739 inch)
Exhaust 6.902 - 6.928 mm (0.2717 - 0.2728 inch)
Stem - to - Guide Clearance:
Standard:
Intake 0.018 - 0.069 mm (0.0008 - 0.0028 inch)
Exhaust 0.047 - 0.098 mm (0.0019 - 0.0039 inch)
Max. Allowable Stem -to- Guide Clearance (Rocking Method):
Intake 0.069 mm (0.0028 inch)
Exhaust 0.098 mm (0.0039 inch)