Valve Specifications

VALVE SPECIFICATIONS

Application

In. (mm)

Intake

Head Diam.

⁽¹⁾ 1.492-1.500 (37.89-38.10)

Face Angle

45°

Seat Angle

45°

Seat Width

⁽³⁾ .0433-.0669 (1.099-1.699)

Stem Diameter

⁽⁴⁾ .2744-.2750 (6.969-6.985)

Stem Clearance

⁽⁶⁾ .0010-.0024 (.025-.060)

Valve Lift

n/a

Exhaust

Head Diam.

⁽²⁾ 1.256-1.264 (31.90-32.10)

Face Angle

45°

Seat Angle

45°

Seat Width

⁽³⁾ .0433-.0669 (1.099-1.699)

Stem Diameter

⁽⁵⁾ .2742-.2748 (6.965-6.979)

Stem Clearance

⁽⁶⁾ .0012-.0026 (.030-.065)

Valve Lift

n/a

⁽¹⁾	Minimum intake valve head thickness (margin) is .04" (1.0 mm).

⁽²⁾	Minimum exhaust valve head thickness (margin) is .05" (1.3 mm).

⁽³⁾	Maximum valve seat runout is .0016" (.040 mm).

⁽⁴⁾	Minimum diameter is .2724" (6.920 mm).

⁽⁵⁾	Minimum diametre is .2722" (6.915 mm).

⁽⁶⁾	Maximum valve stem-to-guide clearance is .008" (.20 mm).