Valve Specifications

VALVE SPECIFICATIONS

Application

Specification

Intake

Head Diam. In. (mm)

1.295-1.303 (32.89-33.10)

Face Angle

45°

Seat Angle

45°

Seat Width In. (mm)

⁽¹⁾ .049-.061 (1.25-1.55)

Stem Diameter In. (mm)

⁽²⁾ .2591-.2594 (6.580-6.590)

Stem Clearance In. (mm)

⁽³⁾ .0015-.0040 (.04-.10)

Valve Lift

n/a

Exhaust

Head Diam. In. (mm)

1.079-1.087 (27.40-27.60)

Face Angle

45°

Seat Angle

45°

Seat Width In. (mm)

⁽¹⁾ .049-.061 (1.25-1.55)

Stem Diameter In. (mm)

⁽⁴⁾ .2579-.2583 (6.550-6.560)

Stem Clearance In. (mm)

⁽⁵⁾ .004-.006 (.10-.15)

Valve Lift

n/a

⁽¹⁾	Seat width service limit .08" (2.0 mm).

⁽²⁾	Intake valve stem diameter service limit .285" (6.55 mm).

⁽³⁾	Intake valve clearance service limit .006" (.15 mm).

⁽⁴⁾	Exhaust valve stem diameter service limit .257" (6.53 mm).

⁽⁵⁾	Exhaust valve stem clearance service limit .009" (.23 mm).