Valve Specifications

VALVE SPECIFICATIONS

Application

In.(mm)

1.8L & 1.9L

Intake

Head Diam.

⁽¹⁾ 1.59 (40.4)

Face Angle

45°

Seat Angle

⁽²⁾ 45°

Seat Width

⁽³⁾ .048-.063 (1.21-1.60)

Stem Diameter

⁽⁴⁾ .315 (8.00)

Stem Clearance

⁽⁵⁾ .0009-.0022 (.023-.056)

Valve Lift

n/a

Exhaust

Head Diam.

⁽¹⁾ 1.34 (34)

Face Angle

45°

Seat Angle

⁽²⁾ 45°

Seat Width

⁽³⁾ .048-.063 (1.21-1.60)

Stem Diameter

⁽⁴⁾ .315 (8.0)

Stem Clearance

⁽⁵⁾ .0015-.0031 (.038-.079)

Valve Lift

n/a

2.0L

Intake

Head Diam.

⁽¹⁾ 1.67 (42.4)

Face Angle

45°

Seat Angle

⁽²⁾ 45°

Seat Width

⁽³⁾ .048-.063 (1.21-1.60)

Stem Diameter

⁽⁴⁾ .315 (8.00)

Stem Clearance

⁽⁵⁾ .0009-.0022 (.023-.056)

Valve Lift

n/a

Exhaust

Head Diam.

⁽¹⁾ 1.42 (36.1)

Face Angle

45°

Seat Angle

⁽²⁾ 45°

Seat Width

⁽³⁾ .048-.063 (1.21-1.60)

Stem Diameter

⁽⁴⁾ .315 (8.0)

Stem Clearance

⁽⁵⁾ .0015-.0031 (.038-.079)

Valve Lift

n/a

⁽¹⁾	Impulse intake valve head diameter is 1.67" (42.4 mm); exhaust valve head diameter is 1.34" (34.0 mm).

⁽²⁾	Correction angles for intake and exhaust valve seats are 15° and 75°.

⁽³⁾	Maximum valve seat width .078" (2.0 mm).

⁽⁴⁾	Minimun valve stem clearance is .310" (7.87 mm) for intake and .309 (7.85 mm) for exhaust.

⁽⁵⁾	Maximum valve stem clearance is .008" (.20 mm) for intake and .0097 (.25 mm) for exhaust.