Cylinder Head Specifications

CYLINDER HEAD

Application

Specification

Warpage Limit

⁽¹⁾

Valve Seats

Intake Valve

Seat Angle

N/A

Maximum Seat Margin

1.6L

.020" (.50 mm)

1.8L

.024" (.60 mm)

Standard Seat Width

1.6L

.050" (1.40 mm)

1.8L

.059" (1.5 mm)

Exhaust Valve

Seat Angle

N/A

Maximum Seat Margin

1.6L

0" (0 mm)

1.8L

.024" (.60 mm)

Standard Seat Width

1.6L

.050" (1.40 mm)

1.8L

.051" (1.30 mm)

Valve Guides

Standard Oil Clearance

Intake

.0009"-.0022" (.023-.056 mm)

Exhaust

.0012"-.0025" (.030-.063 mm)

Maximum Oil Clearance

.0078" (.198 mm)

⁽¹⁾	Resurface cylinder head if warpage exceeds .0078" (.198 mm). Replace cylinder head if warpage exceeds .0158" (.401 mm).