Cylinder Head Specifications

WARNING: This page is about a different car, the 1992 Mercury Tracer, 1992 Ford Escort, 1991 Mercury Tracer, and 1991 Ford Escort. However, it is still accessible from the selected car via links, so may be relevant.

CYLINDER HEAD SPECIFICATIONS

Application

In. (mm)

Maximum Warpage

⁽¹⁾

Valve Seats

Seat Angle

45°

Seat Width

.069-.091 (1.75-2.31)

Maximum Seat Runout

.003 (.08)

Valve Guides

Intake Valve

Valve Guide Cylinder Head Bore I.D

.5310-.5324 (13.487-13.523)

Valve Guide I.D.

.3174-.3187 (8.062-8.095)

Valve Stem-To-Guide Oil Clearance

.0008-.0027 (.020-.069)

Exhaust Valve

Valve Guide Cylinder Head Bore I.D.

.5310-.5324 (13.487-13.523)

Valve Guide I.D.

.3174-.3187 (8.062-8.095)

Valve Stem-To-Guide Oil Clearance

.0018-.0037 (.046-.095)

⁽¹⁾	Warpage is .003" (.08 mm) per 6" (152.4 mm) area or .006" (.15 mm) overall. DO NOT machine more than .010" (.25 mm) from cylinder head original thickness.