Cylinder Head Specifications
WARNING: This page is about a different car, the 2000 Lexus SC 300, 2000 Lexus GS 300, 1999 Lexus SC 300, and 1999 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD
| Application | Specification | |||
|---|---|---|---|---|
| Maximum Warpage | ||||
| Cylinder Block Surface | .0039" (.100 mm) | |||
| Manifold Surface | .0039" (.100 mm) | |||
| Valve Seats | ||||
| Intake | ||||
| Seat Angle | 45° | |||
| Seat Width | .039-.055" (1.00-1.40 mm) | |||
| Exhaust | ||||
| Seat Angle | 45° | |||
| Seat Width | .047-.063" (1.19-1.60 mm) | |||
| Valve Guides | ||||
| Intake Valve | ||||
| Valve Guide Cylinder Head Bore I.D. | ||||
| Standard Valve Guide | .4325-.4333" (10.986-11.006 mm) | |||
| Oversize Valve Guide | .4344-.4353" (11.034-11.057 mm) | |||
| Valve Guide I.D. | .2366-.2374" (6.010-6.030 mm) | |||
| Valve Guide Installed Height | .484-.500" (12.30-12.70 mm) | |||
| Valve Stem-To-Guide Oil Clearance | ||||
| Standard | .0010-.0024" (.025-.061 mm) | |||
| Wear Limit | .0031" (.080 mm) | |||
| Exhaust Valve | ||||
| Valve Guide Cylinder Head Bore I.D. | ||||
| Standard Valve Guide | .4325-.4333" (10.986-11.006 mm) | |||
| Oversize Valve Guide | .4344-.4353" (11.034-11.057 mm) | |||
| Valve Guide I.D. | .2366-.2374" (6.010-6.030 mm) | |||
| Valve Guide Installed Height | .449-.465" (11.40-11.81 mm) | |||
| Valve Stem-To-Guide Oil Clearance | ||||
| Standard | .0012-.0026" (.030-.066 mm) | |||
| Wear Limit | .0039" (.100 mm) | |||