Cylinder Head Specifications
WARNING: This page is about a different car, the 2004 Infiniti M45 and 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
CYLINDER HEAD
| Application |
In. (mm) |
| Cylinder Head Height |
4.98 (126.4) |
| Maximum Warpage |
.004 (.10) |
| Valve Seats |
| Seat Angle |
45 Degrees |
| Seat Width |
| Exhaust |
.0508-.0594 (1.29-1.51) |
| Intake |
.0430-.0516 (1.09-1.31) |
| Seat Bore (Oversize) |
| Exhaust |
1.2874-1.2880 (32.700-32.716) |
| Intake |
1.4764-1.4770 (37.500-37.516) |
| Valve Guides |
| Cylinder Head Valve Guide Bore I.D. |
| Standard |
.3927-.3935 (9.975-9.996) |
| Service Limit |
.4006-.4014 (10.175-10.196) |
| Valve Guide I.D. |
.2362-.2369 (6.000-6.018) |
| Valve Guide Installed Height |
| Exhaust |
.394-.409 (10.0-10.4) |
| Intake |
.398-.406 (10.1-10.3) |
| Valve Stem-To-Guide Oil Clearance |
| Exhaust |
| Standard |
.0012-.0022 (.030-.056) |
| Service Limit |
.004 (.10) |
| Intake |
| Standard |
.0008-.0018 (.020-.046) |
| Service Limit |
.003 (.08) |