| Cylinder Head |
| Height |
5.589-5.593" (141.96-142.06 mm) |
| Maximum Warpage |
0.002" (0.05 mm) |
| Valve Seats |
| Intake & Exhaust |
| Seat Angle |
45° |
| Seat Width (B18C1 Engine) |
| Standard |
0.049-0.061" (1.24-1.55 mm) |
| Service Limit |
0.080" (2.03 mm) |
| Seat Width (B18C5 Engine) |
| Standard |
0.033-0.045" (0.84-1.14 mm) |
| Service Limit |
0.080" (2.03 mm) |
| Valve Guides |
| Intake & Exhaust |
| Valve Guide I.D. |
| Standard |
0.217-0.218" (5.51-5.53 mm) |
| Service Limit |
0.219" (5.56 mm) |
| Valve Guide Installed Height |
0.494-0.514" (12.54-13.05 mm) |
| Valve Stem-To-Guide Clearance |
| Intake |
| Standard |
0.0010-0.0022" (0.025-0.055 mm) |
| Service Limit |
0.003" (0.08 mm) |
| Exhaust |
| Standard |
0.0020-0.0031" (0.050-0.080 mm) |
| Service Limit |
0.004" (0.10 mm) |