Measure protruding length of each valve stem. See ENGINE SPECIFICATIONS. If length is within service limit, use valve spring shims to bring measurement within acceptable limit. If length is greater than service limit, replace valve or cylinder head.
| Application | In. (mm) | |
|---|---|---|
| Intake | ||
| New | 1.988 (50.5) | |
| Acceptable | 1.969-2.008 (50.0-51.0) | |
| Service Limit | 2.008-2.047 (51.0-52.0) | |
| Exhaust | ||
| New | 1.949 (49.5) | |
| Acceptable | 1.929-1.969 (49.0-50.0) | |
| Service Limit | 1.969-2.008 (50.0-51.0) | |
VALVE STEM INSTALLED HEIGHT