Valve Guides
- Check valve stem oil clearance. Ensure valve stem diameter is within specification. Replace valve guide with oversize valve guide if clearance exceeds specification. See CYLINDER HEAD table under ENGINE SPECIFICATIONS.
- Oversize valve guides are available in .002" (.05 mm), .010" (.25 mm) and .020" (.50 mm) oversize. Replacement procedure is not available from manufacturer. Cylinder head must be reworked to proper dimension for oversize valve guide installation. See VALVE GUIDE REWORK DIMENSIONS table.
VALVE GUIDE REWORK DIMENSIONS
| Oversize Valve Guide In. (mm) | Cylinder Head Bore Diameter In. (mm) |
|---|---|
| .002 (.05) | .4744-.4751 (12.050-12.068) |
| .010 (.25) | .4823-.4830 (12.250-12.268) |
| .020 (.50) | .4921-.4928 (12.500-12.518) |