Valve Guides
- Measure valve stem-to-guide clearance. Valve guides must be reamed for oversize valves if stem-to-guide oil clearance exceeds specification. See CYLINDER HEAD table under ENGINE SPECIFICATIONS. Valves are available in .015" (.38 mm) and .030" (.76 mm) oversize.
- Valve guides may also be bored out and replaced with a service guide if oversized valves are not available or guide is damaged. Ream valve guides until proper stem-to-guide oil clearance exists.