Valve Guide: Service and Repair

REPLACEMENT
1. Using the push rod and a press, remove the valve guide toward cylinder head gasket surface.
2. Rebore valve guide hole to the new oversize valve guide outside diameter.
Valve guide hole diameters
0.05 O.S. 11.05 - 11.07 mm (0.4350 - 0.4358 inch)
0.25 O.S. 11.25 - 11.27 mm (0.4429 - 0.4437 inch)
0.50 O.S. 11.50 - 11.52 mm (0.4528 - 0.4535 inch)

NOTE: Do not install a valve guide of the same size again.

3. Working from the cylinder head top surface, press fit the valve guide.
4. After installing valve guides, insert new valves in them to check for sliding condition.
5. When valve guides have been replaced, check for valve contact and correct valve seats as necessary.