Cylinder Head

Cleaning
Remove all gasket material from cylinder head and block. Be careful not to gouge or scratch the aluminum head sealing surface.

Inspection

Checking Cylinder Head Flatness:

1. Cylinder head must be flat within 0.1 mm (0.004 inch).
2. Inspect camshaft bearing journals for scoring.

1. Remove carbon and varnish deposits from inside of valve guides with a reliable guide cleaner.

Checking Wear On Valve Guides - Typical:

2. Using a small hole gauge and a micrometer, measure valve guides in 3 places top, middle and bottom. Refer to Valve Guide Specification Chart. Replace guides if they are not within specification.

Valve Guide Height:

3. Check valve guide height.





Valve Guide Specification Chart