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7. Inspect for a loose valve seat in the cylinder head (218). The valve seat has an interference fit to the
cylinder head.
8. Clean the valve guide bores with a suitable tool. Remove all carbon or dirt from the bores.
The valve guide must be clean for the seat grinding tool to obtain proper results.
9. Grind the valve seat.
The recommendations of the manufacturer of the equipment should be followed carefully to obtain the
proper results. Regardless of what type of equipment is used, it is essential that valve guide bores be free
from carbon or dirt to ensure proper centering of the tool pilot in the guide.
10. Inspect the valve seats.
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The valve seats should be concentric to within 0.05 mm (0.0021 in) total indicator reading.
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If the valve seat has been ground, it may be necessary to shim the valve spring to attain the proper
spring installed height.
Refer to
Cylinder Head Assemble
.
CYLINDER HEAD ASSEMBLE
Tools Required
J 8062
Valve Spring Compressor
2004 Chevrolet Corvette
2004 ENGINE PERFORMANCE Engine Mechanical (Repair Instructions 2 Of 3) - 5.7L - Corvette
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