Valve Guide: Testing and Inspection

NOTE: Clean all parts, being sure to remove all gasket fragments, dirt and oil. Be careful not to damage the joints or friction surfaces of aluminum alloy components.

Fig. 10 Valve Guide Inspection:

1. Measure each valve guide inner bore diameter and record, Fig. 10. Guide bore diameter should be 0.3433-0.3443 inch. Valve stem to guide clearance should be calculated. Measure valve to guide clearance. Refer to Valve, Intake/Exhaust for clearance specifications. If clearance exceeds specifications, ream valve guide for the next oversize valve stem, 0.3716-0.3723 inch for intake valve and 0.3711-0.3718 inch for exhaust valve.