Valve: Testing and Inspection

1. In order to determine valve stem height, measure the distance from the valve spring seat to the tip of the valve. The specifications for the valve stem height are as follows:
^ Intake valve: 35.30-36.92 mm nominal, 37.17 mm maximum
^ Exhaust valve: 33.85-35.38 mm nominal, 35.63 mm maximum
2. If the maximum length specification is exceeded, the valve or the cylinder head must be replaced.





3. Measure the valve seat width. The specifications for seat width are as follows:
^ Intake valve seat width: 0.450-0.850 mm (0.017-0.033 inch)
^ Exhaust valve seat width: 0.700-1.100 mm (0.027-0.043 inch)