Valve, Intake/Exhaust

Valve Dimensions

Fig. 3:

NOTE: Do not grind valves. Only lapping is permitted.

Maximum Permissible Refacing Dimension Calculating

- Insert valve and press firmly against seat.

NOTE: If you plan to replace the valve use a new valve for the calculation.





- Measure distance -a- between end of valve stem and upper edge of cylinder head.

- Calculate maximum permissible reworking dimension from measured distance -a- and minimum dimension.

Minimum dimension:
Intake valve: 33.9 mm
Exhaust valve: 34.1 mm

Measured distance minus minimum dimension = maximum permissible reworking dimension.

Example:

Valve Seat, Refacing

Intake Valve:

Exhaust Valve: