| Outer intake valve | Center intake valve | Exhaust valve |
|---|---|---|
| 34.0 mm (1.338 in.) | 33.7 mm (1.326 in.) | 34.4 mm (1.354 in.) |
MINIMUM DIMENSIONS: DISTANCE BETWEEN END OF VALVE STEM AND TOP SURFACE OF CYLINDER HEAD
The measured distance minus the minimum dimension equals the maximum permissible refacing dimension.
Example
Outer intake valve
Measured distance 34.4 mm (1.354 in.)
Minimum dimension -34.0 mm (1.338 in.)
Maximum permissible refacing =0.4 mm (0.0157 in.)
Note. If the measured distance is less than the minimum dimension, repeat the measurement with new valves or replace the cylinder head.
Scheme 75
| Valve Seat Angle | Dimension |
|---|---|
| Intake valve seat | |
| A | 26.2 mm (1.0314 in.) diameter |
| B | 1.5 to 1.8 mm (0.059 to 0.070) |
| Z | Lower cylinder head surface |
| A | 45° Valve seat angle |
| B | 30° Upper correction angle |
| L | 60° Lower correction angle |
| Exhaust valve seat | |
| A | 29.0 mm (1.114 in.) diameter |
| B | Approx. 1.8 mm (0.070) |
| Z | Lower cylinder head surface |
| A | 45° Valve seat angle |
| B | 30° Upper correction angle |
| L | 60° Lower correction angle |
VALVE SEAT SPECIFICATIONS