Note. Calculating maximum permissible machining dimension. Refer to Calculating maximum permissible machining dimension .
| Dimension | Exhaust valve seat | ||
|---|---|---|---|
| A | = | Diameter 26.7 mm | |
| B | = | Maximum permissible machining dimension | |
| C | = | 1.2...1.7 mm | |
| D | = | Max. diameter 29.0 mm | |
| R2 | = | Radius 2.0 mm | |
| Z | = | Bottom surface of cylinder head | |
| Α | = | 45° valve seat angle | |
| Β | = | 30° upper correction angle | |
| Gamma | = | 60° lower correction angle | |