Refacing exhaust valve seat
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| Dimension | Intake valve seat | ||
| Dia. a | mm | 29,0 | |
| b | mm | max. perm. refacing dimension * See note | |
| c | mm | approx. 1.8 | |
| Z | Cylinder head lower edge | ||
| α | 45 ° valve seat angle | ||
| β | 30 ° upper correction angle | ||
| γ | 60 ° lower correction angle | ||
* Calculating maximum permissible refacing dimension The maximum permissible refacing dimension is calculated as follows: under Valve seats, refacing .