Valve Dimensions
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Audi S8, 2015 Audi A8 Quattro, 2014 Audi S8, 2014 Audi A8 Quattro, and 2013 Audi S8. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Intake and exhaust valves must not be reworked. Only grinding is permitted.
| Dimension | Intake valve | Exhaust valve | |
|---|---|---|---|
| Diameter a | mm | 33.85 ± 0.10 | 28.0 ± 0.1 |
| Diameter b | mm | 5.98 ± 0.007 | 5.935 ± 0.007 |
| c | mm | 103.97 ± 0.20 | 101.87 ± 0.2 |
| α | ∠° | 45 | 45 |
WARNING:
Risk of injury if exhaust valves with sodium filling are disposed of improperly.
- Cut exhaust valve with sodium filling into 2 parts with a metal saw between shaft center and valve plate. While doing this, do not come into contact with water.
- Throw at the most 10 such sawed exhaust valves in a bucket filled with water and step back immediately.
- When there is contact with water, a sudden chemical reaction occurs which burns the sodium filling.
- The treated parts may then be discarded through conventional disposal channels.