Valve dimensions
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2004 Audi A6, 2003 Audi S6, 2003 Audi A6, 2002 Audi S6, and 2002 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not reface valves. Only hand-lapping is permissible.
VALVE DIMENSIONS
| Dimension | Intake valve | Exhaust valve |
|---|---|---|
| Diameter -a- | 28.8-27.0 mm (1.055-1.063 in.) | 29.8-30.0 mm (1.173-1.181 in.) |
| Diameter -b- | 5.96-5.97 mm (0.2346-0.2350 in.) | 5.94-5.95 mm (0.2339-0.2343 in.) |
| Length -c- | 104.84-105.34 mm (4.1276-4.1472 in.) | 103.64-104.14 mm (4.08093-4.1000 in.) |
| Angle, alpha | 45° | 45° |
WARNING:
Sodium-filled exhaust valves must not be scrapped until they have been properly treated as follows:
- Saw valves in two sections using metal saw at a point between the center of the valve stem and the valve head. The valves must not come into contact with water when this is done.
- Throw the valves into a bucket of water (not more than 10 at a time) and step back. A sudden chemical reaction will occur during which the sodium filling burns. After this treatment the valves can be scrapped normally.