A8 Quattro Sedan V8-4.2L (BGK) (2006)
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Valve: Specifications
Valve Dimensions
‹› Valves must not be reground. Only refacing is permitted.
CAUTION!
‹› Worn sodium filled exhaust valves must not be scrapped without first being properly treated.
‹› Using a metal saw, the valves must be cut into two pieces between the shaft center and valve head. While doing this, do not come into
contact with water. At the very most, throw 10 of the prepared valves into a bucket filled with water. Then, move quickly away,
because a sudden chemical reaction will occur during which the sodium is burnt away.
‹› The treated parts may then be discarded through conventional disposal channels.
