A4 Quattro Sedan L4-1.8L Turbo (AWM) (2001)
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Valve: Specifications
Valve dimensions
Note:
Intake and exhaust valves must not be reworked. Only lapping in is permitted.
Diameter -a-
Intake Valve ......................................................................................................................................................................................... 26.8 to 27.00 mm
Exhaust Valve ....................................................................................................................................................................................... 29.8 to 30.00 mm
Diameter -b-
Intake Valve ............................................................................................................................................................................................ 5395 - 5.97 mm
Exhaust Valve ......................................................................................................................................................................................... 5.97 to 5.95 mm
Diameter-c-
Intake Valve ................................................................................................................................................................................... 104.84 to 105.34 mm
Exhaust Valve ................................................................................................................................................................................. 103.64 to 104.14 mm
@ ............................................................................................................................................................................................................................ 45 (45°)
CAUTION! Worn exhaust valves with sodium filling must not be disposed of until they have been treated as follows:
The valves must be sawn into two sections with a metal saw at a point between the center of the shaft and the valve head. They
must not come into contact with water while this is done. Then throw the valves into a bucket of water (not more than ten at a
time). Step back immediately because a chemical reaction occurs when the sodium filling burns.
After this treatment the valves can be disposed of in the normal way.
