Conical
Note installed position
27 - 25 Nm
28 - Housing for Camshaft Position (CMP) sensor G40
29 - 10 Nm
Valve dimensions
Fig. 174: Valve Dimensions
Courtesy of VOLKSWAGEN UNITED STATES, INC.
NOTE:
Intake and exhaust valves must not be reworked. Only lapping is
permitted.
Dimension Intake valve Exhaust valve
dia. a mm 26.80...27.00 29.80...30.00
dia. b mm 5.95...5.97 5.94...5.95
c mm 104.84...105.34 103.64...104.14
a Angle ° 45 45
CAUTION: Worn exhaust valves with sodium filling must not be scrapped in the usual
way.
The valves must be cut into two pieces between the shaft center and the
valve head using a metal saw. When doing this they must not come into
contact with water. Throw a maximum of ten valves prepared in this way
into a bucket of water. Then step backward because a sudden chemical
reaction occurs during which the sodium filling is burned.
Parts treated in this way can be scrapped in the usual manner.
2005 Audi A4 Quattro
ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
1:01:03 AM Page 121
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