Audi AMB Service Manual page 164

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Outer intake valves
31.0 mm
Measured distance minus minimum dimension = maximum permissible refacing dimension.
Example for outer intake valve:
-
=
NOTE:
If the max. permissible refacing dimension is 0 mm or less than 0 mm,

repeat the measurement with new valve. If the measured result is again 0
mm or less than 0 mm, replace the cylinder head.
Refacing valve seats
Fig. 226: Refacing Valve Seats Dimension
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Dimension
dia. a
b
Z
a
ß
gamma
Dimension
dia. a
b
Z
2005 Audi A4 Quattro
Center intake valves
32.2 mm
Measured distance
Minimum dimension
Max. permissible refacing dimension
1:01:07 AM
mm
mm
Cylinder head, bottom edge
45 °
30 °
60 ° Adjustment angle (bottom)
mm
mm
Cylinder head, bottom edge
Page 152
Exhaust valves
31.9 mm
31.4 mm
- 31.0 mm
= 0.4 mm
Intake valve seat
26.2
1.5...1.8
Valve seat angle
Adjustment angle (top)
Exhaust valve seat
29.0
1.8