Refacing valve seats
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of VOLKSWAGEN UNITED STATES, INC.
| Dimension |
Intake valve seat |
| dia. a |
mm |
26.2 |
| b |
mm |
1.5...1.8 |
| Z |
Cylinder head, bottom edge |
| α |
45 ° |
Valve seat angle |
| β |
30 ° |
Adjustment angle (top) |
| γ |
60 ° |
Adjustment angle (bottom) |
| Dimension |
Exhaust valve seat |
| dia. a |
mm |
29.0 |
| b |
mm |
1.8 |
| Z |
Cylinder head, bottom edge |
| α |
45 ° |
Valve seat angle |
| β |
30 ° |
Adjustment angle (top) |
| γ |
60 ° |
Adjustment angle (bottom) |