Measuring piston ring side clearance
WARNING: This page is about a different car, the 2008 Audi RS 4 and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of VOLKSWAGEN UNITED STATES, INC.
- Clean ring groove of piston before checking.
| Piston ring dimensions in mm |
New |
Wear limit |
| 1. Compression ring |
0.04 to 0.09 |
0.20 |
| 2. Compression ring |
0.020 to 0.045 |
0.200 |
| Oil scraping ring |
0.03 to 0.05 |
0.15 |