Checking Piston Ring Gap
Courtesy of AUDI OF AMERICA, LLC
-- Push the piston ring squarely to the cylinder wall from above down in the lower cylinder opening approximately 15 mm from bottom edge of the cylinder. To push in use a piston without rings.
| Piston Ring Gap in Connection with the Two-Piece Oil Scraping Ring Dimensions in mm |
New |
Wear Limit |
| 1. Compression ring |
0.20 to 0.40 mm |
0.80 mm |
| 2. Compression ring |
0.20 to 0.40 mm |
0.80 mm |
| Oil Scraping Ring |
0.25 to 0.50 mm |
0.80 mm |
| PIston Ring Gap in Connection with the Three-Piece Oil Scraping Ring Dimensions in mm |
New |
Wear Limit |
| 1. Compression ring |
0.30 to 0.40 mm |
0.60 mm |
| 2. Compression ring |
0.40 to 0.50 mm |
0.70 mm |
| Oil Scraping Ring |
Cannot be measured |