Checking Ring To Groove Clearance
WARNING: This page is about a different car, the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Jetta, 1996 Volkswagen Passat, and 1996 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- Clean piston ring groove before checking.
RING TO GROOVE CLEARANCEPISTON RING GAP SPECIFICATIONS
| Piston ring | Side clearance - mm (in.) | ||
| New | Wear limit | ||
| Top compression ring | |||
| AAZ | 0.09-0.12 (0.0035-0.0047) | 0.25 (0.0098) | |
| 1ZU, AHU | 0.06-0.12 (0.0024-0.0047) | 0.25 (0.0098) | |
| 2nd compression ring | 0.05-0.08 (0.0020-0.0031) | 0.25 (0.0098) | |
| Oil scraper ring | 0.03-0.06 (0.0012-0.0024) | 0.15 (0.0059) | |