Volkswagen Workshop Service and Repair Manuals

Piston Ring: Specifications

DIMENSIONS 

Piston Ring Groove Clearance:

New:

1st Compression Ring ...................................................................................................................................  0.06-0.12 mm (0.0024-0.0047 inch)
2nd Compression Ring ..................................................................................................................................  0.05-0.08 mm (0.0020-0.0032 inch)
Oil Scraper Ring ............................................................................................................................................  0.03-0.06 mm (0.0012-0.0024 inch)

Wear Limit:

1st Compression Ring ........................................................................................................................................................  0.25 mm (0.0098 inch)
2nd Compression Ring .......................................................................................................................................................  0.25 mm (0.0098 inch)
Oil Scraper Ring ................................................................................................................................................................  0.15 mm (0.0059 inch)

Piston Ring End Gap Clearance:

New:

1st Compression Ring ...................................................................................................................................  0.20-0.40 mm (0.0079-0.0158 inch)
2nd Compression Ring ..................................................................................................................................  0.20-0.40 mm (0.0079-0.0158 inch)
Oil Scraper Ring ............................................................................................................................................  0.25-0.50 mm (0.0098-0.0197 inch)

Wear Limit:

1st Compression Ring ..........................................................................................................................................................  1.0 mm (0.0394 inch)
2nd Compression Ring .........................................................................................................................................................  1.0 mm (0.0394 inch)
Oil Scraper Ring ..................................................................................................................................................................  1.0 mm (0.0394 inch)