S5 Quattro Coupe V8-4.2L (CAUA) (2009)
/Page-515001.png)
Piston Ring: Specifications
Piston ring dimensions in mm
1st Compression ring
New ..................................................................................................................................................................................................... 0.20 to 0.35 mm
Wear limit ....................................................................................................................................................................................................... 0.80 mm
2nd Compression ring
New ..................................................................................................................................................................................................... 0.20 to 0.40 mm
Wear limit ....................................................................................................................................................................................................... 0.80 mm
Oil scraping ring
New ..................................................................................................................................................................................................... 0.20 to 0.40 mm
Wear limit ....................................................................................................................................................................................................... 0.80 mm
Piston ring dimensions in mm
1st Compression ring
New ................................................................................................................................................................................................. 0.035 to 0.085 mm
Wear limit ..................................................................................................................................................................................................... 0.200 mm
2nd Compression ring
New ................................................................................................................................................................................................. 0.005 to 0.045 mm
Wear limit ..................................................................................................................................................................................................... 0.150 mm
Oil scraping ring
New ................................................................................................................................................................................................. 0.010 to 0.050 mm
Wear limit ..................................................................................................................................................................................................... 0.200 mm