Operation CHARM: Car repair manuals for everyone.

Piston Ring

Ring Groove Width Oil Ring 3.030 - 3.055 Millimeter (mm)
Piston Ring Gap Compression (Top) - Gauge Diameter 0.100 - 0.250 Millimeter (mm)
Compression (Bottom) - Gauge Diameter 0.27 - 0.42 Millimeter (mm)
Oil Ring (Steel Rail) - Gauge Diameter 0.15 - 0.65 Millimeter (mm)
Compression (Top) Service Limit 0.50 Millimeter (mm)
Compression (Bottom) - Service Limit 0.65 Millimeter (mm)
Oil Ring (Steel Rail) - Service Limit 0.90 Millimeter (mm)