Cadillac Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Ring End Gap

First Compression Ring ...............................................................................................................................  0.250 - 0.400 mm (0.0098 - 0.0157 inch)
Second Compression Ring ..........................................................................................................................  0.350 - 0.050 mm (0.0138 - 0.0020 inch)
Oil Control Ring ..........................................................................................................................................  0.250 - 0.760 mm (0.0098 - 0.0299 inch)

Piston Ring to Groove Clearance

First Compression Ring ...............................................................................................................................  0.040 - 0.095 mm (0.0016 - 0.0037 inch)
Second Compression Ring ..........................................................................................................................  0.040 - 0.095 mm (0.0016 - 0.0037 inch)

Oil Control Ring .................................................................................................................................................................................  None - Side Sealing

Piston Ring Thickness

First Compression Ring ...............................................................................................................................  1.199 - 1.203 mm (0.0472 - 0.0474 inch)
Second Compression Ring ..........................................................................................................................  1.499 - 1.504 mm (0.0590 - 0.0592 inch)
Oil Control Ring ..........................................................................................................................................  2.530 - 2.555 mm (0.0996 - 0.1006 inch)