Pontiac Workshop Service and Repair Manuals

Piston Ring: Specifications

Piston Rings

Piston Ring End Gap  

First Compression Ring   .......................................................................................................................................  0.150-0.300 mm 0.0059-0.0118 in
Second Compression Ring   ...................................................................................................................................  0.280-0.480 mm 0.0110-0.0189 in
Oil Control Ring   ..................................................................................................................................................  0.150-0.600 mm 0.0059-0.0236 in

Piston Ring to Groove Clearance  

First Compression Ring   .......................................................................................................................................  0.030-0.065 mm 0.0012-0.0026 in
Second Compression Ring   ...................................................................................................................................  0.015-0.060 mm 0.0006-0.0024 in
Oil Control Ring   ..................................................................................................................................................  0.030-0.170 mm 0.0012-0.0067 in

Piston Ring Thickness  

First Compression Ring   .......................................................................................................................................  1.175-1.190 mm 0.0463-0.0469 in
Second Compression Ring   ...................................................................................................................................  1.470-1.495 mm 0.0579-0.0589 in

Oil Control Ring   ..................................................................................................................................................  2.360-2.480 mm 0.0929-0.0976 in