Piston Ring, Engine

Piston Rings
Piston Ring End Gap - First Compression Ring 0.15-0.30 (0.006-0.012� in.)
Piston Ring End Gap - Second Compression Ring 0.20-0.45 (0.008-0.018� in.)
Piston Ring End Gap - Oil Control Ring - Rails 0.15-0.51 (0.006-0.020� in.)
Piston Ring to Groove Clearance - First Compression Ring 0.04-0.08 (0.0015-0.0031� in.)
Piston Ring to Groove Clearance - Second Compression Ring 0.030-0.070 (0.0012-0.0030� in.)
Piston Ring to Groove Clearance - Oil Control Ring 0.027-0.176 (0.0011-0.0069� in.)
Piston Ring Thickness - First Compression Ring 1.170-1.190 (0.0461-0.0469� in.)
Piston Ring Thickness - Second Compression Ring 1.471-1.490 (0.0579-0.0587� in.)
Piston Ring Thickness - Oil Control Ring - Rail - Maximum 0.473 (0.0186� in.)
Piston Ring Thickness - Oil Control Ring - Spacer 1.460-1.537 (0.0575-0.0605� in.)