Piston Ring, Engine

Piston Ring End Gap
First Compression Ring - Nominal 0.150-0.300 mm (0.0059-0.0118 in)
First Compression Ring - Maximum, Ring in Bore 0.390 mm (0.1535 in)
Second Compression Ring - Nominal 0.280-0.480 mm (0.0110-0.0189 in)
Second Compression Ring - Maximum, Ring in Bore 0.560 mm (0.0220 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)