Piston Ring, Engine

PISTON RING GAP & GROOVE CLEARANCE

Piston Ring End Gap
First Compression Ring 0.2-0.4 mm (0.0079-0.0157 in)
Second Compression Ring 0.36-0.51 mm (0.0142-0.0201 in)
Oil Control Ring 0.250-0760 mm (0.0098-0.0299 in)

Piston Ring to Grove Clearance
First Compression Ring 0.043-0.093 mm (0.0017-0.0037 in)
Second Compression Ring 0.053-0.093 mm (0.0021-0.0037 in)
Oil Control Ring 0.059-0.215 mm (0.0023-0.0085 in)