Piston Ring, Engine

Piston ring side clearance
Standard
No. 1 0.04-0.078mm (0.0016-0.0031 in.)
No.2 0.03-0.07mm (0.0012-0.0027in.)
Oil ring 0.06-0.15mm (0.0024-0.0059in.)
Limit
No. 1 0.1mm (0.004in.)
No.2 0.1mm (0.004in.)
Oil ring 0.2mm (0.008in.)

Piston ring end gap
Standard
No. 1 0.17-0.32mm (0.0067-0.0126in.)
No.2 0.32-0.47mm (0.0126-0.0185in.)
Oil ring 0.20-0.70mm (0.0079-0.0275in.)
Limit
No.1 0.6mm (0.0236in.)
No.2 0.7mm (0.0275in.)
Oil ring 0.8mm (0.0315in.)