Piston Ring, Engine

Ring groove width
No. 1 ring groove 1.22 - 1.24 mm (0.0480 - 0.0488 in.) 1.26 mm (0.0496 in.)
No. 2 ring groove 1.22 - 1.24 mm (0.0480 - 0.0488 in.) 1.26 mm (0.0496 in.)
Oil ring groove 2.01 - 2.03 mm (0.0791 - 0.0799 in.) 2.05 mm (0.0807 in.)
Piston ring

Side clearance
No. 1 ring 0.03 - 0.07 mm (0.0012 - 0.0027 in.) 0.1 mm (0.004 in.)
No. 2 ring 0.03 - 0.07 mm (0.0012 - 0.0027 in.) 0.1 mm (0.004 in.)
Oil ring 0.06 - 0.15 mm (0.0024 - 0.0059 in.) 0.2 mm (0.008 in.)

End gap
No. 1 ring 0.17 - 0.32 mm (0.0067 - 0.0126 in.) 0.6 mm (0.0236 in.)
No. 2 ring 0.32 - 0.47 mm (0.0126 - 0.0185 in.) 0.7 mm (0.0275 in.)
Oil ring 0.20 - 0.70 mm (0.0078 - 0.0275 in.) 0.8 mm (0.0315 in.)