Piston Ring, Engine

Piston top ring end gap mm (inch) 0.200-0.450 (0.008-0.018)
Piston bottom ring end gap mm (inch) 0.450-0.700 (0.018-0.028)
Piston top ring groove width mm (inch) 1.64-1.66 (0.0645-0.0654)
Piston bottom ring groove width mm (inch) 1.79-1.81 (0.0705-0.0713)
Piston oil ring groove width mm (inch) 3.5-3.53 (O.1378-0.1399)
Piston top ring width mm (inch) 1.578-1.598 (0.062-0.063)
Piston bottom ring width mm (inch) 1.728-1.74(0.068-0.069)
Piston top ring-to-groove clearance mm (inch) 0.050-0.082 (0.002-0.0003)
Piston bottom ring-to-groove clearance mm (inch) 0.050-0.082 (0.002-0.003)