Piston Ring, Engine

Piston Rings
End gap
Top 0.15-0.30 mm (0.0059-0.0118 inch)
Intermediate 0.25-0.50 mm (0.0098-0.0196 inch)
Oil control 0.15-0.65 mm (0.0059-0.0256 inch)
Ring groove width
Top 1.502-1.505 mm (0.0591-0.0592 inch)
Intermediate 1.52-1.54 mm (0.0598-0.0606 inch)
Oil control 3.030-3.050 mm (0.1193-0.1201 inch)
Ring width 1.49-1.46 mm (0.0587-0.0575 inch)
Ring-to-groove clearance
Top 0.030-0.050 mm (0.0012-0.0020 inch)
Intermediate 0.030-0.080 mm (0.0012-0.0031 inch)