Piston Ring, Engine

Ring Gap:
Compression Ring (Top) 0.30 - 0.55 mm (0.012 - 0.022 inch)
Compression Ring (2nd) 0.55 - 0.80 mm (0.022 - 0.031 inch)
Oil Control (Steel Rails) 0.381 - 1.397 mm (0.015 - 0.055 inch)

Ring Side Clearance:
Compression Rings 0.040 - 0.085 mm (0.0016 - 0.0033 inch)
Oil Control (Steel Rails) 0.05 - 0.21 mm (0.002 - 0.008 inch)

Ring Width:
Compression Rings 1.530 - 1.555 mm (0.060 - 0.061 inch)
Oil Control (Steel Rails) - Max. 0.0447 - 0.0473 (0.018 - 0.019 inch)