Piston Ring, Engine

Top Groove Side Clearance 0.05-0.085 mm (0.002-0.0033 inch)
Second Groove Side Clearance 0.05-0.09 mm (0.002-0.0035 inch)
Top Ring Gap 0.15-0.36 (0.006-0.014 inch)
Second Ring Gap 0.5-0.71 mm (0.0197-0.0280 inch)
Groove Clearance 0.20 mm (0.008 inch)
Gap with segment at 92.0 mm 0.25-1.27 mm 90.0098-0.05 inch)