Piston Ring, Engine

Piston Ring - Compression
Thickness 1.5 mm (0.0590 inch)
Ring Groove Clearance 0.02-0.04 mm (0.0008-0.0015 inch)
Ring Gap 0.30-0.50 mm (0.0118-0.0196 inch)
Piston Ring - Oil
Thickness 3.0 mm (0.1181 inch)
Ring Groove Clearance 0.01-0.03 mm (0.0004-0.0012 inch)
Ring Gap 0.40-1.40 mm (0.0157-0.0551 inch)
Piston Pin
Diameter 21 mm (0.8267 inch)
Clearance in Piston 0.001-0.015 mm (0.0001-0.0003 inch)