Piston Ring, Engine

Compression Groove Clearance 1st and 2nd: 0.033-0.079 mm (0.0013-0.0031 inches)
Gap (at gauge diameter) 1st: 0.20-0.45 mm (0.008-0.018 inches)
Gap (at gauge diameter) 2nd: 0.56-0.81 mm (0.022-0.032 inches)
Oil Groove Clearance: 0.028-0.206 mm (0.0011-0.0081 inches)
Gap (segment at gauge diameter): 0.25-0.76 mm (0.0098-0.0299 inches)
Tension 1st: 27.6 N (6.2 lbs.)
Tension 2nd: 19.8 N (4.5 lbs.)
Tension Oil: 31.2 N (7.0 lbs.)