Piston Ring, Engine

Ring Gap-Top Compression Ring 0.25-0.51 mm (0.0098-0.020 in.)
Wear Limit 0.8 mm (0.031 in.)
Ring Gap-2nd Compression Ring 0.23-0.48 mm (0.009-0.018 in.)
Wear Limit 0.8 mm (0.031 in.)
Ring Gap-Oil Control Steel Rails 0.25-0.64 mm (0.0098-0.025 in.)
Wear Limit 1.0 mm (0.039 in.)
Ring Side Clearance-Compression Rings 0.030-0.080 mm (0.0011-0.0031 in.)
Wear Limit 0.10 mm (0.004 in.)
Ring Side Clearance-oil Ring Pack 0.012-0.178 mm (0.0004-0.0070 in.)
Ring Width-Compression Rings 1.47-1.50 mm (0.057-0.059 in.)
Ring Width-Oil Ring Pack 2.72-2.88 mm (0.107-0.1133 in.)
Piston Ring Groove Depth No. 1 4.640-4.784 mm (0.182-0.188 in.)
Piston Ring Groove Depth No. 2 4.575-4.719 mm (0.180-0.185 in.)
Piston Ring Groove Depth No. 3 4.097-4.236 mm (0.161-0.166 in.)