Piston, Engine

Clearance in the Bore (42 mm from top of piston)
Compression Height 29.95-30.05 mm (11.179-1.183 inch)
Factory Specification (-) 0.014-0.022 mm ((-)0.00055-0.00087 inch)
Service Specification 0.026-0.078 mm (0.0010-0.0031 inch)
Piston Diameter at 70°F (21°C) (48 mm from top of piston)
Factory Specification 89.982-90.006 mm (3.5426-3.5435 inch)
Service Specification 89.926-89.966 mm (3.5404-3.5420 inch)
Piston Pin Bore ID at 70°F (21°C) 22.002-22.006 mm (0.8662-0.8664 inch)
Ring Groove Width, Oil 3.04-3.06 mm (0.1197-0.1205 inch)
Ring Groove Width, Second Compression 1.52-1.54 mm (0.0598-0.0606 inch)
Ring Groove Width, Top Compression 1.23-1.25 mm (0.048-0.049 inch)
Weight Less Pin and Rings 350 +/- 5 g (12.346 +/- 0.176 oz.)
Piston Rings
Compression Ring Gap, Second Ring 0.25-0.40 mm (0.0098-0.0157 inch)
Compression Ring Gap, Top 0.15-0.30 mm (0.006-0.012 inch)
Compression Ring Side Clearance In Groove, Second Ring 0.030-0.070 mm (0.0012-0.0028 inch)
Compression Ring Side Clearance in the Groove, Top Ring 0.040-0.080 mm (0.0016-0.0031 inch)
Compression Ring Width, Second Ring 1.470-1.490 mm (0.0579-0.0587 inch)
Compression Ring Width, Top Ring 1.170-1.190 mm (0.0461-0.0469 inch)
Oil Rail Width 0.385-0.440 mm (0.0151-0.0173 inch)
Oil Ring Gap 0.25-0.76 mm (0.0098-0.0299 inch)
Oil Ring Width (Ring Package) 2.827-3.014 mm (0.1113-0.1187 inch)