Piston, Engine

DIMENSIONS
Piston Diameter:
Standard:
Piston Size 79.48 mm (3.1291 inch)
Bore Size 79.51 mm (3.1303 inch)
1st Oversize:
Piston Size 79.73 mm (3.1390 inch)
Bore Size 79.76 mm (3.1402 inch)
2nd Oversize:
Piston Size 79.98 mm (3.1488 inch)
Bore Size 80.01 mm (3.1500 inch)
Deviation from Cylinder Bore Dimension:
Maximum 0.10 mm (0.0039 inch)

Piston Ring Groove Clearance:
New:
1st Compression Ring 0.06-0.09 (0.0024-0.0036 inch)
2nd Compression Ring 0.05-0.08 (0.0020-0.0032 inch)
Oil Scraper Ring 0.03-0.06 (0.0012-0.0024 inch)
Wear Limit:
1st Compression Ring 0.25 (0.0098 inch)
2nd Compression Ring 0.25 (0.0098 inch)
Oil Scraper Ring 0.15 (0.0059 inch)