Piston Dimensions & Clearances

DIMENSIONS
Piston Diameter:
Standard 79.48 mm (3.1315 inch)
1st Oversize 79.72 mm (3.1410 inch)
2nd Oversize 79.98 mm (3.1512 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)