Duratec

Piston Ring Gaps (Installed)
Upper Compression Ring 0.300-0.500 mm
Lower Compression Ring 0.300-0.500 mm
Oil Scraper Ring 0.400-1.400 mm
Piston Clearance In Cylinder Bore 0.010-0.030 mm

NOTE: Ring gap oosition: The piston ring gaps must be distributed evenly around the circumference of the piston. This also applies to the oil scraper ring elements. Align the ring gaps at 120 degrees to each other.