Piston Ring: Specifications

Piston Ring Gap:
Top Upper Compression Ring:
Standard Value 0.23 - 0.52 mm (0.009 - 0.020 inch)
Limit 0.8 mm (0.031 inch)
Intermediate Compression Ring:
Standard Value 0.49 - 0.78 mm (0.019 - 0.031 inch)
Limit 1.0 mm (0.039 inch)
Oil Control (Steel Ring) Ring:
Standard Value 0.23 - 0.66 mm (0.009 - 0.026 inch)
Limit 1.0 mm (0.039 inch)
Piston Ring Side Clearance:
Top Upper And Intermediate Compression Ring:
Standard Value 0.025 - 0.065 mm (0.0010 - 0.0026 inch)
Limit 0.10 mm (0.004 inch)
Oil Control (Pack) Ring 0.004 - 0.178 mm (0.0002 - 0.0070 inch)
Piston Ring Width:
Top Upper and Intermediate:
Compression Ring 1.17 - 1.19 mm (0.046 - 0.047 inch)
Oil Control (Pack) Ring 0.004 - 0.178 mm (0.0002 - 0.0070 inch)