Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

Piston
Ring groove width
Top
Standard or New 1.040 - 1.050 mm (0.409 - 0.0413 inch)
Service Limit 1.07 mm (0.042 inch)
Second
Standard or New 1.220 - 1.230 mm (0.0480 - 0.0484 inch)
Service Limit 1.25 mm (0.049 inch)
Oil
Standard or New 2.005 - 2.020 mm (0.0789 - 0.0795 inch)
Service Limit 2.04 mm (0.080 inch)
Piston rings
Ring-to-groove clearance
Top
Standard or New 0.055 - 0.080 mm (0.0022 - 0.0031 inch)
Service Limit 0.15 mm (0.006 inch)
Second
Standard or New 0.030 - 0.05 mm (0.0012 - 0.0022 inch)
Service Limit 0.13 mm (0.005 inch)
Ring end gap
Top
Standard or New 0.15 - 0.30 mm (0.006 - 0.012 inch)
Service Limit 0.50 mm (0.020 inch)
Second
Standard or New 0.35 - 0.50 mm (0.014 - 0.020 inch)
Service Limit 0.70 mm (0.028 inch)
Oil
Standard or New 0.20 - 0.70 mm (0.008 - 0.028 inch)
Service Limit 0.80 mm (0.031 inch)