Operation CHARM: Car repair manuals for everyone.

Piston Ring, Engine

Piston Rings

Top and 2nd ring grooves 1.2 mm (0.05 in.) wide
Oil ring groove 2.8 mm (0.11 in.) wide.

Piston Ring End-Gap

Top Ring:
Standard (New) 0.20 - 0.35 mm (0.008 - 0.014 in.)
Service Limit 0.60 mm (0.024 in.)

Second Ring:
Standard (New) 0.40 - 0.55 mm (0.016 - 0.022 in.)
Service Limit 0.70 mm (0.028 in.)

Oil Ring:
Standard (New) 0.20 - 0.70 mm (0.008 - 0.028 in.)
Service Limit 0.80 mm (0.031 in.)