Piston Ring, Engine

Piston Ring End-Gap:
Top Ring
Standard (New) 0.15-0.30 mm (0.006-0.012 inch)
Service Limit 0.60 mm (0.024 inch)
Second Ring
Standard (New) 0.30-0.45mm (0.012-0.018 inch)
Service Limit 0.70 mm (0.028 inch)
Oil Ring
Standard (New) 0.20-0.70 mm (0.008-0.028 inch)
Service Limit 0.80 mm (0.031 inch)
Ring-To-Groove Clearance:
Top Ring Clearance
Standard (New) 0.035-0.060 mm (0.0014-0.0024 inch)
Service Limit 0.13 mm (0.005 inch)
Second Ring Clearance
Standard (New) 0.030-0.055 mm (0.0012-0.0022 inch)
Service Limit 0.13 mm (0.005 inch)