Piston Ring, Engine

DIMENSIONS
Ring End Gap
Top:
Standard (New) 0.25-0.40 mm (0.010-0.016 inch)
Service Limit 0.70 mm (0.28 inch)
Second:
Standard (New) 0.40-0.70 mm (0.016-0.022 inch)
Service Limit 0.85 mm (0.033 inch)
Oil:
Standard (New) [1] 0.20-0.70 mm (0.008-0.028 inch)
Service Limit [1] 0.80 mm (0.031 inch)
Standard (New) [2] 0.20-0.50 mm (0.008-0.020 inch)
Service Limit [2] 0.80 mm (0.031 inch)
Ring-To-Groove Clearance
Top:
Standard (New) 0.055-0.080 mm (0.0022-0.0031 inch)
Service Limit 0.13 mm (0.005 inch)
Second:
Standard (New) 0.030-0.055 mm (0.0012-0.0022 inch)
Service Limit 0.13 mm (0.005 inch)

[1] Riken manufactured piston ring
[2] Teikoku Piston Ring manufactured piston ring