End Gap

1. Using a piston, push a new ring into the cylinder bore 15-20 mm (0.6-0.8 inch) from the bottom.
2. Measure the piston ring end-gap with a feeler gauge:
- If the gap is too small, check to see if you have the proper rings for your engine.
- If the gap is too large, recheck the cylinder bore diameter against the wear limits. If the bore is over the service limit, the cylinder block must be rebored.
Piston Ring End-Gap:
- Top Ring
Standard (New): 0.20-0.35 mm (0.008-0.014 inch)
Service Limit: 0.60 mm (0.024 inch)
- Second Ring
Standard (New): 0.40-0.55 mm (0.016-0.022 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)