Piston Ring End Gap
WARNING: This page is about a different car, the 2004 Nissan Murano and 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
- Make sure that cylinder bore inner diameter is within specification. Refer to CYLINDER BORE INNER DIAMETER .
- Lubricate with new engine oil to piston and piston ring, and then insert piston ring until middle of cylinder with piston, and measure piston ring end gap with feeler gauge.
Standard:
Top ring: 0.23 - 0.33 mm (0.0091 - 0.0130 in)
2nd ring: 0.33 - 0.48 mm (0.0130 - 0.0189 in)
Oil ring: 0.20 - 0.50 mm (0.0079 - 0.0197 in)
Limit:
Top ring: 0.54 mm (0.0213 in)
2nd ring: 0.80 mm (0.0315 in)
Oil ring: 0.95 mm (0.0374 in)
- If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit, re-bore cylinder and use oversize piston and piston rings.