Piston Ring End Gap
WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.
- Check if inner diameter of cylinder bore is within specification. Refer to "PISTON-TO-CYLINDER BORE CLEARANCE ".
- Insert piston ring until it is in the middle of the cylinder bore and measure the end gap.
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 out of specification, replace piston ring. If gap still exceeds the limit even with a new ring, re-bore cylinder and use oversized piston and piston ring.