Piston Ring Side Clearance
WARNING: This page is about a different car, the 2015 RAM 3500 HD and 2015 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Make sure the piston ring grooves are clean and free of nicks and burrs.
- Measure the ring side clearance as shown in illustration make sure the feeler gauge (1) fits snugly between the ring land and the ring. Replace any ring not within specification. Refer to SPECIFICATIONS .
- Rotate the ring around the piston, the ring must rotate in the groove with out binding.
PISTON RING SPECIFICATION CHART
| Piston Ring Position | Piston Ring Side Clearance | Maximum Clearance |
|---|---|---|
| Upper Ring | ||
| Metric | 0.04 - 0.09 mm | 0.11 mm |
| Standard | 0.001 - 0.003 in. | 0.004 in. |
| Intermediate Ring | ||
| Metric | 0.04 - 0.08 mm | 0.10 mm |
| Standard | 0.001 - 0.003 in. | 0.004 in. |
| Piston Ring Position | Piston Ring End Gap | Wear Limit |
| Upper Ring | ||
| Metric | 0.40 - 0.55 mm | 0.43 mm |
| Standard | 0.015 - 0.021 in. | 0.017 in. |
| Intermediate Ring | ||
| Metric | 0.24 - 0.51 mm | 0.74 mm |
| Standard | 0.009 - 0.020 in. | 0.029 in. |
| Oil Control Ring (Steel Rail) | ||
| Metric | 0.015 - 0.66 mm | 0.76 mm |
| Standard | 0.005 - 0.025 in. | 0.030 in. |