Piston Ring
WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
| Closed gap | mm (in) | Compression ring | Top ring | Standard | 0.22 - 0.27 (0.0087 - 0.0106) | |||
| Second ring | Standard | 0.35 - 0.45 (0.0138 - 0.0177) | ||||||
| Oil ring (Upper rail and lower rail) |
Standard | 0.10 - 0.35 (0.0039 - 0.0138) | ||||||
| Clearance between compression ring and piston | mm (in) | Top ring | Standard | 0.040 - 0.080 (0.0016 - 0.0031) | ||||
| Second ring | Standard | 0.045 - 0.085 (0.0018 - 0.0034) | ||||||