Section 256 (Engine - 6.7L Power Stroke Diesel): Specifications: Rings
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Item | Specification |
|---|---|
| Piston ring end gap - top compression | 0.010 -0.016 in (.25 -.4 mm) |
| Piston ring end gap - intermediate compression | 0.016 -0.024 in (.4 -.6 mm) |
| Piston ring end gap - oil control | 0.010 -0.020 in (.25 -.5 mm) |
| Top piston ring groove width (measured over 2.685 mm (0.105 in) gauge pins) - upper limit | 3.881 -3.886 in (98.566 -98.713 mm) |
| Piston ring-to-groove clearance - intermediate | 0.003 in (.065 mm) |
| Piston ring-to-groove clearance -- oil control ring | 0.001 in (.03 mm) |