11 25 Pistons, Rings, and Pins
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2019 MINI Cooper, 2018 MINI Cooper, 2017 MINI Cooper, 2016 MINI Cooper, and 2015 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.
PISTONS WITH RINGS AND PINS SPECIFICATION (1 OF 2)
| Piston and pin are paired to each other -replace together only. | ||
| Piston diameter at measuring point "A" | mm | |
| Original (new dimension) | mm | 81.978... 82.016 |
| Repair stage (new dimension) | mm | |
| Oversize (new dimension) | mm | |
| Piston installation clearance (piston new) | mm | 0.03...0.17 |
| Piston installation clearance (piston worn) | mm | 0.2...0.20 |
| Permissible total wear tolerance between piston and cylinder (engine operated) | mm | 0.25 |
PISTONS WITH RINGS AND PINS SPECIFICATION (2 OF 2)
| 1st groove | ||
| End clearance | mm | 0.15...0.25 |
| Side clearance | mm | 0.07...0.11 |
| 2nd groove | ||
| End clearance | mm | 0.30... 0.45 |
| Side clearance | mm | 0.07... 0.11 |
| 3rd groove | ||
| End clearance | mm | can't be measured |
| Side clearance | mm | can't be measured |
PISTONS WITH RINGS AND PINS SPECIFICATION