11 25 Pistons with Rings and Pins N52K B25
WARNING: This page is about a different car, the 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
PISTONS WITH RINGS AND PINS SPECIFICATION
| Piston and pin are paired to each other - replace together only. | ||
| Measuring point "A" (position) | mm | 10 |
| Piston diameter at measuring point "A" | ||
| Original (new dimension) | mm | 81.985±0.014 |
| Repair stage (new dimension) | mm | % |
| Oversize (new dimension) | mm | 82.235±0.014 |
| Piston installation clearance (piston new) | mm | 0.000...0.043 |
| Piston installation clearance (piston worn) | mm | 0.020...0.047 |
| Permissible total wear tolerance between piston and cylinder (engine operated) |
mm | 0.150 |