11 25 Pistons with Rings and Pins N52 B25
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2008 BMW Z4, 2007 BMW Z4, 2007 BMW 530xi, 2007 BMW 530i, and 2007 BMW 525xi. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE - TECHNICAL DATA (11 25 PISTONS WITH RINGS AND PINS N52 B25)
| 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 | 0.15 |