Cylinder block and crankshaft assembly
WARNING: This page is about a different variant/trim than selected.
| Item | Description |
|---|---|
| 1 | Crankshaft upper bearing shell (1 required) Comments: Bearing shell with integral thrust washers (bearing no. 3) |
| 2 | Crankshaft upper bearing shell (1 required - bearing no. 1) |
| 3 | Crankshaft upper bearing shell (2 required - bearings no. 2 and 4) |
| 4 | Crankshaft bearing cap (quantity: 4) |
| 5 | Crankshaft lower bearing shell (1 required - bearing no. 1) |
| 6 | Crankshaft |
| 7 | Crankshaft lower bearing shell (3 required - bearings no. 2, 3 and 4) |
| 8 | Pistons (3 required) |
| 9 | Connecting rod (3 required) |
| 10 | Connecting rod upper bearing shell (3 required) |
| 11 | Connecting rod lower bearing shell (3 required) |
| 12 | Connecting rod bearing cap (3 required) |
The cylinder block is an 'open-deck' construction made of cast iron.
The engine code is stamped on the transmission flange on the exhaust side (arrow).
The side walls which are drawn down contribute to the rigidity of the cylinder block. These measures achieve a low weight as well as high rigidity.
The pistons are made of an aluminum-silicon alloy and are equipped with:
- an upper compression ring,
- a lower compression ring and
- a 3-part oil scraper ring (oil scraper ring as well as upper and lower tensioning spring elements).
The crankshaft runs in four bearings. The three crankshaft journals are at 120 degrees to one another.