
| Pos. | Spare part number | Name |
| A | - | Front of the engine |
| 1 | - | Expansion chamber opening |
| 2 | - | Coolant chamber |
| 3 | - | Oil supply hole to main bearings |
| 4 | - | Oil filter housing |
| 5 | - | Double layer wall (shaded areas) |
| 6 | - | Oil supply port to main bearings |
| 7 | - | Oil nozzle installation port |
| 8 | - | Installation location of the special tool for adjusting the ignition timing |
| 9 | - | Main Oil Gallery |
| 10 | - | Oil supply hole to the cylinder head |
| 11 | - | VGT Oil Return Port |
| 12 | - | VGT Oil Feed Port |
The cylinder block is made of cast iron and has two-layer walls, providing high mechanical strength and rigidity. An air cushion is formed between the layers, which also helps improve the NVH characteristics of the running engine. The block has 5 main journals with bolt fastening, which also provide high mechanical strength and rigidity of the lower part of the engine.
The cylinders are bored directly in the cylinder block, no cylinder liners are required. Two guide bushings are located on the cylinder block, they are provided for the correct alignment of the cylinder head and gasket relative to the cylinder block.
The hole in the left rear of the cylinder block, under the starter, is used to install a special tool for adjusting the ignition timing. The special tool is inserted into the corresponding hole in the flywheel to temporarily hold the crankshaft in a position in which cylinder No.1 is at top dead center (TDC).
The oil filter housing, oil cooler and main oil gallery are located on the left side of the cylinder block. The main oil gallery is drilled longitudinally along the cylinder block and supplies pressurized oil to all moving parts of the engine. Pressurized oil is diverted from the main oil gallery to supply the main and connecting rod bearings through diagonally drilled holes in the cylinder block and in the crankshaft journals. The main oil gallery is sealed at each end with threaded plugs.
A cross passage drilled above the No.2 main bearing directs pressurized oil from the main oil gallery to a port on the right side of the cylinder block. This port supplies pressurized oil through a banjo nipple connection to the VGT bearings. Return oil from the VGT is fed through a pipe and port on the right side of the block to the oil sump. A vertical passage drilled in the left front of the cylinder block supplies pressurized oil from the main oil gallery to the corresponding oil gallery in the cylinder head.
Engine cooling is provided by intercylinder coolant chambers and drilled expansion chambers provided in the cooling jacket of the cylinder block. The coolant chambers supply coolant through openings on the upper surface of the block to the cylinder head. Rod plugs seal the outer openings provided in the cooling jacket of the cylinder block.
Comments on this article