Carter
Engine blocks without injection and with turbocharging differ from each other. Turbocharged engine blocks have jets that cool the oil at the bottom of the pistons. The crankcases are made as castings with cylinders machined directly into the casting material. The distance between the cylinder centers is 88 mm, which allows for 11.5 mm thick walls between adjacent cylinder faces. In these engines, the cylinder block does not have bearing holes for the camshaft, which is located in the cylinder head.
Cylinder diameter (tolerance +0.04 mm)
| Size | Designation | Cylinder diameter (mm) |
| nominal | 651 652 653 | 76,51 76,52 76,53 |
| 1st repair | 676 677 678 | 76,76 76,77 76,78 |
| 2nd repair | 701 702 703 | 77,01 77,02 77,03 |
| 3rd repair | 751 752 753 | 77,51 77,52 77,53 |
Crankshaft
| Number of main necks: | 7 |
| Neck diameter: | 57.958 - 57.973 mm. |
| Repair dimensions: Length of main necks: | -0.25, -0.50, -0.75 mm. |
| - middle neck: | 22.5 mm. max. 23.0 mm |
| - other necks: | 21.5 mm. max. 22.0 mm |
| Diameter of crank pins | 47.758 - 47.778 mm |
| Repair dimensions: | -0.25, -0.50, -0.75 mm |
| Length of crank journals: Fillet radius: | 24.6 mm. max. 25.0 mm |
| - main journals | 1.0 mm. max 1.5 mm |
| - connecting rod journals | 2.0 mm. max 2.5 mm |
| Main journal diametrical clearance: | 0.016 - 0.075 mm. max 0.160 mm |
| Lateral clearance: | 0.07 - 0.18 mm, max. 0.25 mm |
Connecting rods
Connecting rods with a straight head connector are used. Installation method: protrusions at the bottom towards the front of the engine. Distance between axles: 136±0.05 mm.
Weight tolerance: 6g Diameter gap: max.0.40 mm.
Pistons
Installation method: combustion chambers on the side opposite the starter and oil filter. The pistons of non-injected engines are different from the pistons of turbocharged engines.
Piston diameter (tolerance ±0.04 mm)
| Size | Designation | Cylinder diameter (mm) |
| nominal | 651 | 76,48 |
| 652 | 76,49 | |
| 653 | 76,50 | |
| 1st repair | 676 | 76,73 |
| 677 | 76,74 | |
| 678 | 76,75 | |
| 2nd repair | 701 | 76,96 |
| 702 | 76,99 | |
| 703 | 77,00 | |
| 3rd repair | 751 | 77,48 |
| 752 | 77,49 | |
| 753 | 77,50 |
| Mounting gap: | 0.03 - 0.05 mm, max. 0.13 mm |
| Overall height: | 71.7±0.05 mm |
| Finger length: | 41.7±0.05 mm |
| Finger weight: | 455 - 465 g |
Piston extension as a function of head gasket thickness determined by the number of slots
| Number of slots on the head gasket | Piston extension (mm) |
| 1 | 0,67 - 0,80 |
| 2 | 0,81 - 0,90 |
| 3 | 0,91 - 1,02 |
Piston rings
Quantity: 1 - fire retardant; 1 - compression; 1 - oil drainage.
Height:
- fire protection ring: 1.73 - 1.74 mm.
- compression ring: 1.98 - 1.99 mm.
- oil drain ring: 2.975 - 2.990 mm.
Clearance in grooves:
- fire protection ring: 0.06 - 0.09 mm, max. 0.20 mm.
- compression ring: 0.05 - 0.08 mm, max. 0.20 mm.
- oil drain ring: 0.03 - 0.06 mm, max. 0.15 mm.
Gap on the cut:
- fire protection ring and compression: 0.30 - 0.50 mm
- oil drain ring: 0.25 - 0.40 mm, max for all: 1.00 mm.
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