Camshaft
The camshafts of the DV 1G and DW 1S models, as well as the other three engines, differ from each other.
| Number of bearings: | 4 |
| Neck diameter: - anterior neck: | 31.925 - 31.950 mm |
| - other necks: | 29.939 - 29.960 mm |
| Diametrical clearance: | 0.05 - 0.10 mm |
| Lateral clearance: | max 0.15 mm |
| Lift of valve cams: - inlet valve: | 8.5 mm |
| - exhaust valve: | 9.0 mm |
Distribution phase drawing
When lifting the valves by 1 mm (for all engines).
Engines CP, DV, DW
Figure 2.3. Distribution phase diagram (engines CP, DV, DW).
| Parameter | Degree on a circle | Millimeters on the piston |
| OZD | 5 | 0,12 |
| ZZD | 21 | — |
| OZW | 27 | — |
| ZZW | 5 | 0,12 |
Motors DV 1 G and DW 1 S
Figure 2.4. Distribution phase diagram (motors DV 1 G and DW 1 S).
| Parameter | Degree on a circle | Millimeters on the piston |
| OZD | 6 | 0,34 |
| ZZD | 20 | — |
| OZW | 25°30' | — |
| ZZW | 6°30' | 0,36 |
Pushers
The pushers move in the holes in the head.
The DV 1 G and DW 1 S engines are equipped with tappets with hydraulic valve clearance relief.
| Valve clearances for a warm engine: — intake valves: | 0.20 - 0.30 mm |
| — exhaust valves: | 0.40 - 0.50 mm |
| Valve clearances for a cold engine: — intake valves: | 0.15 - 0.25 mm |
| — exhaust valves: | 0.35 - 0.45 mm |
| Height: | 23.0 - 28.8 mm |
| Diameter: | 34.950 - 34.975 mm |
| Mounting gap: | 0.025 - 0.075 mm |
| Gasket thickness: | 3.00 - 4.25 mm every 0.05 mm |
| Clearance of adjusting shims in tappets: | 0.016 - 0.046 mm |
Valves
The valves of the DV 1 G and DW 1 S engines differ from the valves of the other engines.
| Overall length: - engines DV 1 G and DW 1 S: | 95 mm |
| - other engines: intake valves: | 104.8 mm |
| exhaust valves: | 104.5 mm |
| Plate diameter: — intake valves: | 35 mm |
| — exhaust valves: | 31 mm |
| Grinding angle: | 45° |
| Rod diameter: — intake valves: | 7.97 mm |
| — exhaust valves: | 7.95 mm |
| Clearance in guides: (see section 2.2 "Maintenance and repair"): | 0.30 mm max. 1.30 mm |
| Recess for inlet and outlet valves | max 1.5 mm |
Valve springs
There are two springs per valve, and the valve springs of the DV 1 G and DW 1 S engines and the other engines differ from each other.
Motors DV 1 G and DW 1 S
Designations: blue color
| Free length: -inner spring: | 32.5 mm |
| -external spring: | 37.0 mm |
Other engines
| Free length: - external spring: | 40.2 mm |
| - internal spring: | 33.9 mm |
| Length under load: - external spring: | 22.32 mm/430 - 480 H |
| - inner squad: | 18.3 mm/210 - 230 N |
Visitor comments