Notation
- 1.8 l - BZB, CDAA, CDAB
- 2.0 l - CCZA
The order of operation of cylinders 1-3-4-2
Cylinder diameter // piston stroke, mm
- 1.8 l - 82.5 // 84.2
- 2.0 l - 82.5 // 92.8
Volume of cylinders, cm3
- 1.8 l - 1798
- 2.0 l - 1984
Maximum power, kW (hp)
- BZB (at 5000-6200 rpm) — 118 (160)
- CDAA (at 4500-6200 rpm) — 118 (160)
- CDAB (at 4300-6200 rpm) — 112 (152)
- CCZA (at 5100-6000 rpm) — 147 (200)
Maximum torque, Nm
- BZB, CDAB (at 1500-4200 rpm) — 250
- CDAA (at 1500-4500 rpm) — 250
- CCZA (at 1700-5000 rpm) — 280
Compression ratio - 9.6:1
Compression pressure, bar
- New engine - 11-14
- Minimum allowable - 7
The maximum allowable spread of compression pressure in different cylinders, bar - 3
Engine oil pressure at which D/V is triggered, bar
- D/V "F378" low engine oil pressure (except "BZB", top) — 0.55 - 0.85
- D/V "F22" engine oil pressure (except "BZB", bottom) — 2.15 - 2.95
- D/V "F1 " engine oil pressure (only "BZB") — 1.2 - 1.6
Engine oil pressure at 80°С, bar
- At idle speed (checked for "F378") — 1.2 - 2.1
- At 2000 rpm (up to 1000 km of run, for "F378") allowed — 3.0 - 4.0
- At 2000 rpm (more than 1000 km of run, "F378") — 1.6 - 2.1
- At 2000 rpm (on "F1") — 2.7 - 4.5
- At 3700 rpm (on "F378") — 3.0 - 4.0
Engine oil pressure to open the engine pressure reducing valve "BZB", bar — no more than 7.0
Engine oil pressure to open the oil nozzle valve, bar - 1.6 - 1.9
The maximum allowable deviation from the flatness of the lower mating surface of the cylinder head, mm - 0.05
Axial backlash of camshafts, mm - 0.05 - 0.17
The maximum allowable runout of the camshaft, mm - 0.04
Inlet//outlet valve disc diameter, mm±0.10 — 33.85 // 28.0
Inlet//outlet valve stem diameter, mm±0.007 — 5.98 // 5.965
Inlet and outlet valve length, mm - 103.97 // 101.87
The angle of the working chamfer of the intake and exhaust valves - 45°
Backlash of the new valve in the corresponding guide bush (measured on the poppet when the end of the valve stem is flush with the end of the sleeve), mm — 0.8
Nominal piston // cylinder diameter, mm — 82.465 // 82.51
Maximum permissible deviation of the actual cylinder diameter1 from the nominal, mm - 0.08
Maximum permissible deviation of the actual piston diameter2 from the nominal, mm - 0.04
Clearances in the locks of new // used piston rings (the ring is inserted into the cylinder perpendicular to its axis at a distance of 15 mm from the lower edge of the cylinder), mm
- Compression rings - 0.20 - 0.40 // 0.8
- Oil scraper ring - 0.25 - 0.50 // 0.8
Fitting play of new // used piston rings in the piston grooves, mm
- Compression rings - 0.06 - 0.09 // 0.20
- Oil scraper ring - 0.03 - 0.06 // 0.15
Axial play of connecting rod bearings, mm
- New — 0.10 - 0.35
- Limit wear - 0.40
Nominal diameter of crankshaft journals, mm
- Indigenous — 58.00
- Connecting rod - 47.80
Axial backlash of a cranked shaft, mm
- New shaft - 0.07 - 0.23
- Wear limit - 0.30
Depth of pressing the needle bearing into the crankshaft, mm - 2.0
1 Measured at three cylinder depths (in the center and at a distance of 10 mm from the top and bottom edges), each time in two mutually perpendicular directions (total - 6 measurements).
2 Measured at a distance of 10 mm from the bottom edge of the piston skirt, perpendicular to the axis of the piston pin.