Designations - ВХЭ, BLS
The order of operation of the cylinders is 1-3-4-2
Cylinder diameter // piston stroke, mm 79.5 // 95.5
Volume of cylinders, cm3 — 1896
Maximum power, kW (hp) at 4000 rpm - 77 (105)
Maximum torque, Nm at 1900 rpm - 250
Compression ratio - 18.5:1
Compression pressure, bar
- New engine - 25-31
- Minimum allowable - 19
The maximum allowable spread of compression pressure in different cylinders, bar - 5
Engine oil pressure at which D / V is activated, bar - 0.55 - 0.85
Engine oil pressure at 80°С, bar
- At idle speed not less than - 0.8
- At 2000 rpm, not less than - 2.0
Engine oil pressure to open the pressure reducing valve, bar - 7.0
Engine oil pressure to open the oil nozzle valve, bar - 2.5 - 3.2
The maximum allowable deviation from the flatness of the lower mating surface of the cylinder head, mm - 0.1
The maximum allowable runout of the camshaft, mm - 0.04
The maximum allowable radial play of the camshaft is 0.11
The maximum allowable axial play of the camshaft is 0.15
- Inlet//outlet valve disc diameter, mm — 35.95 // 31.45
- Inlet//outlet valve stem diameter, mm — 6.980 // 6.965
- Inlet and outlet valve length, mm - 89.45 // 89.05
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 - 1.3
Minimum allowable distance from the end of the valve stem to the plane of the cylinder head (controlled when machining the valve seat), mm
- Inlet valve - 43.4
- Exhaust valve - 43.2
3 Inlet/Valve Seat Machining Dimensions (values are given for 1.9 l engines), mm
Nominal piston // cylinder diameter, mm — 79.47 //79.51
Maximum permissible deviation of the actual cylinder diameter1 from the nominal, mm - 0.10
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 // 1.0
- Oil scraper ring - 0.25 - 0.50 // 1.0
Fitting play of new // used piston rings in the piston grooves, mm
- Top compression ring - 0.06 - 0.09 // 0.25
- Lower compression ring - 0.05 - 0.08 // 0.25
- Oil scraper ring - 0.03 - 0.06 // 0.15
The maximum allowable axial play of connecting rod bearings, mm - 0.37
Nominal diameter of crankshaft journals, mm
- Root - 54.00
- Connecting rod - 47.80
Axial backlash of a cranked shaft, mm
- New shaft - 0.07 - 0.17
- Wear limit - 0.37
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.