Designation - SAHS
The firing order of the cylinders is 1-3-4-2
Cylinder diameter // piston stroke, mm — 76.5 // 75.6
Cylinder capacity, cm³ — 1390
Maximum power, kW (hp) at 5000 rpm — 92 (125)
Maximum torque, Nm at 1500-4000 rpm - 200
Compression ratio - 10.0:1
Compression pressure, bar
- New engine - 10-15
- Minimum acceptable - 7
Maximum permissible variation in compression pressure in different cylinders, bar — 3
Engine oil pressure at which the D/V operates, bar — 0.3 - 0.7
Engine oil pressure at 80°C and 2000 rpm, bar — not less than 2.0
Engine oil pressure for opening the pressure reducing valve, bar - no more than 7.0
Maximum permissible deviation from flatness of the lower mating surface of the cylinder head (processing is not allowed), mm - 0.05
Minimum permissible cylinder head height, mm — 108.25
Minimum permissible distance from the end of the valve stem to the plane of the cylinder head (controlled during valve seat processing), mm - 7.6
Maximum permissible axial clearance of the camshaft (with the camshaft housing removed and the end cover installed), mm - 0.4
Inlet/outlet valve plate diameter, mm — 29.5 // 26.0
Inlet//outlet valve stem diameter, mm — 5.973 // 5.953
Length of inlet//outlet valve, mm — 100.9 // 100.5
The angle of the working chamfer of the inlet and outlet valve is 45°
1 Dimensions for machining the inlet/outlet valve seat (values are given for a 1.4L engine), mm
a Diameter 28.7 // 25.0
b Maximum allowable processing size (the difference between the current and minimum permissible distance from the end of the valve stem to the upper plane of the cylinder head, see above)
from 1.5-1.8 // about 1.8
Z Lower surface of cylinder head
α Valve seat angle (45°)
β Upper correction angle (30°)
γ Lower correction angle (60°)
Play of the new intake and exhaust valve in the corresponding guide bushing (when measured, the end of the valve stem is flush with the end of the sleeve), mm - 0.8
Nominal piston diameter, mm — 76.46
Maximum permissible deviation of the actual cylinder diameter¹ from nominal, mm — 0.08
Maximum permissible deviation of the actual piston diameter² from 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
- 1st compression ring 0.20 - 0.40 // 1.0
- 2nd compression ring 0.40 - 0.60 // 1.0
Oil scraper ring 0.20 - 0.80 // no data
Clearance of new/used piston rings in piston grooves, mm
- 1st compression ring 0.04 - 0.08 // 0.15
- 2nd compression ring 0.02 - 0.06 // 0.15
Oil scraper ring - Not measured
Nominal diameter of the main // connecting rod journal of the crankshaft, mm — 54.00 // 47.80
Crankshaft axial clearance, mm
- New shaft - 0.07 - 0.24
- Wear limit - 0.26
¹ Measured at three cylinder depths (in the center and at a distance of 10 mm from the upper and lower edges), each time - in two mutually perpendicular directions (total - 6 dimensions).
² Measured at a distance of 12 mm from the lower edge of the piston skirt perpendicular to the axis of the piston pin.