Cylinder block
The diameter of the engine cylinders by class is as follows (in mm):
- A - 82.00-82.01
- B - 82.01-82.02
- C - 82.02-82.03
- D — 82,03—82,04
- E - 82.04-82.05
Also, as with 2108 engines, cylinder blocks during repair must be bored and honed for repair pistons (enlarged by 0.4 and 0.8 mm) taking into account the provision of a calculated clearance between the piston and the cylinder of 0.025–0.045 mm.
Connecting rod and piston group
Diameter of pistons of various classes, measured in a plane perpendicular to the axis of the pin at a distance of 51.5 mm from the piston crown (in mm):
- A - 81.965-81.975
- B - 81.975-81.985
- C - 81.985-81.995
- D — 81,995—82,005
- E - 82.005-82.015
When pressing the piston pin into the piston and connecting rod, instead of tool A.60325, use a similar tool designed for pistons with a diameter of 82 mm.
Cylinder head
The cylinder head of the 21083 engines differs from the 2108 in the increased intake valve diameters - 37 mm instead of 35 mm. Accordingly, the diameters of the inlet valve seats and the diameters of the inlet valves of the cylinder head are increased. Methods for checking, repairing and adjusting the cylinder head and valve mechanism of the 21083 engine do not have any features compared to the 2108 engine.
Cylinder head gasket - with increased cylinder bore diameters.
Supply system
The cold air intake is the same as on the VAZ-2109 car (see fig. 189).
Pic. 189. Air filter and thermostat VAZ-21083 and -2109: 1 - thermal air intake; 2 - cold air intake; 3 - air duct; 4 - thermostat; 5 - cover; 6 - cover gasket; Z - filter element; 8 - body; 9 - filter mounting plate; 10 - filter seal
The inlet pipeline has increased diameters of the channels, and the gas pipeline laying has increased diameters of the holes for the inlet channels.
Carburetor. Installed type 21083-1107010 with other calibration data (see table. 33). Its design is the same as that of the carburetor 2108-1107010.