Depending on the model or modification of the car, engines of the following models can be installed:
- 2105 - with a working volume of 1.3 liters and a camshaft belt drive. This is the main engine for VAZ-2105 and VAZ-2104 cars;
- 2101 - with a working volume of 1.2 liters and a camshaft chain drive. Like all other chain driven engines, it differs from the 2105 engine in the design of the block front and cylinder head and pistons. In addition, it has a smaller cylinder diameter (76 mm);
- 2103 - with a working volume of 1.5 liters and a camshaft chain drive. Compared to the 2101 engine, it has an increased piston stroke of up to 80 mm and therefore a higher height of the cylinder block and a different crankshaft. In connection with a different working volume of the cylinders, a carburetor with other calibration data is installed;
- 2106 - with a working volume of 1.6 liters and a camshaft chain drive. It differs from the 2103 engines by an increased cylinder diameter of up to 79 mm. Therefore, it has a different cylinder block and pistons with piston rings.
The dimensions of the main mating parts of the engine and the limits of permissible wear in operation are given in Table. 1.
* In the numerator - for engines 2103, 2101, and in the denominator - for 2105.
** A lubricated piston pin should not fall out of its bosses if worn vertically in the piston.
*** With acceptable wear, finger slippage under a load of 400 kgf is not allowed.