Longitudinal and transverse section of the engine
Engine mount
1 – support casing; 2 – Front engine mount support; 3 – cylinder block flange; 4 – bracket; 5 – intermediate plate; 6 – insulating plastic ring; 7 – support spring; 8 – buffer; 9 – support cushion; 10 – washer; 11 – rear engine mount support; 12 – spacer sleeve; 13 – rear engine mount cross member
The cars are equipped with a 4-cylinder carburetor engine with in-line vertical cylinder arrangement and overhead camshaft (see Fig. Longitudinal and transverse section of the engine). Depending on the model or modification of the car, three types of engines can be installed:
- 2101 – with a working volume of 1.2 liters. This is the engine of VAZ-2101 cars;
- 21011 – with a working volume of 1.3 l. The main engine for VAZ-21011 cars. It differs from the 2101 engines by an increased cylinder diameter of 79 mm, therefore it has a different cylinder block, cylinder head gasket and pistons with piston rings;
- 2103 – with a working volume of 1.45 l. It is used on VAZ-21023 cars. It differs from 2101 engines by a piston stroke increased by 14 mm. Therefore, it has a different crankshaft and other parts of the timing chain drive. In addition, it is equipped with a carburetor with different calibration data, designed for engines with a working volume of 1.45 l.
This section describes the repair of the 2101 engine. The features of the repair of the 21011 and 2103 engines are described in subsection 13.1.2.1 and subsection 13.4.
The engine assembly with the clutch and gearbox is mounted on the vehicle on three elastic supports (see Fig. Engine mount). The supports take both the engine weight and the loads arising from engine vibration, from the engine inertia when the car starts moving, accelerates and brakes. The engine is attached to the car's front suspension crossmember by two front supports, and to the rear engine suspension crossmember by the rear supports.