Most car owners love speed. But not all cars are able to satisfy such a desire. As a rule, there is only one reason - lack of power. Forcing an engine is a good way to eliminate it. Then the iron horse is able to turn into a thoroughbred horse, which will show the most enviable results. In addition, comfort will increase significantly, as well as driving pleasure will be increased several times.
Forcing the engine can be carried out in two ways: “brain flashing”, as well as “surgical intervention”. The first was called chip tuning. It simply changes the settings of the engine control unit. The fact is that the manufacturer selects the "golden mean", which allows you to develop average performance over the entire range of engine speeds and loads. Forcing the engine allows you to shift maximum performance closer to higher speeds. Thus, if earlier, for example, the maximum torque developed at 3000 rpm, then after flashing it will be developed, for example, about 5000. This is done in order to increase the acceleration dynamics, as well as the maximum speed.
But it should be remembered that such boosting the engine will lead to a serious loss of power “on the bottoms”, although if such measures are carried out, then, most likely, operation is not planned at low speeds.
The second method involves boring the cylinders for a larger volume, reducing the combustion chamber, installing lightweight parts, finalizing the manifolds, power and lubrication systems. Let's consider all this separately.
Forcing a VAZ engine should start from this, as they all have a rather small displacement. The increase in volume can be obtained by installing a crankshaft with a large knee, which will lead to a loss of revolutions. The increase in the diameter of the piston also cannot be infinite, since the block is completely cast from cast iron. In addition, the honing of the walls can be carried out only at a certain thickness, after removing this layer, the use of cylinders will be impossible.
The installation of lightweight parts has a positive effect on engine throttle response, because less energy is spent on their rotation and movement. In addition, the installation of lighter parts of the valve mechanism reduces the speed of its reaction to the gas distribution phase, which is useful for ventilation and the power system. The latter can also include the completion of the collectors, since it is the gases in the internal combustion engine that do all the work. Also, another air filter of higher performance is installed on the engine.
But, like all the improvements, there are drawbacks. For example, forcing the VAZ 2101 engine leads to a serious reduction in its service life. This is logical, because the large energy that is transmitted to the wheels wears out the piston group, which is the heart of the car. In addition, it is worth thinking about the clutch, since it is not designed for high engine performance, and with proper boost they can almost double.