Sport exhaust system on various car models

The exhaust system in cars is necessary for the release of combustion products from the engine cylinders. The standard design consists of catalytic converters, exhaust manifold and silencer. If you understand, the principle of the exhaust system is quite simple. Understand the scheme of work will be able to even people who are far from automotive subjects. The main thing is the task that this system solves. It is designed to clean engine cylinders from exhaust gases.

These exhaust tracts are installed on most cars, and they do their job well. But fans of speed and power are constantly tuning their cars. And any refinement always begins with the modernization of the release system. And the first thing that changes is the exhaust. Often a completely civilian car is fitted with a sport exhaust system. Let's see how the sports version differs from the civil version, and also learn the pros and cons of such tuning.

The direct-flow exhaust: what is it?

When the exhaust valve opens, a small amount of exhaust gas is gradually supplied to the collector. If the car's engine is diesel, then they first activate the turbocharger, and then go into the pipe. From the latter they are sent to the atmosphere.

In the case of gasoline engines, after the gases pass the collector, they immediately go to the intake pipe. Then they go further according to the scheme. But it works with a standard exhaust. With the alternative everything is a little different. The sports exhaust system has a different structure. After combustion of the combustible mixture in the engine cylinders waste materials are formed. To remove them, this system is designed.

The removal of gases is necessary in order to make room for a new portion of the mixture. The process is possible due to the fact that the piston moves in the combustion chamber and extrudes the combustion products through a special valve. The latter is located at the end of the cylinder. But on the other hand, a sparse environment is possible. In order to avoid this problem, many install a direct-flow exhaust. Although it is nothing more than a sport exhaust system.

Why do we need thinning?

The answer to this question is very simple. Due to sparseness, the gases that remain in the combustion chamber can leave the cylinder faster. They are pushed into the atmosphere. Gases literally stretch out of the cylinder. Due to rarefaction, the combustion chamber is better cleaned, and also qualitatively prepared for a new portion of the fuel mixture. Newcomers in car tuning may have a question, where does this sparseness come from. The law of inertia of gases works here. After the pressure in the exhaust pipe increases, a certain dilute front is formed. If the pipe has bends or there are other elements in it which can impede the free escape of gases, they are very reluctant to leave the engine. This reduces the filling ratio of the cylinders. At the same time, the engine's power drops.

In a co-current exhaust system, there are no significant barriers to free gas escape. The system is designed in such a way that nothing prevents or seals the outgoing gases. In addition, tuning enthusiasts often increase the diameter of the metal tube. This is done in order to accelerate the level of movement of gases.

Typical device of a sports exhaust system

The standard design of the direct-flow exhaust includes a manifold that can be replaced by a receiving pipe. The latter can be branched according to the number of cylinders. Also on modern cars, a catalyst is installed. It exhausts the exhaust gases . Then a resonator is installed. It is necessary for the primary reduction of noise. Then, through a small piece of pipe, the exhaust system ends with a silencer. This element is often improved by means of various sensors. In addition, on its way you can find soot filters.

Why do the tuning of the exhaust system?

The manufacturer installs on his cars a huge amount of parts that prevent the free cleaning of the combustion chambers and the exit of the combustion products. Often, owners can face problems associated with compression.

It is also necessary to know that the sports exhaust system is not equipped with a particulate filter. And the resonator has a reduced level of resistance. But this problem is correctable. To do this, simply replace the exhaust manifold.

The scheme

The collector circuit depends on the length of the system. So, a shorter device will be built in a two-tier type. The longer will be three-tiered. The first system is most suitable for forced engines. So he can get power or extra speed. The second scheme is ideal for civil city cars. So the sports exhaust systems VAZ 2110-2114 are arranged.

But it is important to remember that even small changes made to the design of the exhaust system require careful tuning of the work of the intake tract and engine power system.

About the resonator

In order to obtain the maximum output from the combustion chambers of the engine, it is necessary to install a resonator where the exhaust gas pressure will be the lowest. On this site, the reflectors extend the speed of the gases.

This improves the purging of the combustion chambers. This allows you to get higher engine speed. A silencer should be installed as far as possible from the resonator. This is necessary so that both devices can not affect the rarefaction in the exhaust system.

Advantages of sport exhaust systems

Before you go and buy a sports exhaust system (1118 "Kalina" including), you need to get acquainted with the pros and cons of such a replacement. Among the merits, one can single out an increase in the power of the power unit by an average of 5-10%, while all the works will be performed correctly. Also, the sound quality will improve - it will transform the car, give it a desired, aggressive character. The sports exhaust system on VAZ 2114 will force associates to perceive this car in a new fashion.

Also, such a replacement will increase the overall service life of the muffler. The sports system uses better materials.

Disadvantages of direct-flow exhaust

Now as for the minuses. The installation of a direct-flow exhaust may entail certain problems in passing a vehicle inspection. If you become acquainted with SDA, then such tuning is unacceptable. The reason for this is higher volumes of harmful gases in the atmosphere and increased noise of work. Today it is punished especially harshly. Therefore, it is worth considering whether a sports exhaust system is necessary (VAZ 2107 is no exception), or you can get by with a civilian version.

Also, the minuses include fuel consumption. With the installation of a direct-flow exhaust, the consumption will inevitably increase. Therefore, such tuning is additional expenditure. Still neighbors can sharply increase interest in the car because of the sounds that the car makes. To explain to them the noise of direct flow in the courtyard in the early morning is very difficult.

Another disadvantage is the reduced ground clearance due to the larger pipe. Also, due to design features in winter, the engine cools faster, which can lead to certain start-up problems.

But all these problems are relevant for owners of inexpensive cars, but if a person has a "Porsche Cayenne", a sports exhaust system for a car of this class will be very handy. Those who drive these cars have a good income, and they do not care about the cost of fuel. The main thing is power, speed and sound.

Can I make my own hands?

The design of the straight-through silencer is not so complicated. The system itself consists of a housing, inside of which there is a sound-absorbing material, a straight-through outlet nozzle, a steel mesh and a pipe with perforations.

The sports exhaust system (on "Ford Focus 2" including) from the elements of the old type, which previously stood on the car, is manufactured. Also, other materials will be needed - two pipes of different diameters. Need a sound-absorbing filler. The pipe, which will be used to create the exhaust, must withstand high temperatures. The direct-flow exhaust takes the hot gases from the motor first. For direct-flow mounting, you must dismantle the old system and cut out all the insides.

Then take a pipe of smaller diameter, which should completely coincide with the size of the old one. After this, make a hole in the junction of the elements. Next, weld a pipe of a larger diameter. The best is a 200 mm pipe, the length of which is 1 m.

Further, the entire structure is inserted into the old housing and welded from both sides. After this, it is necessary to take sound-absorbing material. It must be heat resistant. Ideally, glass wool is used. With this material it is necessary to wrap the assembled muffler on top.

Then the entire structure is wrapped in a sheet of stainless steel. At the end, it is necessary to fix the muffler. This is done with the help of fixatives welded to the body.

Installation in the workshop

If you need a sports exhaust system for Ford Focus 3 in the shortest time, you can just buy the right option. Today, there are many designs for all car brands. Also there were specialized services, which are engaged only in tuning of exhaust systems. They have a large selection of designs with a different tone of sound.

There are even systems with several modes of operation. Experienced specialists in a short time will establish the sports system you like, and the owner will be able to enjoy the result. If you do this kind of tuning with your own hands, it will take a lot of time, effort and money.

Summary

Every car owner dreams that his car has a certain personality. Therefore, many are going to such a revision. Yes, in some cases, even a small increase in power is possible. But why the sport exhaust system Ford S-Max, given that it is a minivan?

Do your own conclusions. In fact, this tuning is quite contradictory. The increase in power will be almost invisible, but fuel consumption will increase noticeably. Also, problems in winter are quite noticeable. Before installing a straight flow, all must be carefully weighed.