To resort to the manufacture of a direct exhaust pipe yourself - this means increasing the thrust of your car. But now the vehicle will be louder due to the splash of a powerful stream of gases. The sound will be similar to the movement of sports cars. But it is important that the “bank” not only roars, but makes a pleasant sound. How to properly perform forward flow with your own hands and eliminate excess noise? Consider right now.
What is forward flow?
If you do not know how to do forward flow with your own hands (photos of the works are presented in our article), then it is worth mastering the information from the very beginning of this simple process. Today, many workshops are engaged in the modernization of vehicles. And if in any city you can only change the oil, repaint your car and bring other innovations, then in more professional workshops you can convert an ordinary car into a sports one. One of the modernization methods is the installation of a direct exhaust pipe.
Direct exhaust pipe is the part that gives sound to your vehicle. Moreover, all operations can be performed independently. It is only necessary to take a set of tools and materials. And if we talk about statistics, then forward flow can be found more on domestic cars. Innovations are usually introduced by the owners of the "nines", "sixes" and other AvtoVAZ models. Do-it-yourself co-current for VAZ is quite simple. And even if the operation is not carried out correctly, you will not lose a lot of money. If you do everything right, then the effect will greatly please you.
What is a silencer?
It is a plug that is installed to reduce the sound of the direct exhaust pipe. In size, this part should coincide with the final diameter of the exhaust pipe. The silencer is taken a little smaller in size, because the plug is inserted into the "jar" itself. In addition, several bolts are used for fastening, so that, if necessary, it can be removed with simple improvised tools. And if you want to carry out this procedure on a car, then such a process will not take much time.
Some features you need to know before installation
If you do not know how to make a direct exhaust duct on a VAZ with your own hands, then this is not a problem. Of course, many drivers will want to buy a ready-made addition, but there are several nuances. Before you begin to make or install a finished silencer, you need to study the principle of its operation and the function of the elements.
Prior to installation, the combination of silencer and carburetor works as a unit and allows you to maintain the correct amount of air at the inlet and outlet. When installing a direct-flow system, the system is unbalanced. This can lead to further problems in the engine. The basic rule that you need to know and follow is that a self-made forward flow does not give any effect other than amplifying the sound, unless other work is done to improve other nodes. This may include increasing the quality of the power system in the motor, adjusting the fuel supply, filtering the air, and much more.
Sport and standard silencer: what is the difference?
Direct-flow pipe, made with his own hands, is a pipe that does not have any turns. Although in some places it can narrow and expand. In this case, the exhaust can allow the exhaust gases to fly out without any obstruction. The standard silencer, which is installed on all cars, is a system that allows you to reduce noise from gases. It is for this reason that there are many twists and turns.
What is a silencer for?
Everyone knows that the exhaust gases after the combustion chamber fall under pressure into the exhaust manifold, and from there along the back of the car in the pipes reach the atmospheric air. At the same time, a fairly loud process is created with direct-flow, and without it it will be quieter. In addition, a self-made forward flow system adds up to 5 percent of power to the motor. That is why many are trying to install this design in order to upgrade the car. It is worth noting that the sound volume can reach 120 decibels (this is within the permissible limits).
Direct flow advantages
Among the main advantages are the following:
- The diameter of the pipe increases, which increases the purge of the cylinders.
- Power is increasing.
- There are fewer bends in the connection, that is, throughput also increases.
- In the manufacture of used only high-quality materials in the form of stainless steel. This allows you to increase the life of the product.
Design flaws
Among the main disadvantages are the following:
- The increased noise level.
- Such designs usually do not have catalysts, so they cannot be used according to environmental standards.
- The engine warms up longer in the winter.
- The clearance of the car decreases.
The main details of the direct-flow system
The once-through system on any car will only work correctly if all the parts are optimized for the model. Installing only the silencer itself will give a partial result. In general, the system will consist of the following components:
- Collector. It is made of stainless steel, which reduces weight and makes it possible to make a configuration with resolution zones. This allows you to remove the resistance to gas flow.
- Catalyst. Usually, there is a replacement for a sports version (flame arrester), which has increased throughput. It is also possible to replace with a simple pipe.
- Resonator. Here it is possible to completely remove this part or replace it with a sports one.
- Muffler. Dimensions and length will depend only on whether the resonator is or is not.
How to make a direct exhaust muffler with your own hands? Such a homemade silencer today is widespread among many motorists. And each of them boasts some specific installation technology. Below we describe one of the most popular options.
Necessary materials
Among the main materials and tools that may be needed, we note the following:
- An iron pipe with an opening of diameters of 52 millimeters. This option is perfect for Russian cars produced at AvtoVAZ.
- Apparatus for welding.
- A grinder that can work for cutting metal.
- Metal brush (50 pieces).
Work process
Once all the materials are ready, you can proceed with the modernization of your silencer. It is important to observe the sequence of simple actions:
- The old muffler is dismantled from the car. Using a grinder, a groove is cut along the length of the resonator.
- All internal elements are cut with a grinder. This will include pipes, stiffeners and more. In this case, the pipes are cut, leaving 30 millimeters on each side. This is necessary so that the new one can be welded to the old.
- The prepared new version of the pipe is cut to size. They must be such that the part fits perfectly into the muffler.
- Holes are made on the pipe every 20 millimeters. They can be made in the form of cuts or holes.
- The resulting notched component is welded to the ends of the resonator tube.
- Free space is sealed with brushes. They can be bought at any hardware store.
- The initially cut out part of the resonator is covered and welded.
- The end from the silencer is cut off.
- A new pipe is installed and welding is in progress.
If you decide to do a forward flow on a motorcycle with your own hands, then the procedure will be similar to that for a car.
Recommendations
Very often, many experts recommend protecting the silencer, and subsequently treat it with a primer and some kind of paint. All this allows to increase the service life and remove all kinds of problems in the future. This must be done before installation. As a result, you get a quality home-made forward flow, the cost of which will be quite low.
But how to make the silencer quieter?
Quiet forward flow with your own hands can not be done right away. Many after installing such a silencer want to make it quieter. In this case, a simple design such as a flute is used. It is a perforated pipe up to 25 centimeters long, at the end of which a washer is welded. The latter plays the role of a stub. The structure is mounted on bolts inside the direct exhaust pipe itself.
How to make a flute yourself?
If you have a desire, some knowledge and skills, a flute for direct exhaust pipe with your own hands can be performed with a minimum set of materials and tools. It will turn out to be a fairly cheap option, which will be better than the Chinese counterpart. In this case, you will need a stainless steel pipe with a diameter of 20 millimeters, as well as sheet metal with a thickness of up to one millimeter. Arc welding is best. Do not forget about the safety rules.
A plug with holes from a sheet of metal is welded to the pipe. Next, bolts are screwed in the amount of several pieces. When manufacturing, it is best to accurately measure the diameter of the direct-flow pipe at the slice so that the plug does not fit tight enough, but there is no gap. It is important to remember that such an installation can also reduce engine power. Indeed, to make the process of exhausting gases quieter without loss will definitely not work. That is why you should immediately think about whether you need this add-on or you want to stay at the same power, but at the same time constantly endure loud sounds from your engine.
Instead of a conclusion
So, we figured out how to make forward flow. As you can see, it’s quite possible to make a home-made sports muffler even with a minimal set of tools.