Do-it-yourself flame arrester repair

In detail: do-it-yourself repair of a flame arrester from a real master for the site my.housecope.com.

Well, what guys have we already thought about that - how to replace the catalyst with a flame arresterI think it turned out interesting. In this article, we "out of the corner of our eye" touched upon the "PLAMEGAS" device, but today I would like to tell you more about it. Namely, what does it consist of (I will post a few useful photos), and also is it possible to do it yourself ...

THE CONTENT OF THE ARTICLE

As we understood from the article (follow the link above), the catalyst can be easily and simply cut out of the exhaust system. And that your car will work the same way as it did, the ecology will simply suffer, because there will be no filtration of exhaust gases. But many of my readers ask this question - is it possible to knock out the catalyst and not install the flame arrester, that is, leave the "empty" pipe altogether? Of course you can, but it is fraught

Actually, the topic has long been disclosed - of course, it is POSSIBLE. However, as usual, there are several downsides that you will encounter.

Increased exhaust sound. No, do not think that your engine will roar like a sports car, the catalyst (as well as the flame arrester) dampens only 5 to 7% of the sound wave. That is, it will make noise, but not much. However, if you are a picky driver, it will be really annoying.
Reducing the resource of the entire muffler as a whole. Why? Yes, everything is simple - a Catholic neutralizer (as well as a flame arrester) trap hot gases, cooling them down. Then the gases pass much colder, that is, the metal of the entire remaining muffler "does not burn". If you do not want to put either one or the other element. This means that you simply transfer the hot gases further along the "pipe". That is, it is likely that the resonators, the joints of the muffler, will "burn" much faster.

Video (click to play).

Actually, for these reasons, it is worth putting a flame arrester, if you knock out your filter, it was not invented for nothing.

At the moment, there are two main options:

Immediately after the collector - that is, the collector type, is now used very often, we can say that it costs 70% of the cars.

Trunk - that is, it stands on a pipe (roughly in the middle), often used on turbocharged engines. After all, the maximum gas pressure from the engine is needed there, so it is often not installed on the exhaust manifold.

As a rule, the collector type is very simple in design, but the main ones can be more complicated.

Now you can distinguish several basic designs by which flame arresters are made:

Straight... In fact, this is a pipe driven into a housing with a certain non-combustible material. That is, the gases meet practically no resistance here. Often, such options are equipped with trunk "dampers".

Funnel... This is when the pipe narrows, that is, the diameter at the top is larger (at the beginning) than the diameter at the bottom (at the end). Here the gas pressure acts on the stacks, giving off part of the gases.

Spiral type.A spiral is installed inside the pipe, along which gases, as it were, descend from the inlet to the outlet.

Resonator type. Here the device is very similar to a resonator. THEN there are several chambers inside and pipes that do not stand in one line. Thus, it turns out that the gases meet the walls, give off part of the energy, and only then pass on.

I would also like to note that the wall of any high-quality flame arrester must be double, with a "gasket" made of special non-combustible material. That is, it turns out like a cake, it is done in order to avoid a ringing sound under the bottom of your car.

It is the “direct” (that is, the first) type from our rating that is considered classic. I will try to tell you more about its device:

A straight pipe is taken, in which holes (or perforations) are drilled.
Then the body is made, as I indicated above, the desired of two sheets of iron, and the "spacer" between them. They are welded in the form of a cylinder or ellipse.
Insert the pipe into this "barrel". And they lay on the sides a special, non-combustible material, usually basalt wool.
Then the top and keg are brewed, leaving only one tube.

That's all, gases enter the pipe and settle through the perforation in the material. Giving off the temperature and part of the sound wave.

Of course you can, and they are made in every garage. Often they are installed in place of the just knocked out catalyst.

However, it is worth learning, if you want your flame arrester to work for a long time, then it must be made of stainless steel. Because it perfectly resists rust, road reagents.

If you weld from ordinary steel, then its service life will be limited to a maximum of 5 years. Actually, it will simply rot. But if you nevertheless choose a stainless steel, then the service life can stretch for 10 years, and even more. The only thing is that it is gentle to be able to weld a stainless steel.

Now we are watching a useful video.

Removing the catalyst on the vehicle improves vehicle dynamics and reduces fuel consumption. Sports tuning ateliers unambiguously remove the catalyst and suggest replacing it with a flame arrester. The flame arrester by its design is straight-through and it does not delay the release of exhaust gases and at the same time performs a very important function, it "extinguishes the flame" coming out of a running engine, which can eventually burn through the rear can of the muffler. That is why it is so important not just to cut out the catalyst and cook a straight pipe instead of it, or simply open the catalyst, gut it and close it back, and install a flame arrester instead of the remote catalyst. It is very difficult and sometimes impossible to buy a flame arrester for a certain car brand, and ordering it from the other side is long and expensive. Not finding a suitable one for my car, I decided to make a flame arrester with my own hands, special equipment is not required there, the main thing is the presence of straight hands and material.

So let's move on to the manufacturing procedure, for this we need two iron pipes, one with a diameter equal to the diameter of the exhaust pipe of the muffler, the second with a larger diameter and steel mesh brushes for washing dishes. On a pipe equal to the muffler pipe, cut out holes with a diameter of 3 mm (by gas welding or with a drill) along the entire circle and length. Then we insert this pipe in the center into a pipe of a larger diameter and weld it on one side.

Then we stretch the mesh-brushes in a circle in the form of a ring, put it on a pipe of a smaller diameter and push it tightly with a metal bar until it rests against the closed end of a pipe of a larger diameter. We continue this procedure until the last brush mesh reaches the free end of a larger diameter pipe. It took me 26 brush nets to fill in the empty space.

After that, we bend the ends of the pipe of a larger diameter, previously cut with a grinder, and scald them in a circle. This procedure helps to avoid unnecessary ringing noises of the flame arrester while the engine is running. For beauty, you can paint it with silver spray paint. Now, with peace of mind, we cut out the catalyst and weld the manufactured flame arrester in its place.

P.S. A flame arrester instead of a catalyst can be installed on cars with Euro norm 2. On cars with Euro norm above 2, an oxygen sensor is provided with a lambda probe after the catalyst and its removal can lead to an error in the engine control unit, which in turn will increase fuel consumption and worsen the dynamics of the car ...

We take an old resonator, he is 2 years old 45t.km., for the body of the flame arrester, an old silencer was needed.We cut the muffler into metal.

Outer sheathing of the muffler drain 2 layers of metal - outside 0.6 mm; inside - 0.8 mm., by the way, it is well preserved, a little corrosion between these two layers of metal. Next, we look closely at the photo, everything is clear.

The outer diameter of the cut pipe is 80mm, thickness is 1.5mm, suitable for the flame arrester body.

We use the remaining piece for the end walls, then, due to the reluctance to cut the resonator pipe in half due to the further complexity of joining, it was done as follows: the flame arrester body is welded, cut along:

We put on the halves, scald them, then on the outside with a second layer we weld a shirt 0.8 mm thick onto the flanges of the end walls with a gap between the shirts of about 5 mm, the flanges in the previous photos can be seen, the result:

On the end walls - also on an additional layer of metal 0.8 mm

further on the body of the flame arrester noise-sound-heat insulator - plate with flanges with asbestos fabric inside

We cook the pad from the bottom of the car

Similarly, from the bottom side, a pad with asbestos for the resonator, we cook:

By the way, the stench is decent when paraffins come out of asbestos ... from heating. Now we clean with a scraper disc and a metal brush

We degrease and paint with thermal paint (otherwise it will quickly corrode by welding, tear all welded seams well with a brush) thermal paint is declared up to 538 degrees Celsius, let's see ... By the way, one bottle was enough for painting in three layers, there was one extra bottle left ...

Now in a week I will install it somewhere, now there will be no time, there are plans to remove the old (new) resonator, remove the thermal screens from the bottom, clean and cover the barrier in 2 layers with vibro-mastic, assemble in place, and, by the way, reinforced resonator suspension pillows (weight -that added), I hope the metal sound will go away, or it will become much less, in any case, I will approach the assessment of changes carefully and as objectively as possible, otherwise I myself somehow got stuck with SAAB ... motors, the turbine itself dampens the sound decently and the task there is to remove the exhaust as easily as possible. By the way, between the wall of the native resonator and the outer tube of 1.5 mm thick, I was afraid to shove stainless steel brushes for dishes, suddenly they would start to fray with vibrations and pressure and sprinkle into the exhaust or even into the engine, write comments, we will discuss. Yes, I almost forgot, the end walls of the glushak drain and the stainless steel exhaust tip, a mysterious Russian soul, if only 2 outer skins were made of stainless steel, it would not be killed. inside everything is practically new.

Because international environmental standards are getting stricter all the time. Accordingly, change and vehicle requirements. It is worth noting that at the moment, cars are equipped with catalysts, which reduce the level of exhaust gas emissions into the environment. At the same time, a catalytic converter is a rather expensive unit, so that when an element fails, you do not need to immediately run to the store to buy a new device. In addition, such an element reduces the maximum power of the vehicle, and also slightly increases fuel consumption.

All these problems can be solved by installing a flame arrester. But it is rather difficult to acquire such a device. Thus, if you want to save time and effort, we will tell you how to make a flame arrester for a car with your own hands.

Before you start making a flame arrester from the catalyst reservoir of an Audi 100 or any other car, you should decide whether you can do without such a device at all. Indeed, a good alternative to the catalyst would be a direct-flow installation instead of a worn-out catalytic converter. That is why the removal of the catalyst has recently been very common, such a procedure can be done, for example, here:>

On the other hand, such a solution will lead to the fact that the exhaust gases will emit a lot of extraneous noise.In addition, their temperature will not decrease, which will affect the accelerated wear of a number of other vehicle components.

In addition, modern cars have a built-in sensor, due to which error signals will appear on the on-board computer if the device is dismantled. You can solve this problem with the help of a service center specialist.

In addition, according to the Euro-4 standard, it is necessary that a special device was installed on the car that reduces the level of emissions into the environment.

As you can see, installing a flame arrester instead of a catalyst is not so easy, because a lot of difficulties arise here. At the same time, if you approach the solution of this issue correctly, then all these difficulties can be easily overcome.

There are three solutions here:

buy a new original device;
use a universal element;
make a flame arrester instead of a catalyst with your own hands.

It is about the last option that we will talk about now.

Before answering the question of how to make a flame arrester from a catalyst with your own hands, you need to understand what this element is. In fact, the assembly consists of several chambers, which are housed in a cylindrical stainless steel housing. The device has a direct flow design so that the exhaust gases are not trapped, and the special shape of the element helps to suppress vibrations.

Additionally install resonator or stronger, which provide more stable system operation (Stronger is preferred as it prevents back pressure from occurring).

We decided to make this element. First of all, if you started making a flame arrester with your own hands, you will need drawings of this device. Read them carefully before proceeding with any action.

For the works themselves, we need:

welding;
drills;
grinders;
two pipes made of metal (one corresponds to the diameter of the neutralizer, and the second is slightly larger);
metal brushes that are used when washing dishes;
faulty catalyst.

If you do not know how to make a flame arrester with your own hands, then first you should cut the faulty catalytic converter into two halves, then remove the honeycomb from it. In the smaller pipe, which is then connected to the exhaust tract, we make a couple of small holes. Then we insert it into a large pipe. Before that, it is important to center them, as well as weld one edge. Next, you should fill the space that has arisen between the pipes using metal brushes. Try to tamp them as tightly as possible.

We decided how to fill the flame arrester. After we bend the edges of the pipes, and then completely scald them. The finished structure is placed in the catalytic converter housing and welded. It is then assembled and welded at the incision site. The flame arrester is ready, after that it is necessary to weld it into the exhaust system of our vehicle.

If desired, it is worth covering the system with a corrosion-resistant compound. This will increase its service life. It should be noted that this is not the end of the work. To remove the Check Engine error, you need to install a special trick.

When we have already made a flame arrester with our own hands, it is necessary to solve the problem with the ECU, which receives a signal from the oxygen sensor. The most common way out of this situation is to limit the lambda probe from most exhaust gases. As a result, the data received by him will correspond to the norm, so that the error will disappear.

This requires the installation of a special spacer where the sensor is located. The lambda probe itself is somewhat removed from the catalyst. This way everything will work correctly.

Video on how to trick a lambda probe:

We've told you how to make a flame arrester.Such a solution will increase the power of your car, as well as somewhat reduce fuel costs. In addition, the manufacture of this element will cost you an order of magnitude less than buying a new catalytic converter. At the same time, here it is necessary to treat the performance of work as carefully as possible, because otherwise you can only reduce the efficiency of the vehicle's functioning, as well as lead to accelerated wear of individual machine elements.We are watching a video on how to make a flame arrester from a catalyst:

The cross-section of the flame arrester is a perforated stainless tube located in the same container as the catalyst. This device is not capable of burning off the remaining fuel - it only mutes the sound and lowers the temperature of the gases. In accordance with the principle of operation, flame arresters are usually divided into three types:

Active - the pipe is surrounded by packing made of asbestos fiber or other non-combustible materials. This increases the ability of the device to absorb sound.
Passive - equipped with one or more diffusers. Reflecting from the walls, combustion products gradually lose their speed of movement.
Combined - the design combines both principles of work.

Thus, the flame arrester and the catalyst are designed to solve different problems, although they are located in the same place.

Most often, motorists decide to install a homemade flame arrester instead of a catalyst due to the high cost of the latter. For a domestic car, the price of this element is about 30 thousand, and for a foreign car it is estimated at 50 - 100 thousand.However, it should be remembered that replacing the catalyst with a flame arrester entails several negative consequences:

the amount of toxic exhaust increases significantly, which does not meet modern environmental standards;
the service life of the muffler and resonator is reduced;
for the power plant to work well, you will have to make adjustments to the oxygen sensor settings or reprogram the controller.

However, making a stronger with your own hands and then installing it on a car can give a car enthusiast several bonuses:

the flame arrester creates less resistance to smoke when exiting, which will save fuel and somewhat improve the operating conditions of the power plant;
motor power can increase by about 5 - 7%;
if you drive into an area overgrown with dry vegetation in the summer, the risks of a fire will be minimal.

To make a flame arrester from a catalyst with your own hands, you need to find two metal pipes. In this case, the dimensions of one of them must fully correspond to the parameters of the exhaust pipe. Since not every car owner will be able to find pipes made of a heat-resistant alloy, a failed muffler can be used to make a flame arrester.

At the same time, the proposed alteration is not difficult and a minimum set of tools will be required to translate the idea into reality:

welding machine;
a set of brushes for washing dishes;
drill;
Bulgarian;
cutting wheel;
brush for metal.

First, you have to dismantle the muffler, as it is necessary to remove the faulty catalyst. It is with the dimensions of this element that the parameters of the smaller pipe must match. The second pipe will be 5 - 6 cm shorter and cuts must be made at each of its ends. On a pipe with a smaller diameter, holes with a diameter of about 3 mm will have to be made. When it is perforated, the surface must be brushed and inserted into the large one exactly in the center. Then you need to bend it along the previously made incisions and weld it. In this case, it is necessary to make sure that the seams are tight. Having unfolded the pipes with the open side up, put on the brushes on the smaller one and tamp them tightly in this kind of container. It remains only to bend the petals to a small diameter pipe and weld them.

Since the installation of a homemade stronger will necessarily lead to a change in the readings of the lambda probe, he will have to be deceived. Most often, motorists use mechanical trickery devices to solve the problem. Their main task is to limit the amount of oxygen supplied to the sensor. To do this, it is enough to install a spacer in the place where the lambda probe and the flame arrester are located. It is also necessary to move the second sensor at a certain distance from the catalyst. Exhaust gases, passing through the holes of the cheating device, dissipate and lose their initial concentration. Thanks to the offset of the sensor, it fixes the oxygen saturation within the normal range.

We install a flame arrester instead of a catalyst with our own hands. Step-by-step instruction

A flame arrester instead of a catalyst with your own hands is an opportunity to achieve a reduction in fuel consumption (about 2-3 liters per 100 km), to save yourself from problems with the catalyst. The installation process itself is quite simple, with some technical skills, anyone can handle the job without any problems, although consulting with professionals can be of tangible help.

So, the need for replacement is realized, there is not much left - remove the catalyst from the systemby putting a flame arrester in its place. Of course, almost any car service can handle such an operation, but this work is quite within the power of any car owner.

First, you need to purchase two metal tubes, one of which must exactly match the diameter of the muffler pipe, the other must have a slightly larger diameter.Also bought are metal washcloths used by housewives for washing dishes (you will need about 30 pieces).

Through holes with a diameter of 3 mm are drilled in the first pipe. After inserting it into a pipe of a larger diameter, we fix one edge by welding. The other edge is slightly cut with a "grinder" for subsequent bending.

It is convenient to push through with a metal bar. Having filled in the free space, bend the cut edge (this will prevent the brushes from falling out spontaneously). The bend must be carefully welded (“scalded”).

The presence of catalysts in modern cars is due to the desire to ensure control over exhaust gases, more precisely, for the presence of substances harmful to humans. CO2 gas is recognized as the most dangerous for the body. The catalyst is precisely what limits the emission of this gas into the atmosphere, providing the cars with the necessary environmental friendliness.

Tough enough European standards regulate this indicator in such a way as to achieve, if not completely harmless, then the most safe amount of harmful substances.

they "steal" a fair amount of power from the car - about ten horsepower;

service life of catalysts is limited, they fail quickly enough, which results in an increase in fuel consumption;

a car equipped with a catalyst is extremely "capricious" in relation to the quality of the fuel consumed - the slightest deviation from the recommended standards entails a rapid deterioration of the catalyst.

It is customary to call a catalyst a part of a vehicle's exhaust system, which is designed to convert gas exhaust into environmentally friendly elements. The catalyst is located either on the front pipe or immediately behind it.

The interior of the catalyst is a ceramic honeycomb structure. They are used in the catalyst in order to increase the contact area of the exhaust gas with a surface that is coated with a thin layer of an alloy of platinum and iridium.

Unburned residues that touch the surface of the catalytic bed are oxidized with oxygen. As a result of this reaction, heat is released, which heats up the catalyst, thereby activating the oxidation reaction. At the outlet of the catalyst, the exhaust gases have a certain concentration of carbon dioxide.

The flame arrester is a type of resonator and is part of the automotive exhaust system. It is installed in place of the faulty catalytic resonator. Due to the fact that this type of resonator is subject to serious loads, it must be highly reliable. In addition, the flame arrester increases engine power and reduces fuel consumption.

To replace the catalyst, the flame arrester can be purchased or made by yourself. To assemble a flame arrester at home, you need to understand its intended purpose. The installation process is straightforward. With minimal technical skills, anyone can get the job done without any difficulty.

Initially, it is worth understanding what a catalyst is needed for in a car. It has only two main functions:

reducing the temperature and energy of gases that are released in the combustion chamber;

bringing the composition of exhaust gases up to environmental standards.

Due to the fact that gases are discharged at a very high speed and with a high temperature, ceramic honeycombs clog up very quickly, and the backfiller cakes or burns out altogether.This is the reason that the gas transmission capability of the resonator is drastically reduced. Simply put, the car engine “chokes” with exhaust gases, since the faulty part is not able to remove them.As a result of such a problem, the dynamics of the car drops many times - this can be noticed during the acceleration of the car.In addition, the consumption of gasoline increases significantly. A car equipped with a catalyst is very demanding in terms of the quality of the fuel used. The minimum deviation from the recommended standards leads to very rapid catalyst wear.Such a list of shortcomings and problems made motorists seriously think about finding an alternative to using the aforementioned catalyst for the exhaust system.The catalyst must not be completely removed from the exhaust system. After a while, this will cause a hole burnt out by gases to form in the rear bank of the muffler.To avoid such problems, it is recommended to assemble the flame arrester and replace the catalyst with it. The design of the flame arrester allows you to directly and without delay remove exhaust gases from the car, and its principle of operation does not at all affect the efficiency of the engine. The flame arrester effectively reduces the temperature of the gases.The only significant drawback is that the level of gas waste emitted into the atmosphere increases significantly, therefore, it is prohibited to use them in European countries.During operation, the flame arrester receives exhaust gases that enter the exhaust system, processes them and discharges them. At the outlet, the temperature of the gases becomes much lower, and their speed drops significantly.In addition, the flame arrester breaks down the primary flow of gases that come from the manifold. This approach is used to ensure stable operation of the main resonator.In addition, the flame arrester mixes all unstable ufpjd flows from the cylinders into one stable flow. Due to the design of the body of the part itself, the flame arrester significantly reduces the level of noise that appears inside it due to the beating of gases.The flame arrester housing consists of two parts - external and internal.In order to prevent unnecessary noise from appearing during the operation of the exhaust system, special noise suppression systems are used.The noise suppression system of the flame arrester is conventionally divided into 2 types:

active - special fillers (synthetic and basalt fibers) are used that absorb sound waves;

passive - all sounds are eliminated by reflecting sound waves from the walls of the flame arrester housing.

Unfortunately, high temperatures cause fillers to burn out very quickly. Their service life can be extended by using a special stainless steel mesh. Using passive noise cancellation is much more practical. To avoid unnecessary noise, the body of the flame arrester is made of two layers. In this case, all vibrations that the inner layer creates will be damped by the outer one.The material from which the outer layer is made must be resistant to corrosion - sudden temperature changes, in combination with salts, kill even steel with aluminum impurities in a couple of years, so the case is needed from heat-resistant stainless steel. The volume of the flame arrester itself should be taken into account, which determines how the resonator and silencer following it will work. If its volume is insufficient in the resonator or muffler, when the gas pedal is pressed sharply, an unpleasant rattling occurs, and at the exit from the muffler, the overall sound level becomes higher. In the case where the muffler and resonator are of the direct flow type, the rattling is usually not so noticeable.When installing a direct-flow tuning exhaust system, the sound requirements are somewhat different: you need a thoroughbred, loud sound with a predominance of low frequencies. Therefore, a straight-through flame arrester used for tuning can be simpler in design. It must be reliable, have a two-layer casing and flow section corresponding to the motor power.The catalysts are compressing the exhaust too much. When the exhaust gases pass through the catalysts, there is a strong decrease in the throughput of the track.Flame arresters are free from this drawback and allow you to normalize the average pressure of gases.The appearance of the flame arrester is also important. The ability to use different colors and types of paints allows the design of the flame arrester to be tailored to the style of the vehicle.To our great regret, even well-known brands for the most part do not have direct-flow resonators with a double-layer casing available, since in the West control over the purity of exhaust gases is much stricter. Therefore, metal-based catalysts with low resistance are popular there. It is considered acceptable for them to leave a standard catalyst behind the tuned manifold. Lack of interest in parts that can be used instead of a catalyst is considered the main reason that Western manufacturers do not release any parts of this kind.To make a flame arrester yourself, you must have a certain set of tools available, such as a welding machine and metal brushes, as well as two pipes with different diameters. One of the pipes must match in diameter with the exhaust system of the machine, and the other must have a larger diameter.On a pipe equal in diameter to the pipe of the muffler, holes with a diameter of 3 mm must be cut along the entire circle and length. This can be done with a gas welding machine or drill.This pipe must be inserted centrally into the larger pipe and welded on one side.After that, the mesh-brushes need to be stretched in a circle in the form of a ring.They are put on a pipe of a smaller diameter and pushed tightly with a metal bar until it rests against the closed end of a pipe of a larger diameter. This procedure should be continued until the last brush mesh reaches the free end of the larger pipe.Further, the ends of a pipe of a larger diameter, pre-cut with a grinder, are bent and scalded in a circle. This procedure helps to avoid unnecessary ringing noises of the flame arrester while the engine is running.It remains only to cover it with a special compound that will protect the part from corrosion and install it, having previously got rid of the catalyst.The presence of catalysts in modern cars is explained by the desire to provide control over exhaust gases, or rather, for the presence of substances hazardous to humans in them. CO2 gas is considered one of the most dangerous for the body. The catalyst limits the emission of this particular gas into the environment, providing vehicles with the required level of environmental friendliness. Very strict European standards use certain values that make it possible to achieve, if not absolutely safe, then the most harmless amount of hazardous gas emissions.All modern cars (even of domestic production) are equipped with catalysts. From the school chemistry course, we know that a catalyst is a substance that can significantly accelerate the course of a chemical reaction.With regard to the car, everything is much simpler. The catalyst is the section of the exhaust system that has the function of reclaiming most of the harmful exhaust gases. Thanks to this, the exhaust is less toxic. The service life of the catalyst is 100,000 km. After that, it must be changed. However, it is quite expensive. In this case, you can use an analogue - a flame arrester. You can buy it at adequate prices on the website The fact is that the catalyst has a cellular structure. When high-temperature exhaust gases enter the catalyst, they are retained there and partially burn out.Naturally, in this process, a large amount of soot is formed, which sticks to the construct. But this is not so bad. The high temperature results in sintering and soldering of the internal structure of the catalyst.
You can verify this after its radial sawing (of course, after preliminary dismantling).In other words, it is not possible to clean the catalyst.Its complete replacement is in progress. However, in order for the catalyst to maintain its technical qualities for at least 100,000 km, it must be made of specialized materials. Including ceramics. Naturally, the design is very expensive both because of the complexity of production and because of the high cost of the materials used.The flame arrester is a makeshift replacement for the catalyst. It serves much less (at least twice), but it costs much less (the difference can be up to 5 times). In addition, if you make a flame arrester yourself, then it will cost nothing at all.To create a flame arrester, you will need the following materials:

a pipe that matches the muffler pipe;

a pipe that is 2-3 cm larger than the one selected in the first paragraph;

metal brushes / scourers for washing dishes;

welding machine;

drill.

The pipes are inserted into one another and welded in a petal manner. A large number of holes are preliminarily arranged in the outer pipe. They are carried out according to the scheme (an image of a grid is glued to the pipe and a hole is made at each intersection of the lines). Metal brushes / scourers are pushed into the inner pipe.The flame arrester is ready to be installed in the exhaust system! The video demonstrates an alternative way to create a flame arrester yourself: