Replacing the exhaust system of a VAZ 2107 injector

Purpose and design of the muffler for VAZ 2104–2107 cars

Exhaust gases escape from the engine cylinders under high pressure and with loud noise. The muffler receives and slows down gases, converts their kinetic energy into thermal energy, smoothes out pulsations and muffles the sound, then releases the weakened exhaust into the atmosphere.

Thus, among the main functions of the muffler:

• reduction of engine noise;
• conversion of exhaust gas energy;
• safe release of gases into the atmosphere.

In everyday life, a muffler is called an exhaust tract or exhaust system. In fact, it is only one, albeit the most important, element of the fuel system. For VAZ cars with a classic layout, it consists of a reception pipe connected to the engine exhaust manifold, an additional (resonator) and a main muffler.

For VAZ cars with a classic layout, the exhaust gas system consists of a reception pipe connected to the engine exhaust manifold, an additional and main muffler

All of the above is located under the bottom of the car. The system elements - pipe, resonator and muffler - are attached to each other with clamps. The exhaust pipe is rigidly screwed to the manifold and the gearbox cover, the main muffler body is suspended from the body by rubber straps, and the exhaust pipe is suspended by a rubber cushion.

At the Politburo, the Minister of Automotive Industry Alexander Mikhailovich Tarasov made a report in which he spoke about the state of affairs in the automobile industry and spoke about the need to build a new plant using foreign experience, and Dmitry Fedorovich Ustinov, the former head of the Ministry of Defense, who oversaw issues of the military-industrial complex, objected, that having such a “defense industry”, it costs nothing to build a new plant on our own. And then Kosygin proposed building two factories - one using Soviet “patterns”, and the second - with foreigners. The idea was accepted, and as a result, two with a capacity of 220,000 cars per year and a VAZ with an annual capacity of 660,000 cars appeared.

Innokenty Kishkurno

Wheels

What is a muffler for?

The exhaust system of any vehicle is based on the use of a special element called a muffler. Operating a car without a muffler is basically impossible.

The muffler is designed to perform two main tasks:

reduce exhaust noise;

transform the temperature and pulsation of the exhaust.

The rationale for using a muffler is explained by the fact that the exhaust gases, after exiting the engine cylinders, have very high pressure and temperature. At the same time, sound waves are launched ahead of the gases in the exhaust system, which can make very loud noise during the exhaust. The muffler converts sound waves into heat energy, thereby reducing the amount of noise created by the exhaust. However, all modern mufflers in some way affect engine performance, since the transformation creates counteraction, due to which engine power is reduced.

The end of the pipe should protrude no more than 5 cm beyond the car body

VAZ car mufflers use several different methodologies to reduce noise:

expansion/constriction of gas flow;

change in flow direction;

sound wave interference;

Mufflers use multiple chambers of varying volumes to expand or narrow the flow of gas exhaust.

On VAZ 2106/2107 cars, one muffler is installed. For comparison: modern foreign cars can have up to five mufflers.

Muffler on VAZ classic

The entire exhaust system on domestic Zhiguli cars of the sixth and seventh models consists of three parts: the exhaust pipe, the main muffler and the resonator. Each of them performs its own function: the pipe extracts exhaust gases from the engine, the muffler converts gases and sounds, and the resonator reduces the noise level.

Mufflers for VAZ 2106–2107 are “famous” for their fragility, since thin metal can burn out very quickly. Original factory products last for 60–70 thousand km, while homemade mufflers often do not last even 30 thousand km.

Traditionally, VAZ classics are equipped with mufflers manufactured by AvtoVAZAgregat. They are made of stainless steel with a thickened wall. Therefore, their service life can be considered durable. Silencers of more modern Zhiguli models can be considered alternative options, but not all of them are optimally suited to the “sixes” and “sevens”. However, craftsmen quickly remake the fastening elements and equalize the length of the mufflers in order to make them identical to the originals.

The modern muffler produced by AvtoVAZAgregat is an integral part of VAZ cars

Traditionally, the muffler on a VAZ classic is installed under the bottom of the car and is secured using bolted connections and special suspension rubber bands. The exhaust pipe exits from the rear of the body on the left side.

Replacement and repair of muffler for VAZ 2104–2107 cars

To replace the muffler you will need:

• inspection hole or lift;
• screwdriver;
• a set of car keys;
• hammer.

Removing and installing the muffler

To dismantle the “glushak”, repair it, and then return it to its place, follow this sequence of actions:

1. Drive the car into the inspection hole. Stop the engine and turn off the ignition. Wait until the exhaust manifold cools down.
2. Unbend the hooks of the rubber suspension straps of the muffler.

Using a screwdriver, straighten the hooks of the rubber straps on which the muffler is suspended

Unscrew the exhaust pipe fastening to the rubber cushion with a wrench

Loosen the clamp between the pipes of the main and additional muffler

Carefully knock the resonator out of the mount by hitting it with a hammer through a wooden spacer

Unscrew the exhaust pipe from the gearbox bracket

Carefully bend the stoppers and unscrew the exhaust pipe from the manifold

Install the new muffler in the opposite order of removal. However, do not use a used gasket. Before assembly, treat the pipes at the places where they are connected with clamps with graphite lubricant.

Video: replacing a VAZ 2107 muffler in a garage

In 1979, at VAZ, a car was built especially for “dear Leonid Ilyich,” which received the common name “half past six.” This happened after the presentation of the VAZ-2105 and 2107 models to the country's leadership, the serial production of which was still quite far away, and Brezhnev wished to give such a car to one of his family members. The result was a unique car, the body and interior of which was a hybrid of a “six” and a “seven” - hence the name.

Innokenty Kishkurno

How to repair a muffler with your own hands

Before you begin repairing the muffler, you need to evaluate the feasibility of these actions. Not every car owner has the skills to work with a welding machine. In addition, the muffler cannot always be properly repaired - in cases of severe burnout, it is best to immediately replace it with a new one.

Reasons for failure

Most often, mufflers on the VAZ 2106/2107 lose their functionality for the following reasons:

• mechanical damage while driving on uneven roads, impacts;
• rapid changes in temperature conditions, especially in winter, when it is cold outside, and inside the case there are very high temperatures due to exhaust;
• impurities in gasoline that come out along with exhaust gases and affect the condition of the metal surfaces of the muffler.

It is unsafe to operate a car with such damage to the muffler.

However, how urgently do you need to repair the muffler if you suddenly notice some damage to its body or black exhaust from the pipe? What are the dangers of operating a Zhiguli with a burnt out or deformed muffler?

Firstly, if there are holes in the body of any element, then the generated gases will enter the cabin. The main danger is that the exhaust is colorless and odorless and cannot be felt. In this case, the driver begins to experience headaches, nausea and dizziness. If you stay inside a car with the engine running for a long time, you can lose consciousness and even die.

Secondly, if the exhaust system does not work properly, engine power is reduced. This is especially noticeable when accelerating, starting from a standstill, or overtaking.

Thirdly, if the plug is faulty, the engine begins to consume a lot of gasoline. The carelessness of the car owner will lead to the fact that the muffler will work worse and worse, and the displacement per 100 km will increase.

How to weld a muffler

Most often, the muffler loses its tightness and therefore cannot work normally. In this case, holes can appear both on the pipes themselves and on the welds.

It is recommended to clean the weld seam and paint the work area with heat-resistant paint

Using a welding machine and metal patches can be considered the most reliable way to repair mufflers.

In order to weld a “muffler”, you need to prepare electrodes of a suitable size (it all depends on how large the hole is burned in the muffler) and a sheet of metal of the required size. After which it is recommended to carry out welding as far as possible from the edge of the holes, since the thinned edges of the metal can quickly collapse:

1. Clean the torn edges of the muffler from rust and dust.
2. Degrease the metal with a solvent.
3. Apply a metal patch to the body and grab it in several places around the perimeter of the hole.
4. After this, you can begin to apply full welds.
5. After the seams have hardened, it is recommended to clean the slag with a wire brush.

It is recommended to apply welds carefully so as not to burn through the muffler body

How to change the gasket

There is a reinforced gasket between the main muffler and the resonator part. Its purpose is to prevent the resonator from heating, so it is made of heat-resistant metal.

After dismantling the muffler, it is recommended to change the gasket. This does not take much time, since the element is inserted into the muffler pipe and clamped between its parts.

How to replace hanging rubber bands

This is perhaps the simplest procedure in repairing Zhiguli mufflers. The rear part of the pipe is attached to the body with three hanging rubber bands. During the ride, some of them may get lost or seriously deformed.

To change these rubber bands, you just need to drive the car into an inspection hole or overpass, remove the old products and install new ones in their place. Some car owners change suspension rubber bands without an overpass, simply crawling under the body from the rear left side.

Video: changing the resonator and muffler on a VAZ 2106/2107 car

The muffler in classic VAZ cars cannot, of course, be called a durable element. However, it is up to the owner to carry out the necessary repairs in a timely manner or change the plug if necessary. Moreover, the procedure is simplified as much as possible by the design of the VAZ 2106/2107 themselves. Therefore, any work on the muffler can be done with your own hands in a garage.

How are knocking and muffler position related?

If the muffler suddenly starts knocking on some parts of the car, find the source of the extraneous sounds. Usually the reason lies in stretched rubber fasteners. After replacing them, the knocking will stop.

Sometimes a knock appears after work related to removing the muffler. In this case, extraneous sounds are a consequence of installation errors. Round pipes at the joints with clamps can be slightly rotated relative to the correct position: more or less than required, pushed into each other.

To eliminate knocking, restore the optimal position of the exhaust system elements.

Sagging mufflers can be “treated” using similar methods—by replacing rubber bands and correcting the position of joints.

Video: repairing a sagging VAZ 2106 muffler

The nuances of muffler repair

The muffler of “classic” VAZ cars, according to the manufacturer’s recommendations, cannot be repaired. If a malfunction occurs in any element of the exhaust tract, the part must be replaced with a new one.

In fact, motorists often prefer to repair holes burned in the muffler - the most common defect - by welding.

The occurrence of “fistulas” is indicated by a change in the sound of the engine and the appearance of smoke from under the car. To troubleshoot, place the machine on a platform and inspect the elements of the exhaust system.

If the cause is a burnt gasket, remove the muffler and replace it. When you have an assistant, you can do without removing all elements of the system. Proceed in the following order:

1. Unscrew the pipe fastening to the gearbox.
2. Unscrew the nuts securing the exhaust pipe to the manifold.
3. Together with an assistant, pull the “pants” off the pins while simultaneously rotating the bend of the resonator pipe.
4. Replace the gasket, install the pipe in place, tighten the fasteners.

Replacing a burnt muffler gasket eliminates extraneous sounds from the engine

A welded muffler usually lasts less than a new one. But welding is also cheaper than buying. Usually, if it is necessary to repair a muffler by welding, they turn to professionals. If you have the equipment, you can do the work yourself. For this you will need:

• welding machine;
• blanks for patches made of sheet metal 1–2 mm thick;
• a piece of pipe of the same diameter as the failed one;
• grinder with cutting disc for metal;
• metal brush;
• sandpaper;
• heat-resistant paint for metal.

To repair the muffler, follow this sequence:

1. Remove the muffler from the vehicle.
2. Using an external inspection, determine the location of the malfunction and the extent of the damage.
3. If there is a large hole in the muffler body, evaluate the condition of the internal parts. It is possible that repairing the external surface will not bring the desired restoration of the functions of the muffler without replacing the internals. In this case, it is advisable to contact professionals or simply replace the faulty part with a new one.
4. Cut out the burnt area. From the blank, make a patch larger than the damage. Weld the patch over the hole with a continuous seam.
5. If there is damage at the junction of the pipe and the muffler body, cut out the defective area, replace the damaged part of the pipe, and weld the repaired pipe to the muffler with a continuous seam.
6. Clean the repaired muffler from dirt and rust, paint the part with two layers of heat-resistant paint.

Photo gallery: muffler welding

Video: repairing a VAZ muffler by welding

Replacing and repairing a muffler is a dirty and time-consuming job. But there is nothing complicated about it. You never know what you can do till you try.

Over time, the exhaust system of the VAZ 2107 fails and the owner has to go to a service station or change it himself. In the latter case, you will need a standard tool and an inspection hole. You may also need a grinder and WD-40.

Making a car muffler quieter

To begin the fight against excessive car noise, launch an offensive on all fronts. Before you take decisive action, you must clearly understand the operation of the exhaust system of your car engine. After all, the engine and exhaust system are balanced with each other so as not to interfere with each other’s work. And a violation of this balance can lead to improper engine operation.

Use the simplest method to reduce noise - install a “can” (as car enthusiasts call an additional final muffler). It is made of a housing through which a pipe with holes passes. The body is filled with heat-resistant fiber filler, secured with a fine mesh. It is installed between the catalyst and the standard muffler.

Cut the section of pipe between the catalyst and the muffler to the required length, corresponding to the length of the “can.” Remove the muffler. Install and attach the “can” to the resonator, using clamps and sheet asbestos to seal the joint.

Install the muffler in its original place, joining it to the “can,” using, again, clamps and sheet asbestos to seal the joint. When installing a “can” or final muffler, it is necessary to carefully seal the pipe joints with heat-resistant asbestos in order to prevent breakthrough of exhaust gases, which will create an increased noise level.

An additional effect in reducing noise will be obtained by replacing the resonator installed on the car by the manufacturer with the same “can” with a heat-resistant filler. Replacing the standard resonator can be done using the same method.

Another way you can try to suppress noise is to replace the exhaust manifold with a specially designed manifold. Unfortunately, this method is associated with the difficulty of acquiring such spare parts for certain brands of cars. These are the main ways to make a quiet muffler for a car. If you know others, we are happy to welcome your comments.

Forward flow is an opportunity to increase the power of a car’s engine, add aggressiveness to the car and improve jerkiness. You can assemble and install it yourself by studying the step-by-step instructions.

Exhaust system design of VAZ 2107

Like most passenger cars, the VAZ 2107 has an exhaust system consisting of three main parts:

1. a receiving pipe into which gases enter from the exhaust manifolds;
2. VAZ 2107 resonator (additional muffler), where gases are directed from the exhaust pipe and where the exhaust sound is partially reduced;
3. muffler, which absorbs most of the engine exhaust noise.

In addition to the above parts, the exhaust system includes:

• muffler mounting pad;
• pillow bolt;
• muffler suspension belt;
• clamp bolt and clamp securing the muffler to the resonator;
• clamp bolt and clamp securing the resonator to the exhaust pipe;
• clamp bolt and clamp securing the exhaust pipe to the body;
• nuts securing the exhaust pipe to the manifold;
• pad;
• locking plate;

Muffler device (diagram)

The design of the muffler has already been partially discussed, now let’s delve deeper into the topic.

You probably already realized that mufflers have many distinctive features; no devices have the same design; each manufacturer introduces its own innovations to improve the design of its brainchild.

The main goal is to reduce the sound as much as possible without losing engine power.

In a typical production car, the muffler takes from 5 to 7% of the power. To achieve absolute silence, you need to either increase or install an additional device with a resonator, and this will take another 5 to 7% of the power. The total is 10–15%, which no one wants to lose.

Those. It turns out that it is not so easy to make an ideal muffler so that there is little noise and no loss of power.

The design of the product is largely influenced by:

1. Engine capacity;
2. Tuning or regular engine installed;
3. Make of the car and its purpose (sports or regular);
4. Who is the manufacturer.

The classic muffler for most cars consists of:

1. Inlet and outlet pipes;
2. Internal pipes;
3. From two or more expansion chambers;
4. Internal partitions;
5. Helmholtz resonator.

The sound entering the device through the inlet pipe is reflected from the walls and travels a distance of more than 1 km, constantly weakening.

The resonator serves to weaken the most powerful component of the sound wave, which a conventional labyrinth cannot cope with.

The chambers in the muffler are of different sizes because the length of the sound waves is also different.

The inlet pipe, as a rule, has holes and is considered dissipative, since sound entering it is partially dissipated in the first chamber.

The waves move chaotically in space, reflecting from the walls and constantly losing energy. This occurs due to the force of friction against air molecules.

The more of the wave remains in the first chamber, the more the wave attenuates.

The remaining waves pass into the second scattering chamber; however, it is not easy for them to pass from a narrow pipe into open space since, according to the law of acoustics, a sound wave seems to collide with a wall of air.

Part of the wave is not able to enter the second chamber and is reflected back from the interface and partially absorbs the oncoming flow.

The same waves that were able to get into the second chamber are randomly reflected from the walls, absorbing each other and losing energy during friction with the air.

But the main component of the sound wave passes further and enters the Helmholtz resonator.

The sound wave again has to leave the narrow space into the free chamber, and it seems to press on the air in the resonator, creating air vibrations.

This creates a reverse sound wave that has the same frequency as the original one. They collide and destroy each other.

Some of the waves remaining in the second chamber enter another pipe and are transported to the third chamber.

There again, sound loss occurs due to friction with the air, and only after this the weakened wave enters the output pipe, and from there out.

Exhaust system functions and parts replacement intervals

Despite its apparent simplicity, the exhaust system performs several important functions:

• removal of fuel combustion products;
• reduction of noise level from the exhaust;
• maintaining air balance in intake and exhaust systems;
• ensuring ventilation and cleaning of cylinders;
• reduction of CO content (in the presence of a catalyst).

Exposure to high temperatures, moisture, fuel and oil combustion products leads to through corrosion of exhaust system parts. This is aggravated by the external influence of gravel, sand and salt solutions that are used to treat roads in winter. Therefore, parts of the system have to be changed. The frequency of replacement depends on the following factors:

• car use activity;
• frequency of machine operation in bad weather (rain, snow);
• fuel quality;
• quality of exhaust system parts.

Why does the exhaust system make loud noises?

To understand the reason for the appearance of loud sounds, you need to know the principle of operation of a standard exhaust system and the loads it is subjected to during operation. Temperature changes (cold and heat), contact with moisture, dirt and dust - all this provokes the development of corrosion. After some time, sections of pipes with perforations and those parts of the partitions that are located inside the muffler can burn out. Sound reflectors are gradually becoming unusable. In especially difficult cases, only one thing can save you from a loud exhaust system - replacing the old muffler with a new one.

Where do loud noises come from in the exhaust structure? They have different origins. Firstly, these are sounds from the expansion of gases that pass through it. Secondly, there is noise caused by vibration of exhaust components.

Source

Replacing the muffler VAZ 2107

The VAZ 2107 muffler (injector and carburetor) is connected to the resonator with a clamp, which is located in front of the rear axle. Before removing the clamp, it should be tapped with a hammer to make it easier to unscrew the threaded connection and uncouple the pipes. To change the muffler, you need to do the following:

• loosen the clamp bolt and remove (move) the clamp;
• pull the flared muffler pipe off the resonator (if that doesn’t work, knock it down with a hammer and chisel);

• remove the muffler from the cushion and mounting straps;
• install a new muffler on the VAZ 2107;
• tighten the clamp.

Replacing the VAZ 2107 resonator

The VAZ 2107 resonator does not have fastening parts to the car body, so it is necessary to hold it when replacing it. Otherwise the exhaust pipe will be bent.

The replacement work consists of the following steps:

• tap clamps and pipe connections with a hammer;
• loosen the bolts of the clamps and move the clamps fastening to the “pants” and the muffler;
• disconnect the resonator from the muffler by undocking the pipes;
• disconnect the resonator from the receiving pipe (“pants”);
• install the new resonator in the correct position;
• connect the parts and tighten the fastening clamps.

Note: the resonator tank must be parallel to the ground, otherwise the part will knock on the bottom of the car and cling to uneven road surfaces.

Replacing the exhaust pipe (“pants”) of a VAZ 2107

When replacing the exhaust pipe, be sure to replace the gasket between it and the exhaust manifold. It is also better to change the nuts securing the “pants” to the manifold. The procedure is as follows:

• loosen the clamp and disconnect the pants from the resonator;
• unscrew the four nuts securing the exhaust pipe to the manifold;

Important: unscrew the nuts carefully so as not to twist the fastening studs. Otherwise, you will have to drill out and replace the studs.

• remove the “pants” (exhaust pipe) and gasket;
• install a new gasket;
• install a new exhaust pipe;
• connect the exhaust pipe to the resonator, tighten the fastening clamp;
• tighten the nuts securing the “pants” to the manifold.

Exhaust System Mounting Parts

The clamps and suspension elements of the exhaust system are exposed to moisture and salt during machine operation. In addition to corrosion, metal “fatigue” accumulates in clamps. The clamps begin to loosely hold the connection, as a result of which exhaust gases begin to break out, creating noise. Old suspension cushions may break off, which can damage exhaust system parts. Therefore, it is advisable to change the mounting parts; whenever large parts are replaced, the mounting elements on which they are attached should also be changed. This will avoid unnecessary problems and expenses.

Muffler VAZ 2107 - how to replace it yourself

A clear understanding of the method of action when carrying out such an event as replacing a muffler

VAZ
2107
will help every car owner fulfill his plans quickly and without errors. On the one hand, removing the old muffler and installing a new one seems easy, but on the other hand, you need to be prepared for some difficulties.

About direct flow or PG

A direct-flow muffler (PG) is an improved alternative to a stock exhaust, which is not capable of ensuring a quick and timely release of gases from the engine system (ICE). The standard exhaust system especially suffers (chokes) after installing a sports camshaft or after boring the cylinder head cylinders (in other words, on a forced engine).

The GHG is designed to modernize the exhaust system, which increases gas emissions. In addition, a correctly installed PG will provide an increase in internal combustion engine power by 10–15 hp. However, you need to be prepared for drastic changes: everything will need to be replaced, from the catalyst to the tip.

Increasing the power of a power unit using a PG, unfortunately, also has a “other side of the coin”, associated primarily with a loud sound attack of about 120 dB. This is the norm for sports cars, but hardly for civilian ones. And this explains the mass of cases of fines issued by law enforcement inspectors to the owners of such cars.

To minimize this modernization flaw, craftsmen use various methods to reduce sound. Installing a flute muffler, oval or round resonator are all types of methods to improve the performance of a forward flow muffler. “Form and content” can make it quiet.

For example, craftsmen say that a square resonator installed in the middle of the path (the path for gases to escape into the aircraft) reduces noise much better than an oval or round one. And in general, it’s better not to use a round one, but to use an oval one as a last resort, since it has a larger volume of cans and, accordingly, a quieter sound.

Before thoroughly understanding what GHG is, you should remember the functioning of the vehicle exhaust system. Many motorists do not even suspect how many tasks it performs, although it does not seem so at first glance.

Of course, the main task of the exhaust is to remove gases. But an equally important function is to ensure timely and high-quality ventilation of the internal combustion engine cylinders.

Ventilation of the cylinders is carried out as follows. When the valves of one cylinder of the internal combustion engine are closed, a vacuum is created in the exhaust manifold. It moves through the system at high speed, and, having been reflected from obstacles, returns to the collector. At the moment the gases leave the cylinder, a reduced pressure is created here, which promotes better ventilation and purge.

Among other things, the exhaust system (ES) is designed to combat noise. This is what the muffler is designed for.

Compared to a conventional standard muffler, the PG does not have many separate sections inside. Accordingly, it has a more simplified design. It is this fact that allows craftsmen to make it at home or in the garage.

But is it even worth it for an ordinary motorist to change the standard muffler to a PG one? Certainly not. If he does not prefer active driving, does not intend to use the car for sporting purposes, does not have complexes about a “gray” car that does not stand out from the general traffic flow, then he should not carry out modernization.

On the contrary, if the bassy and thoroughbred roar of the engine resonates in the soul of the car enthusiast, then the installation of direct flow must be carried out. Moreover, this gives many advantages of the following nature:

As for the disadvantages of modernization, these are:

Do not confuse forward flow with a muffler. The fact is that the entire exhaust system is called direct flow, and in most cases only part of it is subject to modernization - the muffler.

Why and how often is it necessary to change the VAZ 2107 muffler?

The exhaust system of a car, despite its relatively simple design, performs many functions. The main ones are:

• removal of fuel combustion products;
• significant reduction in exhaust sound level;
• maintaining air balance with the intake system;
• ensuring effective cleaning and ventilation of cylinders.

Muffler VAZ 2107

experiences enormous loads like no other part of the car. First of all, constant temperature changes have a destructive effect on the metal, which actively destroys not only the protective paint and varnish coatings, but also the structure of the metal itself.

Gases heated to a high temperature literally “eat up” the internal filling of the muffler

, mixing with water condensate and oils, dissolve the metal walls, forming through corrosion.
the muffler elements are also adversely affected by moisture, road sand and gravel; salt solutions in winter intensify the decomposition process.
As a result, after some time the driver can observe under the bottom of the car the pitiful remains of what was once called a muffler. Whether we like it or not, the muffler of a VAZ 21074 or any other model will have to be changed periodically. To the question of how often should you change the muffler , every car enthusiast must find the answer himself.

The service life of an exhaust system, like many others, depends on factors such as:

How to make the exhaust quieter: instructions for creating a quiet muffler

Four factors influence the sound of a car's exhaust. The first and largest engine size. The larger the engine displacement—usually measured in liters or cubic inches—the greater the power output. Assuming the engine remains the same, muffler type and design, exhaust piping, and exhaust tip style may all be modified or replaced to directly affect your vehicle's overall sound profile. Replacing exhaust system components with components designed to increase exhaust power without muffling the sound will make the exhaust sound louder.

Replacing the VAZ 2107 muffler - procedure

An inherently simple procedure can take a lot of effort and time. Before installing a new muffler, you must remove the old one. To do this you should:

• install the car on an overpass or above an inspection hole;
• prepare a set of tools, ensure good lighting under the machine;
• The muffler is connected by a pipe to the resonator pipe in front of the rear axle. The ends of pipes with a slot and a male-female connection are tightened from the outside with a coupling;
• Corrosion under the influence of lubricant and temperature can solder the joints so much that it becomes very difficult to remove them. It is better to moisten the pipes at the junction and the coupling in advance with a solution that corrodes corrosion. For this purpose, as a last resort, brake fluid or used oil is suitable.

The procedure for replacing the muffler is as follows:

• the crimp coupling is untwisted or cut off using a cutting tool (grinder) (in this case, a new coupling should be on hand);
• use a thin chisel or screwdriver to bend the flared edges of the pipe;
• the muffler is disconnected from the resonator (if it comes out tight, you can help yourself with a hammer by tapping on the pipe);
• hanging pillows are detachable. By the way, when buying a muffler , it is advisable to buy three suspension rubber bands (two in the center and one at the rear).

After this, the old muffler is in your hands and you can install the new one in the reverse order.

Option 1. Remaking the forward flow from an old muffler

The process of installing a direct flow with your own hands takes place in the following sequence:

• We dismantle the used car muffler and use a grinder to make a cut in the intermediate “muffler” (resonator) along the entire length of the product, thereby creating a “cover” that covers the internal structure of the resonator. The elements of the device include 3-4 perpendicularly located stiffening ribs and 2 pipe sections towards each other;
• We cut out all the components in the resonator tube, leaving some surfaces for tackling a new weld. Next, we cut the pipe with a radius of 26 mm, cut it to a distance equal to the length between the ends of the cut pipes in the resonator device;
• Then we make longitudinal cuts at an angle in this section of pipe in increments of 1.5-2 cm (you can drill a large number of holes using an electric drill) so that you get a herringbone pattern. Using welding, we attach this element to the cut parts of the pipes in the resonator and fill the internal cavity with metal sponges;
• After the operations, we install the cut cover back by welding. At the end of the work, we cut off the tail part of the “silencer” (from the cut of the resonator to the place where the exhaust gases exit externally). Using welding, we attach a section of the same pipe about half a meter long, after which we process it, applying a varnish and paint coating to counteract corrosion.

Read more: How to check the cylinder head when purchasing

How to replace the muffler of a VAZ 21074 and other modifications of classics

Very often, car enthusiasts, seeing in the title of the article that the make of the car does not exactly match what is indicated in the registration certificate, continue to search for instructions. VAZ cars are charming because they differ from each other for the most part only in appearance, but the internal structure is completely identical.

It doesn’t matter what kind of car is in the garage: 2105, 2104, 2107 or 21074 - their exhaust system is completely the same. Having studied the repair instructions for one car, you can safely begin repairing another classic model.

Recent Entries

BMW 530e Hybrid revised for 2021

The BMW 530e PHEV has been updated with a new battery, improved efficiency, lower emissions and increased electric power range. The hybrid BMW 530e was

Watch a plane crash land on a public road, caught on police dash cam

Starman Adventures Is a Big Hit Among Teslas - SpaceX Fans

New deal offers drivers a free car - life-saving brakes for drivers up to £1,600

Categories

Test Drive

Ferrari Portofino 2019 review

Ferrari Portofino. this is a super stallion that you will ride every day Maximums Spectacular gearbox with excellent shift mechanics