home › Fuel system › Exhaust pipe diameter vaz 2107 injector

Exhaust pipe diameter vaz 2107 injector

If, while driving your "seven" with an injection engine, you suddenly start to hear a roar on the gas supply, most likely the matter is in a failed muffler.

As a rule, problems arise when unsoldering components, moving the pipe and fasteners away from the resonator. Also, the pipe can “get jammed”, which will reduce the power of the car and disrupt the gas exhaust mechanism. This indicates that the device needs to be replaced.

Replacing an old muffler with a new one

The functions that the VAZ 2107 muffler performs are as follows:

Making your car run quieter. This is necessary because the process of burning gasoline in air causes sound vibrations of various frequencies. The considered part of the VAZ 2107 (injector) is equipped with special chambers that absorb these sound vibrations, turning them into thermal energy (which causes heating of the components).
Removal of combustion products. Prevents ignition of a mixture with a high content of carbon dioxide.

Device

The muffler is part of the exhaust system. Its complete structure is as follows:

an exhaust manifold. Through it, gases penetrate into the "pants";
"Pants" (receiving pipe). They are separated from the collector by a special gasket that tightly holds the mount;
pipe. Which is attached to the gearbox with a bracket;
additional resonators. They are attached to the main muffler and exhaust pipe with clamps. Form an additional muffler;
main muffler. It is fixed behind the bottom of the car to prevent the transmission of vibrations to the body;
exhaust pipe.

VAZ 2107 (injector) is equipped with a part that is shorter than the similar 2104 due to the length of the body itself.

Silencer device VAZ 2107

Product types

For a domestic brand, you can buy the following types of mufflers:

assembly model "Izh-Auto", which is suitable for VAZ 2104, 2106 and 2107;
a model for a sedan body, which is suitable, in addition to the VAZ 2107, on varieties 2101, 2103, 2105 and 2106.

The following types of exhaust systems are on the market:

stamp-welded. Two metal parts of the can of the product are stamped, welded and attached to the pipe. Initially, exhaust systems were made in this way, but then the more reliable sunset method came to replace;

Muffler for VAZ 2107 - stamped

sunset. Provides for wrapping sheet metal around the muffler. Despite the reliability of the method, factory parts are only made by the first method, so you can buy sunset exhaust systems separately.

Silencer for VAZ 2107 - sunset

Withdrawal process

In the process of removing an element of the exhaust system from the VAZ 2107 (injector) for its subsequent replacement. You will need the following tools:

key for 13 (horn-loop type);
ratchet or collar;
deep heads for 13 and 10;
Bulgarian;
flat screwdriver (can be replaced with a chisel);
pliers;
hammer.

To figure out how to remove the muffler from your VAZ correctly and replace it. Please read the following instructions carefully:

install a car over a viewing hole or on a flyover;
unwind (cut off with a grinder) the crimp sleeve;
using a screwdriver or a thin chisel, bend the flared ends of the pipe;
using a hammer with which you will knock on the pipe, separate the muffler from the resonator;
unfasten the hanging cushions.

After that, the product is freely removed for replacement with a new one, which is installed in the reverse order.

Please note that the connection of the muffler pipe to the resonator pipe is in front of the rear axle. The pipe ends with slots and female-male fasteners are pulled together with a coupling. Removal of the product can be complicated by corrosion, which develops under the influence of temperatures and lubrication.

For this reason, pre-moisten parts with corrosion with anticorrosive agent (engine oil or brake fluid will also work). If you plan to install a new muffler, it will be useful to purchase new suspension rubber bands (1 for the rear and 2 for the center position).

Let's see what the muffler consists of.
In the photo above:

cushion bolt (1)
muffler mounting cushion (2)
main muffler (3)
belt on which the muffler is suspended (4)
clamp bolt (5)
clamp securing the main muffler (muffler) to the resonator (6)
second clamp bolt (7)
clamp that secures the resonator to the “trousers” (8)
nut that secures the exhaust pipe to the exhaust manifold (9)
stop plate (10)
trouser pad (11)
downpipe (pants)(12)
resonator (13)
clamp bolt that secures the exhaust pipe (14)
clamp securing the exhaust pipe (15)

Each owner of a VAZ 2107 car has to replace one or more parts over time exhaust system. The cost of replacing one part is not high, but you can save money by doing this work yourself.
Repair does not require special tools or special skills, a grinder and a “liquid key” (WD-40 or its equivalent) will come in handy. The figure above shows how the VAZ 2107 muffler is arranged, replacement is the next step.
For your information:

The exhaust system of the VAZ 2107 with a carburetor consists of downpipe(trousers), main and additional mufflers;
The pants flange on the VAZ 2107 is attached to the exhaust manifold by means of four studs. They are screwed with brass or copper-plated steel nuts.
They are unscrewed in pairs and fixed with special locking plates;
The articulation of the collector with the intake pipe is sealed with a reinforced metal-asbestos gasket. Pants are additionally attached with a clamp to the gearbox bracket;
The VAZ 2107 resonator consists of front and rear mufflers. The front muffler tube is put on the pants, and the rear one is inserted into the main muffler tube.
At the joints, they are fixed with clamps;
The main muffler is suspended from the brackets on the bottom of the body with two rubber straps and a cushion.

It is not difficult to understand which part is out of order - we drive into the overpass or inspection hole, start the engine. Usually, the muffler itself burns out most often, because it is inside it that moisture accumulates and it rots.
The resonator breaks less often because no water condensation occurs in it, as the vapors are blown into the main muffler. The life of the exhaust pipe exceeds the life of other parts of the exhaust system at times.

Attention: Any work related to the replacement or repair of the exhaust system must be carried out only after waiting for the complete cooling of all its parts.

List of tools:

Key for 13 (rozhkovo - cap);
A collar or a ratchet;
Heads for 10 and 13 (deep);
Wide flat screwdriver or chisel;
Hammer;
Pliers.

VAZ 2107 muffler replacement

It is necessary to change the muffler in a certain sequence. And you need to know this.
So:

The muffler for the VAZ 2107 is replaced at a viewing hole or overpass.
It is attached to the resonator in front of it. rear axle. The connection is crimped with a metal clamp, which ensures its complete tightness.

First remove the clamp

Then we try to pull the muffler flare off the resonator flare with our hands, this does not always work. It is recommended to use a chisel or a flat wide screwdriver.
Using a screwdriver, we bend the flaring petals, then remove the muffler. If it doesn’t work out, we use the “liquid key”.
We cut off the “petals” with the help of a grinder, if the “liquid key” did not help either. When cutting the petals, it is important to be careful not to snag the resonator tube to avoid cutting through the exhaust damage.
After disconnecting the muffler, remove it from the suspension belts and pillows, install a new one, in the reverse order.

We attach a new plug to the resonator so that the resonator pipe goes into the muffler flare until it stops.
Then we crimp the connection with a clamp.
The replacement of the rear silencer VAZ 2107 is completed.

Instructions for replacing the resonator

Since the resonator on the VAZ 2107 is not attached to the body, it is necessary to hold it when replacing it so as not to deform the front pipe.

Tap the pipe connections and clamps with a hammer, as in the previous case.
First of all, we disconnect the resonator from the muffler, then from the “pants”. In connecting the resonator and the receiving pipe, we act according to the same scheme, bend the petals, use a “liquid key” or a grinder as a last resort, and very carefully.
At the point of articulation of the resonator with the muffler, the situation is more complicated. When the pipes have boiled, we cut off a piece of the pipe coming from the resonator, then we take out the rest of the flaring with a gas wrench or pliers.
Usually in this place the pipes stick tightly, when it is impossible to separate them, we also change the muffler
We install a new resonator, observing its original position. If you install the resonator incorrectly, it will start to knock on the bottom of the body, or touch the bumps in the road.
It is desirable that the resonator pipe running from the receiving tube to the tank be parallel to the ground
In the same way, we align the connection of the resonator with the muffler so that the tank is parallel to the ground and does not knock on the body

We change the “pants” (downpipe)

When replacing VAZ 2107 pants, be sure to stock up on a new gasket between the pants and the manifold, because it collapses when removed. It is also recommended to replace the nuts that fasten the pants to the manifold.
So:

First, disconnect the pants from the resonator. If there are problems, as in the case of the resonator, given the fact that the pants are replaced less often than other parts of the muffler, and the heating temperature of the connection during engine operation is quite high, we use a grinder.

After removing the resonator, unscrew the four nuts securing the exhaust pipe to the manifold.

Be careful not to rip off the studs to avoid unnecessary work to replace them. It is recommended to immediately process them with a “liquid key”, otherwise we cut off the nuts using a grinder
Working as a grinder, we cut the nut obliquely so as not to damage the thread of the stud. Then just knock it down with a chisel or a flat screwdriver
Installing pants, replace the old gasket, then screw them to the exhaust manifold
We connect the pants with the resonator, crimp the flare with a clamp.

If, after replacement, the exhaust system is raised under the bottom or sags:

The first is that the downpipe and resonator are fixed at the wrong angle. Just turn the resonator and achieve the correct position of the system
Second - the engine mount sagged. Change engine mount.

Fasteners

Separately, about fasteners - suspension pads and clamps. They are recommended to be changed at each change of any part of the exhaust system.
So:

If the clamp looks like new at first glance, do not forget about metal fatigue. The thread “floats” over time, the clamp no longer holds the connection tightly, the exhaust gases cut through and create additional noise.
You will have to crawl under the car to change one collar, and this, you see, is extra work.
A simple inspection is often not possible to assess the level of wear of the cushions and rubber belts. When reinstalling old cushions with rubber belts, you risk losing the muffler as a result of their breakage.
Considering that the price of a pillow or a belt is much less than the price of a muffler, it is better to replace them immediately in order to avoid unnecessary costs.

Replacing the muffler with a vaz 2107 injector

Differences in the exhaust system of VAZ 2107 cars with injection engines:

The exhaust pipe of the muffler already has a flange for attaching it to the converter.
The presence of a welded sleeve in the pants, into which a lambda probe (oxygen concentration sensor) is installed.
Installed catalytic converter with an iron carrier, instead of an additional front muffler.
An additional muffler is installed, with a flange at the end of the front pipe.
To compensate for bending loads during engine vibrations, the converter flange is pivotally attached to the pants flange, through a toroidal metal-graphite ring and spring-loaded bolts.
The converter gets very hot during engine operation, to protect the body from overheating and ignition of the upholstery, a heat shield is located above the converter.

Replacing the muffler VAZ 2107 with injection engine, is not much different from replacing the muffler of a carburetor engine, if something remains incomprehensible to you, we recommend watching the video.

As some drivers joke, the muffler is one of those parts that "do not affect speed." Indeed, getting to the garage without a muffler, if it happened, is permissible. But everyday comfortable and safe operation of the car is impossible without this important structural element.

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

Exhaust gases escape from the engine cylinders at high pressure and with a lot of noise. The muffler receives and slows down the gases, converts their kinetic energy into thermal energy, smooths out the pulsations and muffles the sound, then releases the attenuated exhaust into the atmosphere.

Thus, among the main functions of the silencer:

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

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

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

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

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

Innokenty Kishkurno

Replacement and repair of the muffler for VAZ 2104-2107 cars

To replace the muffler you will need:

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

Removal and installation of the muffler

To dismantle the "glushak", repair it, and then return it to its place, follow the following sequence of actions:

Drive the car into a viewing hole. Stop the engine, turn off the ignition. Wait for the exhaust manifold to cool down.
Unbend the muffler suspension rubber hooks.

Use a screwdriver to unbend the hooks of the rubber straps on which the muffler is suspended.
Unscrew the exhaust pipe from the rubber cushion.

Unscrew the exhaust pipe from the rubber cushion with a wrench
Loosen the pipe clamp connecting the pipes of the main and additional muffler.

Loosen the clamp between the pipes of the main and additional muffler
Move the clamp aside, remove the main muffler.
Loosen the collar between the intake pipe and the resonator.
Carefully knock the resonator out of its mount by tapping it through the gasket with a hammer.

Carefully knock the resonator out of its mount by hitting it with a hammer through the wooden spacer.
Unscrew the downpipe from the gearbox.

Unscrew the downpipe from the gearbox bracket
Bend the stoppers, unscrew the intake pipe from the manifold.

Carefully bend the stoppers and unscrew the exhaust pipe from the manifold
Pull the pipe off the studs.

Install the new muffler in the reverse order of removal. When doing this, do not use a used gasket. Treat pipes at the joints with clamps with graphite grease before assembly.

Video: replacing a VAZ 2107 muffler in a garage

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

Innokenty Kishkurno

How are knock and muffler position related?

If the muffler suddenly began to knock on some places in the car, find the source of extraneous sounds. Usually the reason lies in the stretched rubber mounts. After replacing them, the knocking will stop.

Sometimes a knock appears after work related to the removal of the muffler. In this case, extraneous sounds are the result 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 one into the other.

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

In similar ways - by replacing the rubber bands and correcting the position of the joints - sagging mufflers are “treated”.

Video: repair of a sagging muffler VAZ 2106

muffler repair tips

The muffler of "classic" VAZ cars, according to the manufacturer's recommendations, cannot be repaired. In the event of a malfunction of any element of the exhaust tract, the part must be replaced with a new one.

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

The occurrence of "fistulas" is evidenced by a change in the sound of the engine and the appearance of smoke from under the car. To troubleshoot, install the machine on a flyover, inspect the elements of the exhaust system.

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

Unscrew the pipe fastening to the gearbox.
Unscrew the nuts securing the intake pipe to the manifold.
Together with an assistant, pull the “pants” off the studs, while simultaneously rotating the bend of the resonator tube.
Replace the gasket, install the pipe in place, tighten the fasteners.

Replacing a burnt muffler gasket eliminates extraneous sounds from the motor

A welded silencer usually lasts less than a new one. But welding is cheaper than buying. Usually, if it is necessary to repair the 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 a cutting disc for metal;
metal brush;
sandpaper;
heat-resistant paint for metal.

To repair the muffler, follow this sequence:

Remove the muffler from the vehicle.
Visually determine the location of the fault and the extent of the damage.
If there is a significant hole in the muffler body, evaluate the condition of the internal parts. It is possible that repairing the outer surface will not bring the desired restoration of the functions of the muffler without replacing the insides. In this case, it is advisable to turn to professionals or simply change the faulty part for a new one.
Cut out the burned area. From the workpiece, make a patch larger than the damage. Weld the patch over the hole with a solid seam.
In case of damage at the joints of the pipe and the muffler body, cut out the defective section, replace the damaged part of the pipe, weld the repaired pipe to the muffler with a continuous seam.
Clean the repaired muffler from dirt and rust, paint the part with two layers of heat-resistant paint.

Photo gallery: muffler welding

In case of damage at the joints of the pipe and the muffler body, weld the repaired pipe to the muffler with a continuous seam From the workpiece, cut a patch larger than the damage Pipe damage weld with a solid seam

Video: VAZ muffler repair 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.

The exhaust system of a car performs two useful functions at once: the release of exhaust gases, their partial cleaning, as well as reducing the noise level from the operation of an internal combustion engine. Today we will talk about such an important part as the resonator. Let's try to figure out why and how the replacement is performed.

The resonator of any car is an additional muffler that reduces the noise level of the engine. In addition to the main "can", the resonator, or as it is also called, the receiving pipe can be equipped with an additional one.

It should be noted that the resonator operates at high temperatures. It is on it that exhaust gases are supplied, which are under high temperature, which gradually lead the heat-resistant metal to great wear. In addition, the resonator on the VAZ 2107 is too close to the road surface, which causes mechanical damage to the exhaust pipe.

Ultimately, holes appear on the surface of the resonator, which disrupt its operation. Exhaust gases exit through these defects, creating an unpleasant engine sound that is not only unpleasant for others, but will certainly not leave indifferent traffic police officers. That is why a damaged resonator must be replaced immediately.

How to change the resonator for VAZ 2107 + Video

To change the resonator, you need to stock up on all the necessary keys, kerosene or WD-40, as well as a lot of patience and accuracy. The fact is that high temperatures cause the fasteners of the exhaust pipe to melt, which, as a result, makes it difficult to remove it. In addition, you will need either a flyover, otherwise it will be very inconvenient to change the resonator.

Many auto mechanics suggest applying sealant before installing an exhaust system. Do it or not - it's up to you. In any case, the reliability of fastening and sealing the exhaust system is limited only by the force that allows you to make a clamp.

That's all. It remains only to put rubber straps with hooks on the muffler and hang it to the bottom. This is how the muffler resonator is replaced on a VAZ 2107 car.

The exhaust system has an important impact on the performance of any vehicle. Therefore, it is important to have a clear idea of how this system works. This article will focus on the device, repair and tuning of the exhaust system of the car "VAZ-2107", as well as VAZ 2105, VAZ 2106, VAZ 2104.

The device of the exhaust system "VAZ-2107"

In general, the exhaust system of domestic cars is quite simple. Exhaust gases from the engine enter the downpipe, also known as the "pants". Between the exhaust valve of the engine and the intake pipe there is a special gasket that ensures tightness and does not allow exhaust gases to escape under the bottom of the car. Some car owners use a corrugation instead of a gasket, which reduces vibration, however, to install such a modification, all related components have to be adjusted in size. It should be noted that many experts advise leaving the factory equipment of the car, arguing that AvtoVAZ designers deliberately provided for a gasket, not a corrugation.

The exhaust pipe is attached with a bracket to the gearbox and connected to the front additional muffler (resonator) through a clamp. After the front muffler comes the rear, also optional. The presence of such components reduces the level of vibration and noise, and also performs protective function. Behind the rear additional silencer is the main silencer, which is attached to the bottom of the car with a cushion.

As part of the exhaust systems of the injection "sevens", which comply with the Euro-2 standard, there is a catalyst.

Repair of the exhaust system "VAZ-2107"

The elements of the vehicle's exhaust system are located in close proximity to the road surface, and therefore are subject to wear and risk of breakage. It is not difficult to determine which part is out of order, you just need to drive onto the flyover and look under the bottom of the car. Most often, the main muffler fails. This is due, first of all, to the fact that it is in this component that moisture most often accumulates, as a result of which the metal rusts. Do not forget about the high temperatures that the exhaust system is exposed to during the operation of the car. All parts located under the bottom of the car are also adversely affected by chemicals sprayed on the road surface in winter time of the year.

As you might guess, the most common problem with the exhaust system that car owners face is a violation of the integrity of the main muffler. Such a malfunction is visible to the naked eye, and in very advanced cases, the picture that appeared before the car owner looks like this:

The exhaust system of the car, brought to such a state, needs to be replaced. But due to the fact that the parts are quite expensive, you can delay the need for replacement by making repairs. To repair the seam between the exhaust pipe and the tank, you should use a welding machine and rods that will fill the gap. Pieces of wire can be used as rods.

Having achieved an even and tight seam, remove the remaining pieces of slag and, if possible, polish the repaired area to get rid of cracks and “folds” where moisture can accumulate.

To repair a rusted tank, you should first use the grinder, removing the rusted areas and giving the resulting holes correct forms. Over these holes, sheet metal will be welded with an overlap of about one and a half centimeters. After welding, again, excess slag should be removed and the seams should be polished. In the absence of a welding machine, the issue can be solved with the help of liquid glass and fiberglass, which will act as a “patch”.

Optional mufflers can be repaired in the same way. When repairing an exhaust system, it is recommended that all gaskets and corroded fasteners be replaced. Sticky bolts can be cut off with a grinder, and the joints can be gently tapped with a hammer.

It is important to remember that the repair of the exhaust system is only a temporary measure, and the need to replace parts will still come sooner or later. Therefore, it is recommended to replace at the first convenient opportunity, even despite the rather high cost of parts.

Prevention of repair of the exhaust system "VAZ-2107"

In order for the exhaust system of the car to serve as long as possible, you should carefully monitor the condition of the muffler suspension and other elements. Otherwise, the muffler will begin to vibrate or even hit the bottom of the car or the road surface, which can lead to very sad consequences.

As noted earlier, the main enemy of any muffler is metal corrosion. That is why it would be quite advisable to use an anti-corrosion liquid, evenly distributing it over the entire internal area of the tank. Such a measure will allow you to add another couple of thousand kilometers without the need to re-repair or replace the exhaust system. It should be noted that components such as a catalyst or a muffler resonator heat up during operation of the car, which leads to burnout of the anti-corrosion fluid, and therefore this substance should be used only in the main muffler.

Tuning the exhaust system "VAZ-2107"

Many car owners, after a certain period of operation of the car, are thinking about the issue of modifying their “steel horse”. Tuning the exhaust system of a VAZ-2107 car usually comes down to reducing the back pressure of the exhaust gases. In other words, to slightly increase the power of the car, you should make sure that the exhaust gases leave the car as easily as possible.

In order to achieve the desired results, direct-flow silencers should be used. Straight-through mufflers allow gases to expand on their way to the main muffler, which reduces back pressure on the engine.

The position of the exhaust pipe also affects the exit of gases: ideally, it should be strictly opposite the entrance to the muffler tank. Some craftsmen use simple tools to change the position of the exhaust pipe with their own hands, but such an operation requires certain knowledge and experience.

However, with all your desire to improve the car, you should remember that any car is a lot of compromises that have already been taken into account by the designers of the plant, and therefore, when making global changes to the design, it is important to understand that the car owner carries out tuning at his own peril and risk.

You can also use the services of professionals who have the necessary knowledge and experience to successfully complete similar works. Incompetent intervention in the device of the exhaust system can lead to diametrically opposite desired results.

Popular in category: