You've probably heard such a slang and quite common word among car enthusiasts as VAZ 2114 pants. If you have no idea what it is, then everything is simple, it's just the exhaust pipe of the exhaust manifold.
The product is used to remove exhaust gases directly from the internal combustion engine. And it got its original name for the shape of the structure (one end of the pipe has a split and closer to the opposite edge smoothly flows into a single pipe) with the shape of the pants. This is how the popular name “clung” to the product.
From a design and reliability point of view, the most vulnerable point in the exhaust pipe is the sealing gasket at its connection to the manifold. Over time, the insulating element simply burns out or becomes deformed from exposure to high temperatures, especially since the thickness of the gasket metal is quite small.
Replacing the intake pipe gasket for a VAZ 2115 injector 8 valves
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I'm looking at the nuts that have to be unscrewed
Tell me what I need to buy in advance
wrap it overnight with a rag soaked in kerosene.
And then how to get to the garage? Will the sprinklers and locks be of any use if the pipe then warms up?
Is it recommended to apply graphite during reassembly?
By the way: what is this little ratchet? Can I give you a link so I know what to look for?
Take a gasket and new brass or copper-plated nuts
Can you tell me approximately how long?
The exhaust pipe gasket needs to be replaced, the following questions arise:
2. What else do you need to buy: 4 brass nuts, 4 M8x25 studs, anything else?
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Replacement options
If you want to ensure a minimum of problems with the gas exhaust system in the future, look for stainless steel products similar to factory ones, since the exhaust pipe circuit has poor anti-corrosion protection. The shelf life of the structure will depend on the quality of materials, so stainless steel will be the most profitable purchase. To select suitable components, focus on the diameter of the old pipes.
For new steel components, do not forget to purchase an additional metal-graphite sealing ring, and also update the VAZ muffler. A rubber gasket under a stainless steel system is also useful.
Why does a sports exhaust system not make sense for the VAZ 2114? There is information that special pipes and mufflers that provide direct exhaust exit can increase engine performance by 10-15%. This effect can only be observed in cars whose engines have at least 200 hp. With. power. For the sports update to be profitable, the engine power will also need to be increased. So this type of tuning is suitable for those drivers who want their classic 2114 to become a car for racing or high-speed driving on the highway.
Exhaust pipe laying for VAZ 2114 8 valves
Photo and video instructions for independently replacing the exhaust pipe of the exhaust system on VAZ 2113, 14, 15 cars.
To carry out the work of replacing the intake pipe, you need an overpass or inspection hole.
- Unscrew the catalyst from the exhaust pipe.
Using a 13mm wrench, unscrew the 2 nuts securing the clamping bar and remove it from the bracket.- Using a 13mm wrench, unscrew the fastening of the bracket to the cylinder block.
- Remove the bracket from the car.
- Using a screwdriver, bend the edges of the locking plates of the nuts securing the exhaust pipe to the exhaust manifold.
- Using a 13mm socket wrench with an extension, unscrew the 4 nuts securing the exhaust pipe to the exhaust manifold.
- Remove the exhaust pipe from the car.
- Remove the old gasket from the studs.
- Reinstall the exhaust pipe in reverse order. Before installation, replace the gasket with a new one.
Causes of breakdowns of the VAZ2114 exhaust pipe
Since the unit is attached directly under the bottom of the car, and our Russian roads leave little to be desired, the most common occurrence is driving into a hole (even worse if it is hidden under a puddle) with subsequent damage to both the exhaust pipe itself and the place where it connects to the muffler. The second most common reason is the vulnerability of the gasket itself. The fact is that it is constantly exposed to a strong influence of hot exhaust gases, therefore, in an aggressive environment, the destruction of the product (burnout) accelerates. “Please note that if you have diagnosed wear or damage directly on the pipe itself, you should replace not only the unit that is damaged, but also the sealing gasket. This approach will ensure the best durability and wear resistance of the entire pipe section, and the old gasket will not become a bottleneck in the entire exhaust pipe.”
Video on replacing the exhaust pipe:
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Design and purpose of the exhaust gas system
The gas exhaust system of the VAZ 2114 consists of various functional parts. Folding into one solid chain, it contributes to the normal operation of the car. The system regulates the release of harmful chemicals concentrated in exhaust gases into the surrounding atmosphere. Schematically, this system looks like this, as shown in Fig. 1. The exhaust system of the car model in question includes the following main functional components.
- Exhaust manifold VAZ 2114. Serves to combine gas flows emanating from each cylinder into one common pipe. To withstand increased dynamic loads, the collector is equipped with the most rigid and durable fastening.
- Catalyst. This component of the system significantly reduces the level of toxicity of exhaust gases. To do this, highly toxic emissions are converted into less toxic gas impurities using a chemical reaction.
- Reception pipe. Designed to connect the VAZ 2114 exhaust manifold and the catalyst.
- Resonator. By means of several “acoustic mirrors” built into the body, it reduces the level of noise that occurs during strong exhaust.
- Silencers. Even more than the resonator, they enhance the noise absorption of the entire exhaust system of the VAZ 2114.
- Corrugation. Thanks to its elastic structure, it suppresses vibration transmitted from the engine to the exhaust system.
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Exhaust system malfunctions and their elimination
Due to increased pressure and very high temperatures due to intense fuel combustion, the muffler quite often fails. The level of performance of individual elements and the entire exhaust gas system of the VAZ 2114 is significantly affected by the following unfavorable technological factors:
- rapid heating to very high temperatures and possible overheating of the exhaust system;
- frequent sharp fluctuations in temperature - from heating to rapid cooling;
- permanent vibration during engine operation;
- frequent impacts and mechanical damage to the VAZ muffler;
- frequent pollution;
- scratches and chips caused by small hard particles of the road surface;
- development of internal and external corrosion;
- lack of means that effectively protect the metal surfaces of the VAZ 2114 exhaust system.
All of these factors, to one degree or another, affect the safety and performance of the exhaust unit. If the integrity is broken in any place, a gas flow immediately rushes into the resulting fracture or fistula. Due to its speed and pressure, it quickly expands the emergency hole. And then the malfunction makes itself felt - the system begins to loudly “growl” and clap, exhaust gases come out at the wrong point, and the muffler knocks. In such conditions, it becomes almost impossible to operate the car.
It should be borne in mind that in addition to loud and sharp bangs, defects in the exhaust system of the VAZ 2114 can also affect the operating mode of the engine itself. Therefore, in some cases it will be necessary to carry out repairs of system elements, thanks to which you can temporarily do without completely replacing the entire assembly.
Diagnosis of breakdowns, which precedes restoration operations, is facilitated by the fact that the occurrence of defects is usually accompanied by an unpleasant strong grinding and roaring sound under the car bottom. The owner of the car remains to carefully examine the entire chain and determine the location and nature of the malfunction. Most often, breakdowns occur in the following components.
- Lambda probe. It is an electronic sensor that analyzes the composition of emitted gases in order to ensure optimal combustion of automobile fuel. As a rule, after 100 thousand kilometers of the car, the metal analyzers included in the sensor lose their working properties. Usually in this case, the exhausted lambda probe is not repaired, but replaced with a new one.
- Corrugation. Its elastic hose, taking on engine vibration, stretches over time due to such mechanical vibrations, which negatively affects the mitigation of shaking. If the old corrugation fails, simply replace it with a new one.
- Resonator. This element of the VAZ 2114 exhaust system can periodically burn out under the influence of high temperatures of fuel combustion. Most often this is the result of using a product made of low-quality thin stainless steel. The best way to fix the problem is to replace the burnt element with a new one. However, as a temporary measure, it is also possible to weld the burnout area with a special electrode.
- Connecting gaskets. A sign of their failure is the appearance of strong vibration in the exhaust system area when the engine is running. To eliminate loud rattling, most often it is enough to simply replace the gaskets.
Exhaust system design
All parts of the gas exhaust system of the VAZ-2115 car can be easily disassembled, which allows you to replace them yourself, without the involvement of specialists. Main parts of the gas outlet unit:
- Bracket mounting of the exhaust pipe.
- A gasket located between the pipe and the intake manifold.
- The clamping part of the bracket (represents a plate).
- Pipe for receiving gases from the engine.
- Metalgraphite gasket in the form of a ring.
- Catalyst.
- Rubber mounting pad.
- First (additional) muffler.
- Main muffler.
- Rear mounting cushion.
- Fastening clamp (often called brackets).
Design of the VAZ 2114 exhaust gas system.
| 1 | exhaust pipe mounting bracket |
| 2 | pad |
| 3 | bracket clamp |
| 4 | additional muffler |
| 5 | muffler suspension cushions |
| 6 | main muffler |
| 7 | muffler pipe connection clamp |
| 8 | exhaust pipe |
How to notice a node malfunction
It is not difficult to determine that it is time to change parts of the exhaust system on a VAZ-2115 with an 8-valve engine.
Even a novice car enthusiast can cope with this, since the main signs are the appearance of a strong smell of exhaust gases in the cabin and an increased noise level. Most often, faults are hidden in the additional or main muffler, as well as in the gaskets between the connections, which can burn out over time. The classification of the most frequently occurring faults is as follows:
- mechanical damage to the muffler;
- burnout of gaskets;
- corrugation burnout;
- loosening of connections at joints;
- cracks in the system pipes.
Problems can be spotted by visual inspection. Experienced specialists recommend removing gas exhaust units for these purposes. This way you can examine them from all sides and notice the slightest damage. After you conduct a visual inspection of the system, you need to buy spare parts and begin repairs. It's easy to do it yourself.
If there are no external problems, you can try replacing the internal resonator. This repair method will only help those who know how to handle welding equipment.
Small burns and holes can be covered with sealant. Just pay attention: it must easily withstand temperatures up to 1000 degrees. Before applying the composition, it is necessary to thoroughly clean and degrease the surfaces.
Is it possible to repair the VAZ 2114 muffler?
Before purchasing a new muffler for your car, you need to evaluate the possibility of repairing it. Experience shows that these parts are quite repairable. If you decide not to rush into purchasing an expensive part, you need to remove the muffler, clean it thoroughly and carefully inspect it. The damage can be significant, including a pipe falling off the muffler barrel or in the form of cracks and small burnouts.
Repair of muffler VAZ 2114
The nature of the repair also depends on the results of the inspection, but in any case, having decided to repair the VAZ 2114 muffler. To do this, you need to purchase a muffler repair kit from a car shop.
If the damage is quite serious, and the metal from which the muffler is made is still strong enough, then it is recommended to weld the burnouts. A semi-automatic machine is used for welding; a metal plate up to 2 mm is used as an overlay. The seams are made thick to avoid burnout.
Small cracks are sealed with silicone-based sealant that can withstand temperatures up to 1000 degrees. You can cover it with fiberglass, filling it with epoxy resin with special, heat-resistant additives. With this repair option, after installing the muffler, you need to start the engine and idle for an hour to allow the epoxy to set.
The procedure for removing the muffler for repair and its subsequent installation is similar to the procedure for replacing it.
Muffler replacement
Using the example of replacing this component, we will show that it is not difficult to repair the exhaust system and dismantle its components. To work, you will need to install the car in the garage above a pit or drive it onto an overpass. Disassembling this node is not so difficult:
- disconnect the main and additional muffler;
- bend the hooks of the hanging straps;
- remove the brackets;
- remove the main muffler, which is mounted on the cushions.
The exhaust system of the VAZ 2115 car is a complete analogue of the exhaust system of the VAZ 2114 car (Repair of the VAZ 2114 exhaust system). The main elements of this system are: a downpipe, a catalytic converter, an additional muffler and a main muffler.
Like the VAZ 2114, the exhaust system of the VAZ 2115 is equipped with an oxygen sensor, which is installed in the exhaust pipe of the exhaust system. With its help, automatic adjustment of the composition of the fuel-air mixture supplied to the engine cylinders is ensured.
To minimize the influence of vibrations on the car body, the main and additional mufflers are suspended due to rubber suspension cushions.
Silencer - purpose, device, operation
An important element of the exhaust system is the muffler; operating a car without it is impossible. As a rule, the muffler is located at the rear of the vehicle and, in conjunction with the exhaust system, serves to remove harmful gases from the engine, bypassing the vehicle interior.
Car mufflers are made from stainless, aluminized and regular black steel. Stainless steel “silencers” are practically not available for sale due to their high cost and long service life (their service life is 10–15 years). Aluminized mufflers are installed on VAZ 2114/2115. They are common in the domestic and European markets (service life 3–7 years). Regular black steel mufflers are cheap substitutes and last only a few months, so are rarely used.
Replacing the main muffler on a VAZ 2115 car
To complete this work we will need two “13” keys and a metal brush. We drive the car onto an overpass or inspection hole. Be sure to wait some time until the system elements have completely cooled down.
Using a metal brush, thoroughly clean the mounting clamp, with which the inlet pipe of the main muffler is connected to the outlet pipe of the additional one. Then we treat the bolts holding the clamp together with a substance that corrodes rust. For example, VD-40 can be used as such a product.
Now you can unscrew the bolts: with one key we hold the nut from turning, and with the second we “influence” the bolt itself. It should be noted that in case of severe sticking and corrosion, it may not be possible to unscrew the bolts. In such a situation, they can be cut using a grinder. Such dismantling must be carried out with extreme caution so as not to damage the flanges of the exhaust pipe of the additional muffler.
After the clamp is removed and the muffler pipes are separated, slightly lift the main muffler and remove it first from the rear and then from the front rubber hangers.
Installation of a new muffler is carried out in the reverse order of removal.
REPAIR OR REPLACEMENT
Diagnostics has detected one or more small cracks in the resonator housing or main muffler. In this case, replacing them with new parts is not economically profitable. You can make repairs yourself. To do this, purchase a muffler repair kit: it includes rubber shock absorbers (the pipe is suspended on them) and clamps (for connecting the pipe joints). They can be purchased in several types.
VAZ 2114 mufflers can be repaired in the following ways:
- Buy any heat-resistant sealant and coat the burnout cracks with it, namely cracks, not large holes. The next step is to clean the body of dirt, paint and rust. After this, the cleaned area is degreased and a sealing layer is laid on the area to be repaired;
- Buy a repair kit with heat-resistant tape and binding wire. The part to be repaired is again prepared by analogy with the first method. After this, carefully wrap the body with tape and tie it with wire. The burnt area heals itself as the engine operates;
- Repair using cold welding. First of all, prepare cold welding for use. Next, you need to thoroughly clean and degrease the damaged area. After this, the damage can be repaired by welding (cold).
Replacing an additional muffler
As practice shows, the additional muffler fails (“burns out”) much less often than the main one. Nevertheless, this happens, and therefore we consider it necessary to describe the process of replacing it. To complete this work we will need two keys for “13” and two keys for “17”.
First of all, unscrew the bolts securing the resonator to the catalytic converter. We pull out the bolts and disconnect the pipes.
Then we need to disconnect the additional jammer from the main one. To do this, unscrew the two bolts of the tightening clamp using two “13” keys. Remove the clamp and disconnect the pipes. Next, lifting the resonator, remove it from the rubber cushion and pull it out from under the car. If manually removing the muffler from the rubber clamps is problematic, pry them off with a screwdriver.
Do-it-yourself exhaust system and muffler repair
As a rule, the main reason for muffler failure is that it burns out and holes appear in the housing. Also, the enemy of the muffler is corrosion, mechanical damage, etc.
Moreover, even if the muffler 2115 or 2114, as well as other cars (both domestic and foreign cars) looks normal on the outside, it is also destroyed on the inside. When the engine is running, you can hear ringing and rattling in the muffler, especially when revving the engine. If the problem is not in the suspensions, then this indicates the destruction of the internal partitions.
Occasionally, mistakes can be made when repairing the exhaust system, that is, a knock appears after replacing the resonator or exhaust pipe. In this case, you need to make sure that gaskets, connections, etc. are installed correctly.
For example, pipes are connected using a clamp, while there is a spherical ring inside. This connection is not flexible. In this case, you can change the angle between the pipes, thereby changing the center of gravity. You can also change the slope of the pipe arc, moving it away from the fuel tank. In fact, with such simple manipulations you can already get the desired result.
- Let us also add that during operation, dirt may accumulate in the muffler. Over time, this soot and dirt clogs the muffler. In this case, the exhaust does not come out in full, there is no normal ventilation, and the car begins to “stupid” when accelerating.
Removing and installing the catalyst
Removing and installing a catalytic converter on a VAZ 2115 is a relatively simple task. The procedure itself is carried out in several stages:
1. Using keys “17”, unscrew the fastening of the catalyst to the exhaust pipe of the exhaust manifold. We take out the bolts and spring washers;
2. Place a suitable stand under the catalyst. The fact is that the catalyst on the VAZ 2115 car is not fixed with the help of any rubber hangers, and therefore, in order for it not to fall on your head, after unscrewing the fastening bolts, it must be secured somehow. This can be done either by installing a stand under it, or by temporarily securing it with wire;
3. Now unscrew the catalyst from the inlet pipe of the additional muffler and carefully remove it.
We install the new catalyst in the reverse order.
Common problems
The exhaust system of the VAZ 2115 and 2114 has one significant flaw - terrible anti-corrosion protection. Because of this, burnouts often form throughout the entire structure. This flaw has become a nightmare for inexperienced drivers. The moisture that accumulates inside the pipes destroys the metal, causing damage to the exhaust system. Another type of damage is ruptures of suspensions and channels.
This effect occurs when the catalyst fails and fuel droplets enter the system channels. When exposed to high temperatures, they ignite, which leads to fires and explosions inside the pipes.
Repairs after such damage are possible, but it makes no sense to “patch holes” by welding. Budget repair options will not work. You can replace individual parts of the assembly one by one, but this will bring little benefit. A complete redesign of the system and installation of new components will be required. But choosing the right parts is difficult. You can install pipes from a sports kit, but this will have almost no effect on the performance of the car. Therefore, the next task is to select a suitable set of pipes for upgrading the unit.
Tuning the exhaust system of VAZ 2115
Direct flow installation
In this case, everything depends on the financial capabilities, preferences and wishes of the car owner. If we talk about the most common option, it looks like this:
1. First of all, the exhaust manifold is replaced with a tuned “spider”;
3. Instead of the standard main muffler, a modernized one is installed - specially designed for the construction of direct-flow exhaust systems.
If you believe the statements of car owners, this kind of improvement allows you to increase the car’s power by about 7-10 hp.
Installing the "dragon language"
This type of tuning is usually chosen by those who, first of all, care about appearance rather than driving performance. In fact, the installation of the so-called “dragon tongue” does not bring anything useful other than spectacular effects. The essence of this modification is that the release of exhaust gases from the main muffler is accompanied by small fiery flashes and flames.
To implement this idea, you will need to purchase a special kit consisting of a special spark plug and an electronic control unit. You will also need electrical wires and a switch button.
The switch button is necessary to temporarily turn off several spark plugs, which will thereby lead to a higher saturation of the exhaust gases with gasoline vapors. In addition, this button will be used to briefly start the electronic unit, which will supply voltage to the spark plug, which in turn will ignite the exhaust gases.
An important point: you should remember that such tuning, if installed incorrectly, can lead to malfunctions in the vehicle's electrical equipment and disrupt the proper operation of the exhaust system. That is why, unless you have the appropriate skills and experience, it is best to have such a system installed by a qualified mechanic.
Briefly, the installation process is as follows:
1. The entire electrical system of the car is disconnected from the power source (the negative terminal of the battery is disconnected);
2. Power supply of the electronic unit is connected. In this case, the positive wire of the unit is connected either through a button or to the ignition switch. In the latter case, the flame will be released only when the ignition is turned on;
3. A system switch is installed. The installation location can be anywhere - the main thing is that the button is always at hand;
The candle is connected to the system and tested for functionality. An important point: when connecting the spark plug, it is very important that the high-voltage wire does not touch the elements of the exhaust system. Otherwise, its insulation may melt, which may result in a short circuit that will render the electronic control unit unusable.
The exhaust system of the VAZ-2114 is popularly called simply a “muffler,” which is not entirely true. People forget or don’t know, but the complex that makes up the exhaust system includes not only a muffler, but also other devices. The main purpose of the exhaust system is to remove exhaust gas outside the vehicle's dimensions, preventing it from entering the passenger compartment. It also suppresses the sound vibrations that the engine makes during operation.
Interesting!
Since the introduction of environmental standards, regulation and reduction of exhaust gas toxicity have been added to the functions of the exhaust system.
Features of the VAZ-2114 exhaust system
In all VAZ models, the exhaust system is almost identical. Differences can only be observed in the later versions of the system, which are equipped with a more complex catalytic converter design.
The muffler system of the VAZ-2114 with an injection engine includes:
an exhaust manifold. It is attached to the cylinder head through a gasket, so it is the first to take on thermal and dynamic load;
Reception pipe. With the help of a receiving pipe, exhaust gases enter the resonator;
Catalytic converter. Device for controlling the level of CO2 emissions into the atmosphere;
System functions and properties
In addition to removing exhaust gases, the exhaust system of the VAZ 2114 weakens the impact of sound vibrations that the engine emits during operation. The engine creates a lot of noise, and only thanks to the exhaust pipes can it be muffled.
The design of the unit consists of the following main parts:
- muffler for VAZ main;
- secondary muffler pipe;
- neutralizer (only in injection engine models);
- collector pipe;
- exhaust pipe;
- corrugation;
- resonator;
To maintain environmental standards, a catalytic converter was installed in engines with fuel injection through an injector - a device that helps reduce emissions into the atmosphere. The catalyst allows you to burn up to 95% of the fuel that enters the combustion chamber, thereby reducing the amount of combustion products and increasing engine productivity. Thanks to a set of sensors through the computer in the car, the neutralizer can regulate the amount of toxic substances in the exhaust gases. But at the moment this design is an outdated option and is practically not used in modern cars.
Diagnostics and replacement
The exhaust gas system of the VAZ 2114 signals problems with extraneous noise. If the muffler is knocking, it means that there is most likely a crack in it. It is worth noting that the volume of noise directly depends on engine speed and load on it. Such a malfunction can be eliminated either by replacing the damaged part or by welding. Experts recommend the first option.
Replacing a muffler begins with carefully selecting a new exhaust system kit. It is strongly recommended to use only original samples from the manufacturer. Otherwise, if for some reason a muffler was chosen on a VAZ of a different design, different from the original, the car owner will have to re-adjust the power system.
After the VAZ 2114 muffler has been purchased, the car must be installed on an inspection pit (overpass). The bolts connecting the crimp coupling should be moistened with a special process fluid, type WD. If you don't have it on hand, you can use motor oil or brake fluid.
This will make it possible to eliminate coking of threaded connections and relatively easily, using wrenches, dismantle the VAZ muffler. Then you need to remove the ferrule and the O-ring. After this, all that remains is to remove the muffler from the special rubber pads and remove it from the system.
Installation and fastening of a new element to replace the old one is carried out in the reverse order. After completing the entire operation, you should turn on the car engine and check whether the muffler is knocking or not.
