Double exhaust on the Volga

Advantages of dual exhaust

You may ask, what is the point of tuning the exhaust system if it already functions flawlessly? The bifurcated muffler has special advantages:

• Increasing the intensity of exhaust gas removal by reducing resistance, and as a result - increasing engine power;
• Additional reduction of noise level during operation of the exhaust system;
• Giving the car an aggressive, spectacular “sporty” appearance;
• Providing a smooth, unique “noble” sound to a running car.

There are two options for installing a dual exhaust on a Lada Priora - purchasing a bifurcated muffler in a specialized store and making your own system from individual elements. The first tuning method is quite expensive, but the second requires only certain skills, some parts and the simplest tool.

Silencer - what is it?

A muffler in the context of a car is a part whose main purpose is to reduce the noise level from a running engine. This noise level indicator is established by GOST and if its value is exceeded, traffic police officers have the right to prohibit the operation of the vehicle. As a rule, people think about the muffler when it is destroyed, primarily due to corrosion, and the increased noise level begins to cause inconvenience to the driver and others.

In sports cars, the muffler is also a tuning element in terms of giving a pleasant engine sound (tuning to increase power will be discussed below). Depending on the exhaust system configuration, the sound may vary significantly. Among other things, powerful cars usually have controlled dampers that direct exhaust gases bypassing the muffler during maximum power modes. This causes the volume to increase and attract the attention of others. The power gain from this is minimal

If we compare the noise from different types of engines, it is fundamentally different and does not depend on the type of muffler. The loudest are naturally aspirated gasoline engines due to their high operating speeds. Next in terms of noise level are diesel engines, since their operating speeds are usually quieter. The quietest are turbo engines, since they have a significant amount of energy contained in the exhaust gases used to spin up the turbine.

If we consider the processes occurring in the exhaust system in general and in the muffler in particular, then there are two main processes - the shock wave of sound and the transfer of direct gases. The most interesting thing in the process of gas transfer is the alternation of cycles of high and low pressure. That is, when the exhaust valve is open, gases escape and accelerate; after closing the valve, the flow of gases continues to move by inertia and a vacuum is formed in the area of ​​the exhaust manifold. In sports cars, the selection of crankcase gases is based on this principle. To do this, a check valve is installed near the exhaust manifold, only allowing gas in, and during phases of reduced pressure, crankcase gases are taken in. As for the sound wave, it is reflected many times inside the exhaust system and reflected back from the muffler. This creates a so-called back wave, which can lead to increased noise and a reduction in maximum power.

Split design options

Note that there are several design solutions for installing a homemade dual exhaust on the Lada Priora. Let's look at the most common options:

1. Divergence of two outlets from the main muffler pipe (at the rear beam);
2. Wiring of two mufflers directly from the resonator;
3. Installation of two resonators with mufflers immediately after the catalyst;
4. The output of two pipes from each of the dual mufflers.

So, there are many ways to tune the exhaust system, the final choice depends on which option suits you best.

Workflow Stages

Types of Dual Homemade Silencers

Let's consider the simplest and low-budget method of installing a dual exhaust on a Lada Priora with the installation of outlets from the muffler pipe under the rear beam of the car. Note that here you can choose one of two options:

• Distribution of pipes of different lengths with welding of branches to the main muffler.

Two pipes of different lengths are welded to the main muffler pipe

• Welding two pipes with similar lengths, angles and number of turns to the main muffler pipe.

Two identical pipes are welded to the muffler pipe

Remember that different lengths of pipes, although they affect the amount of gases released (this will be especially noticeable at high engine speeds), but do not affect the operation of the engine itself.

Preparing for work: tools and materials

To carry out a full cycle of work, we will need to prepare a set of simple tools and a number of inexpensive materials:

At the preparatory stage of work, you need to take the necessary measurements and draw up a simple diagram of the design of the double exhaust. There is simply no universal drawing that would be suitable for each individual project. Professional craftsmen advise taking all measurements at the place of work, transferring the data onto paper in a form convenient for you.

Diagram of a homemade dual exhaust outlet bracket

Note that the exhaust system of the Lada Priora sedan and station wagon differs from the same equipment installed on hatchback cars in the length of the main muffler pipe. Installing a dual exhaust on a car with such a body for the first two modifications will result in the system pipes protruding from under the bumper by 150–160 mm.

How to make it yourself

Let's look at the process of installing a bifurcated muffler using the example of a finished sample - all the steps we performed are suitable for installing any structure of this type. The only nuance that can affect the progress of work will be the possible deviation of the pipes of the independently manufactured system from the fastening elements of the original muffler. However, this is not a problem, since all brackets can be easily made and mounted with your own hands.

We install the car on a lift or inspection hole, prepare all the necessary tools, be patient and get to work:

1. We dismantle the original main muffler by disconnecting the clamp at the point of its attachment to the resonator (additional muffler).
2. We will hang the right part of the new structure on its seat, installing it on the existing cushions (replacing them in case of critical wear).
   We do not attach the left side of the muffler yet, but only connect the common terminal of the dual exhaust to the resonator, slightly “baiting” the clamp and the O-ring. Installation of a part of the structure on the seat of the original muffler
3. Let's attach the left bend to the side member on the bottom of the car, mark the attachment point of the bracket-bracket.
   Left part of the structure, mounting bracket and muffler cushion
4. Using a drill, drill two holes and securely fasten the bracket with self-tapping screws. Preparing holes for installing the bracket-holder
5. We hang the muffler outlet on the bracket using a fastening rod, after inserting the cushion into the holder bracket. Installing an additional muffler outlet
6. In our case, the elements of the dual exhaust need to be connected to each other using a clamp with O-rings (do not tighten too much).
   We exclude this stage of work when installing a solid structure. Connecting the branches to each other using a clamp
7. It remains to check the angle of the dual exhaust outlets relative to the ground. After making sure that they are at the same level, tightly tighten the clamps at the junction of the inlet pipe with the resonator and at the junction of the two pipes (if such an element is in the design).

Checking the angle of the taps relative to the ground

How to make a dual exhaust on a Ford Focus 2 sedan

The sound of a damaged vibration compensator is difficult to confuse with any other defect. If an unpleasant rumble appears from under the bottom of the car, then it will only increase, increasing as the engine speed increases. Hitting the road with such a breakdown is not only uncomfortable, but also unsafe for the engine - accidental dust being sucked into the exhaust system leads to clogging of the resonator and acoustic filter.

Reasons for failure of an elastic connection

The elastic part acts as a fuse that prevents destruction of the exhaust system. The need to install it is due to the presence of vibrations that occur when the engine is started and its subsequent operation. In most cases, simultaneous repair of the corrugation and replacement of the catalyst with a Ford Focus 2 flame arrester is justified in order to optimize work processes.

A device for compensating temperature stresses and mechanical vibrations in most cases fails for the following reasons:

• Violation of integrity in the event of a breakdown of the converter and increased exhaust gas pressure.
• Defects due to collision with foreign objects and exposure to chemicals.
• Destruction of damper supports and other fastening elements of the exhaust system, which ultimately leads to unwanted vibrations.

In addition to acoustic discomfort, there is also a sensitive loss of power due to a violation of the correct operation of the oxygen sensor.

What to prepare for changing the bellows?

A high-quality replacement of the Ford Focus 2 muffler corrugation implies the fact that the size of the standard part is 55x190. Practical experience has shown that analogues with parameters 55x200 or 60x200 can be used as a replacement, which are what most motorists use.

Among the common models, three-layer corrugations Super-Q, Interlock and Innerbraid with an internal reinforcing sleeve made of metal should be noted. An example set of spare parts includes the following items:

• Super-Q B55200A – three-layer bellows.
• Reinz 71-36553-00 – exhaust manifold gasket.
• Ford 1 316 608 – gasket for exhaust pipe.
• Two nuts and two bolts for the exhaust pipe.

To work you need to prepare a set of tools:

• Set of heads for 8, 10, 13 and 15.
• Heat-resistant paint.
• Welding machine.
• Gas stove.
• Electric drill.
• The key is 13.
• Bulgarian.

Technology for changing elastic vibration compensator

When changing the bellows on a Ford Focus 2, you can replace the standard catalyst with a flame arrester, which will save time. Be that as it may, the first step is installing a new bellows:

• Unscrew the four 8mm bolts securing the converter protection.
• Disable the sensors; there is no need to unscrew them.
• Unscrew the four 15mm and one 13mm bolts that secure the “pants” to the cylinder block.
• Unscrew the four 13mm bolts securing the spacer. This will help to dismantle the “pants”.
• Use a grinder to cut off the exhaust pipe bolts.
• Pull the “pants” out of the engine space.
• Drill out the metal studs on the exhaust pipe.
• Cut off the old corrugation with a grinder and weld a new one.

If you decide to install a factory or home-made resonator, then this stage of work is carried out simultaneously. Next, it remains to install the repaired section of the exhaust system in its original place.

How to organize the replacement of a catalyst with a flame arrester on a Ford Focus 2 car in a garage?

The catalytic converter is a replaceable part with a service life of 150,000 km. The period is quite impressive, but even this does not protect against premature failure.

Typical symptoms of a malfunction are as follows:

• Reduced acceleration dynamics and increased fuel consumption.
• Difficulty starting the engine.
• Unpleasant smell from the exhaust pipe.
• Extraneous sound from under the car.

On a Ford Focus II, depending on the power of the internal combustion engine, two types of neutralizers are installed:

1. Motors volume 2.0; 1.8 and 1.6 liters with a power of 100 hp. equipped with one manifold and two oxygen sensors.
2. Engines are 1.6 liters with a power of 115 hp. have two neutralizers and four sensors.

Most car owners prefer to immediately install a preliminary resonator when replacing a faulty Ford Focus 2 muffler corrugation. In this case, the standard lambda probes will need to be replaced with ECU fakes. The controller is placed on the second sensor.

There is an option to install an emulator with a minicatalyst or an electronic simulator of an oxygen probe. The most popular flame arresters used by craftsmen:

The most budget option is to install a homemade resonator in the body of a standard catalytic collector. There are also factory-made stainless steel versions with an internal cone, such as Fortluft, which are ideal for mounting on the Ford Focus II. The process of replacing the neutralizer with a resonator includes the following steps:

• Use a grinder to cut off the back of the collector from the corrugation side.
• Insert a flame arrester into the neutralizer body.
• Weld the rear housing into place and install the assembly onto the vehicle.

You can still meet motorists who solve the problem of a faulty converter simply - cut out the part and weld a piece of pipe in its place. This solution is fundamentally wrong, because at a minimum, cooling of the gases occurs in the catalytic collector or preliminary resonator. Changing the unit to an ordinary pipe leads to rapid burnout of the main muffler. Of course, the emission of harmful substances increases.

Watch an interesting video on this topic

eurasia-avto.ru

Examples of finished structures on the Lada Priora car

New exterior of the Lada Priora with a dual exhaust system. Bifurcated muffler. Bottom view Spectacular view of the Lada Priora with dual exhaust

So, we have established that tuning the exhaust system on the Lada Priora is not such a troublesome task. The main thing is to remember that the exhaust pipes of the car are located in close proximity to the fuel system. Elements of a homemade double exhaust must be wrapped with asbestos cord, which will provide thermal insulation of the parts and prevent fire.

When improving a car, people resort to various methods that allow their vehicle to stand out from other models. The fastest and relatively cheapest is to install a dual exhaust. Installing a more advanced exhaust system, in addition to appearance, can also provide more power due to a lighter exhaust. Sometimes cars need to install a dual exhaust when increasing the size and power of the engine, this will allow you to get the maximum performance that the car is capable of. Such tuning can be done independently. When making a double exhaust for VAZ cars, you will not need large injections of money, and if you have your own tools, you only need to purchase consumables.

Why are two exhaust pipes needed?

Initially, two pipes under the stern could be found on cars with powerful V8 engines, engines with a double-row V-shaped cylinder arrangement. Six cylinders, eight, twelve, they were located at a certain angle, row to row, and the design of such a power plant assumed the presence of two exhaust manifolds - a separate row of cylinders received one each. Accordingly, each exhaust manifold had its own exhaust pipe. Boxer engines also have approximately the same characteristic design, only there the cylinders are located in opposition to each other, but the design also requires two exhaust tracts.

Dual Exhaust Installation

An in-line power unit is usually equipped with one exhaust manifold and, accordingly, one exhaust pipe. But if we take powerful power plants with large volumes, especially turbocharged ones, then in the case of an in-line arrangement of pots, the presence of two “trunks” is justified. The fact is that in powerful units with a large displacement, a large amount of the fuel mixture is burned, which produces a large amount of exhaust gases, and the more powerful the engine, the more gases entering the exhaust. To ensure quick and effective cleaning of the cylinders, as well as to reduce pumping (pressure) losses in the exhaust, a minimum resistance of the exhaust gases in the path is necessary. This is what two or more exhaust pipes provide.

Why do they put two exhaust pipes on a car?

Types of mufflers for creating dual exhaust

When making a double exhaust for VAZ cars, the correct choice of mufflers is important. Thus, there are types of mufflers for exhaust systems:

• Resonator mufflers are usually made of high-quality perforated pipe with a surrounding chamber. It is the surrounding chamber that provides muffling of noise that has a certain frequency. Sometimes several resonators can be installed.
• The “standard” type muffler is represented by a system of partitions that resemble a labyrinth in their structure. The partitions allow the exhaust gas to be cooled, and when passing through such a system, the sound is significantly quieter. They can be equipped with perforated pipes.
• The third type is direct-flow systems.
  They also have a noise reduction system, but it is represented by special filters and fibers that are installed in the middle of the pipe itself. That is why the service life of such a muffler is limited by the useful life of the fibers inside the direct-flow muffler.

A special feature of this type of exhaust pipe is that it can dampen engine exhaust sounds quite weakly.

When manufacturing double exhaust for VAZ cars, the correct choice of mufflers is important

Dual Exhaust Vs. Single exhaust

The internal combustion engine takes in air and mixes it with fuel, creating the perfect combination for the explosion that fires the pistons. After this explosion, the remaining gases are pushed out of the engine through the exhaust manifold. Increasing the amount of exhaust gases leaving the engine directly affects the air intake and can significantly increase torque and power.

Single exhaust

Most new cars come with a single exhaust system because they are cheaper to make and for most people the difference between a single and a dual doesn't matter. The purpose of any exhaust system is to direct unused engine gases through the exhaust manifold and into the atmosphere. The single exhaust is not only the cheapest to produce, but also the most restrictive, cheating the car enthusiast out of readily available power.

Dual exhaust

If your new car came equipped with a dual exhaust, it's because the automaker designed and marketed it as a high-performance car. The muscle cars of the 1960s and 1970s all had dual exhausts. Don't be fooled as some dual exhaust systems are actually a single exhaust as some manufacturers only use one manifold and split the exhaust pipe downstream of the muffler. From behind the car you can see two exhaust pipes, but if you follow them forward, you will only find one pipe and one manifold. There is no horsepower advantage to this system.

Headings

An important part of any dual exhaust system is the manifold. The plugs replace the restriction exhaust manifold and bolt directly to the engine. These non-restrictive tubes feed exhaust gases into each exhaust pipe, one on each side of the engine.

Horsepower Benefits

Every car is different when it comes to how much horsepower you can expect from adding a dual exhaust. Most aftermarket exhaust system manufacturers claim a 15-20% increase in horsepower (hp). For example, a car with 190 hp. could potentially rise to 225 hp, which is an impressive increase. Adding headers usually adds another 20 to 20 hp.

Price

As with everything, cost is relative. The question has to be asked: is the increase in horsepower really worth it? It all depends on how much more horsepower you need. Owners of the notoriously underpowered six-cylinder Jeep Wrangler often complain that they have to downshift to climb even small grades or maintain speed on the highway. In their case, it would probably be worth investing about $1,200 in a certified mechanic to install the headers and a custom dual exhaust. However, before deciding on any system, it is always wise to talk to several mechanics for their expert opinion.

Related articles:

• Purpose of the exhaust manifold
• What is the function of the exhaust system?
• Symptoms of an Exhaust Manifold Leak
• What is an exhaust manifold leak?
• How to increase power on a Nissan Xterra
• Symptoms of a blown exhaust manifold gasket

Tips for choosing the right muffler for tuning

• The main attention should be paid to the weight of the muffler and the quality of the metal from which it is made. The greater the weight of the muffler, the better.
• Check the quality of the welds: they should be smooth and not very thin.

The main attention should be paid to the weight of the muffler and the quality of the metal from which it is made

• You also need to look at the painted areas of the muffler. If you detect even the smallest area of ​​paint chipping, there is no need to take it: this is the first indicator that the muffler is already susceptible to corrosion processes and will not serve you for long. Most of the options on offer are now made from alloys or stainless steel.
• Pay attention to the length of the new muffler and its attachment points to the body.

For a VAZ car, you should choose a muffler that completely suits you in terms of design and level of noise absorption

For a VAZ car, you should choose a muffler that completely suits you in terms of design and level of noise absorption, because it is the one that can ensure comfortable movement in the car.

Installation of a ready-made double exhaust on a VAZ

The easiest option for replacing an old muffler with a dual exhaust is to purchase a ready-made dual exhaust design from an auto parts store. The exhaust systems are identical for cars such as the VAZ 2115 and VAZ 2114; a similar situation is observed for models 2109 and 2108. The interchangeability of parts in different models allows you to select the optimal dual exhaust design.

The interchangeability of parts in different models allows you to choose the optimal dual exhaust design

When installing it yourself, you will need a small set of tools: a set of wrenches and a screwdriver. For fastening you will also need clamps and mounting brackets.

Dual Exhaust Installation Steps

1. First of all, you need to remove the old muffler.
2. Afterwards, you should hang the right part of the new muffler on the right side of the car (previously placed on a lift), while using the existing cushions. In this case, the left part does not need to be fastened; you just need to connect the muffler to the resonator using a clamp and seals.
3. Next, you need to connect the left part of the muffler to the main part through the pipes. In this case, it is necessary to take into account the location of the fastening rod, and it is also necessary to calculate the place where the holders in the form of brackets will be placed.
4. It is necessary to use a drill to make two holes with a diameter of 1.5 mm in the spar. These holes can attach a holder, which is screwed with self-tapping screws.
5. The completed operations allow you to move on to attaching the main left part. Fastening is carried out by inserting the muffler cushion directly into the bracket-shaped holder; the exhaust rod is also inserted into the cushion.
6. The opposite side of the muffler is secured using O-ring clamps. This fastening should not be too tight.
7. All the work done allows us to move on to the process of adjusting and establishing symmetry between the two exhaust pipe tips. Initially, loosely tightening the connections will allow the installation to be fine-tuned.

Making your own dual exhaust

If you have the time, materials and necessary technical means, you can make a double exhaust for a VAZ car yourself. You will still have to purchase the main parts of the exhaust system.

However, when manufacturing an exhaust system, you can save significantly, at least on the purchase of parts.

Experienced motorists have long developed two main options for manufacturing double exhaust for VAZs.

1. The first option involves manufacturing an exhaust with different angles of both exhaust pipes. With this option, the second pipe is simply welded from the side into the pipe that comes from the manifold. When the car is idling, the exhaust gases exit the pipes almost uniformly, but at high engine speeds, most of the exhaust exits from a straight pipe that comes from the manifold.

Exhaust with different angles of both exhaust pipes

1. A different version of the exhaust system will ensure the same amount of exhaust gases from both pipes. In this case, you need to weld two pipes with the same angles and turns at even angles to the pipe that comes from the collector. This can give the structure a more aesthetic appearance.

Exhaust with equal angles of both exhaust pipes

After choosing your exhaust system design, you need to move on to the next step of installing your own dual exhaust design. When installing a self-made structure, problems may arise with pipes deviating from the location of the old holders. But this is not a big problem, since they can be made and installed independently.

Remember that before installing your own exhaust, it must be wrapped with asbestos cord, which will provide thermal insulation. It is extremely necessary in order to avoid fire, since the fuel system is located dangerously close.

As for the installation process, it is identical to the one mentioned above.

To become more familiar with all the nuances of manufacturing and installing dual exhaust on VAZ cars, we bring to your attention a video with a more detailed description.

How to make a double exhaust on a VAZ 2114

If you decide to tune your iron horse, you may encounter the following questions:

• how to secure the additional pipe;
• how to properly distribute the exhaust;
• how to carry out the work correctly.

You should know that there are several most popular ways of making a dual exhaust. 1. By welding an additional pipe to the main one.

2. By connecting an additional lead directly to the main resonator.

Stages of work:

1. The first step is to remove the main muffler from the car.
2. Next, you need to make a decision about which design option to choose. We will bifurcate the exhaust, since with this design the gases will be distributed evenly both when the engine is running at idle speed and at higher speeds. We will make the branching on a section of pipe after the resonator, closer to the external gas outlet.
3. After the preparatory work, it is necessary to take a workpiece of the required diameter. At the same time, make sure that the metal product does not contain rust or mechanical damage. Take the necessary measurements (so that the pipe can be positioned on the spar as accurately as possible in the future). Using a welding machine, weld the workpiece to the main terminal. During the work, do not allow distortions; to do this, take measurements using a level, focusing on the position of the factory element. If distortions occur, smoke will not come out evenly.
4. After welding, the resulting structure must be secured under the bottom of the car. It is best to attach to the spar. To do this, you need to drill two technical holes in the connection area. For direct fastening, standard elements (metal bracket, rubber pad, metal ring) are perfect.
5. Carry out the remaining connections and welding work.
6. Start the engine and test the exhaust operation. Pay attention to the tightness of the resulting structure.

As a result, making a double exhaust for a VAZ 2114 yourself will save you a decent amount of money.

An exhaust system with a bifurcated muffler is the first sign of an elite, expensive car. This equipment is equipped with the brainchild of the foreign automobile industry with powerful engines that require complex design solutions for more intensive removal of exhaust gases. However, it’s no longer a secret that such tuning is also performed on domestic cars, where the number of “horses” under the hood is much less. As an example, consider installing a dual exhaust on a Lada Priora.