Which carburetor is better to install on a VAZ-2106: expert advice

Today on the roads you can often find cars that are 20 or even 30 years old. These are mainly classic VAZ models. The owners of these old cars do their best to keep them alive and strive for optimal performance. The owners of old Zhiguli cars want to improve the dynamics of the car and reduce fuel consumption. This can be done, but it all depends on the carburetor. Let's look at which carburetor is better to install on the VAZ-2106 to get the result. This task is quite feasible, despite the fact that the driver can replace the device and adjust it independently. If you look at the reviews of drivers who replaced the standard carburetor, the effect is quite noticeable.

A brief history of carburetors for VAZ

On the first classic VAZ models, which were an improved Italian Fiat, devices manufactured by the Dmitrov Automotive Aggregate Plant were installed in the power supply system in conjunction with the motors. For the production of these carburetors, a license was purchased from the French. These mechanisms were assigned the index DAAZ-2106 for the VAZ “Six” model.

Until now, such carburetors are popularly called “DAAZ” and “Weber”. Many car owners still actively use them. The use of these mechanisms gives good dynamic characteristics. These carburetors have a simple design without unnecessary design features. But “Webers” have one very significant drawback - they have huge appetites. These models have not been produced for a long time, since along with the VAZ-2105 model, all other Zhigulis were equipped with Ozon products. Below we will talk about it in more detail.

"Ozone" and its problems

Sometimes the pneumatic drive of the damper on the secondary chamber refuses to work normally.

Troubles also arise with a worn out diaphragm in the forced idle economizer system. If for some reason dirt gets into the mechanism or the adjustments are broken, then the second chamber may not open at all, or it may open, but with a serious delay. This leads to a significant decrease in dynamics. Power is lost, the maximum speed of the car decreases, the engine is unstable at high and medium speeds. Despite all this, the DAAZ-1107010 “Ozone” carburetor produces good dynamic characteristics with a fuel consumption of about seven liters per 100 kilometers. Naturally, the device must be constantly monitored and maintained. To avoid contaminating the internal chambers, it is recommended to periodically clean them. A special carburetor cleaner is used. This chemical is sold in aerosol cans.

"Solex"

These mechanisms are no less popular. DAAZ-21053 is especially popular. It is also manufactured under license. This carburetor has good dynamic characteristics and is also economical. This is a good solution if you need a carburetor for the “Six”. The design of the Solex is fundamentally different from all previous devices from the Dmitrov Automotive Unit, equipped with a fuel return supply system.

With this solution, gasoline can be returned to the car's gas tank. By using a reverse fuel supply system, it is possible to save up to 400-800 grams of fuel per hundred kilometers. Some versions of Solex can be supplemented with auxiliary electronic systems. Among them is an idle system with the ability to adjust using an electric valve. Also found on export models. In the CIS countries, a model with an electric idle air valve was widespread. This two-chamber carburetor turned out to be quite difficult to operate.

The channels are made narrow and often clogged. If the device is not maintained, then the idle system begins to malfunction first, and then all other components. In terms of fuel consumption, the Solex on the VAZ-2106 consumed from 6 to 10 liters when driving in quiet mode. In terms of dynamic characteristics, the unit is second only to the early Weber. If you do preventive carburetor repairs in a timely manner, Solex will not cause any special problems.

What kind of carburetor can be installed on the “seven”

During the production of the VAZ 2107, AvtoVAZ designers repeatedly changed the carburetor settings so that the car fully complied with the requirements of the new time. At the same time, several tasks were solved at the same time: to obtain a more powerful engine, to reduce gasoline consumption, to ensure ease of maintenance of the device.

Carburetors from another VAZ model

It is noteworthy that the “seven” can be equipped with carburetors from both previous and subsequent VAZ series. In this case, there will be no need for modification or alteration of existing mounts and landing sites: the units are almost identical in size. In some cases, minor connection problems may occur, but these can be easily resolved.

The carburetor of the Dimitrovgrad Automotive Aggregate Plant is the first unit with which the VAZ 2107 was equipped. It must be said that the first carburetors were produced under license from the Italian company Weber, and then they were repeatedly modified to meet the needs of the domestic automobile industry. Structurally, DAAZ products are very simple, so cars with such carburetors were cheaper than analogues with other installations. In addition, the seat for the carburetor in the engine compartment of the “Seven” was originally created specifically for the DAAZ, so any version of this mechanism was ideal for it. On the VAZ 2107 you can install modifications DAAZ 2101–1107010 and DAAZ 2101–1107010–02.

The DAAZ carburetor consists of two chambers and is equipped with a mechanical drive for the damper of the first chamber. It can be installed on any domestic car with rear-wheel drive. Volume - 1, 5 and 1.6 liters. Depending on the year of manufacture, the unit may be equipped with a microswitch and a remote (i.e. external) solenoid valve.

DAAZ carburetors required fairly high gasoline consumption (up to 10 liters per 100 kilometers), but could produce excellent speed characteristics when overtaking and driving on highways.

The Ozone carburetor is a modified and optimized version of the DAAZ. The mechanism had improved environmental characteristics and consumed significantly less fuel (approximately 7–8 liters per 100 kilometers). For the “seven”, the following versions of “Ozone” are considered the best option:

• 2107–1107010;
• 2107–1107010–20;
• 2140–1107010.

“Ozone” was equipped with a pneumatic valve for efficient operation of the second dosing chamber. When accelerating, the car really had good maneuverability and dynamics, but at the slightest dust on the valve, the second chamber simply stopped working, which immediately affected the speed characteristics of the car.

The Ozone carburetor unit is almost identical to the DAAZ and has the same parameters and elements. The only difference is the modernization of the float chamber and valves.

The Ozon carburetor is no different in size from the DAAZ, and therefore can be installed on a VAZ 2107 of any year of manufacture without any problems.

"Solex"

“Solex” is currently the newest design development of the engineers of the Dimitrovgrad plant. The carburetor of this model is quite complex structurally, and is also equipped with a fuel reverse supply system. It was she who made Solex the most economical carburetor among the entire DAAZ product line.

The carburetor mechanism has a volume of 1.8 liters and is characterized by high throughput due to modifications to the jets. Therefore, Solex is economical and optimized for fast driving. On the VAZ 2107, without modifications, Solex 21083–1107010, which was originally created for front-wheel drive models, can be installed.

With significant fuel savings, Solex also reduces emissions. The main disadvantage of this carburetor is that it is very demanding on the quality of the fuel poured.

"Baker"

On the instructions of the Dimitrovgrad Automotive Component Plant, new models of carburetors began to be assembled in the Leningradsky workshops. It became a more efficient analogue of the entire DAAZ line: with high build quality and reliability of small parts, the carburetor became significantly cheaper, which reduced the cost of new VAZ 2107 models.

The Pekar carburetor is completely identical to the Ozon and DAAZ models in size, but differs significantly from them in performance characteristics: the mechanism is more durable and unpretentious. Fuel consumption and environmental friendliness of the installation are fully consistent with current standards. Two types of “Bakers” are mounted on the “seven”: 2107–1107010 and 2107–1107010–20.

Thus, you can install a carburetor from any other VAZ model on the “seven” - the procedure will not cause installation difficulties or unpleasant consequences during operation. However, you need to take into account the vehicle's output data in order to select the optimal carburetor installation option.

Carburetor from a foreign car

Car enthusiasts often think that an imported carburetor for a domestic car will immediately solve all problems with fuel consumption and speed of movement. It is necessary to understand that a carburetor from a foreign car most often, due to its dimensions and joints, does not fit on the “seven” - it can be installed, but you will need to spend time on modifications and alterations.

Why not!? Of course it is possible! Also, as much as possible. Single-chamber Italian Webers become normal, but there is no point, there are 2-chamber Webers and Solexes that fit the mounts, others can be installed using a special spacer. It is best to install a pair of horizontal twin webers or delroto - it will be great! But the question is how much will it cost and why do you need it?

Cat 01

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Experienced car owners do not recommend installing carburetors from foreign cars in the domestic auto industry. A lot of money and time will be wasted on this work, and it will be almost impossible to achieve the desired result. Therefore, it is advisable to either install a new, more modern carburetor from a domestic manufacturer, or install two carburetor mechanisms at once.

Video: how to remove a carburetor from a VAZ and install a new one

How to choose a carburetor and what to install on a VAZ-2106?

Those who like to make improvements to classic models from AvtoVAZ and simply owners who want to improve the performance characteristics of the car most often choose Solex. Models used are DAAZ-21083. Installing them on classic models is impossible without significant modifications.

When thinking about which carburetor is best to install on a VAZ-2106, you need to take into account the engine size. For 1.3-liter units, the DAAZ-2018 option is perfect. For engines with a volume of 1.6 liters, the best choice is DAAZ-21083. The differences between these two models are in the cross-sectional diameter of the diffusers, as well as in the sizes of the fuel and air jets. If you install this carburetor as it is, then at speeds close to 4 thousand, the air emission speed can reach supersonic, which is not acceptable. But this will not affect acceleration in any way. It is necessary to enlarge the diffusers on the first and second chambers and install other jets. After this, fuel consumption will be the same as on 21053, and the dynamics will be better than on 21073. For VAZ-2106 cars, the price of such a carburetor will be about five thousand rubles.

Adjusting the carburetor VAZ 2106

The performance of the power unit under any operating conditions directly depends on the correct adjustment of the carburetor. This suggests that before you pick up a tool and turn any screws, you need to understand which part is responsible for what. In addition, you will need to prepare the following tools:

• set of screwdrivers (flat, Phillips);
• set of open-end wrenches;
• a set of round probes or drills of different diameters;
• rubber bulb;
• toothpicks;
• container for washing the mechanism;
• calipers
• tweezers;
• ruler;
• rags.

XX adjustment

The idle speed is adjusted using the quality and quantity screws. The procedure consists of the following steps:

We start the engine and warm it up to an operating temperature of 90˚C, then turn it off.

Video: how to make idle stable

Adjusting the float chamber

One of the first steps when setting up a carburetor is adjusting the float chamber. If the level of gasoline in the chamber is high, the fuel mixture will be rich, which is not the norm. As a result, toxicity and fuel consumption increase. If the level is less than prescribed, then at different engine operating modes there will not be enough gasoline. In this case, it is necessary to adjust the float tongue so that it has a stroke of 8 mm. It would be a good idea to remove the float, remove the needle and inspect it for defects. If the carburetor overflows, it is better to replace the needle.

Adjusting the accelerator pump

After the float chamber is adjusted, it is necessary to check the operation of the accelerator pump. To do this, remove the carburetor from the engine and remove the top cover from it. The pump is checked in the following order:

We prepare a bottle of pure gasoline, place an empty container under the carburetor, and fill the float chamber halfway with fuel.

When checking the accelerator, you should pay attention to where the jet is directed, what shape and quality it is. During normal delivery, it should be smooth without any deviations or spraying of gasoline. In case of any violations, the accelerator atomizer must be replaced with a new one. Structurally, the carburetor has an adjustment screw in the form of a conical bolt, which, when tightened, closes the hole in the bypass jet. Using this screw, you can change the fuel supply of the accelerator pump, but only downward.

Cleaning or replacing jets

During operation, the carburetor needs to be cleaned and purged with air every 10 thousand km. mileage Today, many cleaning products are offered without removing the unit from the car. But as a rule, they only help with minor stains. For more serious blockages, you cannot do without removing the device. After dismantling and disassembling the carburetor, unscrew and clean the strainer and jets. You can use gasoline as a cleaning agent, and if that doesn’t help, use solvent.

To avoid damaging the diameter of the nozzle passage holes, do not use metal objects, such as a needle or wire, for cleaning. The best option would be a toothpick or a plastic stick of a suitable diameter. After cleaning, the jets are blown out with compressed air so that no debris remains.

Video: how to clean the carburetor

At the end of the entire procedure, the jets are checked for compliance with the installed carburetor. Each part is marked in the form of a series of numbers that indicate the throughput of the holes.

Table: numbers and sizes of jets for VAZ 2106 carburetors

Features of the installation DAAZ-2108, -21083

To install any of these models on the “Classic”, it is necessary to prepare a new set of gaskets, hoses for the carburetor heating system, a tee for connecting to the fuel system, a valve and rods for the accelerator. To get the maximum result from this procedure, it is advisable to replace the ignition. It is better to install a more technologically advanced, electronic one. Contact ignition is a thing of the past. The system is very unreliable and often causes operational problems. The installation of contactless electronic ignition is one of the most useful improvements for domestic VAZs, in particular for the Six.

Features of installing carburetors

It is better to install two new carburetors. Their parameters must be identical. The position of the mixture quality and quantity screws should be checked. If necessary, adjustments are made. It is important that the adjusting screws are turned out the same amount.

All hoses must be securely secured with clamps. To ensure reliable and durable operation, it is important to install an air filter. Since there is only one filter in the standard production, modification is required. How to make a filter depends on the ingenuity of the car enthusiast, but the main thing is to avoid allowing the engine to operate directly. An option for making a filter is to cut out a sheet steel housing to the size of the filter element.

Installing air filters

The next stage is to obtain synchronous operation when the gas drive is applied. To control Solex carburetors, a cable drive is used. We install the stock plastic trim and the second carburetor is synchronized with the first. A test run of the engine will show how correctly the preliminary adjustment was carried out.

The final adjustment is carried out on a warm engine using vacuum gauges designed for multi-carburetor bikes. You can also use for these purposes:

• calibrated econometers;
• mixture quality sensors inserted into the spark plug hole.

Having installed two carburetors on a VAZ, during operation you should monitor the condition of the spark plugs of each pair of cylinders. A different color from the normal electrodes will indicate that the mixture feeding the engine is excessively rich or lean. Having decided which carburetor requires adjustment, it is necessary to achieve the optimal mixture composition. It is important that the engine operates stably at any speed.

Other options

But don’t think that this is all that is suitable for “Classics”. If you think about which carburetor is better to install on a VAZ-2106, then you also remember the Solex-21073. It is designed for 1.7 liter engines - from 21053 it is distinguished by larger channels and enlarged jets.

After installing it, you can get even more dynamics, and the fuel consumption will be 9-12 liters. And if you are not afraid of the consumption and rare preventative repairs of the Solex carburetor, then you can opt for it.

Choosing a carburetor for the “classic”

If you are a fan of drive and want more than what the standard system gives you, then the DAAZ 21053 , manufactured under license from the French company Solex, may be suitable for you. This carburetor is the most economical and provides the best dynamics for classic engines, but it is quite difficult to find it on sale; not all sellers know about its existence. It uses a design that is fundamentally different from the designs of previous DAAZ models. A fuel reverse supply system is used here; there is an outlet through which excess gasoline is returned to the tank, this allows you to save about 500-700 grams of fuel per 100 kilometers.

Depending on the model, there may be many auxiliary electronic systems, such as: an idle system controlled by an electro-valve, an automatic choke system and others. But most of them are installed on export models; we mainly have only an idle system with an electric valve. By the way, it can give you a lot of problems, in this carburetor there are very small channels for fuel and air, and they very often become clogged, if they are not cleaned in time, then the first thing that starts to work poorly is the idle system. This carburetor uses about 6-9 liters of fuel during normal driving, while providing the best dynamics of all the units presented above, except for Webers. If you want to get the most out of the engine, but at the same time not bore yourself with unnecessary details of carburetor settings, then feel free to choose it.

Well, I have listed for you all the standard carburetors that are installed on classics without modifications, you just need to remember that if you buy a carburetor, then you need to select it according to the engine size of your car. Even if you get a good carburetor, but it is designed for a different cubic capacity, then with the help of a specialist you can change the jets in it and adjust it to your needs.

But don't think that choosing to install a carburetor ends with this list. If you want to get even more from your car and have a good carburetor technician or can customize them yourself, then you can turn your attention to two more types of carburetors, Solex 21073 and Solex 21083 :

1. the first is designed for a volume of 1.7 cubic centimeters (for the Niva engine), it differs from 21053 in that it has larger channels and larger jets. After installing it, you will get even more dynamics, but fuel consumption will be 9-12 liters per 100 km. So if you want a lot of dynamics and at the same time have the money to pay for the extra expense, you can choose it.
2. the second (21083) is intended for VAZ 2108-09 cars, and is installed on classic engines only with modifications, because the gas distribution systems of engines 01-07 and 08-09 are different. And if you install the carburetor as is, then at a speed of about 4000 thousand, the speed of the intake air can approach above the sound speed, which is unacceptable, the engine simply will not accelerate any further. If you want to install it, you will have to drill out the diffusers of chambers 1 and 2 to a larger size, and install slightly larger jets. All these alterations are worth doing only if you are a sincere connoisseur of the classics, as they are quite labor-intensive. The price of the alterations is consumption of less than 21,053, increase in dynamics by even more than 21,073.

We can say even more, there are single-chamber and double-chamber carburetors from imported companies, but they are, firstly, expensive, and secondly, they do not always provide better dynamics and economy than those listed above. So it’s up to you to decide what to choose and how to drive.

Bottom line

Of course, these are not all carburetor models that can be installed specifically on the VAZ-2106 and other classic Zhiguli cars. There are a lot of Chinese devices, as well as devices from European and American manufacturers. Both single- and double-chamber models are available for sale. But they are expensive and do not always guarantee high dynamic performance and efficiency. You will only get one of the two. Therefore, the question of which carburetor is better to install on a VAZ-2106 can be answered this way: it is best to install a domestic device, one of the above. Reviews from motorists recommend installing “Ozone”. It is one of those that, with low fuel consumption, produces maximum dynamics for a car.