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.
The most common breakdowns
However, the most common devices are the OZONE family of devices. They need to be cleaned and adjusted twice as often. In addition, they have a lot of different diaphragms, which break every now and then. The most common breakdowns of these units are incomplete opening of the second chamber, as well as malfunctions of the accelerator pump.
- Popping sound when you press the accelerator pedal, as if something is shooting into the carburetor.
- Similar pops, but now it shoots into the muffler.
- The idle speed is either too high or too low (floats).
- The car thinks for a long time when driving on the highway. When you press the gas pedal all the way, it does not accelerate at all or accelerates too slowly.
- When you shift into 2nd or 3rd gear and press the accelerator pedal, the car first slows down and then jerks forward with a sharp increase in speed.
The detonation problem may be associated with a violation of the ignition timing angle. In any case, you should first try to eliminate detonation by adjusting the carburetor. In 90% of cases this helps.
The symptom described in point 3 indicates the need to adjust the idle speed. The situation indicated in paragraph 4 indicates that camera drive 2 is faulty. Eliminated by replacing broken parts. The symptom described in paragraph 5 indicates a breakdown of the accelerator pump - the diaphragm or spring must be replaced.
"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.
Symptoms of a problem
If the carburetor begins to produce a rich mixture, you will understand this by the following signs:
- Fuel consumption increases
- Loud exhaust is heard from the muffler and the smoke turns black
If the engine receives a lean mixture, you will understand this by the following sign:
Loud bangs are heard from under the hood.
In both cases, the engine heats up noticeably more, and its power is also lost.
If you encounter a similar problem, remember that it is a natural consequence of using the carburetor. Any element of the car requires care, regular inspection and maintenance. Therefore, the VAZ 2106 carburetor must be adjusted from time to time.
Before proceeding with the adjustment, you need to make sure that the cause of the breakdown is not the failure of any element inside the device. You need to disassemble it, wash it and clean it. And only after you are convinced that all components of the structure are in full working order, you can begin adjustment.
The easiest option is to send the car to a specialist. Carburetor technicians have a special tool - a gas analyzer. Using this device, you can achieve the most efficient system setup. However, the services of specialists in this profile are not cheap. You may want to do all the work yourself, using available materials. Next we will look at how to set up a carburetor step by step.
"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.
Types of Kopeyka carburetors
Jets for carburetors of VAZ 2101, VAZ 2103, VAZ 2106, VAZ 2107 cars
During the production of the VAZ 2101, several modifications of carburetors were installed in its system. They differ in the size of the jets, as well as the presence or absence of a vacuum corrector. In early Zhiguli models, a carburetor was installed with an ignition system without a vacuum corrector.
The most common carburetor on the VAZ 2101 car is the DAAZ carburetor model 2101-1107010. A vacuum corrector system is already used here. All modifications of carburetors can be adjusted using a similar scheme. But it is impossible to install a model with a vacuum corrector instead of a design without it, or vice versa. Carburetors of well-known brands DAAZ/Weber, Ozone, Solex are also often used; among non-standard carburetors, I would like to highlight Solex 21073 and Solex 21083.
Calibration data for DAAZ carburetors 2101-1107010-01, 2101-1107010-03, 2105-1107010-20, 2105-1107010 10:
| Parameter | Carburetor model and chamber number | |||||
| 2101-1107010-01 | 2101-1107010-03 | 2105-1107010-20, 2105-1107010 10 | ||||
| 1st | 2nd | 1st | 2nd | 1st | 2nd | |
| Diameter, mm: | ||||||
| diffuser | 23 | 23 | 23 | 23 | 21 | 25 |
| main fuel jet | 1.30 | 1.25 | 1.30 | 1,30 | 1.07′ | 1.62 |
| main air jet | 1.50 | 1,90 | 1.50 | 2,00 | 1.70 | 1.70 |
| idle fuel jet and transition system | 0.50 | 0.45 | 0.45 | 0.60 | 0.50 | 0.60 |
| idle air jet and transition system | 1.70 | 0.70 | 1,70 | 0.70 | 1.70 | 0.70 |
| accelerator pump nozzle hole | 0.40 | 0,40 | 0.40 | |||
| accelerator pump bypass jet | 0,40 | — | 0.40 | — | 0.40 | |
| ecomostat fuel jet | — | 1.50 | — | 1.50 | — | 1.50 |
| air jet econoepta | 0.90 | — | 0.90 | 1.20 | ||
| econostat emulsion jet | 1.70 | — | 1.70 | — | 1.50 | |
| starter air jet | 0.70 | — | 0.70 | 0.70 | — | |
| jet of the pneumatic drive of the throttle valve of the second chamber | — | — | — | 1.20 | 1.00 | |
| Spray calibration number | 4 | 4.5 | 4 | 4 | 3.5 | 4.5 |
| Emulsion tube calibration number | FI5 | FI5 | F15 | FI5 | F15 | F15 |
| Accelerator pump flow for 10 full strokes, cm3 | 7±0.25% | 7±0.25% | 7±0.25% | |||
| Distance of the float from the carburetor cover with gasket, mm | 7.5±0.25 | 6.5±0.25 | 6.5±0.25 | |||
| Clearance at the dampers for regulating the starting device, mm: | ||||||
| air damper | 8±0.5 | 7±0.25 | 5 | |||
| throttle valve | 0.75 | 0.85 | 0.75 | 0.85 | 0.7 | 0.8 |
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.
Table of fuel jets for Solex carburetor 21083
Repair and cleaning of the VAZ 2109 carburetor
In the process of throttling the carburetor, one can observe an unstable composition of the fuel mixture over time in the working charges; there is no cycle identity. This has a significant impact on the composition of exhaust gases. Also, the heterogeneous composition of the combustible mixture over cycles can be affected by three factors:
- the nature of the mixture distribution over the flow cross section;
- fuel dispersion;
- the nature of the mixture distribution along the flow.
The type of flow of the emulsion mixture from the channel of the main spray system can have a significant impact on the flow structure. Depending on the ratio of the productivity in the dosing jet system and the flow rate of the emulsion, the following types of flow can be obtained: laminar, plug, coarse emulsion, axisymmetric and wave.
Thus, depending on the change in the type of flow from the nozzle of the main emulsion system, the homogeneity of the composition of the fuel mixture in the operating cycles of the car engine will change significantly. The axisymmetric mode is the most optimal for stable operation of the car engine. This can be achieved thanks to a uniform fuel supply.
The air jets of the Solex 21083 carburetor allow you to adjust, together with the fuel jets, the optimal operation of the carburetor. It should be remembered that the location of the air jet of the main system inside the fuel-air main path is undesirable due to the possibility of clogging or tarring of the jet, which can lead to carburetor malfunctions.
This is often observed when engine crankcase gases pass through the carburetor. It is best to place the air jets in special pockets that will protect them from the effects of direct air flow.
In case of modification or tuning of the Solex 21083 carburetor, it is necessary to pay due attention to the selection of jets. This process should be carried out depending on the engine size of the car.
Thus, for large engine volumes, for example 1.5-1.7, it is best to use small jets.
Due to the large volume, a lot of air will pass through the diffuser per unit of time, and as a result, significantly more fuel will be consumed. Of course, if you are not going to pump up your car for fast driving, then this will not be so significant for you. Otherwise, it is better to install jets with a smaller cross-section.
It is best to start selecting a jet with a fuel jet, and then move on to choosing an air jet. It should also be noted that you first need to select jets for the first chamber, and after installing the jets on it, you should move on to the second chamber of the carburetor. This is the only way to consider the most correct installation or replacement of jets.
Qualified specialists advise that before starting work, find the original factory Solex 21083 carburetor, which is designed for the same engine size as that installed on your car, and try installing these jets on it. Below is a table of jets for the Solex 21083 carburetor.
Depending on your preferred driving style, you can choose the most optimal jet size for yourself. But keep in mind that when using sport series jets, the fuel consumption of your car can double.
Therefore, if you prefer optimal fuel consumption and a dynamic car, then it is better to choose the middle option, for example “normal power” or “moderate power”. For those who prefer a measured, calm driving style, “economical” jets are best suited. By the way, there is also another modification: Solex carburetor 21083 1107010, it has its advantages.
And the video shows how to choose the right jets for the Solex 21083 carburetor:
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.
Carburetor adjustment: setting the fuel level
The level of fuel in the float chamber affects the composition of the mixture in any operating mode of the carburetor, the toxicity of exhaust gases, the dynamics of engine operation and fuel consumption. Work order:
Unscrew the carburetor cover mounting screws and install it in a vertical position. A prerequisite for its installation is light contact between the float tongue and the needle ball. Using a special gauge, measure the gap between the bottom surface of the float and the plane of the cover (taking into account the cardboard spacer)
It is important that the gap is 6.5+0.25 mm. If the gap size does not match, the value is corrected by bending the float tongue. Finally, check the float stroke, which should be 8.0+0.25 mm.
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.
Chassis
To dampen the vibrations that the car's wheels perceive from the road surface, the design of the VAZ-2106 included a front independent suspension, and a dependent suspension was used on the rear axle.
The front suspension consisted of two wishbones - upper and lower, a shock absorber strut with a coil spring, a suspension cross member to which it was attached, and a stabilizer bar.
Chassis
The wheel hub was attached to the levers using two ball joints.
The rear suspension, as already indicated, was dependent. The rear axle was hinged to the car body. This connection was provided by two lower and two upper reaction rods installed longitudinally, as well as one transverse rod. There was also the use of shock absorbers and coil springs in this suspension.
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.
Installation on classics
As mentioned above, the Solex carburetor 21083
It is quite possible to install it on a classic, anyone can do it if they have the skills to work with technology. It is more difficult to adjust the carburetor so that it produces its maximum potential.
Some car enthusiasts find it advisable to grind down internal joints and various jagged edges in the carburetor
and then polish them. This way, air passes into the engine with less resistance, which leads to savings and improved traction.
The accelerator pump plays a significant role in carburetors installed on classics. This device must always work perfectly and without interruption. Otherwise, the car will not accelerate, shots will occur in the carburetor due to a lean mixture, and so on. Craftsmen modernize the accelerator pump, increasing its volume, as well as refining the profile of the release cam.
However, having installed the Solex 21083 carburetor correctly on your classic, you won’t have to modify anything special. These carburetors are quite high quality and well adjusted at the factory.
It is only important to ensure that the air and fuel filters do not become dirty. It is also not permissible for shots or sneezes to occur from the intake manifold, this will quickly ruin any carburetor
How to get the most benefit
It’s not enough to install Solex on a classic; to experience all the benefits, you also need to modernize the ignition system. Instead of the standard one, contactless ignition is installed. Any Solex is initially configured and designed to prepare a lean mixture. To ignite it effectively, a more powerful discharge is needed. A contact ignition system cannot produce such a discharge, but a contactless one can. Its coil can generate voltage up to 25 thousand volts. The spark plug gap will be no more than 0.8 mm.
How does the Ozone carburetor work?
The VAZ 2106 “Ozone” carburetor is a two-chamber emulsion-type device with a falling flow. The first chamber is intended for the dosing system and enrichment device, in the second the mixture of fuel and air is created in the required ratio. What is the operation scheme of the Ozone carburetor?
The fuel pump directs fuel into the float chamber through a needle valve, which maintains the required level. Through the nozzles, the fuel enters the first and second chambers, and then into the emulsion wells, where it is mixed with air, also entering through the nozzles. The created mixture is supplied to the carburetor diffusers.
Immediately after the engine starts, the idle channel is closed by an electromagnetic valve, then at idle speed gasoline flows from the first chamber. As the fuel moves through the nozzle, it mixes with air. When the throttle valves open more (when you press the gas pedal), the resulting mixture goes into the carburetor float chambers, through the transition holes. Through the econostat, the mixture enters the atomizer, which directs it into the combustion chamber of the engine.
General view of the Ozone carburetor
Installation process
Now you can start installation:
- To protect the collector from dirt, the engine compartment must be thoroughly washed.
- Then the drives and cables, as well as hoses, are disconnected from the standard carburetor.
- To remove the choke cable casing, remove the bracket from the choke panel.
- The surface of the collector is carefully cleaned and sealant is applied.
- After these operations, you need to install gaskets in the form of a sandwich. First the thin one is placed, then the thick one, then the thin one again. The purpose of a thick gasket is to provide thermal insulation. And to make the installation process more convenient, the carburetor is installed on the manifold without a cover. The damper drive must be at the front of the car.
- They mount the throttle valve linkage - on the VAZ-2104 it will be more convenient if it is on the cylinder head side. The slide or “helicopter” is sometimes sawed through the center so that it fits evenly on the carburetor. And so that in normal operation the damper does not jam on the spring, plastic tips are installed on the rods.
- Next, pull the choke drive cable over the cylinder head cover and adjust it to the required length. Adjustment is carried out by changing the length of the casing. The cable is then connected to the carburetor.
- After this, you can install the top cover.
- Next, the fuel supply, return, and heating hoses are connected to the carburetor. The return hose is equipped with a check valve. The return spring clings to the axis of the old rocker on the cylinder head cover.
- Now the solenoid valve should be connected to the lighting relay, to the positive contact.
- Next, the air filter and its cover are mounted in place.
That's it, the work on installing the unit is completed. But it’s too early to move on to exploitation. The carburetor needs to be adjusted correctly. Below we will tell you how to do this correctly.
New or used?
You can buy a new Solex for a classic, but it is also possible to purchase a used carburetor. In the second case, it is necessary to carry out an inspection - thoroughly clean the channels, polish the diffusers. In addition, it is better to purchase and replace jets.
But at the same time, you should not buy modern products - it is better to ask your friends and acquaintances for those that were made in the USSR. Modern jets found in repair kits often do not correspond to the calibration dimensions.
In order for the diffuser to work effectively, burrs and protrusions are removed from its elements using a file. Such defects create air turbulence, and this does not have the best effect on filling the cylinders.
What you might need
The first step is to purchase spare parts that will be needed during the installation of the Solex on a classic model VAZ:
- You should buy thin paronite gaskets. But they need to be made specifically for Solex. The holes in the gasket for diffusers differ from Webers and Ozones.
- Instead of two gaskets, you can buy one with two holes. It is placed between the carburetor and the getinax gasket. In addition, they take another one - with an oval hole. It is intended for installation between the manifold and the getinaks gasket.
- They also buy a return hose. Its length must be at least 80 centimeters. Otherwise, it will not reach the fuel line under the pump.
Repairing a faulty device
The procedure for dismantling the carburetor using the example of OZONE.
That's it. The collector must be covered with a cloth. From the removed device, you can unscrew the pneumatic drive of the second chamber and the accelerator pump cover. After this, the faulty parts should be replaced and the breakdowns described above in paragraphs 4 and 5 should be repaired.
If you don’t know how to clean a carburetor, we attach instructions from specialists.
Sources
- https://avtovx.ru/karburator/soleks-na-vaz-2106-178/
- https://expertvaz.ru/2106/strelyaet-neispravnosti-pochistit-karbyurator.html
