VAZ-2105 is the model that was produced by AvtoVAZ for the longest time among all other cars. The first copies rolled off the plant's assembly line in 1979. The last “five” were collected in 2010. The popularity of this model is easily explained by its performance characteristics, convenient functionality, and ease of maintenance. Despite the fact that the car is outdated, the owners still have many such cars in their hands and there are still a lot of questions about their repair. The most common questions are related to the Solex 21053 carburetor. Let's take a closer look at this unit and everything connected with it.
Solex carburetor 21053 20 calibration data
During the process of carburetor throttling, 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 volume of the car’s engine. 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.
Troubleshooting
During operation of a carburetor engine, the driver may encounter various malfunctions. Many of them cannot be corrected by adjusting screws. Let's look at the main faults and repair method.
You can identify problems with starting, idling, failures when pressing the gas, weak traction and unstable operation in any mode, and increased gas mileage.
Carburetor 21053-1107010-20 for VAZ 21063.
Carburetor VAZ-21053-20 V=1500 DAAZ
Carburetor VAZ-2105-20 V=1300 with vacuum corrector DAAZ
Carburetor VAZ-2105 V=1300 DAAZ
Good day, dear reader!
The original carburetor had become very bad; there was no desire to sort through and clean it. I decided to put something more modern. The choice fell on 21053-1107010-20 Solex. I bought it in the hypermarket “Country of Spare Parts” on the street. Ketcherskaya 2-A.
I checked the code on the website - the carburetor is original.
Also for installation we will need:
— Choke cable 2108, because classic short. — Set of rods and adapters for gas drive (Niva). — Check valve; tee; hoses. — Thick thermally insulating gasket and thin ones under the carb flange + possibly studs.
— Hoses for the carburetor heating system, suitable for 2108, fuel can also be used.
We remove the old carburetor, install a new cable, rods, studs, gaskets.
We install the lower part first, for the convenience of connecting all hoses and rods.
Next, we install the upper part, attach the return line for fuel, and the cable.
We pump up the gas and you can try to start the car. I got it started the first time. I adjusted the quantity and quality a little, installed an air filter and went to test it. The car does not stall from 500-600 rpm, picks up instantly, and reacts clearly to the gas pedal.
In terms of consumption, the review will not be entirely objective, my engine has already lived its best years + my volume is 1.3 liters, and the carb is designed for 1.5-1.6, I need to select jets.
I am satisfied with the purchase. I hope my review and mini installation review will be useful to you. I wish you successful purchases
