Correct tuning of the Solex 21083 carburetor with your own hands

The Solex carburetor had fairly good performance for its time and allowed the VAZ engine to operate stably in most operating modes. To obtain maximum power, the resistance in the intake tract must be minimal, which will allow large volumes of air to enter the combustion chamber. This is especially important when working at medium and high speeds. But on the other hand, if the damper opens instantly, the vacuum in the diffuser drops, leaving the mixture leaner.

The rate of filling the chamber with air decreases and this causes a decrease in power at low speeds. On carburetors of engines 2109.21083, the diameter of the main Solex diffusers is reduced - 21 mm and 23 mm, respectively, in the 1st and 2nd chambers. Thanks to this, it was possible to achieve acceptable mixture formation at low speeds (as on an engine with an injector), sacrificing the loss of power and elasticity of the VAZ engine at medium and high engine speeds.

Solex carburetor tuning

Characteristics of the base engine for the VAZ 2108

The front-wheel drive hatchback of the Volzhsky Automobile Plant had three doors, and with a total length barely exceeding 4 m (4006 mm), the weight of the car was only 915 kg. Given such technical characteristics and weight, the car could easily be accelerated by any engine. Over the long history of the car, several engines were installed on the VAZ 2108 model. Among the power units one could see:

The carburetor needs frequent cleaning

Supply system:

• low reliability of the installed carburetor (usually Solex), which requires frequent adjustment and cleaning;
• high sensitivity to gasoline quality; if low-quality fuel was used, this could result in detonation in the engine, as well as the need to clean the carburetor.

Ignition system:

• interruptions in cylinder operation;
• sensitivity of spark plugs to low-quality fuel.

Cooling system:

• the appearance of leaks;
• wear on the water pump blades.

To summarize, it can be noted that the proportion of faults, in comparison with other VAZ engines, does not exceed normal values. High reliability and maintainability, the quality of their manufacture for their time is confirmed by the fact that many of them still work properly on the VAZ line of hatchbacks. Motors are repaired and modified, obtaining additional output from them.

Also check out

1. Assemble the throttle mechanism.

1. In small diffusers, eliminate the errors that arose during the casting of the carburetor body (sagging, sharp corners are removed, the legs of the small diffuser also need to be given a wing shape). This shape is more aerodynamic.

1. In the accelerator pump, it is better to install 2 tubes in 2 chambers. It is important to position them exactly in the gap between the wall of the mixing chamber and the remote control.
2. Instead of the amplifier drive cam, install No. 4.

You need to try to smooth out the unevenness of the mixing chamber as much as possible, because the speed of the air that passes through it is about 120 m/s. If they are not eliminated, air turbulence will occur, which will impede the flow of fresh air.

Thanks to this tuning of the Solex carburetor , the dynamics of the VAZ will improve and the engine will become more responsive.

A lot of information about tuning VAZs can be found at the link.

Tuning the V8 power unit

Old car dream book

If we compare the engines of the above-mentioned family, they, of course, are noticeably inferior in dynamic, economic and environmental indicators to all modern engines. Agree that the power is 100 hp. With. - this is now the lower threshold for a passenger car, and the torque should be at least 150-200 Nm. Among the main areas of improvement of the line of engines for the G8 are the following:

• replacing the carburetor in the power supply system with injection;
• increase in engine displacement;
• work to change the exhaust gas intake and exhaust system;
• installation of a direct-flow muffler;
• carrying out work to improve or replace installed equipment.

Most often, owners of used V8s, which have engines with a volume of less than 1.5 liters, adjust their displacement to fit the VAZ 21083 modification. This does not change the engine weight significantly, but the output, taking into account the dynamic performance of low-speed traction and reduced consumption fuel increases significantly. The price of such work is low.

Eight car

In the section Choosing a car or motorcycle, answer the question What is the difference between an eight and a nine? asked by the author Yergey Tolmachev the best answer is the VAZ-2109 car differs from the VAZ-2108 car in its five-door body and minor changes in the engine power system. The engine is equipped with a cold air intake that takes air directly under the radiator trim. It is made of polypropylene and mounted above the radiator of the engine cooling system. The intake is connected to the air filter thermostat by a polypropylene air duct; the body frame is of a different shape, with two openings for the front and rear doors. The front side doors and their mechanisms have the same structure as the doors of the VAZ-2108 car. The only difference is in size. The rear side doors are similar in design to the front doors, but differ slightly in the design of the door locks. The locks are not locked from the outside with a key and are equipped with an additional lock against opening the lock from the inside. The lever for this lock is located at the end of the door under the outer lock. If you move the lever down before closing the door, it will be impossible to open the door from the inside. It will only open with the outside door handle. Features of the device of the VAZ-21081 car. This car is equipped with a VAZ-21081 model engine with a reduced displacement (1.1 l) and only a four-speed gearbox. The body and all other components and mechanisms are the same as on the VAZ-2108 car. The engine (compared to the 2108 model) has a different cylinder block, cylinder head, crankshaft and camshaft. Due to the reduced engine displacement, a carburetor with different calibration data is installed, as well as a slightly modified exhaust system. Features of the design of VAZ-21083 and VAZ-21093 cars. These cars differ from the VAZ-2108 and VAZ-2109 cars by installing a more powerful 21083 engine with a displacement of 1.5 liters. In addition, they only use a five-speed gearbox. Some vehicles may have a digital ignition system installed. Engine 21083 has a cylinder block with an increased cylinder diameter (82 mm). The diameter of the pistons and the diameters of the intake valves and channels in the cylinder head have also been increased. The carburetor is installed with different calibration data. Features of the design of VAZ -21099 cars. The VAZ-21099 car differs from all the cars described above in its four-door sedan-type body. Its body is three-volume, that is, it is divided by partitions into three volumes: the engine compartment, the interior and the luggage compartment with a volume of 0.43 m*. In terms of design and layout, the VAZ-21099 car is completely similar to the VAZ-21093 car (except for the rear part of the body). It is also equipped with a 21083 engine with a displacement of 1.5 liters and a five-speed gearbox. It is possible to install an instrument panel.

Design Features

The main feature of the internal combustion engine, by analogy with sample 2108, was the use of a belt drive on the timing pulley. In addition, the engine diagram has nuances:

• the camshaft remained inside the cylinder head, that is, on top of the block;
• non-contact ignition from a distributor, switch and coil was used;
• to reduce costs, parts from 2108 are used: crankshaft, flywheel and connecting rods, intake manifold and block;
• the pistons were created in collaboration with Kolbenschmitd and Porsche; instead of tin, a microprofile coating was used to retain lubricant on the surface;
• rings are chrome plated to increase service life;
• cylinder head with increased valve size of 37 mm.

ICE design
The modernization also affected the cooling system pump, but the service life of this unit increased slightly. As a result, the increased volumes of the combustion chambers added only 6 liters. With. power, but the gearbox ratios were not selected and the design of the intake manifold was improved. To make the internal combustion engine recognizable, AvtoVAZ management decided to paint blocks 21083 blue.

Specifications

Before we begin to describe the process of refining and increasing the power of the VAZ 2109 carburetor engine, it is worth understanding what power units were installed on the vehicle, and also consider the main technical characteristics.

During the production process, the “nine” was equipped with three options for carburetor engines:

21081 (1.1 8V)

2108 (1.3 8V)

21083 (1.5 8V)

Settings

1. Remove the minus terminal from the battery and the air filter.
2. Slightly open the bolt that secures the linkage to the choke lever.
3. Turn the air damper lever until it is completely open.
4. In the cabin on the instrument panel there is an air damper drive lever - press it all the way.
5. Pull the rod all the way out and tighten the bolt that secures the rod to the air mixture lever.
6. Pull the air damper control lever on the instrument panel all the way. If the air damper does not close completely after this, then slightly open the bolt securing the traction cover and, moving the cover, completely close the throttle damper. The bolt can now be tightened.
7. Place the minus terminal and filter in place.

Tuning process

Do-it-yourself VAZ 2109 engine tuning begins with removing the engine from the car. So, you will have to turn off the power supply, ignition system and other systems. So, let's look at all the stages of modifying the engine yourself. It is impossible to carry out complete tuning with your own hands, since you will still have to contact a car service at some stages.

Removing the motor

To remove the engine you will have to go through a certain process of disconnecting and dismantling the auxiliary systems. So, let's get started with the process:

1. Remove the battery and holding shelf.
2. We remove the air filter and carburetor.
3. We remove the ignition elements that are located in the engine compartment.
4. Drain the coolant and engine oil.
5. We unscrew the gearbox from the internal combustion engine.
6. We dismantle the radiator to make it easier to remove the engine.
7. We take out the engine CV joint.
8. Unscrew the engine mounts.
9. We remove the hood and dismantle the engine.

The described process is not complete, but only the basic actions that need to be done.

Disassembling the power unit

Disassembling the power unit is done in a few hours. So, first you need to dismantle the cylinder head cover and the oil pan. It is best to carry out this operation on a special stand.

After this, we begin to remove the main components. Unscrew the bolts securing the cylinder head and cylinder block. Then, we set the head aside and work directly with the cylinder block. So, let's look at what you have to remove:

1. Unscrew the yoke and remove the crankshaft. First we dismantle the pulley.
2. We dismantle the water and oil pump.
3. We take out the piston group. We dismantle the connecting rods. If there is, you need to remove the sleeves.
4. Now, the block is ready for further manipulations.
5. The last step is washing the parts and the block.

Once the block is disassembled, you can proceed to disassembling the cylinder head.

1. Remove the camshaft cover.
2. We remove the camshaft.
3. We dry out the valves.
4. Remove the springs and seals.
5. We take out the valves.
6. We knock out the saddle and guide bushings from the head.
7. We wash the parts and the base of the head.

Determining Rework Priorities

To increase the power of the VAZ 2109 carburetor engine, you will need to purchase a piston group, valves, camshaft, connecting rods and crankshaft. All these parts must be lightweight and manufactured by tuning manufacturers.

Thus, the piston group, valves and seats are suitable for ATI. It is best to install bronze guide bushings made by the American manufacturer K-line. The crankshaft and camshaft are purchased from the German company TDR.

Working with the cylinder block

To begin with, the cylinder block must be bored for new pistons, respectively, with a size of 82 mm. Then, the crankshaft and new bearings, which come with the main part, are installed.

To make everything work like a clock, you need to install a lightweight tuning clutch manufactured by Sachs. After the clutch is attached to the shaft, balancing must be done. It is advisable to carry out the operation on a special stand.

We assemble the piston assembly, namely, we attach the pistons to the connecting rods. Then, you can begin the so-called “dressing” process. This refers to the attachment of connecting rods with pistons to the crankshaft. We install the crankshaft oil seals and bearings. We install the yoke and you can fix the pallet. Then, the remaining auxiliary components, such as the pulley, water pump and roller, are assembled.

Conclusion

You can tune the VAZ 2109 carburetor engine yourself in the garage. The modification described in the article is carried out in a month and its cost, if you buy new parts, will cost about 4000-5000 dollars. Of course, such a modification is impractical from an economic point of view, but there are car enthusiasts who carry out this type of tuning.

There are many options for tuning the standard VAZ-2109 unit. On carburetor and injection models, it is cheaper to use chip tuning. Along with completely disassembling the engine, you will have to deal with the systems associated with it. The gas exhaust system undergoes changes most often. We'll tell you how to perform engine tuning on a VAZ-2109 car.

Repair

Repairing a VAZ 21083 engine with your own hands is quite simple. The main thing is to know the cause of the breakdown. Many owners of cars with a well-known engine have encountered common problems over the years. Thanks to this, it was possible to identify the main symptoms of impaired engine operation and find measures to get rid of them:

1. Unpleasant knocking is often the cause of changes in valve clearance. Adjustments are made every 50 thousand km.
2. The engine starts to stall. With such a symptom, it is worth measuring the compression.
3. The car will not start after being parked for a long time. The reason often lies in electronics. The repair measure is to diagnose the car at a service station.
4. Fuel consumption has increased - often this malfunction is the result of carburetor contamination.

Repairing the VAZ 21083 engine in service centers is quite simple due to the high prevalence of the car in Russia.

The best Lada model

VAZ 21099 was equipped with several types of engines. The most widespread power unit installed on VAZ 21099 carburetors was the VAZ 21083 engine. This gasoline 4-cylinder 8-valve engine became the founder of a whole family of engines that were mounted on all cars from the Lada Samara-2, Lada 110 model series " and "Lada Priora". Among its descendants is the naturally aspirated injection VAZ 2111-80. It was this engine that was most often installed on the VAZ 21099 injector.

It is difficult to carry out a major overhaul of the engine of a VAZ 21099 car on your own, but if the malfunctions are caused by breakdowns of attachments or ignition, cooling and fuel supply systems, then they can be repaired without contacting a car service center.

Modification Basics

The goal of any changes is to increase power and improve dynamic performance. The tuning unit becomes more durable. The concept of high-quality modernization includes the installation of updated elements:

• cylinder head;
• sports receiver;
• intercooler or turbine;
• camshaft;
• piston group.

In the process of working on the cylinder head, the shape and diameter of the intake valves and combustion chamber change. Often, the VAZ-2109 is equipped with spare parts from other cars, for example, an additional carburetor and manifold, which are taken from the Oka. Such a modification is not possible if your VAZ-2109 has an injection model of the power plant.

Do-it-yourself installation algorithm

VAZ 21093 carburetor tuning

Here's what to do:

• Take two Solex carburetors;
• Bring them into proper condition and equip them with a repair kit;
• Purchase two manifolds from the Oka car, which will serve as the basis for the intake tract (you also need to make an adapter manifold yourself).

Note. You can install two carburetors on the “nine” without installing an adapter, but then you will have to cut a lot, connect, etc.

• Next, you need to synchronize the operation of the carburetors by opening the dampers on both of them.

Advice. It is advisable to use rods from Ozone as a drive for the dampers, but not cables from Tavria, which stretch.

• After installing the carburetors, we connect the fuel hoses and two return lines through tees;
• Be sure to plug the fitting on one of the collectors;
• We start the car (half a turn) and check everything.

The best tuning of the Solex carburetor for VAZ 21093

Pros and cons of a double carburetor on the “nine”

Tuning carburetors on a VAZ 2109 is a responsible but entertaining process. Before carrying out it, it is recommended to study useful photos - materials, diagrams and drawings, watch a video review, and leaf through the instructions. As a result, we carry out modernization with our own hands, which will definitely come in handy.

Increasing the power of a carburetor engine

What is engine tuning? Typically, this is an increase in engine dynamics and power. Various components are modified and subjected to grinding, polishing and boring. Tuning the VAZ 2109 engine can be easily done independently. To do this, various methods are used, depending on the amount of money the owner of the vehicle has. The most expensive tuning option is replacing the standard engine with a more powerful power unit.

Engine tuning options

VAZ 21093 engine tuning

As mentioned above, engine tuning involves several methods. They all have both their advantages and disadvantages.

Engine modernization in the first way

This option involves installing and replacing the following components:

• Lightweight connecting rods, which fit the size 121 mm.
• A lightweight crankshaft, the piston stroke of which should be 78 mm.
• Lightweight piston rings.
• Cylinder head borrowed from Lada Kalina.
• Forged pistons having a diameter of 82.5 mm.
• Camshaft size 11.3 mm.

Note. This modification of the engine gives considerable power, which in l/s is equal to 98. This also makes it possible to reach a maximum speed of 183 km/h.

Easy tuning of the VAZ 2109 engine

Method two

This method involves upgrading the engine by interfering with the operation of the transmission and carburetor. In this case, such modernization will not require too high financial costs, unless, of course, the work is carried out on its own. So:

• The first step is to install a new filter, which should have a diameter of 70 mm. This filter must have a direct-flow outlet device. This will make it possible to increase engine power by 10 l/s.
• We install a 5-speed transmission.
• We install a new oil cooler.

Option three

This method of engine modernization involves the installation of the following parts:

• New oil nozzles.
• Lightweight pistons.
• Lightweight crankshaft.
• New gearbox.
• Lightweight flywheel.
• Improved grip.

In addition to the above, a lot of new components are installed on the car, including a non-contact ignition system, a sports muffler (see: We do high-quality replacement of the muffler on a VAZ), a copper radiator, and so on.

Carburetor

Carburetor tuning

This part of the car is given special attention when improving the engine. In particular, the carburetor is replaced along with other parts:

• First of all, the spring is removed from the vacuum drive of the second chamber damper. This gives a good increase in power.
• You can also modify the vacuum drive by inserting a homemade wire ring into the design.
• The diffuser is being replaced.
• The pump nozzle is being replaced.

Tags: carburetor, DaAZ, Solex

Comments 90

DON'T TURN YOUR SOCKS INTO A CAMERA :))) Zhenya is a good guy, but watch the video with Nail Poroshin's carbam. The French made a second spout in the second chamber so that the first one would not “save money.” (morons, they couldn’t come up with anything better.) Zhenya is depressing everything in the cell - and there he is so impudent, mom, don’t worry!

Nail Poroshin is a smart person) you can see he knows carburetors inside and out)

Nailya Poroshina is also worth watching)

At first glance, they seem like sensible videos, but only at the beginning... But it seems to me that there is also a downside, like a conversation...

And here is Neil's video about adjusting the XX

Elephants already have many pros and cons

What exactly are the pros and cons? Tell me in a nutshell

Elephants already have many pros and cons

No PER! Everything must be regulated and work strictly according to Solex documentation. And there it was conceived that through the second exhaust pipe, when the second shock absorber is closed, air is drawn into the first nozzle, rather than fuel being sucked in. Although a nozzle was installed on the Nivovsky Solex, the requirements for fuel supply are higher, and this additional fuel intake is taken into account in the adjustments.

I look with my mouth open, YOU ARE THE BEST TEACHER, God bless you

Thanks of course, but I'm new to this topic