New engine for vaz 2107 carburetor. Reviews are only positive

The VAZ 2107 car was created on the basis of the 2105 model. New sedan designed for 5 seats, was equipped with a 5-speed mechanical box. The car was launched into the series in the 82nd year.

Initially as power unit used a carburetor engine from a VAZ 2103 car. Carburetor internal combustion engines were also installed on subsequent models and modifications. For export models 21073 a new injection unit has been developed. He had sufficient power, as well as efficiency. The engine displacement was 1.7 liters. Further, injectors began to be installed on all "sevens". It was over modern engine(VAZ 2107 injector) with a volume of 1.6 liters. This made it possible to ensure compliance with existing environmental standards.

Let's figure out what an injector is, see how it works, specifications.

History and device of the injector

The debate about which of the systems is better among specialists and motorists has not subsided so far. But let's leave these disputes to professionals. And novice motorists just need to know how this system works and how it works.

It is not at all necessary that motorists will need this knowledge to self-repairs. However, knowledge is power. This knowledge is needed at least so that the novice motorist is not deceived by cunning mechanics from the service station around the corner.

The history of this device begins in 1951. Exactly then famous company Bosch installed such an injection system on a 2-stroke engine of one sports car. Then, in 1954, the well-known and popular car manufacturer Mercedes also began to equip their engines with a new system.

The serial use of injectors began in the late 70s. Even then it was clear that this device works better than the usual carburetor systems.

As a result, injectors completely replaced their "ancestors". All modern cars equipped with such distributed systems, as well as direct electronic injection.

The principle of operation of the injector in the power system

The injection system is designed to supply fuel using direct injection using an injector directly into the intake manifold of the cylinder. Therefore, cars with a distributed injection system are called injector.

The classification of the injection method depends on the principle by which the system works, as well as where the injector is installed, and how many of them are in the car.

All modern cars carry out fuel injection using a distributed system. That is, each cylinder has its own injector. The principles of operation are based on the signals of the microcontroller, which receives information from a variety of sensors. Then, according to this information, the controller either opens or closes the nozzles.

VAZ 2107 injector: device

In VAZ 2107 cars, a distributed injection system is installed. She works with electronic system engine control. It's called an ECU. It uses numerous sensors to control the supply and amount of air and fuel that enter the cylinders. Also, the ECU, if necessary, starts or turns off fuel pump, controls the formation of a spark on the spark plugs, and also corrects the ignition angles. In addition to all this, the ECU regulates the frequency with which the crankshaft rotates for Idling and also, if necessary, starts the cooling fan and controls the cooling system.

Scheme of operation of the injection power circuit on the VAZ 2107

There is nothing complicated here. This scheme should not cause any difficulties even for beginners.

First, the fuel system starts with a tank that stores fuel and a fuel filter. Then, with the help of a fuel pump, the mixture passes through the filter to fuel rail. A special pressure regulator is mounted on the ramp, which regulates the process of supplying fuel to the injectors VAZ 2107 injector.

With the help of this regulator, a pressure of 300 MPa is created, and excess fuel is sent back to the tank. The nozzles are opened and closed by means of electrical impulses that come from the electronic control unit. They are designed to ensure that the fuel mixture is simultaneously supplied to the intake manifold of each of the cylinders with each revolution of the crankshaft.

How combustible mixture gets into the cylinders, depends on the time at which the nozzles are open. This time is regulated by the controller according to the information received from the sensors.

Sensors (VAZ 2107 injector) installed on the engine give all the information necessary for this. For example, the crankshaft sensor provides information on which the controller calculates the time between pulses for injectors. If the operating mode of the power unit is increased, then the system increases the opening time of the nozzles. The controller calculates the time based on information from the throttle valve, as well as the mass air flow sensor.

The ECU constantly monitors the voltage in the electrical network of the car, therefore, in the event of a decrease in voltage, the opening time of the injectors increases. All operating modes of the motor and injector are controlled by the controller. This ensures the adjustment of the composition of the fuel mixture and the operation of the nozzles on the VAZ 2107 "injector" car.

Ignition system

Traditional devices are not used here. As systems that provide ignition, the VAZ 2107 (injector) is equipped with one module, which consists of two coils, as well as electronics. There are no moving parts in the system.

How does the injection system work on the "seven"?

How much fuel will be supplied through the injectors to the cylinders is controlled by an electrical impulse from the ECU. The block calculates the amount of fuel that the engine needs, and also determines how long the pulse will be.

When the crankshaft starts to scroll, the very first pulse from the idle sensor causes the ECU to turn on all the injectors. The very first injection takes place every time you start. How long the pulse will last depends on the temperature.

When the driver turns on the ignition, the fuel pump relay starts and pressurizes the fuel line. Next, the computer checks the temperature and calculates how much air and fuel is needed to create the mixture, and then feeds it to the engine. VAZ 2107 injector, by the way, is more economical than its carburetor counterparts. This is achieved through a more accurate dosage of fuel.

Generator

VAZ 2107 injector, in addition to all these devices and sensors for the correct operation of the injection system, is also equipped with a generator. It is necessary to charge the batteries and power all consumers of electricity and the injection system as well.

How does the generator VAZ 2107 model work? The injector dispenses fuel into the cylinder, after which the car is set in motion. At this moment, the generator generates the necessary voltage to charge the battery and power the electrical equipment.

VAZ 2107: reviews

As for the reviews of the direct owners, they are, as always, very controversial. Many of the drivers and owners of this car complain about the high fuel consumption, the low dynamics of the VAZ 2107 model. At the same time, they do not scold the injector. Also, many drivers say that they are satisfied with everything in the design of the car, and in the design and operation of the power system. Some do not like the products of the Russian automobile industry at all, so they scold domestic cars in every possible way.

Today, if not all, then the majority of drivers appreciated the injection injection system at its true worth. And many began to install injectors on conventional carburetor machines. Today, you can purchase a new or used kit that includes everything you need to run the system.

How much does it cost to install an injector on a VAZ 2107? The price of this upgrade is about 20,000 rubles. But such a replacement will definitely pay for itself in the future.

So, we found out how the engine and generator work on the "seven". VAZ 2107 injector is much better than its carburetor counterpart.

"Seven" - the last representative of a series of rear-wheel drive cars VAZ. The seventh model was developed on the basis of the VAZ 2105 and differs in the shape of the seats, interior trim, the shape of lighting devices and engine power.

Initially, a one and a half liter engine from the VAZ 2103 was installed on the VAZ 2107. Subsequently the lineup engines installed on the "seven" was expanded. For different markets, cars were produced with engine sizes from 1.45 to 1.7 liters. It was the 1.7-liter engine that was the first to be equipped not with a carburetor, but with an injection power system. Subsequently, the VAZ 2107 injector completely displaced carburetor cars from the assembly line.

The principle of operation of the injection engine VAZ 2107

Unlike carburetor systems, where the air-fuel mixture is prepared in the carburetor chambers, the injection system involves fuel injection directly into the cylinders. Therefore, such a system is called a “port injection system”.

Injector systems are qualified depending on the principle of operation and the number of injectors. "Seven" is equipped with a separate injection system with 4 nozzles (one per cylinder). The VAZ 2107 injectors are controlled by the microcontroller of the electronic engine control unit. It regulates the flow of fuel into the cylinders depending on the operating mode, the position of the gas pedal and other parameters read by special sensors.

The ECU (electronic control unit) controls the amount of fuel and air entering the combustion chambers of the engine. In addition, it controls the formation of a spark on the spark plugs, changing the timing depending on the speed. The ECU also turns the fuel pump on and off, regulates the idle speed, controls the amount of CO in the exhaust gases, and the temperature of the coolant in the cylinder block. It all works in the following way.

Gasoline from the tank, passing through fuel filter, is pumped into the fuel rail. The latter has a pressure regulator that regulates the flow of fuel to the injectors. A pressure of 300 MPa is maintained in the fuel rail, and excess fuel is sent to the gas tank through the return pipeline.

The electronic control unit opens and closes the injectors, ensuring the supply of gasoline to the intake manifolds with each engine revolution. The amount of fuel entering the cylinder depends on the time during which the nozzle is open. The ECU calculates this time based on the readings of multiple sensors. The main indicators that affect the opening time of the nozzle are information from the mass air flow sensor and the throttle position sensor. The injector opening moment is determined based on the position of the pistons in the cylinder, which is transmitted to the computer by the crankshaft sensor.

Other parameters are taken into account:

• coolant temperature, which affects the combustion process of the fuel mixture;
• the voltage of the on-board network, on which the response time of the injectors depends;
• engine speed;
• exhaust gas composition.

Ignition system VAZ 2107 injector

The injection engine VAZ 2107 is equipped with an electronic ignition module, consisting of an electronic board and a pair of coils. Due to the absence of moving parts, the system is highly reliable and does not require regular maintenance. The moment of spark formation is determined by the engine ECU and depends on the speed crankshaft.

Advantages of injection models VAZ 2107

• Due to the optimal formation of the fuel mixture, the efficiency injection engine higher than the carburetor. Accordingly, the VAZ 2107 injector engine consumes less fuel and is more powerful than a carburetor engine with the same volume.
• Electronics regulates the engine speed, thanks to which it runs more stably at idle, stalls less often with an inept start from a standstill and starts up better in cold weather.
• Unlike a carbureted engine, an injection engine does not need frequent adjustment of the fuel supply and ignition systems.
• The optimal composition and amount of the fuel-air mixture entering the cylinders, as well as the presence of a catalyst, ensure a minimum content harmful substances in the exhaust. This is an important point from the point of view of ecology and health care.
• A hydraulic chain tensioner and hydraulic valve clearance compensators eliminate the need for manual adjustment mechanism and provide less noisy operation of the engine.
• The torque curve is more “smooth” - high torque is achieved in a larger rev range.

Note: the injection engine can be equipped with gas equipment of both the second and fourth generation. The latter option is more preferable - the fourth generation of HBO is more economical and prevents the possibility of "pops" in the engine.

Disadvantages of the injection model of the VAZ engine

In addition to the merits injection VAZ 2107 has some disadvantages:

Malfunctions of the injection engine VAZ 2107

The problems of the “seven” injection engine usually manifest themselves as follows:

• The engine is unstable.
• Fuel consumption VAZ 2107 increased.
• Exhaust gases have an increased content of CO.
• Dips when pressing the accelerator pedal.
• The engine “does not pull” (reduced power).
• To diagnose malfunctions of the injection system, it is necessary special equipment. In particular, in order to read error codes and check the readings of the sensors and the operation of the engine ECU, a special computer (tester) is needed. Therefore, the repair and diagnostics of the VAZ 2107 injector is carried out at specialized service stations. The most common cause of injector failure is clogged injectors.

Causes of clogged injector

Usually problems with the injection system occur when using low-quality gasoline. Heavy paraffins contained in such fuel settle on the walls of the system, blocking the fuel supply. Manufacturers of high-quality gasoline add detergent to it - a special additive that dissolves deposits. Low-quality gasolines contain too much paraffin, which forms deposits faster than detergents can handle them.

Deposits form more intensively at low temperatures, therefore, with frequent use of the car with a cold engine, the injector clogs more often.

Deposits can accumulate not only in the nozzles. Often couples settle on throttle, which leads to a change in the proportions of the air-fuel mixture entering the cylinders.

Deposits of substances contained in low-quality gasoline may also appear on reverse side plates intake valves. This can lead to burnt valve or detonation of fuel.

To clean deposits from the injection system, it is necessary to use special flushing fluid and equipment. You can wash the injector in a garage. This requires a syringe and flushing fluid. The latter is mixed with gasoline and poured into the injection system through a hose vacuum booster brakes. First, the operation is performed on a muffled engine, then on a running one. The mixture is fed into the running engine gradually, in small portions. As a result, deposits dissolve, enter the engine cylinders and burn there. In this case, clouds of smoke may appear for a short time coming out of the muffler.

VAZ 2107- a five-seater passenger car of a classic layout with a front longitudinal arrangement of the power unit and rear driving wheels. Engine - four-cylinder, four-stroke, eight-valve, in-line, carburetor or fuel injection system. The body of the supporting structure, all-metal, welded. body type - sedan.

On the car VAZ 2107 is installed carbureted engine models VAZ 2103 with a working volume of 1.5 liters. The modification of the VAZ 21074 car is distinguished by the engine of the VAZ 2106 model with a working volume of 1.6 liters.

In recent years, the production of this model produced modifications of the VAZ 2107-20 car with a VAZ 2104 engine with a working volume of 1.5 liters and VAZ 21074-20 with a VAZ 21067 engine with a working volume of 1.6 liters, equipped with fuel injection, mechanical part (cylinder block, connecting rod - piston group, crankshaft) of these engines is respectively identical to the VAZ 2103 and VAZ 2106 engines. More powerful generators and starters with planetary gears are installed on the VAZ 2104 and VAZ 21067 engines. The installation of engines with distributed fuel injection on vehicles, as well as the use of a gasoline vapor recovery system and catalytic converters in exhaust systems, made it possible to reduce exhaust gas toxicity and fuel consumption, and increase the reliability of starting the engine in cold weather. Body, chassis and transmission remained unchanged.

Predecessor - VAZ 2105, successor - Lada Granta.

Modifications VAZ 2107

• LADA-2107 (engine 2103, 1.5 l, 8 cells, carburetor)
• LADA-21072 (engine 2105, 1.3 l, 8 cells, carburetor, timing belt drive)
• LADA-21073 (engine 1.7 l, 8 cells, single injection - export version for the European market)
• LADA-21074 (engine 2106, 1.6 l, 8 cells, carburetor)
• LADA-21070 (engine 2103, 1.5 l, 8 cells, carburetor)
• LADA-2107-20 (engine 2104, 1.5 l, 8 cells, central injection)
• LADA-2107-71 (engine 1.4 l., 66 hp engine 21034 for gasoline A-76, version for China)
• LADA-21074-20 (engine 21067-10, 1.6 l, 8 cells, distributed injection, Euro-2)
• LADA-21074-30 (engine 21067-20, 1.6 l, 8 cells, distributed injection, Euro-3)
• LADA-210740 (engine 21067, 1.6 l, 53 kW/72.7 hp 8 cells, injector, catalyst) (2010)
• LADA-21077 (engine 2105, 1.3 l, 8 cells, carburetor, timing belt drive - export version for the UK)
• LADA-21078 (engine 2106, 1.6 l, 8 cells, carburetor - export version for Great Britain)
• LADA-21079 (rotary piston engine 1.3 l, 140 hp, originally created for the needs of the Ministry of Internal Affairs and the KGB)
• LADA-2107 ZNG (engine 21213, 1.7 l, 8 cells, central injection)

The tables below show technical characteristics of the car VAZ 2107 and its modifications.

common data

Engines

Transmission

Each owner of the domestic "seven" at least once faced with a situation where the lack of engine power became obvious and obvious. This is especially felt on a busy highway, when rangefinders are stubbornly ahead, you don’t want to back up in the “tail”, and you don’t have enough power to overtake in the minimum time when there is no oncoming car. , increasing the maneuverability of the car is not an idle desire. Sometimes such tuning of the VAZ-2107 engine can save the life and health of all those who are in the cabin at the time of increased danger.

It is no secret that in case of poor visibility on the highway, accidents most often occur due to the fact that the driver was unable to turn around and avoid the impact. It is the tuning of the factory VAZ-2107 engine that makes it possible to make it as “obedient” as possible, to increase the power of the “horses”, which are clearly not enough. For these reasons, all owners who have little technical knowledge, but along with this a great desire to tune the VAZ-2107 engine, strive to tune their car.

The factory engine of the VAZ 2107 car is not capable of much and the owners often complain about the lack of power

Of course, desire alone is clearly not enough, therefore, before performing practical actions, you should familiarize yourself with the recommendations of experienced car mechanics or owners of the "sevens" who have already performed engine tuning, introduced an injector instead of a carburetor.

Varieties of engine tuning options

To improve the traction characteristics of the “seven horse”, it is not at all necessary to drive it to car mechanics, many actions can be done independently without spending a lot of money, without provoking a serious hole in the family budget.

Of course, every motorist who decides on such actions really wants to know what mechanisms will be affected, and what will be the tuning of the VAZ-2107 engine. Carburetor, injector, cylinder block - this is only a small part of what can be done to increase traction.

Finalization of the cylinder head

The cylinder head is an undeniable part of any engine motor vehicle. It is located on the top surface of the block itself. It is she who creates the conditions for the operation of the engine, carrying out the process of combustion of the fuel mixture.

For this reason, car mechanics strongly recommend paying attention to this device, to the possibilities that it confidently stores in itself.

In terms of capabilities, the cylinder head can be considered as the widest springboard where you can perfectly “turn around”, introduce multiple technical ideas, thereby improving the technical characteristics of the engine itself.

The refinement of the BC head consists in turning two types of manifolds: intake and exhaust. It is impossible to call such actions easy, you will have to sweat, seriously tinker, because you have to work with cast iron, which is by no means a pliable material.

First, remove the cylinder head, clean it thoroughly, since on its surface there will definitely be residues of fractions from burnt fuel, old dilapidated gaskets.

You can clean the head using chemicals or gasoline, which you always have on hand in the garage. Well, if there is a drill available, you can attach a brush to it and carefully walk over the entire surface of the head with such a “handy” tool. This one will be of the highest quality, therefore it is recommended by most car owners.

Now each part will be revised separately. Initially, efforts are directed to the constructive improvement of the collector. First of all, it should be cleaned and polished. The polishing process should be continued until the size of the inner diameter of the hole reaches 32 cm.

This process will be carried out quickly if you have special cutters. If there are none, you can use a drill, on which a rag is wound and sandpaper is fixed.

After reaching the designated goals, the polishing process continues, but now in places of contact with such an important device, .

Further, at the junction of the intake manifold, it is easy to find a transition slightly protruding above the surface, it is this that needs to be removed. Such actions favor the acceleration of the penetration of fuel into the chamber, where it is directly burned.

First you will need to go through the drill with wound sandpaper in the indicated place, and then remove the sandpaper and go through only the drill to finally cut off the bushings.

The next process must be accompanied by a jeweler's precision, since the channels located next to the saddles will have to be polished. They must not be damaged.

This completes the actions with the collector, providing an improvement in the intake and exhaust gas mechanism, which helps to increase the engine power by at least fifteen "horses".

Compressor installation

You can also increase the efficiency of fuel injection, and, accordingly, increase the power of the engine, if you install a compressor on your "seven".

Most car mechanics recommend purchasing a PK05D compressor for this purpose, since it is he who has acceptable characteristics, and also its installation does not imply implementation in piston group, which favors the performance of tasks with optimal ease.

This compressor is much quieter, respectively, and the engine of the "seven" will also work almost silently.

In connection with the decision to introduce such a compressor, some parts in contact with it will also have to be replaced. In particular, you will have to replace the generator, water pump and crankshaft. You can borrow a V-ribbed belt from a Chevrolet Niva.

Now that all the mechanisms have been acquired, you can proceed to the direct implementation of the new compressor. You need to act according to the algorithm recommended by experienced car mechanics.

First, we carry out the dismantling process in sequence:

• remove the alternator belt;
• remove the air filter;
• remove all removed parts.

Put a special pipe on the compressor inlet and fix the filter. Branch pipes are mounted similarly only at the outlet. Next, it is important to connect the valve to the pipe, install the flange in the carburetor.

The carburetor and, of course, the compressor have fittings that should be connected with a blue hose. Fix all connections as securely as possible using clamps. Finally, it remains to adjust the tension of the alternator belt.

BC finalization

The "seven" has heavy pistons, if instead of them light analogs are installed, Engine efficiency increases. This is easy to explain, since the engine has to compensate for the increased inertia resulting from heavy connecting rods and pistons.

By installing light analogues, the engine balance increases. In addition, car owners can safely expect a significant reduction in friction.

You can effectively increase the performance of the engine by expanding its volume. Such an increase can be obtained by boring the BC, but such actions require practical experience.

Otherwise, you can simply ruin the engine, so they resort to boring the BC only when they have to repair old engines, which have only two options: either take a chance, squander the BC and give it a new life, or immediately go to a landfill.

Mounting the injector

If you install an injector on the VAZ-2107, the power of the engine will also increase, so those owners of the "sevens" who originally had a carburetor installed are ready to make an effort and install the injector with their own hands.

First, efforts should be made to properly place the components in the engine compartment. It is rational to place the ignition coil below the vacuum, since in this place the vibration force is minimal, in the same way the temperature does not take on high values, without causing overheating of the parts. In this regard, the service life of the ignition coil can only be increased by proper placement.

We carry out the wire, which in the future we will connect to the control unit.

It’s just impossible to get an adapter for the incoming fuel pressure regulator, you won’t be able to use an analogue of another car either, so you’ll have to turn to a turner for help, who can build such an important part.

Now all hoses are installed in the tank, except for the vacuum tube, which is soldered to a special platform. Next, a speed sensor is installed, a nut for the lamb probe, we line the wires for electrical wiring in sufficient quantities so that later the shortage of wires does not provoke problems. Nozzles with a ramp, filter and hoses are subject to obligatory flushing as a complete assembly.

Now you must remove the ignition and all mechanisms oriented to it. The next step is to carefully drain the antifreeze.

You will need to file all inlets to give them an egg shape. Next, the holes should be prepared for connecting new collector studs, along with channels through which antifreeze will subsequently be drained.

At the end, it remains to install the manifold, then the ramps, nozzles, receiver, all throttles, hoses and pipes, connect all the sensors.

This completes the refinement of the VAZ-2107 engine with the installation of the injector. The owner can immediately after the completion of all technical actions evaluate the improvement in the performance of the engine of his "seven".

Based on the algorithm described above, we can conclude that tuning the VAZ-2107 engine, installing an injector with your own hands requires increased attention and effort, however, any car owner can perform all these actions if he has a strong desire to improve the engine, increase the maneuverability of his own car.

The result of the work done can be safely boasted to friends, expecting well-deserved praise.

After such work, you can be sure that your “seven” has turned into a real swallow, overtaking cool foreign cars with amazing ease. And even if your “old woman” has been competing with her for many years, some “automobile youth” will definitely not be able to do it. It will be very difficult to catch up with you, in any case, you will definitely have to sweat.