The engine is the main power unit of any car, on which both its power and dynamic characteristics depend. VAZ-2107 models are equipped with four-stroke engines, each cylinder of which has two valves. Older cars are equipped with a carburetor engine, and new ones are equipped with an injection engine.
Car engine
Engine type: L4 Engine location: front, longitudinally Supercharging: no Engine power, hp: 71 Achieved at rpm: 5600 Engine volume, cm 3: 1452 Torque, N*m / rpm: 110 / 3400 Maximum speed, km/ h: 150 Acceleration time to 100 km/h in sec.: 17 Recommended fuel: AI-92 Fuel consumption (in the city), l/100 km: 9.6 Fuel consumption (out of town), l/100 km: 6.9 Fuel consumption (combined cycle) , l/100 km: 9.5 Number of valves per cylinder: 2 Gas distribution system: overhead valve with overhead camshaft Power system: carburetorTechnical characteristics of VAZ-21074 injector
The most significant feature of the VAZ-21074 model that appeared in the early 80s, which distinguished it from other modifications of the “seven”, was its equipment with a 1.6-liter VAZ-2106 engine, which initially only ran on gasoline with an octane rating of 93 or higher . Subsequently, the compression ratio was lowered, which made it possible to use lower grade fuel.
Table: technical characteristics of VAZ-21074
| Parameter | Meaning |
| Engine power, l. With. | 75 |
| Engine capacity, l | 1,6 |
| Torque, Nm/rev. per minute | 3750 |
| Number of cylinders | 4 |
| Cylinder arrangement | in-line |
| Acceleration time to 100 km/h, seconds | 15 |
| Maximum speed, km/h | 150 |
| Fuel consumption (city/highway/mixed mode), l/100 km | 9,7/7,3/8,5 |
| Transmission | 5 manual transmission |
| Front suspension | independent multi-link |
| Rear suspension | dependent |
| Front brakes | disk |
| Rear brakes | drums |
| Tire size | 175/65/R13 |
| Disk size | 5Jx13 |
| Body type | sedan |
| Length, m | 4,145 |
| Width, m | 1,62 |
| Height, m | 1,446 |
| Wheelbase, m | 2,424 |
| Ground clearance, cm | 17 |
| Front track, m | 1,365 |
| Rear track, m | 1,321 |
| Curb weight, t | 1,06 |
| Gross weight, t | 1,46 |
| Number of doors | 4 |
| Number of seats | 5 |
| Drive unit | rear |
The dynamic performance of the VAZ-21074 is inferior to most budget foreign cars, but domestic car enthusiasts appreciate the “seven” for other qualities: spare parts for the car are inexpensive and publicly available, even a novice driver can repair almost any component and unit on his own. In addition, the machine is extremely unpretentious and adapted for operation in Russian conditions.
Video: the owner of a VAZ-21074 injector shares his impressions of the car
The engine from the VAZ-2106 was installed on the VAZ-21074 without changes: among other things, the camshaft chain drive was left, which, compared to the belt drive (used in the VAZ-2105), is more durable and reliable, although noisier. There are two valves for each of the four cylinders.
Compared to previous models, the gearbox has been noticeably improved, featuring a fifth speed with a ratio of 0.819. The gear ratios of all other speeds have been reduced in relation to previous analogues, as a result of which the gearbox operates more “softly”. The rear axle gearbox, borrowed from the 6, is equipped with a self-locking differential with 22 splines.
The DAAZ 2107–1107010–20 carburetor, which was installed on the VAZ-21074 until 2006, established itself as a fairly reliable mechanism, which, however, was very sensitive to fuel quality. The appearance of the injector added to the attractiveness of the model, thanks to new capabilities: now it was possible, by reprogramming the control unit, to change the engine parameters - to make it more economical or, conversely, powerful and responsive.
VAZ-21074 is equipped with a 75 hp engine. With. volume 1.6 l
The front pair of wheels has an independent suspension, the rear one has a rigid beam, making the car quite stable when cornering. The fuel tank holds 39 liters and allows you to travel 400 km without refueling. In addition to the fuel tank, the VAZ-21074 is equipped with a number of other refueling tanks, including:
- cooling system, including a radiator, engine cooling jacket, expansion tank. The system is filled with coolant with a volume of 9.85 liters;
- 5-speed manual transmission housing - 1.35 liters of TAD-17 oil;
- engine crankcase - 3.75 liters of engine oil;
- rear axle - 1.3 liters of TAD-17 oil;
- steering column housing - 215 ml hypoid oil;
- windshield washer - 2 liters of liquid;
- hydraulic clutch - 200 ml of brake fluid.
For the anti-corrosion coating of the bottom, polyvinyl chloride plastisol D-11A is used. Having a maximum speed of 150 km/h, the car accelerates to “hundreds” in 15 seconds. From its closest predecessor, the “five,” the VAZ-21074 received a brake system and a similar appearance. The two models differ:
- shapes of the trunk and hood;
- radiator grilles;
- rear lights;
- chrome trim on the bumpers.
Among the differences between the VAZ-21074 and VAZ-2105 is the shape of the rear lights
About the VAZ 2107 car
VAZ 2107 was developed at the VAZ factory.
The designed model was named VAZ 2107. This modification of the VAZ 2107 is equipped with a 4-door body type. sedan. The model is capable of delivering up to 71 hp. The car has a 1.5 liter engine. The model is capable of driving at a maximum speed of up to 150 km/h. The VAZ manufacturer recommends “feeding” the car with AI-92 fuel. Dimensions of the VAZ 2107 are 4.14×1.62×1.44 m. A car can carry no more than 5 passengers. The total weight of the vehicle is approximately 1030 kg. The maximum possible vehicle weight is 1430 kg. The engine is the main power unit of any car, on which both its power and dynamic characteristics depend. VAZ-2107 models are equipped with four-stroke engines, each cylinder of which has two valves. Older cars are equipped with a carburetor engine, and new ones are equipped with an injection engine.
For whom was the VAZ 2107 140 hp intended?
Initially, the model was produced in small quantities by pre-order. Basically, these cars were used by law enforcement agencies: the police and the KGB.
VAZ-21079
But in the mid-90s, the public became interested in the powerful seven. Therefore, this car entered the free market, but it was not possible to achieve a large sales volume. The cost of the model was 1.5 times higher than the regular VAZ-2107, and it was purchased at an affordable price. In addition, it had high fuel consumption and an unreliable exotic engine.
VAZ-2107 engine design
Before we move on to describing the characteristics of the engine, we will talk in detail about all the elements of its design so that you can imagine exactly how the power unit works. Consists of the following main components:
- cylinder block. The heaviest component made from cast iron. This is where the cylinders are located, which are placed in one row. In addition, the block has passages for coolant, which prevents engine overheating during operation;
- the crankshaft, which transmits engine rotation to other components of the car. It also has quite a lot of weight. The crankshaft supports (cranks) are made of metal, which is hardened by high-frequency currents for maximum strength;
- connecting rods with piston pins made of forged steel. These elements are constantly subjected to high loads;
- pistons with compression and oil scraper rings;
- cylinder head. This part is made from a durable but very lightweight aluminum alloy. To prevent lubricant leakage, the cylinder head is equipped with a sealing gasket;
- a flywheel that is used to start an engine. It is in clutch with the starter, which responds to turning the key in the ignition;
- timing mechanism, which includes the camshaft and valve train.
The car engine is a perfect mechanism, in which the lubrication and cooling systems and supply of the air-fuel mixture are well thought out.
Characteristics of the VAZ-2107 engine
One of the main characteristics is the engine power of the VAZ-2107, which can vary depending on the modification of the car. For example, since its appearance on the domestic market (1976), three models with carburetor engines have been produced:
- VAZ-2107 1.5: engine capacity 1451 cm 3, power 72 kilowatts;
- VAZ-21072 1.3: volume 1290 cm 3, power 64 kilowatts;
- VAZ-21074 1.6 l. s: engine capacity 1569 cm 3, power 74 kilowatts.
In addition, the manufacturer has released two modifications of the car with an injection power unit - 2107i 1.6 (engine power 70 kilowatts) and 1.6MT (73 horsepower). It is impossible not to mention the 21073 1.7 model with central injection of the air-fuel mixture. This type of “seven” uses AI-95 gasoline as fuel (other models use AI-92), has an engine capacity of 1689 cm 3 and boasts the highest power of 76 horsepower.
Article published 06/27/2014 08:06 Last edited 01/04/2015 12:15
At the beginning of 1980, the Volzhsky Automobile Plant pleased Soviet car enthusiasts with the first-born of the “2nd generation” called the VAZ 2105. The car had rear-wheel drive, was a sedan type with traditional four doors and was designed for five seats. “Five”, and this is how this new product began to be called, was born under the influence of extensive improvements to the VAZ-2103 car. The popularity of this model comes from figures that indicate that from 1980 to 2005 about two million “fives” were produced. During this time, subtypes of the “VAZ-2105” and “VAZ-21051” models were produced with “2101” 1.2-liter and “2105” 1.3-liter units.
The car's interior was significantly improved, more comfortable seats equipped with headrests appeared, the instrument panel was updated, door trim appeared, and most importantly, the driver's seat became noticeably more comfortable.
The “five” was the first to test the use of special “block headlights” and all-molded upholstery of the Lada interior doors. In addition, instead of a traditional chain, a toothed belt was placed in the gas distribution mechanism, which contributes to more powerful traction of the car. Later, this belt began to be introduced into VAZ cars with front-wheel drive. Elements of foreign comfort also appeared in the VAZ-2105 in the form of a heated rear window.
At the beginning of its existence, the “five” was produced with a 1.3-liter carburetor engine. and a power of 64 horsepower. However, later the engines began to be improved; they began to introduce a 69 horsepower engine with a modernized VAZ-21011 engine. Already in the 90s, engines with a volume of up to 1.5 liters were completely discontinued, leaving only a modification in the form of the VAZ-21053.
For the activities of law enforcement agencies, they began to produce VAZ-21054 vehicles with an additional second battery and gas tank. Since the beginning of the 2000s, a program for introducing additional equipment into the VAZ-2105 has been launched. The car was now divided into 2 versions: “norm” and “standard”. For export abroad, the VAZ-21057 model was designed, which was similar in characteristics to the VAZ 21053, but had a right-hand drive. Interestingly, such a model, and even with a 1.5 liter engine, was produced in the 90s for English consumers.
In 1984, the no less popular VAZ 2104 car appeared. It was a five-seater station wagon with a traditional layout, which classified it as the 2nd generation of classic cars, compared to the VAZ-2102. In the same year, the “two” was produced simultaneously with the VAZ 2104. For sale abroad, the “four” was given the name Lada Nova Break. Compared to its predecessor, the VAZ 2104 has been significantly improved. The car acquired straight lines in the body design, special block headlights appeared, which were located behind and in front of the car. In addition, the body was equipped with a more aesthetic aluminum bumper. There are also quite a few new items in the cabin. So, the doors were sheathed with denser material, new seats appeared, and the instrument panel took on a new look. The Four was equipped with an improved rear suspension, and the interior became much more spacious thanks to folding seats. From the very beginning, the car was produced with a 1.3-liter carburetor engine.
The car was produced abroad in a modification with a 1.7-liter injection engine. In separate series, starting in 1999, the production of the VAZ-21045 car with a diesel engine began. Since the beginning of the 2000th year, the “four” began to be produced in three subtypes: “luxury”, “standard” and “norm”.
Are there other unusual “sevens”?
Lada Riva 21077
VAZ-21079 with a 140 hp rotary piston engine. With. is a unique example of the Soviet automobile industry. But there were other interesting modifications of the “Seven”. For example, Lada Riva 21077, which was supplied to the British market. In 1989, 45,000 copies of this model were imported into the UK. The steering wheel of this car was located on the right. The engine was equipped with a timing belt drive.
There was another export option - VAZ-210771 for China. She received a 66 hp engine. volume of 1.4 liters for 76 gasoline.
VAZ-2107
Since 1982, the Volzhsky Automobile Plant began producing the VAZ-2107. For export, this car was called Lada Riva or Lada 1500SL. Its distinctive feature is the chrome radiator grille, which gives it a special look compared to its peers. The “Seven” is considered by car enthusiasts to be the most comfortable car among the “2nd generation” Zhiguli models. From the very first days of production, these cars were equipped with carburetor engines with various volumes, ranging from 1.3 liters to 1.6 liters. At the very beginning of 1991, a variation of the “seven” appeared for foreign consumers called the VAZ-2107. This car already had central fuel injection and a 1.5-liter engine. For special law enforcement agencies, cars with a rotary piston engine were produced.
VAZ 2107 was produced from 1982 until 2012. During this time, he managed to become a truly people's car. And no wonder. Cheapness, good reliability of components and assemblies, as well as the ability to repair a car almost “on the knee”. As you know, the “heart” of a car is the engine. And in this article the VAZ 2107 engine will be discussed in detail.
What kind of engine can be installed on the “seven” instead of the standard one?
The driver begins to think about changing the engine when, for some reason, he is no longer satisfied with the operation of the standard equipment. In general, the 2107 model is excellent for various kinds of technical experiments and tuning, but the rational approach to choosing new equipment has not yet been canceled.
Therefore, before you even think about a new motor for your swallow, you need to weigh the pros and cons, namely:
Engines from other VAZ models
Naturally, engines from cars of the same family can be installed on the VAZ 2107i without significant modifications and loss of time. Experienced car enthusiasts advise taking a closer look at engines from:
These are more modern power units with an increased number of “horses”. In addition, the engine dimensions and connection connectors are almost identical to the standard equipment of the “Seven”.
Engines from foreign cars
Imported engines are rightfully considered more reliable and durable, so the idea of installing a foreign-made engine in a VAZ 2107i often excites the minds of drivers. It must be said that this idea is quite feasible if we take Nissan and Fiat models from 1975–1990 as donors.
The thing is that Fiat became the prototype of the domestic Zhiguli, so structurally they have a lot in common. And Nissan is also technically similar to Fiat. Therefore, without significant modifications, you can install engines from these foreign cars on the VAZ 2107.
Rotary power units
On "sevens" rotary engines are not that uncommon. In fact, due to the specifics of their work, rotor mechanisms can significantly optimize the operation of the VAZ 2107i and give the car acceleration and power.
An economical rotary engine ideal for the 2107 is a modification of the RPD 413i. The 1.3-liter unit develops power up to 245 horsepower. The only thing the driver should know about in advance is the drawback of the RPD 413i - a service life of 75 thousand kilometers.
Today, the VAZ 2107i is no longer produced. At one time it was a good car at an affordable cost for living and working. The injection modification of the “Seven” is considered to be maximally adapted to Russian operating conditions; moreover, the car is easily amenable to various kinds of under-hood upgrades and alterations.
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What engine can be installed on this car?
Initially, 2 types of engines were installed on the VAZ 2107 model, these are:
- , with a working volume of 1.5 liters
- VAZ 2106, with a working volume of 1.6 liters
There were also 1.3 L and 1.2 L engines, but they are very few in number and practically never found.
It is also possible to install an engine from a VAZ with front-wheel drive, but it is too labor-intensive and unjustified.
This is interesting! Sometimes the English letter “i” is added before the name of the car. This means that the VAZ 2107 engine is an injector.
Injector – fuel sprayer. Nozzle. The principle of operation of injection gasoline engines is very similar to diesel engines.
Where is the engine number
The engine number is unique to each vehicle. This is a kind of model identification code. On injection-powered "sevens" this code is stamped out and can be located only in two places under the hood (depending on the year of manufacture of the car):
All designations within the engine number must be clearly readable and not cause double interpretation.
Engine VAZ 2103
Specifications
The main characteristics of the engine are presented in the table below:
| OPTIONS | MEANING |
| Year of production of engines of this type | 1972 – our time |
| Supply system | Injector/carburetor |
| engine's type | Row |
| Number of pistons | 4 |
| Cylinder block material | cast iron |
| Cylinder head material | aluminum |
| Number of valves per cylinder | 2 |
| Piston stroke | 80 mm |
| Cylinder diameter | 76 mm |
| Engine capacity | 1452 cm 3 |
| Power | 71 l. With. at 5600 rpm. |
| Maximum torque | 104 Nm at 3600 rpm. |
| Compression ratio | 8.5 units |
| Oil volume in crankcase | 3.74 l |
This engine uses AI-93 fuel. In practice, motorists can fill in completely different fuels. The most common deviations from the norm are the flooding of AI-92 and AI-95. You can read more about this below.
- According to available data, fuel consumption in urban conditions is 9.4 liters per 100 km.
- On a flat road at cruising speed it will already be 6.9 liters per 100 km.
- In mixed mode, consumption will be from 8 to 9 liters per 100 km. Such figures do not allow us to call this engine economical, but in this case a lot depends on the driver himself.
- Another parameter that depends on the driver is oil consumption per 100 km. For the average driver of a car with this engine, it is 700 g per 100 km. This, of course, is not small, but with careful driving you can reduce this consumption down to 450-500 g/100 km.
- The weight of the 2103 engine when fully assembled is 121 kg.
Its dimensions (characteristics are indicated in millimeters):
Features of operation and maintenance
- Fuel selection
It was said earlier that many drivers cannot decide on the type of fuel used for their engine on the VAZ 2107. And if with AI-92 everything is simple, since its composition is very similar to AI-93, then with AI-95 everything is not so smooth.
Increasing the octane number leads to an increased risk of valve burnout, but gives a small increase in power. The engine begins to run smoother and more stable.
But the designers still took into account the possibility of using AI-95 gasoline. You just need to correctly set the ignition timing on your car (if you have a conventional carburetor engine) or reflash the engine control unit (if your VAZ 2107 engine is fuel-injected). But usually even this is not required. Engines of this brand are very durable and not picky about the type of fuel (within reasonable measures).
- Change of oil
Changing the oil on any engine must be approached with the utmost seriousness. Poor quality oil can lead to not very pleasant consequences, such as accelerated wear of main components and assemblies.
The ability to select oil is a real skill. Taking well-known brands is not always safe, since you are very likely to come across a counterfeit from dishonest companies. At best, you will not receive the positive qualities that this company has. At worst, you will have to carry out major repairs.
Salon VAZ-21074
The design of all modifications of the VAZ-2107 family (including the VAZ-21074 injector) provides for the arrangement of components and assemblies according to the so-called classical scheme, when the rear wheels are driven and the engine is shifted forward as much as possible, thereby ensuring optimal weight distribution along the axles and, as a result, improving vehicle stability. Thanks to this arrangement of the power unit, the interior turned out to be quite spacious and was located inside the wheelbase, i.e., in the zone of best ride smoothness, which could not but affect the comfort of the car.
The interior of the VAZ-21074 turned out to be quite spacious and comfortable
The interior trim is made of high-quality non-glare materials. The floor is covered with mats made of non-woven material on a polypropylene base. The body pillars and doors are upholstered in semi-rigid plastic, covered on the front side with caprovelor; velutin is used for seat upholstery. The ceiling is finished with polyvinyl chloride film with a duplicated foam pad, glued to a base formed from plastic. Through the use of various mastics, layered bitumen gaskets and felt inserts:
- heat and sound insulation of the interior is achieved;
- vibration is eliminated;
- Metal components are protected from corrosion.
History and design of the injector
The debate about which system is better among specialists and car enthusiasts still does not subside. But let's leave this debate to the professionals. And novice car enthusiasts just need to know how this system works and how it works.
It is not at all necessary that car enthusiasts will need this knowledge for independent repairs. However, knowledge is power. This knowledge is needed at least so that the novice car enthusiast is not deceived by cunning mechanics from the service station around the corner.
The history of this device begins in 1951. It was then that a well-known woman installed such an injection system on the 2-stroke engine of a sports car. Then, in 1954, the famous and popular one also began to equip its engines with a new system.
Serial use of injectors began in the late 70s. Even then it was clear that this device worked better than conventional carburetor systems.
As a result, injectors completely replaced their “ancestors”. All modern cars are equipped with such distributed and direct electronic injection systems.
The principle of operation of the injector in the power system
The injection system is designed to deliver fuel by direct injection using an injector directly into the intake manifold of the cylinder. Therefore, cars with a distributed injection system are called injection cars.
The classification of the injection method depends on the principle on which the system operates, as well as where the injector is installed and how many there are in the car.
All modern cars perform fuel injection using a distributed system. That is, each cylinder has its own injector. The operating principles are based on signals from a microcontroller, which receives information from many sensors. Then, based on this information, the controller either opens or closes the injectors.
VAZ 2107 injector: device
VAZ 2107 cars have a distributed injection system. It works in conjunction with an electronic engine management system. It's called the ECU. Using numerous sensors, it controls the supply and quantity of air and fuel that enter the cylinders. Also, the ECU, if necessary, starts or turns off the fuel pump, controls the formation of a spark on the spark plugs, and also adjusts the ignition angles. In addition to all this, the ECU regulates the frequency at which the crankshaft rotates at idle, 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 the fuel and a fuel filter. Then, using the fuel pump, the mixture passes through the filter to the fuel rail. A special pressure regulator is mounted on the ramp, which regulates the process of supplying fuel to the VAZ 2107 injector nozzles.
Using this regulator, a pressure of 300 mPa is created, and excess fuel is sent back to the tank. The injectors open and close using electrical impulses that come from the electronic control unit. They are designed to ensure the simultaneous supply of the fuel mixture to the intake manifold of each cylinder at each crankshaft revolution.
How much of the combustible mixture enters the cylinders depends on the time at which the injectors are open. This time is adjusted by the controller based on information received from the sensors.
Sensors (VAZ 2107 injector) installed on the engine provide all the information necessary for this. For example, the crankshaft sensor provides information from which the controller calculates the time between pulses for the injectors. If the operating mode of the power unit is increased, the system increases the opening time of the injectors. 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 car's electrical network, so if the voltage drops, the opening time of the injectors increases. All operating modes of the motor and injector are controlled by the controller. This ensures adjustment of the composition of the fuel mixture and operation of the injectors on the VAZ 2107 “injector” car.
How does the injection system work on the "seven"?
How much fuel is supplied through the injectors to the cylinders is controlled using an electrical impulse from the ECU. The block calculates the amount of fuel the engine needs and also determines how long the pulse will be.
When the crankshaft begins to rotate, the very first impulse from the idle speed sensor causes the ECU to turn on all the injectors. The very first injection takes place every time you start. How long the pulse lasts depends on the temperature.
When the driver turns on the ignition, the fuel pump relay is activated and creates pressure in the fuel line. Next, the computer checks the temperature and calculates how much air and fuel is needed to create the mixture, and then delivers it to the engine. The VAZ 2107 injector, by the way, is more economical than its carburetor counterparts. This is achieved through more accurate dosage of fuel.
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 high fuel consumption and the low dynamics of the VAZ 2107 model. They don't criticize 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 people don’t like the products of the Russian automobile industry at all, so they criticize domestic cars in every possible way.
Today, if not all, then most drivers appreciate the injection system. And many began to install injectors on conventional carburetor cars. Today you can purchase a new or used kit, which includes everything necessary for the system to operate.
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”. The VAZ 2107 injector is much better than its carburetor counterpart.
↑ Differences between the VAZ-2107 with an injection engine and the carburetor version
The efficiency of the VAZ 2107i is higher than that of the carburetor version. The engine is easier to start in cold weather. This does not require long warm-up. At idle speed the engine is characterized by smoother and quieter operation.
The presence of an on-board computer allows for continuous monitoring of all processes. Information is displayed on the dashboard. In case of malfunctions, the computer control unit signals an emergency situation.
↑ Advantages of an injection engine
The injection power plant made it possible to achieve the following indicators:
The toxicity of exhaust gases complies with EURO II standards.
↑ Disadvantages of an injection engine
But along with undeniable advantages, the injector is more capricious.
However, it should be noted that the disadvantages of the model are offset by the advantages. With proper care and operation, the VAZ 2107i will last for a long time.
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