The VAZ four-cylinder petrol engine with a displacement of 1.3 liters, which was installed on VAZ 2105 cars, has established itself as a fairly reliable, economical and easy-to-use power unit. The VAZ 2105 engine appeared in 1979 and, with minor changes, was able to last on the assembly line until 2006. Initially, this power unit had a carburetor power system, but later received a reliable injector, which made it possible to significantly increase engine power.
Specifications
Technical data of engine 2105:
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| OPTIONS | VALUES |
| Years of manufacture | 1979 — 2006 |
| Weight | 115 kg |
| Cylinder block material | cast iron |
| Supply system | carburetor |
| Type | in-line |
| Working volume | 1.3 |
| Power | 64 horsepower |
| Number of cylinders | 4 |
| Number of valves | 2 |
| Piston stroke | 66 mm |
| Cylinder diameter | 79 mm |
| Compression ratio | 8.8 |
| Torque | 94 Nm / 3400 rpm |
| Environmental standards | EURO 1 |
| Fuel | AI 93 |
| Fuel consumption | 8/100 km combined cycle |
| Oil | 5W-30 – 15W40 |
| Oil volume | 3.75 liters |
| When replacing, pour | 3.5 liters |
| Oil change is carried out | 15 thousand km |
| Motor life | |
| - according to the plant | 125 |
| - on practice | 200 |
The engine is installed on VAZ 2104, VAZ 2105 and VAZ 21072.
VAZ 2105 engines
- 1.2 l, 59 hp, carburetor, rear wheel drive
- 1.3 l, 64 hp, carburetor
- 1.3 l, 69 hp, carburetor
- 1.5 l, 71 hp, injector
- 1.5 l, 71 hp, carburetor
- 1.6 l, 82 hp, injector
| Engine make | VAZ 2101 |
| Engine capacity, cubic meters cm | 1198 |
| Number of valves | 8 |
| Maximum power, hp | 59 |
| Transmission type / Number of gears | manual transmission / 4-speed |
| Speed at maximum power, rpm | 5600 |
| Maximum torque, N*m | 85 |
| Speed at maximum torque, rpm | 3400 |
| engine's type | in-line, 4-cylinder |
| Supply system | carburetor |
| Recommended fuel | gasoline AI-92 |
| Fuel consumption | |
| Fuel consumption in the combined cycle, l/100 km | 8,2 |
| Dynamic indicators | |
| Acceleration time 0-100 km/h, s | 22 |
| Maximum speed, km/h | 140 |
Peculiarities
At the end of the seventies, the Volga automaker actively expanded its offer, releasing new modifications of its cars. A modified engine from the VAZ 21011 was installed on the new VAZ 2105. The main difference between the new engine and the VAZ 21011 is the presence of a belt drive, which made it possible to reduce the noise levels of the engines.
At the same time, the VAZ 2105 engine has a special design, which in cases of a broken timing belt prevents damage to the valves. All this made it possible to significantly increase the reliability of the motor, which was undemanding and easy to maintain.
With its small displacement of 1.3 liters, even the original carburetor version produced 64 horsepower. Subsequently, when the VAZ 2105 engine received an injector, the power figures amounted to more than 70 horsepower. We only note that the injection modification was distinguished by increased requirements for fuel quality and could run exclusively on gasoline with an octane rating of 93.
Like most other VAZ engines, the engine from the VAZ 2105 turned out to be quite reliable and durable. The cylinder block was made of cast iron, and the alloy used was highly resistant to overheating; engine failure due to overheating was rare. This engine was not difficult to repair, which allowed the car owner to carry out all the service and fairly simple repair work independently.
The VAZ 2105 engine, taking into account its small volume, had excellent power indicators and provided the VAZ 2105 with good dynamics. The car accelerated quickly and had a maximum speed of about 140 kilometers per hour. Increased fuel consumption caused certain complaints from owners of cars with this engine.
For example, in urban conditions this engine consumed about 11 liters of fuel. On the highway, fuel consumption was 8 liters per 100 kilometers. Another disadvantage is increased oil consumption, so car owners needed to add oil every 2-3 thousand kilometers and change it frequently. Consumption per thousand kilometers was about 700 grams of oil. Moreover, this was not considered a breakdown, and it was not possible to somehow fix such an oil problem.
VAZ 21054 injector
Carburetors from different manufacturers are no different in operation; they are all made in order to create a fuel-air mixture. For this, there are already known proportions. The next step is to enter a chamber where this mixture ignites and burns completely.
There are different carburetors and injectors: float - it is the most popular and famous compared to the others; needle-shaped - it is less common; and a very rare one - a bubbler carburetor, this carburetor is not known to everyone; it is used very rarely. Carburetor tuning for VAZ 21054, VAZ 21053 is a popular and therefore popular product on the domestic market.
Malfunctions
| FAULTS | CAUSES |
| A dull knock and loss of engine power. | A similar problem is typical for a broken timing belt. At the same time, the special design of the motor protected the valves from damage when the timing belt broke. In this case, the driver needed to replace the rollers and the belt itself. Often such repairs were enough to eliminate the problem. |
| Valve knocking when revs increase. | Service work on this engine required frequent valve clearance adjustments. If knocking occurs, you need to visit a service center or adjust the valve clearance yourself. |
| VAZ 2105 engine wedge with damage to valves and pistons. | Such breakdowns were usually caused by a lack of quality car maintenance, in which the car owner ignored the requirements for changing the oil. Repair in this case is high cost, since it is necessary to replace damaged valves, cylinder heads, pistons and crankshaft. |
| The motor overheats quickly. | There may be several reasons for this problem. This is a failure of the mechanical pump, insufficient coolant level, or the cooling radiator is dirty. |
Engine malfunctions and repairs 2105
The VAZ 2105 engine is the same 21011, the power is slightly lower than that of the eleventh, the main difference is that the VAZ 2105 engine has a belt. The use of a timing belt is designed to reduce engine noise. One of the positive qualities is that the 2105 engine does not bend the valves. Cons of the 2105 engine... the 2105 engine still requires valve adjustment. In addition, the 2105 engine stalls, this may be caused by the thickened oil in the box not being warmed up. Just warm up the car in the cold season and only then start driving. Problems. It is not uncommon for a VAZ 2105 engine to seize up; this is most likely caused by a lack of oil or a reluctance to change it on time; such savings can easily backfire. Just as the 21011 VAZ 2105 engine smokes, the main causes and solutions to this problem are described in the article about 2101 HERE in the “General Description” section. A knock in the VAZ 2105 engine indicates that the valves are not adjusted, go to a mechanic or adjust them yourself differently with an increase in the thermal gap, in addition to additional noise, you will experience a decrease in the already not high power, valve burnout, camshaft imbalance, increased consumption fuel, etc. In general, the VAZ 2105 engine malfunctions are completely identical to the 2101 and 21011; read articles about these engines to fully understand the picture.
Tuning
It should be said that increasing the power of the VAZ 2105 engine invariably led to a decrease in its service life. For example, after increasing power to 90 horsepower, the average engine life was only 80,000 kilometers before major repairs. That is why the car owner had to decide whether he wanted to increase power, while invariably sacrificing reliability indicators.
- An effective way to tune a 2105 engine is to bore the cylinders to a piston with a diameter of 82 millimeters. Note that such work is a certain complexity, so tuning the VAZ 2105 engine should only be performed by an experienced specialist. At the same time as the cylinders are bored, sports camshafts, a new oil pump and compressor can be installed. In the latter case, the power of the power unit reaches 100 horsepower.
- In extreme versions of VAZ 2105 engine tuning, the engine is replaced with a VAZ 413 rotary engine. The power of this power unit is 140 horsepower. This tuning allows you to increase the maximum speed of the car to 180 kilometers per hour, and acceleration to hundreds takes about 9-10 seconds.
Injection instructions 2105
Under the hood
If we compare the three mechanisms, the last one ranks last both in terms of popularity and power. VAZ 21054 is no exception. First, let's look at the main complex of this mechanism: an autonomous idle system, a float chamber, a valve to close the idle speed, an econostat, a system used for dosing, a throttle valve, a compartment for removing gases from the crankcases and a transition system for both gases. This seemingly very small amount of information is already enough for you to start cleaning and adjusting the VAZ 2105 yourself.
It is after cleaning the carburetor that adjustment occurs. But you need to remember that you shouldn’t look for breakdowns where there are none. In order to correctly and well adjust the VAZ 21054 carburetor, you need to very carefully consider and remember all the contents of the mechanism. It is important to clean all parts from dust and foreign bodies. It is also necessary to wash the float chamber and clean the strainer. Having completed all of the above, proceed to cleaning the air jets and adjusting the system for the floats, trigger and idle speed.
The strainer is an important part of the carburetor and needs to be checked from time to time. As a rule, the check is carried out every 60,000 revolutions. To check the strainer, you need to use manual fuel supply and fill the float chamber with fuel. After closing the valve, you need to slide the top part of the filter and remove it.
Description VAZ 2105
In terms of its design, the VAZ 2105 is a rear-wheel drive sedan with four doors for five passengers. Based on this model, the VAZ 2107 and the VAZ 2104 station wagon were later produced. With its appearance, the VAZ 2105 was fully consistent with the fashion trends of the early 80s. Thus, its body had straight lines with aluminum bumpers, the headlights were voluminous and rectangular, although for Russian residents there is no point in describing this model due to its wide popularity and demand even in our time.
Features and Service
Technical characteristics of the VAZ 2105: length 4130 mm, width 1620 mm, height 1446 mm, ground clearance 17 cm. The trunk volume is small, up to 385 liters. The curb weight of the car is 995 kg. Fuel consumption in the urban cycle is 10 liters per 100 km.
In terms of maintenance, the VAZ 2105 is one of the most inexpensive models due to the low cost of spare parts. This makes it possible to carry out a wide variety of do-it-yourself tuning and traditional repairs. Until now, a large number of Lada 2105 models are in demand and travel along the roads of our country. And all this is possible thanks to the low cost of this car, as well as the low costs of repairing and operating the car. And this is despite many design flaws and periodic repairs, and also despite the fact that this model, in its maneuverability on slippery and icy roads, does not meet modern global safety standards. After all, maintenance and operation are one of the most important indicators of a car’s attractiveness. Over the years of production, the five received many modifications, including 21051, 21053, 21054, 21055, and the small-scale 21059 with a rotary piston engine.
