How to replace the engine with a more powerful one: what you need to know

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 engine can be installed on this car?

Initially, 2 types of engines were installed on the VAZ 2107 model, these are:

• VAZ 2103, with a working volume of 1.5 liters
• VAZ 2106, with a working volume of 1.6 liters

Let's look at them next.

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.

Engine VAZ 2103

Specifications

The main characteristics of the engine are presented in the table below:

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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):

Reworking the 2114 engine - reasons and difficulties

Generally speaking, replacing the motor is an undesirable procedure. The reason lies in the fact that the engine installed at the factory is the most optimal for this particular car - everything has already been thought out by the designers and engineers. True, the results obtained do not always satisfy motorists.

So, it’s worth comparing at least the total resource of domestic and foreign engines. For the first (specifically for the VAZ 2114) it is 250,000 kilometers, and for the second (similar in all other parameters) - 500,000 kilometers. Even this fact alone makes drivers think about installing an engine from a foreign car in a VAZ 2114.

Engine from a foreign car for VAZ 2114

It should be remembered that the problem of installing and altering the engine is not the only one that will have to be faced. Most drivers are not stopped by it, but by the enormous difficulties of further registering such a modified car with the traffic police.

Speaking about the choice of engine, we can answer very briefly - you can install absolutely any engine that fits in the engine compartment. True, in most cases, a bunch of other mechanisms will have to be replaced, as a result of which little will remain of the original car (except for the body and interior).

That is why you should give preference to the most compatible engines. Another, no less optimal option is to upgrade the original engine. It will be much cheaper and will not cause any problems with the police.

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.

You shouldn't buy unknown brands either. In this case, you are buying a pig in a poke. You can buy oil that is of a quality that is not inferior to expensive analogues, or you can end up with expensive repairs. It is best to buy oil in specialized stores, where you can get at least some explanation and compensation.

Another important parameter is the oil class according to the international nomenclature. True, everything is simpler here. You just need to take the oil that the manufacturer himself recommends.

The manufacturer (AvtoVAZ) for VAZ 2107 engines and other models with this type of engine recommends:

• 5W-30;
• 5W-40;
• 10W-40;
• 15W-40.

You need to take about 4 liters of oil. When changing 3.5 liters of oil is usually enough. It’s better to carry the rest with you in the trunk, since oil consumption in this engine leaves much to be desired.

• Changing the oil in the VAZ 2107 engine

The procedure itself is quite simple and should not raise any questions. It is better to change the oil on a VAZ 2107 in the warm season.

1. First you need to start the car and warm it up to operating temperature. Then turn it off and let the oil fall back into the crankcase. This will take about half an hour. During this time, we prepare a receiving container with a volume of 4-5 liters, as well as new oil, a watering can and a hose.
2. Use a special wrench to unscrew the plug on the crankcase and wait for the old oil to drain out.
3. If you change the type of oil or brand, you must also take flushing oil, which will clean the engine of the remnants of the old one. We pour it in the same way.
4. Then we tighten the crankcase cover and fill in new oil through the neck on the cylinder head. We measure the level with a dipstick. It should be somewhere between the MIN and MAX marks. Please note that oil is not water and it cannot quickly sink into the crankcase, and therefore after a short stop the oil level in the crankcase will rise a little more.

Usually, along with changing the oil, the oil filter is also changed. It's even simpler here:

1. We unscrew the old one using a special tool (you can also use an ordinary rope), lubricate the o-ring of the new filter with oil and screw it in place of the old one.

• Adjustment of valves

Adjusting valves is a rather complicated process and requires certain skills and tools. Actually, it is advisable to entrust the valve adjustment itself to competent specialists, but if you want to do everything yourself, then this video is for you:

Major repairs and maintenance

If valve adjustment can be done at home, then major engine repairs should only be entrusted to specialists.

During a major overhaul, all components and assemblies of the VAZ 2107 engine are checked for serviceability. They will check for you:

1. Valve condition, adjustment;
2. Chain, chain tension;
3. Condition of oil seals, valve stem seals;
4. Geometry of the cylinder block;
5. Condition of the pistons, crankshaft, pins, connecting rods;
6. Wear of compression rings;
7. Condition of the oil pump and coolant pump.

If damaged, the part will be replaced. The cylinder block will be bored out, which will increase the combustion chamber and working volume. After this procedure, the car will be run-in for several thousand kilometers.

Typically, running-in lasts 5-10 thousand km. At this time, it is not advisable to give the engine heavy loads. After completing this procedure, your engine will make you happy.

Malfunctions

1. Engine won't start

2. Knocking noise from the crankshaft main bearings

Usually the knock is dull, metallic. It is detected when the throttle valves are opened sharply at idle. Its frequency increases with increasing crankshaft speed. Excessive axial clearance of the crankshaft causes a sharper knock with uneven intervals, especially noticeable with a gradual increase and decrease in the crankshaft speed.

Engine tuning

The most popular types of tuning for engines of this type are increasing the displacement, replacing the camshaft, installing a zero-resistance filter and direct-flow exhaust.

The most effective way (and the most expensive) is to install a turbo kit.

• Increase in working volume

The design of the VAZ 2103 engine allows for a good increase in displacement, since its cylinder block is almost identical to the VAZ 2106 engine block. And when this block is bored, it can be made to fit the piston and rings of the VAZ 2106 engine.

Thus, we get an increase in displacement, which increases fuel consumption and power. If even this is not enough, then they sharpen the pistons on the valve side and install a crankshaft from the Niva, which also increases the working volume. Presumably after these operations you can get an engine with a displacement of 1.7 liters, sometimes 1.8 liters.

• Installing a new camshaft

This modification does not increase engine power, but changes the nature of its operation. In most cases, they try to install a camshaft that will transfer maximum torque to as low a speed as possible. This makes the engine more responsive at lower speeds, which has a very good effect when driving at low engine speeds. The best option for such a modification is a camshaft from Niva 21213.

• Installation of direct-flow exhaust and zero-resistance filter

The most popular modification. First of all, it's pretty cheap. Secondly, it allows the car owner to show off to neighbors in the garages. In fact, it does not have any practical benefit for the stock engine. Allows you to feel a slight increase in power only at high speeds.

It is quite effective when installing Turbo, since it does not put pressure on the engine, which is now capable of developing enormous power. Direct-flow exhaust is not convenient due to increased exhaust sound. It is dangerous to use the filter in wet weather, as it can let water into the engine, causing water hammer.

• Installation of turbocharging

The most expensive and effective way to increase engine power, while its resource sharply drops by 2-3, sometimes 4-5 times.

Requires deep exhaust tuning:

1. Installing T-Valves
2. Imported rings and forged pistons
3. Lightened crank feces
4. Intercooler and much more.

It is also necessary that your VAZ 2107 engine be fuel-injected. The carburetor can simply burst due to such high pressure. This article will not describe the procedure for installing Turbo on a VAZ 2107. There is enough such information on the World Wide Web. Here we will simply indicate a price of approximately 15% of the cost of the car. If you are ready to spend your money on this, go for it.

Gasoline engine: injector or carburetor?

If you have decided on a gasoline engine , and in the question of new or used you definitely choose the second option (used car), then the most important thing you need to do when choosing a specific car is to make sure that the engine is equipped with an injector and not a carburetor. Now I will explain why this is so important.

So, gasoline engines in cars are injection and carburetor .

• A carburetor is a mechanical fuel supply device, the stability of which depends on many factors, such as weather.
• Injector - replaced the carburetor; it is its more advanced, electronic analogue. This is a system that itself determines how much fuel to supply to each cylinder at any given time and depending on the situation.

Previously, all gasoline engines were equipped with carburetors until electronics were invented. Now everything is the other way around: all cars are equipped with electronic injection ( injector ), and the antediluvian carburetors have become archaic, they are not even installed on domestic cars and it is unlikely that cars with carburetor engines are still produced anywhere in the world.

The carburetor requires constant monitoring, adjusting, cleaning, dancing around it on a frosty winter morning, etc. But the injector is an electronic mega-brain, which itself determines at what moment how much fuel to supply to the engine, depending on various factors. Naturally, the injector quickly replaced its outdated ancestor.

So, dear readers, if you want to buy a used car, but do not want to start understanding the structure of the carburetor, then it is better NOT to buy a car with a carburetor engine , take only an injection one and then you will always have a motor.

Engine VAZ 2106

The design of the VAZ 2106 engine is almost completely identical to the VAZ 2103 engine, with the exception of some nuances, such as engine displacement.

Characteristics

Dimensions and Weight are identical (see paragraph Characteristics of the VAZ 2103 engine).

Features of operation

Completely identical to the VAZ 2103 engine (see similar VAZ 2103 engine design). The oil volume in the crankcase is also the same and is 3.75 liters.

Engine tuning

Also identical to the VAZ 2103 engine. See the section Engine tuning (VAZ 2103). The features of boring will be described below.

• Increase in working volume

Identical to the point “Increasing the displacement of the VAZ 2103 engine” with the exception that this engine does not require sharpening the cylinder block. It has already been bored to the required values.

This concludes the article. We hope that you were interested and found answers to the questions: “What engine can be installed in my car?”, “How to increase engine power without losing reliability?” and “What is an injector?” As you can see, despite its modest engine performance, the VAZ 2107 has the potential for modernization and in terms of speed characteristics it can be on par with modern cars.

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Selecting the engine configuration

Engine configuration parameters include the following characteristics:

• Number of cylinders
• Cylinder arrangement (in-line, V-shaped, opposed)
• Motor location (longitudinal, transverse)

I’ll say right away that the number of cylinders can be any, it only affects the volume , and the options for the arrangement of the cylinders and the position of the engine under the hood are needed solely to fit the power plant inside the engine compartment of the car.

In the course of long experiments throughout the 20th century, automobile designers identified the most optimal configurations, and now in the production of engines, car manufacturers use only these - the most successful configurations. Each layout has its own minor pros and cons , which we will talk about now.

• Number of cylinders

This indicator is directly related to engine power , because each cylinder is an additional volume . Modern “atmospheric” engines with a power of 100 hp. Usually they are 4-cylinder, 200 hp engines. - these are 4.5 or 6 cylinders, and engines with a power of 300 hp. – usually have 8 cylinders. Increasing the number of cylinders is a measure to increase engine volume in order to increase power. The more cylinders, the more powerful the engine .

• Cylinder arrangement

There may be many options here, but in reality only the three most optimal schemes are used.

• In-line - when the cylinders are arranged in one row one after another
• V-shaped - when two rows of cylinders are located at an angle to each other. The cylinder camber angle is usually 45, 60 or 90°
• Opposed - when two rows of cylinders are located opposite each other, that is, at an angle of 180°

The simplest cylinder arrangement is in-line , when all the cylinders are located in one row, directly above the crankshaft. Such engines are simple and cheap both to manufacture and to maintain, which is why the “in-line four” is the most common design.

However, when the number of cylinders is 6 or more, the in-line engine becomes too long and then it becomes difficult for designers to squeeze such an elongated engine under the hood of even a large car. To reduce the length of the engine, schemes are used when the cylinders are arranged in two rows , at an angle to each other.

V-shaped engines are more technologically advanced than in-line engines , they are more difficult to manufacture and maintain, and therefore more expensive , keep this in mind. But boxer cars are even more complex and expensive , which is why only two automakers use them in the world: the Japanese company Subaru and the German Porsche . Opposite engines can be called exotic; not every service center will undertake the repair of these engines, and some operations that are simple for an in-line engine are quite labor-intensive when working with a boxer engine.

V-shapes are simply ideal from a layout point of view: the width is only twice that of an in-line one, and the length is almost half that . That is why almost all automobile companies use this scheme to produce powerful engines. But V-shapes also have a drawback, which is unlikely to be completely overcome - increased vibrations .

Opposite engines have a very low overall height, which allows you to place the engine literally at the bottom of the engine compartment. This arrangement of masses lowers the vehicle's center of gravity , which has a positive effect on its handling. Also, boxer engines are very well balanced, which is reflected in reduced vibration levels .