How to boost a VAZ 2109 engine carburetor

Tuning VAZ 2109

Surely every fan of fast driving dreams of owning a powerful car with good dynamics. What to do when you don’t have the funds to buy a new car with the desired technical characteristics? The best solution in this situation is to boost the engine. This type of tuning is often used for domestically produced cars, for example, for the VAZ 2109. This modernization implies unlocking the full potential of the engine: it allows you to improve engine performance by reducing the energy losses of the internal combustion engine due to friction.

Boosting methods

In most cases, achieving the required indicators is achieved by increasing the volume of the car engine. To accomplish a task of this kind, there are several options:

The first involves increasing the diameter of the cylinder block to accommodate a larger piston diameter by boring. It is called “folk” because of its low cost, because in this case all that requires expenses is the purchase of a set of pistons and wheels, as well as payment for turning services.

The first option is boring

The second is to replace the factory crankshaft with one that has a larger crank radius and therefore a larger piston stroke and larger volume. Its cost is much higher than the first method, since you will have to spend money on a crankshaft, a set of pistons suitable for the new crankshaft (since the height of the cylinder block has certain restrictions), and special rings for the pistons. In addition, it will be necessary to pay for work related to block boring.

Example for replacing a stock crankshaft

For many, it may be surprising that the increased displacement of the “nine” engine is not always the most advantageous method of boosting. In some situations (it all depends on what the engine should ultimately be like), it is much easier and more efficient to modify the cylinder head (cylinder head) and then install a suitable camshaft. This type of boost will also make it possible to increase the power performance of the power unit.

Of course, to maximize all the capabilities and reserves of the camshaft, a fairly serious modification of the cylinder head will be required, which may even include repressing the seats and installing valves with a large diameter. For example, engines characterized by the presence of eight valves will be suitable for similar parts from BMW, and sixteen-valve engines will be suitable for components from Opel and Volkswagen. At the same time, one should not lose sight of the intake/exhaust channels intended for circulating the fuel-air mixture - they also require improvement. Their improvement involves increasing the cross-sectional diameter to maximum dimensions through internal polishing.

The technical characteristics of the VAZ 2109 cylinder block, like other components, leave their mark on the overall performance of the engine. You can, of course, study in more detail the influence of the types and shapes of pistons, the weight of crankshafts and much more that is somehow reflected in the operation of the engine, but this article is not about that.

The following characteristics have a particular impact on the performance of the internal combustion engine: the ratio of the length of the connecting rod to the piston stroke and the dimensions of the crankshaft crank (diameter).

Dimensions of parts and their weight

The importance of the above parameters is due to the fact that the engine is essentially a pump that pumps a certain amount of mixture through itself over a specific period of time. It is these characteristics that will be discussed further.

The influence of the R/S value on the VAZ 2109 engine

The ratio of connecting rod length to piston stroke is designated as R/S, and its conversion is taken with the utmost seriousness and responsibility. Many sources note that the norm for R/S is 1.75.

Parameter correlation table

Indicators that differ from this value have different effects on the operation of the internal combustion engine:

R/S is above normal. Its undoubted “advantages” include the ability of the piston to remain in the top dead center (TDC) position longer. This ensures excellent combustion of the fuel mixture, namely: complete combustion of the fuel, increased pressure on the piston after TDC and increased temperature in the chamber where the fuel is burned. The result is good torque at high speeds and reduced friction in the piston-cylinder pair due to the long connecting rod, which is important for the piston stroke. At the same time, a motor assembled with an R/S number exceeding the norm, due to a decrease in air flow speed, cannot ensure proper filling of the cylinders when operating at low and medium crankshaft speeds. This is a significant “minus”, but, unfortunately, not the only one. Due to the high temperature of the combustion chamber and the prolonged presence of the piston at TDC, there is a high risk of detonation;

R/S is below normal. The advantages of this position are the excellent filling speed of the cylinders at low and medium crankshaft speeds, due to the fact that the piston moves faster from TDC, as a result of which vacuum occurs quickly. An increase in the speed of movement of the mixture consisting of fuel and air has a positive effect on its quality: it becomes more homogeneous, which makes it burn better. It is much easier to achieve such indicators, since the requirements for such modification are significantly different from engines with high R/S. A low R/S value means that the connecting rod has a large angle of inclination, and accordingly, the force on the piston will be applied in a horizontal plane. As a result, this can lead to rapid wear of the cylinder walls and rings, as well as deterioration of the lubrication process.

When configuring engines, AvtoVAZ gives preference to connecting rods with a length of 121 mm, which ensure optimal performance. In contrast, tuners using a crankshaft with a larger crank radius use longer connecting rods (129.132 mm). True, their cost is significantly higher than standard products.

Source

Engine power on the VAZ 2109 and increasing it yourself

Engine VAZ 2109

Most of the “nines”, which a certain part of motorists drive today, are equipped with a carburetor engine. In this case, many people are not satisfied with the engine power of the VAZ 2109 and some are trying to increase it. The car is taken to a service station, where various methods of increasing power are carried out. In this article we will find out what you can do with your own hands if the engine of a VAZ 2109 does not develop full power.

Ways to increase engine power on a VAZ 2109

VAZ 2109 increase engine power

There are several known ways to increase engine power today. Below are the most popular ones.

Carburetor

If the VAZ 2109 with an injection engine has no problems with power, then the same cannot be said about the carburetor version. As you know, the VAZ 2109 car is equipped with a DAAZ 2108 carburetor, assembled at the Dimitrovgrad plant. The manufacturers of these same carburetors certainly don’t grab stars from the sky, and the products that come out of their factories, frankly speaking, are different. The fact is that some carburetors can last more than 7-8 years without problems, while others cannot last even 3 years. In addition, as mentioned above, engine power depends on the carburetor.

If bad gasoline or dirt gets into a regular carburetor, or the driving style of a novice driver does not meet the standards, the carburetor (see Repairing a VAZ 2109 carburetor at home) prevents the engine from functioning normally. In this case, the power drops sharply.

Note. The reason for the ineffective operation of the carburetor can also be non-original jets. Increasing engine power by modifying the carburetor

It is worth noting that replacing a standard VAZ 2109 carburetor with an imported one will not make any significant difference in terms of increasing engine power. Only revision will help.

Note. A comparative test of the Italian Weber carburetor, which is suitable for the VAZ 2109 and DAAZ, did not give any difference. In addition, the imported carburetor “gobbled up” more fuel during operation than the domestic one.

On the other hand, some fans installed a standard Niva carburetor and the difference in power was felt. And this is not surprising, because the Nivov carburetor has more calibration data. Tuning the standard carburetor of a VAZ 2109, if done correctly, will give a noticeable increase in the dynamics of the car and significantly increase engine power.

Note. Removing this same spring will help, with a slight increase in fuel consumption, to guarantee an increase in the dynamic characteristics of the car. Simple, cheap, but cheerful.

Note. This modernization gives an increase in dynamics with a slight increase in fuel consumption.

VAZ 2109 increase engine power

Zero resistance air filter

The so-called “nulevik” is capable of helping to increase the dynamics of the VAZ 2109 car. It can be easily purchased on the auto parts market at a very affordable price and installed:

Muffler

Some advise not to bother with the carburetor and filter, but to immediately start installing a direct-flow muffler. So:

Note. Installing a direct-flow muffler, although it gives a noticeable increase, has a drawback. The fact is that when accelerating and releasing gas, the noise increases significantly, which may not be liked by others and traffic police inspectors.

Increasing the compression ratio

Note. The increase in power in this case is 12-15% more, which is very good. Do not forget that after this modernization you will no longer have to fill the tank with ordinary fuel, but with pure gasoline with an octane rating of AI95-98.

Sports camshaft

Installing a sports camshaft will ensure maximum supply of the air-fuel mixture to the cylinders, and this will increase the valve lift height. During this modernization, we do not forget to install also modified cams, which are distinguished by their exceptionally smooth profile. Such tuning cams will ensure reliable operation of the timing belt.

Note. A distinctive feature of the sports camshaft is that the detonation limit is significantly pushed back, which is clearly visible at low crankshaft speeds. Types of sports camshafts

Today there are several types of sports camshafts:

Transmission

Engine power VAZ 2109

If the methods described above gave only percentage indicators of increasing engine power, then improving the gearbox affects the dynamic characteristics, which is most important. An engine, even with the most powerful potential, may not show all its strength if it is not strictly combined with external conditions. The principle of modifying the gearbox is that you need to allow the engine to work as long as possible in the so-called “right” zone of the tachometer scale.

Methods for tuning the power unit

There are many ways to improve engine performance. Before work, keep in mind that in case of an error you will have to completely change the unit. Each method of changing motor characteristics has its own advantages and disadvantages. Here are a few relatively safe tuning methods:

1. Installing a zero resistance filter. Craftsmen often call this component “zero”. If you choose the right filter, the dynamic performance and motor power will increase by 5%. If you equip your car with a zero drive, then you will have to carefully monitor it and clean it in a timely manner. Otherwise, installing the element will be pointless and dangerous. A dirty filter poses a risk of engine damage. Focus on a price of 5 to 6 thousand rubles per filter. Instances that cost less will not work normally.
2. Together with injection power units, it is often recommended to use direct-flow mufflers. This part should only be used in the gas exhaust system if you have carried out a thorough modernization of the engine. Another option when such a muffler would be appropriate: if the car has a turbo air injection system (additional compressor). The straight-through muffler will only affect power in conjunction with other upgrades. In other cases, installing it is a pointless waste of money. It will make the car noisier and a roar will be heard when driving.
3. Another effective way to increase engine power is to install a sports range on the gearbox. At the same time, a 6th gear will be added, and the car will accelerate more dynamically due to a change in a number of gear ratios. The overall engine power will not change, but the dynamic characteristics will become noticeably better. At the same time, replace the piston group and install a more powerful engine. Deep reworking of the engine and gearbox will allow for a qualitative change in the power plant. You will feel the dynamics already when you first start the engine and accelerate. Such tuning will be expensive, but it will be worth it.
4. Chip tuning is most often recommended for injectors. Using a simple laptop, a small amount of equipment and application programs, the ECU is configured. The advantage of this method is its low cost - you do not have to carry out mechanical work or interfere with the elements of the unit. If you make a mistake, it will be enough to replace the on-board computer. It will cost less than replacing an engine if another type of tuning fails. After flashing the ECU, you will immediately notice a change in engine performance.

There are many techniques with which you can change the characteristics of a carburetor and injection model. Most work is carried out mechanically. If you have never encountered routine engine repairs until now, and you have little understanding of the principle of its structure, then entrust the modernization to professionals. They will offer you a change program and do the job efficiently.

Source

How to increase the power of a VAZ 2109 engine (carburetor) with your own hands

The vast majority of Nines are powered by carburetor engines. Many actively praise the injectors, but, nevertheless, this did not affect the total number of carburetor versions.

The VAZ 2109 car has a DAAZ 2108-1107010 carburetor. Dimitrovgrad residents do not grab stars from the sky, and the carburetors coming out of their assembly line are frankly different. One can serve five to ten years without complaints, while another, for no apparent reason, can suddenly refuse to work. True, the problem is not always a manufacturing defect.

Often such difficulties arise from dirt or bad gasoline. Or from a not very smart driver. There may be incorrect “non-original” jets, which also leads to problems.

How to increase the engine power of a VAZ 2109 carburetor?

Some VAZ owners believe that an imported carburetor can significantly affect the increase in power of the VAZ 2109 engine. But comparative tests of the domestic DAAZ and the Italian Weber showed that there is no huge gap at all. In addition, the Weber consumes more fuel and has higher CO emissions at higher speeds.

The maximum speed is also higher with “our” Solex carburetor. If up to 80 km/h there is almost no difference, then above a hundred Weber immediately begins to lose ground. And his single-cameraness is to blame.

To change the power, the VAZ 2109 carburetor is tuned.

Let's consider the options (in this case for Solex):

Improve the mixture formation process by refining diffusers, chambers and throttle valves. In general, tuning a VAZ 2109 carburetor with your own hands is a very real task.

Alex S January 5th, 2014

Published in: Useful tips and car devices

Tags: Advice for motorists

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.

Don't forget about other parts of the car

As mentioned above, the clutch suffers the most, and, naturally, it should also be changed. Some people like to use regular imported kits, while others, more advanced ones, like cermets. The last “patient” in this whole scheme is the CV joints, which, as the engine power increases, will have to be paid attention to very often, right up to replacement. The brake pads will also not be completely “happy” with the new operating conditions. Installing axle shafts will provide some help in this matter, but if you constantly squeeze full power out of your “horse,” then their usefulness will not last long. The new engine will not be happy with the old suspensions, which are already accustomed to a small work front. The difficulty in maintaining the center of gravity, especially when turning, will make itself felt in the near future.

Springs of Western counterparts will come to the rescue, and replacing gas “one-tube” ones will save the car from an unpleasant fate. True, you will have to press yourself a little to the ground, but the system will quickly respond to the slightest vibrations of the steering wheel in any direction.

Paying so much attention to speed characteristics that allow us to stay afloat, we completely forgot about the brakes. It is very difficult to overestimate the importance of these “guys”, especially when you are driving at breakneck speed, with countless horses under the hood. Fortunately, here too there are alternative options from the older brother of the “nine” VAZ 2112. The brake pads of the improved friend will satisfy the requirements of the new internal combustion engine in terms of strength and quality characteristics, but the price will make you pleasantly surprised, because it is almost identical to the old pads.

That’s probably all, after all the above actions, only the body will remain old from your old car, and even that can be modernized - if you wish!

Tuning the VAZ 2109 engine - a powerful nine!

If we are talking about high-quality and major tuning of a standard unit from the “nine”, then there are several effective modernization options. The simplest and most affordable way is engine chip tuning, which will significantly improve the dynamic performance of the engine and will not require large financial investments. However, in addition to chip tuning, there are many more ways to modify an injection and carburetor engine to obtain more output power.

Complete tuning of a VAZ 2109 engine with an injector cannot be done without completely disassembling the engine and other elements of the system.

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High-quality engine modernization involves replacing the piston group, installing a new cylinder head, installing an intercooler or turbine, etc., etc.

Thus, when modifying the cylinder head, the shape and diameter of the intake valves and combustion chamber changes. In this case, one cannot do without installing a new sports receiver and a different camshaft, which can significantly increase the power of the VAZ 2109 engine.

Tuning the VAZ 2109 carburetor means upgrading other elements of the system. The most common option is to install an additional carburetor and manifold, for example, from Oka. The main advantages of a carburetor engine are the ability to run on low-octane gasoline and greater maintainability. Some owners prefer to convert the VAZ 2109 carburetor engine to an injector. This procedure is very costly financially and is not always justified from an economic point of view. It is possible to replace the carburetor with an injector on the VAZ 2109 model with your own hands; this will require special equipment, knowledge, time and patience.

The first step to increase the power and dynamics of the motor is to install a zero-resistance filter. A properly installed good filter can add up to 5 percent of engine power, but when installing a zero filter, you must understand that it must be constantly cleaned and monitored, otherwise there is a risk of engine damage over time. A high-quality zero-resistance filter costs about 70-100 dollars - everything that is offered on the market cheaper is just a waste of time and money.

Installing a direct-flow muffler on a VAZ 2109 injector is justified only if the engine has undergone major technical modernization or an additional turbine has been installed. In other cases, a direct-flow muffler (and its installation is not cheap) will only add noise and roar to the car, but this will not affect the power in any way, as can be seen in the video presented.

Another effective way to increase the power of the VAZ 2109 is to install a sports series for the gearbox. This procedure allows the car to demonstrate improved acceleration dynamics by changing a number of gear ratios and adding an additional 6th gear. This does not affect the overall power level, but changes in dynamics will be noticeable immediately. It is recommended to do such tuning of the gearbox after replacing the engine piston group and installing more powerful parts and mechanisms.

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However, the simplest and most effective way to improve engine performance is chip tuning. If the VAZ 2109 is equipped with an injection engine, then with the help of chip tuning you can achieve excellent results as shown in the video. You can calibrate ECU parameters yourself, using modern programmers and having a computer and some equipment. With chip tuning there is no need to carry out mechanical work, everything is done using a computer and programs, and improvements become noticeable from the first day of operation of a car with a reflashed ECU.

Engine replacement

VAZ-2109 is a very specific car. The fact is that the early engines installed on the “nine” have less power and weak – by today’s standards – dynamics. Everything changed dramatically only in the 2000s, when the Volzhsky Automobile Plant began equipping “nines” with new injection units. Thanks to the use of new technology for supplying fuel to the cylinder, the power and acceleration dynamics of the car have significantly increased. Why all this talk? The thing is that you can increase engine power without painful boring and modification of the crankshaft. To do this, it is enough to buy and install an entirely injection VAZ engine instead of the previous carburetor. However, this method is effective only for those who have 1.3 and 1.5 liter carburetor engines.

If you buy a new engine, the VAZ-2109 (the price of the engine is 25-30 thousand rubles) will become not only fast and maneuverable, but also economical in terms of fuel consumption. After all, whatever one may say, the injector is a more advanced fuel distribution system.

At the same time, the old motor can always be sold for parts (or as a whole with attachments). As a result, the price of the entire tuning will be from 10 to 15 thousand rubles.

How long does it take to remove the engine? The VAZ-2109 has a relatively simple design, so you can replace the old carburetor with an injector in 1-2 days. It is important that the new motor also includes attachments. Without them, the new engine will not work. The VAZ-2109 “injector” is distinguished by low fuel consumption (about 6-7 liters) and high power. This is an ideal option for those who want to quickly and reliably increase the power of their “nine”.

Engine tuning VAZ 2109 carburetor

Recently, it has become popular to tune old Lada cars. In particular, many motorists especially like to modify the VAZ 2109 engine carburetor. This is done to increase power characteristics. Not many people know how the process itself is carried out.

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)

Tuning: basic description

Tuning a carburetor engine primarily involves boring the cylinder block. This is done in order to increase the combustion chamber, and, accordingly, the pressure inside it.

Also, lightweight parts are installed, which make it possible to reduce the weight of the motor, which will increase acceleration dynamics.

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:

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:

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

Head tuning

Tuning a cylinder head is actually assembling new parts onto old seats. So, a disassembled cylinder head is assembled from an old body and new tuning elements. There is nothing complicated in this process.

Assembly of the unit

After the main systems and components have been assembled, you can proceed directly to the process of assembling the engine together. So, in reverse order, the cylinder head, valve cover, pulleys, and timing belt are attached to the cylinder block.

After assembly, it is recommended to run the engine cold, but since not everyone has a running stand, most motorists carry out this operation hot, directly on the car.

Refinement of auxiliary systems

After the main components of the power unit have been assembled, you can begin installing auxiliary systems. So, first of all, we install the fuel injection system. An old Solex carburetor should not be installed, since it will not supply the required amount of fuel to the combustion chambers. Therefore, it is necessary to find an improved Solex Mega-2 carburetor or the Czech version - IKOV.

It is worth modifying the ignition system. Instead of standard spark plugs, it is worth installing Brisk spark plugs marked A2. Also, standard high-voltage wires are replaced with a tuning version produced by Tesla.

Do not forget about the cooling system, since an increased number of crankshaft revolutions will speed up all processes, and accordingly increased heat emissions. Therefore, a kit cooling system is installed on the VAZ 2109, which includes: silicone pipes, a sports pump and a two-chamber thermostat. It is also recommended to install a sports radiator made of aluminum. This will lighten the weight of the car by several kilograms.

The final modification is the installation of a “zero” resistance air filter. Installation of this unit is quite simple; it is “aired” onto the standard fastenings of the old case. The air intake is oriented so that there is a direct air supply.

Also, in addition to standard modifications, an air supercharger can be installed on the engine. Of course, such a modification wears out the engine elements faster, so it is recommended to install a “snail”.

After all modifications have been made, the engine is installed on the vehicle, and running-in and adjustments are carried out.

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.

Specifications

Characteristics of the 1.3 liter VAZ 2108 engine:

This motor is installed on:

• VAZ 2108;
• VAZ 21099;
• VAZ 2109.