Do-it-yourself construction, repair and adjustment of the OKA carburetor + video

When designing the VAZ Oka 1111 and 11113, the designers tried to simplify and reduce the cost of the design as much as possible. For this purpose, the simplest and most proven solutions were used, the unification of spare parts with other VAZ models, and this concept of building a small car concerns all its components, including the suspension.

The VAZ Oka has a transverse engine and transmission design and is driven by the front wheels. And with this type of drive, the simplest and cheapest suspension option is shock-absorbing struts, also known as MacPherson struts. It is this type of independent suspension that the small car received at the front.

At the rear, they installed a so-called semi-independent beam with a separate design of the main components.

Engine VAZ 1111

Oka engine 650 cc. turned out from half of the 2108 power unit. The choice of exactly half of the already developed block and the engine itself was determined by the cost of developing equipment for the manufacture of a 2-cylinder engine. A design feature of this in-line petrol twin is the overhead camshaft, which controls the operation of four valves - 2 for each cylinder.

The working process in the engine occurs in two revolutions of the crankshaft, which causes vibrations during operation of the internal combustion engine. To compensate for the imbalance, two balancing shafts are installed to dampen vibration. Engine power is 29 hp. The maximum torque is 44.1 Nm, which is achieved at 3400 rpm.

The fuel supply system is made according to the Euro-0 standard based on a carburetor. The fuel pump is mechanically driven by engine components.

The oil system is similar to the original 2108 using a gear pump. Oil is taken from the crankcase and sent through internal channels directly to the rubbing pairs of the camshaft and crankshaft.

The cylinder walls are lubricated by oil mist generated when the crankshaft rotates. The valve stems and parts of the valve timing mechanism, with the exception of the camshaft itself, are lubricated by gravity.

A snow and swamp-going vehicle that can even swim

Even more solid results were achieved by a car mechanic from Rubtsovsk, who used not only the body, but also the Oka engine when creating his unique creation.

To ensure record cross-country ability, allowing the all-terrain vehicle to overcome any off-road conditions, snow drifts and rivers, the designer tried to make this model as light as possible, actually removing rear axles from its design.

In addition, the master made the wheels himself, using the tubes from an old trailer as a basis. In any case, the machine turned out to be quite solid in appearance, having served its owner faithfully for three years in a row.

Moreover, she has attracted the interest of other residents of the Far North, who call the talented master, offering to buy his masterpiece for a considerable sum.

Engine VAZ 11113

The Oka 11113 (VAZ 11113) engine appeared in the process of refining the VAZ 2108 power unit and bringing its working volume to 1500 hp. Again, a half solution was used. The engine blocks of both 650 and 750 cc volumes were absolutely identical in appearance. The changes affected the piston diameter, which was increased from 76 to 81 mm. The engine block has been modified in internal design.

The partitions between the cylinders were thinned and the additional combustion chamber cooling circuit was eliminated. The power unit has become more highly loaded in the temperature department. This shortcoming in the early stages led to jamming of the pistons, the formation of scuffing on the cylinder walls and other malfunctions arising due to insufficient cooling.

Due to the modifications, the 11113 engine became more powerful and already produced 35 hp. and 52 Nm of thrust. The engine remained carburetor and complied with Euro-0 environmental requirements.

Basic faults

The main malfunctions of the first 650 cc engines and engine 11113 include increased noise and vibration. Increased noise appears when the engine warms up and is caused by the presence of balancer shafts. The noise is considered normal, although it causes concern for car owners.

Increased valve clearances can cause additional noise. Eliminated by adjustment. Vibration has a constructive reason and is caused by the operation of only 2 pistons, which have a working stroke of only 2 rotations of the CV, that is, during operation, 1 piston rotates the CV by 360 o.

Burnt out cylinder head gasket. It is caused by inaccurate manufacturing of gaskets in factories and improper tightening of the cylinder head, which allows the gasket to be incompletely compressed. During repairs, reuse of this sealing element is not allowed. Mandatory replacement is required, in this case you should pay attention to the surface of the gasket and if scuffing is detected, you should not use it.

Difficulties in starting a hot 750 cm 3 engine are due to the fuel pump diaphragm and the layout of the engine compartment. Elevated operating temperatures of the engine block lead to the formation of fuel vapors in the cavities of the pump, and the unit is not intended for pumping a gaseous medium.

If a malfunction occurs on the highway, just place a dampened rag on the pump body. This will be enough to get to the base location and replace the diaphragm.

Loss of spark. The spark generation system in the cylinders is made according to a non-contact circuit using an ignition coil. The location of the coil allows water to enter when passing through puddles. This causes failure of the voltage boosting element and results in the inability to start the engine.

Cooling system. It has the same problems as all VAZ engines. Poor quality of the pump leads to its failure, which in due course leads to overheating of the engine. The same applies to the reliability of the thermostat. If problems arise, elements need to be replaced.

Failures of electronic sensors. They are caused by poor-quality electronics by Russian manufacturers, as well as poor assembly standards of power units, which allow for incomplete fixation of sensors on the motor housing.

Repair of the OKA engine can be performed in a garage if you have experience in servicing and repairing Russian-made internal combustion engines. With the exception of specific elements, engine repairs are carried out using components used for repairing VAZ 21083 and VAZ 21093 engines.

Sequencing

Let's move on directly to the process of replacing piston rings on a VAZ Oka without removing the engine (key points are shown in the photo). Everything is done like this:

The car is placed on a viewing hole and immobilized;
Working fluids (coolant, oil) are drained;
The first stage of work takes place entirely in the engine compartment. For ease of work, you can completely remove the hood from the car;
We remove the air filter housing from the carburetor, disconnect the drive cables, the XX solenoid valve wire and the gasoline pipelines;

5. Remove the protective cover of the timing drive, loosen the drive roller, and remove the belt from the camshaft gear. We unscrew the bolt of this wheel and remove it from the shaft (carefully so as not to lose the key);

6. Disconnect the pipes from the valve cover, unscrew the bolts securing it and remove it from the car;

7. Disconnect the vacuum regulator pipe;

8. Unscrew the bolts securing the spark torque sensor and move it to the side;

9. Unscrew the fuel pump and put it aside;

10. Unscrew the fastening of the spark torque sensor drive housing and remove it;

11. Unscrew the upper bolt securing the rear timing belt cover and move it to the side;

12. Unscrew the nuts securing the camshaft bearing housing and remove it;

13. Carefully dismantle the camshaft along with the oil seal. When assembling, it is better to replace the Oka camshaft oil seal. If you are only replacing the camshaft on the Oka, further disassembly is not necessary;

14. Remove the generator mounting bracket;

15. Remove the tension roller;

16. Disconnect the cooling system pipelines leading to the cooling jacket;

Maintenance of Oka engines

The Oka engine of both the first and second generations is quite reliable. And if the factory requirements for maintenance regulations are met, it has a service life of 120,000 km.

According to the vehicle passport, both engine 11113 and engine 1111 have a maintenance program every 15,000 km. To undergo maintenance at this interval, it is recommended to use fully synthetic motor oil. When using semi-synthetics, and even more so mineral motor oils, the Oka engine requires changing the lubricant in accordance with the service life of the oil, that is, at least 10,000 km.

In this case, the oil system must be flushed and the filter element replaced. The oil volume in the Oka engine is 2.5 liters, but when replaced, 150-300 ml of lubricant remains on the engine walls, so the filling volume is controlled by the dipstick. Overfilling of oil is not allowed.

In conclusion

It is difficult to imagine that Oka can act as an all-terrain vehicle. Nevertheless, ingenuity and resourcefulness make it possible to create a real off-road conqueror out of this “baby”. Full-fledged Russian-made SUVs, not to mention foreign-made grandees, are very expensive. Converting a “compact car” into an all-terrain vehicle also requires considerable expenses. However, many consumers are confident that “the game is worth the candle.” First, the transformation can be carried out in stages. Secondly, you can easily find spare parts, as well as use improvised means and parts from non-working cars.

Among the most popular homemade versions of the all-terrain Oka, Fr. They are based on low-pressure pneumatic wheels. The originality of the tracked models is that they are perfect for snowy and sandy areas.

Tuning and modification of Oka engines

Tuning the Oka engine does not make practical sense under normal operating conditions. Increasing power and torque when flashing ECM units can give an increase of up to 10% horsepower, which is about 30 hp. will not be particularly practical.

As a garage modification, Oka engine tuning is performed by installing an injector from a VAZ 21083i, but the cost of modification can be comparable to installing a Chinese liter TJ376QE FAW engine (Daihatsu), which was mounted on a Serpukhov-made SeAZ Oka 11116-02 car in 2007-08.

Assembly Features

Important points during assembly:

During the assembly process, it is imperative to replace the gaskets of the cylinder head, sump, exhaust pipes, and valve cover;
Tighten the block head bolts in a strictly defined sequence;
After assembly, perform the adjustment correctly - align the marks of the crankshaft and camshaft to ensure proper operation of the timing belt, tighten the drive belts, check the thermal clearances;

And although there are quite a lot of operations that need to be performed to remove the motor or replace the rings, they are not complicated and all the work can be completed in a day.

Other small-scale Oka power units

Only VAZ 1111 and VAZ 11113 engines were serially installed on the car. It was with these power units that the car was supplied to retail chains.

As options to save production and meet environmental requirements, both SeAZ and KAMAZ tried to use power units from other manufacturers. This was due to the fact that AvtoVAZ refused to continue producing minicars and actually stopped supplying power units to complete the car.

So in 2004, a trial series of cars with a Korean Hyundai Atos engine was produced. 15 cars were produced for trial testing, but the program did not go into series.

Also this year, small-scale tests were carried out at SeAZ of cars with engines from the Melitopol plant MeMZ 245. The car was called OKA-Astro and was subsequently produced in small series at the Kamov automobile assembly plant. Another version of the Ukrainian power unit was MeMZ 247.1. This engine, which complied with Euro-2 requirements, was not supplied for mass production, although such equipment is rarely found on the secondary market.

In 2007-2008, a Chinese three-cylinder injection engine was installed at the Serpukhov plant, which developed 53 hp.

The sports version of the Oka uses the engine from Priora.

The Oka-based tracked all-terrain vehicle uses a VAZ 2131 engine.

As an option for garage tuning, there are several examples of cars using three-cylinder Volkswagen diesel engines.

When installing shafts and heads there was always a feeling - they are capable of more, something is missing. Yes, there are results, and they have been achieved - engine 11113 produced 39-40 horses. For some it was enough, for others it was not. When I switched from the RS58 shaft to the RS628 , the highs improved, but overall it seemed to me that the shaft was defective or something. In particular, the torque at medium speeds has deteriorated, a noticeable pickup has appeared after 4500 rpm, and there is a torque hump at the bottom. But something was wrong, and the RS584 shaft sometimes gave more power in measurements than my motor. I was already starting to think that the shaft was bad, or I was doing something wrong.

I didn’t think about modifying the carb - the combination of jets was selected, the engine seems to be running... They stopped reports from losers who sawed carbs, then they were removed because of their unsatisfactory performance. From their reports it followed that they did not see any results, and what could they see without having any diagnostic instruments on hand except their ass accelerometer? And so, recently something happened - we need to make a carb. The trial carb was disassembled and lay on the table for 2-3 months, having already stopped emitting any odors out of despair. But, having assembled a cylinder head with M11 shaft for Nikolai, I made a 21x27 . A head with a sports shaft and carb was installed and showed excellent results, but I will write about them later. I came home inspired - and the next day I made two 21x28 .

But first, a few words about the car. OKA, engine 11113, modified cylinder head and RS628 shaft. In January, the Motor Tester showed 39 hp. , which upset me somewhat at first - in comparison with the serial graph, a clear “provision” was visible in the average speed. It was inconvenient while driving - the maximum speed and acceleration time were lost. The results were as follows - 39 hp. at 5500 rpm , torque 5.5 kg at 2800 rpm , at 6000 rpm an increase of 1.1 kg and 9 hp. On the graph below the blue line is cr. torque of a serial internal combustion engine, red - power of a serial internal combustion engine, dotted line - respectively torque and power of my engine (click on the screenshots to enlarge):

In the spring of 2008, after a run of about 50 tkm after boring, I replaced the pistons and rings (without boring), I installed SM , which increased the engine efficiency by reducing friction in the “cylinder-ms ring” pair. Removing the VSKh again inspired me - the engine produced 43 hp. , noticeably raising the torque line after 5000 rpm . However, up to 5000 rpm everything remained unchanged. The measurement result is 43 hp. power at 5700 rpm , torque 5.5 kg at 5400 rpm (the second, top, “hump” became higher than the first). The increase at 6000 rpm was already 1.7 kg and 14.5 hp. Let's look at the graph (dotted line - VSKH before and after replacing the pistons):

And so, I installed a bored-out carburetor. It was a shock in every sense. After test rides, my hands were shaking. The carburetor required a different combination of jets, which is quite understandable - the diffusers increased, the flow rate decreased. The engine shook - the Motor Tester produced 46 hp. at 6000 rpm , the torque is already 6 kg at 5300 rpm , the increase at 6000 rpm was 2.2 kg (.) and 18.5 hp. (. ) . Need I mention that the production engine at 6000 rpm produces a measly 3.3 kg of torque and 28 horses! And here at 6000 rpm – 5.5 kilograms and 46 horses! But the main thing is to look at the graph. It all rose up, the gap between the humps leveled out and almost became level, forming a long shelf of torque - from the bottom to the top! The blue and red lines are the torque and power of the serial 11113 internal combustion engine, the purple lines are the torque and power after replacing the pistons and rings, the red dotted lines are after installing and tuning the 21x28 carburetor.

And once again let's look at the final graph 46 horsepower engine. Pay attention to the scale at the top of the screen, showing the amount of power and torque at certain speeds - it’s easy to see that the motor shows a flat torque level within 5-6 kg of torque in almost the entire range. From the bottom to the top. Look at 7000 rpm - there are 4.1 kilograms of torque and 41 hp. !!

"Lenekhod"

Just by the name of this transport, it becomes clear that its author and designer was a master named Leonid. Indeed, a resident of the city of Nyagan, who built such a miracle of technology, capable of accelerating up to 50 km/h and overcoming any water barriers, bears this very name.

If we talk about the technical characteristics of the snowmobile, then it was built on the body of the same Oka, placed on an all-welded profile frame, receiving a motor from a VAZ-1111 as a power plant.

The result is a real hodgepodge of meat, and even on studded SHAIN tires, but the car copes with its duties with a bang, helping the owner transport firewood and other cargo.

Content

Today, compact cars are quite popular. They are ideal for urban environments, as they are compact and economical. The class under consideration includes the VAZ 1111, which is also called “Oka”. The car began production in 1987, production was closed in 2008. The model is a prominent representative of the budget class, which determines the accessibility of the car. The fact that its production was established more than ten years ago is determined by outdated technical equipment. That is why many people decided to do the tuning of the VAZ 1111 with their own hands.

Small KAMAZ

Although the development of the small car was carried out in Serpukhov, it was supposed to be launched into mass production in Elabuga, and since the city is located on the Kama River, the model was given the name “Kama” VAZ 1111. But due to the unstable economy then in the Soviet Union, there were no plans not destined to come true - the production of the brand in the planned volume (900 thousand cars per year) did not work out, and the Elabuga plant was repurposed. VAZ-1111 began to be produced in smaller volumes, and at other enterprises:

at the Volzhsky Automobile Plant in Tolyatti;
in Serpukhov (SeAZ);
in Naberezhnye Chelny (ZMA).

What can the Oka be converted into?

The car in question can be upgraded in a variety of ways. The most common modernization methods are:

Creation of an SUV. Even though the car has a low ground clearance, it can be converted into an SUV.
Roadster. This name refers to a two-seater car with increased comfort.
Cabriolet. If desired, you can use Oka to create convertibles: two doors, quite a spacious interior for two seats. However, it is worth remembering that there will be no room for a roof.
Rally car.

The easiest way is to make an SUV, since it is enough to change the suspension and some body elements, and install large-diameter wheels. But other modernizations, for example the creation of a convertible, require serious interventions.

Thoughtful solution

Since in rural areas you often have to navigate difficult terrain, many people want to buy an SUV. Alas, such cars are quite expensive, so you need to know how to make an all-terrain vehicle from the Oka. To create it, they use improvised means, which include spare parts from broken cars and motorcycles.

Among the most popular options for “folk” crafts are “station wagons” based on low-pressure pneumatics or air-cushioned ones. The use of crawler tracks is also common, but they are more suitable for snowy areas. Creating an SUV based on the Oka is a cost-effective solution, since it does not require the purchase of expensive components.

All-terrain vehicle on low-pressure tires

This design is based on an invention that uses a body that is located on a breakable frame. This solution significantly strengthens the design of the product. All wheels are installed with your own hands as drive wheels, so they can even overcome swampy terrain.

Based on Oka engines, the production of so-called karakat engines is also very popular. They stand out for their increased cross-country ability thanks to wide-format tires. This complements the advantages of pneumatics, because it does not destroy the grass cover.

Using Tracks

These “station wagon” options are most popular among fishermen and hunters. Homemade tracked all-terrain vehicles from Oka have increased maneuverability in water bodies and wooded areas. Their body is usually made of a box structure, which reaches a length of 3 meters. It is light in weight, so in places where deep traces of a person remain, vehicles penetrate into the quagmire only 10 cm.

Engine tuning to increase power

When considering how to improve this car, you should pay attention to the installed engine. It has a relatively low power rating and low reliability.

There are two methods for improving the motor:

1. Installing a new one, for example, taken from a Rover Mini. This power unit has a volume of 1.3 liters, as well as higher reliability. This modernization method is considered preferable, as it can significantly improve the performance of the car. However, the method has one significant drawback - the high cost of implementation.

2. The second option involves improving the standard design. This method is cheaper and easier to implement, and allows you to achieve a high power level. Engine tuning begins with changing the carburetor: increasing the diameter of the throttle valve allows for the supply of a large amount of air, as well as increasing the service life of the structure. A new camshaft can be installed, which will also increase the number of revolutions. Replacing standard valves increases engine power and changes the combustion chamber. Modernization of intake and exhaust manifolds, installation of a new air filter - all these changes also increase engine power.

In general, we can say that there are quite a few methods for modernizing a motor. The engine that comes from the factory does not have high driving performance.

How to earn points and participate in auctions

You can activate certain functions by exchanging points for items in auctions. But first you need to earn them. To do this, go to the website ok.ru, enter your username and password, and in the menu on the left, find the “OK Moderator” section.

Then click on the “Select game” button.

At the moment there are 3 options for tasks:

check photographs and videos for the presence of pornography, obscene language and scenes of violence;
recognize images on stickers;
note whether there is a phone number in the pictures.

You perform verification and help the administration of the social network monitor various content. Your marks are compared with the opinions of the majority of participants, points are awarded for correct decisions, and points are deducted for mistakes. Select the appropriate option for tasks, read the rules and start completing them.

If you choose the first type of check, keep children away from the screen; some images actually contain pornography.

After you earn at least 200 – 300 points, go to the “Auctions” section.

In the window that opens, we see what features can be purchased for points, the bid for each lot and the auction deadline. It is better to bet on positions that will close soon, then there is a greater chance of becoming a winner.

You can view current lots at any time, the points are saved and will not go anywhere until you spend them. It’s convenient to access “Auctions” through the list of sections on the main page. First, tap “More” and then find the item you want.

Common methods of body tuning

The exterior design of the car in question does not look modern and is very simple. That is why many are considering the possibility of upgrading the body. Just a few years ago, body tuning involved creating a body kit yourself - painstaking work that required certain skills and technical equipment. However, today you can carry out tuning by purchasing a special kit. This tuning method can be characterized as follows:

All elements are easy to use and do not require major modifications. When creating the kits in question, they are ideally adjusted for installation on a car.
The entire body kit is made in the same style, which allows you to complete the style of the car.
Installation work does not take much time. The fact that there is no need to change the design determines a significant acceleration of work. It is represented only by dismantling old elements and installing new ones. You need to be prepared for the fact that some fasteners will be covered with corrosion and dismantling will be difficult, and after removing the body kit, body defects will be discovered that require restoration.
The cost of the sets sold is relatively low. Of course, homemade options will be much cheaper, but only if they are done on the first try.

In this way, you can significantly modify the car in question. However, this method only changes the Oka in appearance; significant modernization requires more serious intervention.

Interior modification - how to do tuning?

When considering the most popular tuning methods, do not forget about the possibility of changing the interior. Let's highlight the following most popular tuning methods:

Interior insulation. In order to feel comfortable while driving in noisy cities, you should take care of proper insulation.
Installing more comfortable seats. The seats installed in the car at the factory, to put it mildly, do not provide adequate comfort.
Modernization of control units and instrument panel. An example is the work of changing the instrument panel in order to increase the readability of information.
Improving the quality of finishing. You can also install panels from high-quality materials.

Important! You can finish the interior at the lowest cost due to the fact that there are quite a large number of ready-made kits on sale.

Providing car tuning services

You can modernize the Oka yourself or entrust this work to professionals. When considering the services provided by professionals, we note the following points:

Such companies appeared relatively recently and provide professional services for car modernization.
The cost of services is quite high, but this is how they can change a car almost beyond recognition.

As a rule, the services of such companies are used by those who have enough money to replenish their garage with a tuning car. This is due to the fact that even with proper and high-quality tuning, many of the Oka’s shortcomings will remain.

Experts' comments

Yuri. In order to carry out tuning of expensive cars, you must have the necessary skills. To obtain them, I decided to use Oka as a training ground. This is due to the fact that the design of this model is simple, and the compact car itself has a relatively low cost. It is possible to modernize almost all components; the only question is how much time and money can be spent on this.

Michael. I got the Oka for practically nothing. There is another car in the garage, but I still decided to leave it, since I still won’t be able to get a lot of money by selling it. In order for it to be able to be used somehow, it was modified for an SUV. Now there is something to drive in the forest and on the field.

Victor. Considering the VAZ 2121 and its modernization, I note that the car has a simple design. The installed motor requires significant changes, like other power units.

Preparatory stage

Most car enthusiasts began to understand the science of driving with the Oka car. But over time, all motorists replace old wheels with new ones, and it turns out that a working, although relatively “old” car is just collecting dust in the garage.

But if you are wondering how to make an ATV from oka, then you have already decided to give your old faithful car a chance at a new life. The assembly process itself will take a certain amount of time, and some parts will need to be purchased, but in the end you can still save a lot on the purchase of a new ATV. In addition, while turning the Oka into an ATV, you will acquire a lot of useful skills and knowledge.