The engine is the basis of any car - without it there is no movement and Drive! The engine on the Priora comes in 2 modifications: 21126 and 21127, the second is essentially a modified 126 engine, which has been installed on Lada Priora since 2013. after restyling the Lada Priora car model.
126 engines (16 valves) are high-torque after 1000 rpm, and up to 4000 - this is the maximum torque, after 4 thousand the torque decays. The 127 engine, due to the distributed air intake, pulls well from below, damping out at about the same rate as its brother. If the running-in was carried out properly, then the engine life will be close to 200 thousand km. Overhaul of the engine of a Priora car, like the entire AvtoVAZ range, is subject to the garage - there is nothing supernatural about it. The price of spare parts is more expensive than tenths, but cheaper than foreign ones. Engine power of 98 and 106 hp allows you to feel confident on the road - well, certainly not a vegetable. I consider the main 2 disadvantages of the engine to be the unit: pump roller, timing belt. If one of these spare parts fails, the valve bends. 2 minus - camshaft plugs: when these rubber bands dry out at low temperatures, they are squeezed out along with the oil. If you don’t see this in time, there will be trouble! The fact that hydraulic compensators knock when cold is considered the norm - you can close your eyes to this, there will be no harm.
In the vast majority of cases, Lada Priora cars are equipped with a 16-valve engine (the 8-valve engine was “inherited” from the “ten” and was not warmly received by car enthusiasts due to its sluggishness, but it has a huge advantage over the 16-valve engine - it does not bend valve).
The first 16 valve engine received number 126, the second – 127. The characteristics of the Priora engine No. 126 turned out to be so good and optimal that the car with this engine was sold most often. Repair of the Priora engine with 16 valves is not carried out so often, but you will have to look into it at least once every six months - in order to make sure with your own eyes that everything is in order with it. In addition, you need to keep an eye on the timing belt - if you miss this unit, you can get into big money. Read the article to the end, and we will tell you about these 2 units.
126 Priora engine - looks like this
Motor 126 and 127: working life, differences
These engines on Priora had a displacement of 1.6 liters (or 1596 cm3). Optimal for city sedans, the engine size of the Lada Priora gave a good combination of dynamics and consumption: along with very decent acceleration, fuel consumption does not exceed sky-high numbers. Both engines received good marks, because the car behaved perfectly in the city and on the highway.
127 motor - looks like this
In fact, the 126 Priora engine became the first sixteen-valve engine for this model, and the 127 is a modified version, “overclocked” by AvtoVAZ designers. In addition to the same engine displacement, they have other identical characteristics. The in-line type of arrangement of four cylinders provides a simplified design that can be repaired on your own.
The distributed multipoint injection system is involved in creating a good, rich fuel-air mixture (a lean mixture can lead to breakdowns). The cylinder diameter is 82 mm, the piston stroke is 75.6 mm, the compression ratio is 11. The “engines” fall under the Euro 4 standard, they are powered by gasoline with an octane rating of 95.
The 126 engine for the Priora received the following characteristics: 98 hp. (72 kW at 5600 rpm), acceleration to 100 km/h in 11.5 seconds (with manual transmission), city consumption 9.1 l - 100 km (manual transmission), maximum torque - 145 Nm.
The 127 engine for the Priora was upgraded to the following figures: 106 hp. (78 kW at 5800 rpm), acceleration to 100 km/h in 11.5 seconds (with manual transmission), city consumption 8.9 liters per 100 km (with manual transmission), maximum torque – 148 Nm.
The difference may not seem so noticeable, but this is a very small but strong step in design on the part of AvtoVAZ (this is where the change to sixteen-valve “engines” with a volume of 1.6 liters ended). For a car of the Lada Priora class, the engine power was sufficient.
In the same block it is necessary to say about the operating temperature. An absolutely normal operating temperature is considered to be between 90 and 95 degrees Celsius. Further, when the car is being pushed in a traffic jam, is basking in the sun, or for some other reason, but can still work - from 97 to 110 degrees. The engine is slow in places and wears out a lot, but you can still get to your destination. A temperature below 90 degrees is a direct sign indicating that the car has not yet warmed up, and it is better to wait in place until the arrow points to the coveted 80-90 mark.
Operating a car at temperatures above 110 degrees is dangerous because the service life of the engine is noticeably reduced - hot parts undergo very severe wear, overcoming the force of friction.
In general, the service life of the Lada Priora engine with a normal driving style and careful treatment is 200,000 km - after this mark the time comes when the “engine” requires major repairs. AvtoVAZ mentioned the timing belt separately as a recommendation, saying that it needs to be checked every 100,000 km (many car enthusiasts talk about the figure of 50,000 km).
All Lada engines have a problem, and it is related to the valves, which will be discussed further.
Characteristics (performance characteristics): Priora gearboxes
Priora is equipped with two gearboxes:
The five-speed manual transmission is always stable. The owner’s task is to monitor it and give it proper care, without relying on the car to “fix itself.” The gear ratios are such that they make the car with six-valve engines reach “hundreds” in just 11 seconds.
The robotic automatic transmission also comes with five speeds. It is a slight modification of the old reliable Japanese Jatco box. According to AvtoVAZ, it is not inferior in acceleration to cars with manual transmission. Errors such as kicks during overclocking may occur. They can be removed by reprogramming the ECU. The clutch is a dry single-plate clutch with a diaphragm pressure spring inside. The clutch release drive is cable with automatic adjustment.
Recommendations for improvement
For the first time, they decided to increase the power of the new Priora 21126 engine at the factory in order to create a sports modification of it. Camshafts with increased lift, a lightweight connecting rod and piston group were installed, and the intake and exhaust tracts were modified. This is how the first domestic sports unit appeared, which was put into production, and they began to install it on the Lada Granta Sport model.
The technical characteristics of the engine are as follows: engine power from the Priora has increased to 118 hp. torque - up to 154 Nm at 4700 rpm, fuel consumption also increased to 7.8 liters per 100 km with a combined driving cycle. We will give a number of recommendations on how to independently increase the power of Priora engines:
- The simplest and most affordable way is to install a zero-resistance exhaust tract. The essence of its work is to reduce the resistance of the path, as a result of which some of the power spent on overcoming this resistance will be released and become useful.
- The same operating principle applies to the zero-resistance intake tract. Installing the receiver and throttle valve to 56 mm will allow the power unit to “breathe” more freely, and your Lada Priora will become several horsepower more powerful.
- Deeper tuning - new camshafts with a sports configuration, allowing the intake and exhaust valves to open more. This will give a noticeable increase in the agility of the car, especially in city conditions.
- Replacing the standard valves and connecting rod-piston group with a lightweight one will again release some of the useful energy of the unit and add it to the main power. Here you can kill two birds with one stone: install pistons with recesses, thereby eliminating the possibility of them “meeting” with the valves when the timing belt breaks.
- We should not forget about CHIP tuning. After major changes in the engine configuration, its operating mode will definitely improve, and in order to optimize it and adjust fuel consumption, you need to do a flashing.
Recommendations are given taking into account that the power plant is in good technical condition. If this is not the case, when tuning it is worth replacing worn parts and oil in order to get the desired effect from the changes. As a result of the above measures, the Lada Priora will receive an additional 20-30 hp. without reducing the resource.
How many horses can Priora have in addition to this? Quite a lot, there are capabilities and components to increase the power ultimately to 400 hp. This is due to a radical modification of the power plant: boring the cylinders, grinding the cylinder head, replacing the injectors and fuel pump with more efficient ones, installing four throttle valves and a turbocharger.
We should not forget about modernizing the brake system. Such tuning will give excellent results in terms of power, but the engine life will be significantly reduced, and fuel consumption, on the contrary, will increase significantly.
EXCLUSIVE: we take apart the new 123-horsepower engine from AvtoVAZ piece by piece
Where and how to collect
To be precise, the Priora with a powerful engine is assembled not on the AvtoVAZ assembly line, but by a third-party organization. Togliatti has been producing special versions of Lada cars for decades. The current model range includes four special variants of the Lada 4x4 SUV (pickup, ambulance, emergency services and police), an extended version of the Priora Lada Premier and three standard body variants - sedan, hatchback and Priora station wagon - all with a new 123 hp engine.
"Super-Auto" is a small-scale production. The enterprise's capacity is enough to produce 500 Lada Priora 1.8 cars monthly. The scheme is as follows: a commercial vehicle arrives from AvtoVAZ, the engine is removed from it, which is rebuilt with the installation of original parts (connecting rod-piston group and crankshaft). Then the engine is reinstalled into the car, which undergoes running-in, acceptance and is sent to the Lada dealer. Despite the “small” series, the company operates in strict connection with AvtoVAZ - “Super-Auto” regularly visits the top management of the plant, and now all the quality standards introduced by Renault-Nissan at the Volzhsky Automobile Plant apply here.
Accessories
The Super-Auto production program already included a 1.8-liter engine for the Priora, but the current version is truly new. If previously, to increase the displacement, it was necessary to bore the block, increasing the cylinder diameter from 82 to 82.5 mm, now a larger working volume is obtained only by increasing the piston stroke, that is, solely through the use of a different connecting rod and piston group (CPG). The pistons are supplied by the North American company Federal-Mogul, and the connecting rods and crankshafts are Italian, but the supplier is not named.
After installing new components, the engine, which has the factory designation 21128, turns from the usual VAZ “short-stroke” into a “long-stroke” one, which makes it possible to obtain high torque at low speeds. To remove the increased load from the engine caused by increased inertial forces (after all, the piston stroke has become longer), the ShPG parts are made lighter - look, for example, what the pistons look like for a “charged” Priora! By the way, the quality of new components in Super-Auto is especially highlighted - they say that it was this quality that played a key role in the high reliability of this engine.
Power and torque
As you know, the engine for Lada Priora in the “Super-Auto” version is capable of producing 123 hp. maximum power and 165 Nm of torque. For comparison: for the standard Priora, these figures are equal to 98 hp, respectively. and 145 Nm. Increased power and especially torque on a VAZ engine is great, but much more interesting is the torque plate itself.
This is a fact: this engine already has 145 Nm of torque available at 2,200 rpm, that is, exactly the value that is the maximum in a regular Priora! As the speed increases to 3,500 - 4,000 rpm, the engine reaches maximum torque values of 165-166 Nm and maintains values close to these, almost until the cutoff. Accordingly, the driver has a sufficient supply of “traction” in a very wide (especially in comparison with the VAZ “stock”) speed range.
Dynamics and consumption
Priora 1.8 engines comply with Euro-4 environmental standards, the recommended fuel type is AI-95. If you believe the figures indicated on the AvtoVAZ and Super-Avto websites, then the fuel consumption in the combined cycle for standard and “charged” cars is 6.9 and 7.2 l/100 km, respectively. But the creators of the 1.8-liter engine say that the practical consumption indicators of their brainchild are on par with the stock one and can even exceed them if the driver were skilled - because now, in order to drive at a comfortable and dynamic pace, you don’t need to “twist” engine.
But from the time of acceleration to “hundreds,” the guys from “Super-Auto” managed to take off one and a half seconds at once! With an absolutely standard gearbox and a standard gear ratio of the main pair (3.7), the engine allowed us to achieve a result of 10 seconds versus the usual 11.5. You say it's nonsense? In the “absolute” this is really not very impressive, but in practice, for example, during intense overtaking on a busy highway, it gives the Priora driver absolutely real advantages.
Engine life
This is perhaps the most common question we hear regarding the new Lada Priora 1.8. The company assures that the engine life remained at the same level as the standard version. Indeed, he has nothing special to lose: unlike numerous previous “hot” versions of VAZ engines, this one is not “bored” and optimized for inertial forces. As proof, data from acceptance tests of this motor are provided.
A test copy of such an engine worked on the stand for 300 hours at maximum speed and under load - thus simulating 150,000 kilometers in real operation. At the end of the test, power and torque were measured - their readings remained at the passport level. Oil consumption is normal. Compression in the cylinders fell, but only slightly - by an average of 0.1. In short, the Lada Priora 1.8 is an ordinary civilian car, and not some kind of “kit car” with a seasonal lifespan. And given the high integration of Super-Auto into the structure of AvtoVAZ, it is hardly possible to believe that the auto giant would allow the release of a modification with consumer properties lower than those of the original product.
Who is the car designed for?
Nobody calls the 123-horsepower Lada Priora sports, this is its main difference from a car that, it would seem, should be considered a competitor - we are talking about the Lada Granta Sport sedan. But at Super-Auto, despite the similar characteristics of these cars, they deny competition, saying that these cars are designed for completely different target groups.
Lada Priora 1.8 is not a sport version of the standard Priora, but its more advanced, comfortable modification. And this is the correct positioning of this product. The creators' calculation is simple - the Priora driver now needs to make fewer switches. Where previously it was necessary to “tuck” the fourth, now you can drive in the fifth, both calmly rolling and accelerating quite intensively. Therefore, the car should be appreciated by both young people and the older category from among those who previously bought “just a Priora”.
What is the warranty?
Factory warranty is another pressing issue associated with various “special versions” of standard cars. But in the situation with the Lada Priora 1.8, everything is simple: yes, strictly speaking, this is a “side project” of AvtoVAZ, but preparations for the production of the car were carried out according to factory requirements, requirements introduced in recent years by partners from Renault-Nissan. Compliance with these requirements at the plant is now called “validation”. So, the Lada Priora 1.8 car has passed the validation.
In addition, the Lada Priora 1.8 car produced by Super-Auto has now passed acceptance tests and received vehicle type approval. All production cars will have their own VIN number and will be covered by the standard AvtoVAZ warranty of 3 years or 100,000 kilometers. Maintenance of these cars will be carried out in accordance with the routine maintenance from the service book at the service station of official Lada dealers.
How does the 123-horsepower Lada Priora 1.8 drive?
We indulged in the pleasure of taking this car for a short test drive. It is in pleasure, may the Maybach owners forgive us, that everything that was discussed above in theory is fully confirmed in practice. Of course, in everything else, except for the engine, the Priora remained a Priora with all its pros and, alas, cons. But, as you understand, this is not about now.
You can start driving this Priora practically from idle and without any problems. You can start in second gear, and after accelerating in second, immediately engage fourth or even fifth - the elasticity of the engine is at a level unprecedented for the Priora. If you start as intensely as possible, at maximum torque, you feel an excess of traction, and the wheels very easily slip. There is a lot of torque not only “below”, but also “above” - the engine vigorously accelerates the car almost to maximum speed. Both in dense city traffic and on the highway, driving this car is very convenient - minimum switching, maximum torque.
Price, equipment, where and when to buy
Lada Priora 1.8 cars will be made on the basis of the Priora in the Norma configuration, the equipment of which includes: a climate system, an on-board computer, audio preparation, 2 electric windows, electric and heated mirrors, electric power steering, driver airbag, ABS system. Prices are already known: for a sedan they are asking 422,000 rubles, for a hatchback - 427,000 rubles, for a station wagon - 431,000 rubles.
The start of sales of this car was planned for September, but in reality the first commercial vehicles will reach official Lada dealers in October. Considering the instability of the market, Super-Auto plans to release a trial batch of 100 cars (with a design capacity of 500 cars per month) and see how the consumer reacts. But demand for this car is not a question; buyers will certainly appreciate the improved engine. And in general, we now have no questions left for this car. Except, perhaps, for one thing: why don’t such “Priors” roll off the main AvtoVAZ assembly line?!
Source
Engine test tables and graphs
As you can see from the table, the power of the 1.8-liter engine has a positive effect on its dynamics and even consumption. It would seem that it is fuel consumption that should increase, but test results prove the opposite.
Engine power
In this graph, the favorite is immediately visible; there are practically no equal to the 1.8-liter engine.
General characteristics
Initially, the car was equipped with an 8-valve engine from the VAZ 2114, about which car enthusiasts in practice know all the characteristics, in particular, what kind of service life it has in different modes. Therefore, the first “Priors” did not receive rave reviews from customers.
Subsequently, the car was equipped with its own 16-valve unit modification 21126 with a displacement of 1.6 liters and a power of 98 horsepower, which made the VAZ 2170 truly competitive. Dynamic performance has been improved, emissions into the environment and fuel consumption have been reduced. Relatively recently, an updated version of the 21127 engine with a power of 106 hp appeared. which has been installed on Priora since 2013. Comparative characteristics of all three units are given in Table 1.
Table 1
| Specifications | Engine VAZ 2114 | Engine VAZ 21126 | Engine VAZ 21127 |
| Year of issue | 1994 | 2007 | 2013 |
| Cylinder block material | Cast iron | Cast iron | Cast iron |
| Type/number of cylinders | Inline/4 | Inline/4 | Inline/4 |
| Number of valves | 8 | 16 | 16 |
| Piston stroke, mm | 71 | 75,6 | 75,6 |
| Cylinder diameter, mm | 82 | 82 | 82 |
| Compression ratio | 9,8 | 11 | 11 |
| Working volume, cm³ | 1499 | 1597 | 1596 |
| Unit power, hp | 78 at 5400 rpm | 98 at 5600 rpm | 106 at 5800 rpm |
| Torque, Nm | 116 at 3000 rpm | 145 at 4000 rpm | 148 at 4000 rpm |
| Fuel consumption highway/city/mixed, l/100 km | 5,7/8,8/7,3 | 5,4/9,8/7,2 | Mixed – 7 |
Eternal dispute
One half of car owners are sure that 8V models are already hopelessly outdated. And buying a car with such an engine today is a waste of money. But the 16-valve power plant is a completely different matter.
The second half claims that for all their advantages, such units require more attention, are more expensive to maintain, and require higher quality oil. And if such a motor decides to fail, then it is easier to sell it for scrap. Moreover, if you consider how much the engine costs, the 8-valve engine is much better in this regard.
Let's try to find out which is better, consider all the pros and cons of each motor. Although it is impossible to say specifically that one of these two units is superior. Some want the power plant to be reliable and unpretentious, others need power, high technical characteristics, and smooth operation. As you can see, different categories of motorists pose different tasks. And the motors are different.
Updates and shortcomings
The table clearly shows how many horses the Priora had with the old power plant and how the power and torque changed as the update progressed. Here is a description of how the design features of the new units changed compared to the old ones:
- The number of valves has increased, there are 4 of them for each cylinder. It's no secret what a positive impact this factor has on engine performance. The filling of the cylinder with the combustible mixture improves, the chamber is qualitatively emptied of combustion products (exhaust gases), the operation of the unit becomes more stable, power increases while fuel consumption decreases.
- The compression ratio is increased by increasing the piston stroke. The new engine 21126 and 21127 now uses gasoline with a higher octane number, but at the same time the efficiency of fuel combustion increases, which has a positive effect on power. It’s impossible not to notice how the working volume of the Priora’s engine has increased thanks to the increased piston stroke.
- In modification 21127, compared to 21126, the intake manifold was modified. How this affected the engine performance of the Priora can be seen in the table. Power increased by 8 hp. in addition, performance at low and medium speeds has improved.
- The new engines on the Priora have better environmental performance and lower fuel consumption. This was achieved through such improvements as modernizing the crankcase ventilation system and reducing the weight of the piston group. Now crankcase gases are burned more intensively in the cylinders and the emission of harmful substances into the atmosphere has decreased.
- Over the many years of operation of VAZ vehicles, a definite opinion has developed that the power units of Zhiguli cars do not last 150 thousand km until they are overhauled. Now, due to the use of new, higher quality components, the engine life has increased to at least 200 thousand km.
Despite the fact that the updated Priora engine is almost the most advanced domestic unit, it has its drawbacks. For example, when a timing belt breaks, the valves inevitably collide with the pistons and bend - this is its most serious drawback. How to eliminate it without waiting for trouble? It is necessary to replace the standard pistons with new ones, with special selections for the valves.
The remaining shortcomings are not so significant and they are usually associated with some kind of defect that can still be found on domestic cars. This could be increased noise from the operation of hydraulic compensators (often found on VAZ cars), an unexpectedly burnt gasket under the cylinder head, or floating idle speed. Or some unit of the attached equipment fails:
- a drop in fuel pressure in the system leads to difficulty starting the Priora engine and loss of its power;
- sensor malfunctions;
- air leaks in the fuel tract through the pipes;
- problems with the injector throttle valve.
Disadvantages of 8V internal combustion engine
The first disadvantage is the relatively low power. Sometimes you can get only 15-20%. If the power of the unit is 100 horsepower, then it is only 15-20 hp. There are two valves per cylinder for intake and exhaust. This means that the intake and exhaust processes are slower. Therefore, it will not be possible to get high speeds with such a unit. Go ahead. 8V internal combustion engines have higher fuel consumption. Consumption is higher due to slower injection-exhaust cycles. The engine has to push the exhaust gases harder through a single exhaust element.
And finally, high noise, especially when driving at high speeds. Since the pusher is mechanical, it constantly requires adjustment. During operation, they develop wear and tear, resulting in gaps. Because of them, the efficiency of the power plant decreases and the engine begins to make noise. Hence the negative effect of using mechanical pushers. Many people also do not like to frequently adjust valve clearances. This is necessary for the engine to work better and to avoid excessive fuel consumption. As a result, the 8-valve engine is a reliable, unpretentious, simple system that runs on any oil and fuel. But in return we get the impossibility of stable operation at high speeds, low power and noise. If you consider how much the engine costs, then you can close your eyes to these disadvantages. Motors with an 8V layout are still successfully driven today. But they are no longer mass produced.
How much does engine 126 and 127 cost?
Engine 126 has catalog number 21126100026030, sells for about 107,000 rubles, engine 127, respectively, has catalog number 21127100026030, its price is slightly higher by 3-5 thousand rubles. The price on the secondary market will be significantly lower (up to 20-25 thousand rubles), but the savings will not pay off - a used “engine” can last no more than 1000 km, this is a real lottery.
How to find out what engine is in a Priora
You can find out by looking at the plate on the left glass of the rack, where the engine number is written on the edge. From it you can understand the 8-valve unit, or 16. You can also recognize the modification 21126 or 21127.
A little about the technical component
In technical terms, 8- and 16-valve internal combustion engines differ quite seriously from each other. But all the differences between them are in their upper part - in the motor head. This is where the camshafts are located. This is where the main design feature is hidden.
And for those who want to know which engine is better - 16-valve or 8, it must be said that from any unit you can make an 8V or 16V option. For example, in most AvtoVAZ cars, the engines are very similar in design to each other in terms of parts and mechanisms. The same engine block can be equipped with different cylinder heads with either one or two camshafts.
Signs of the need for internal combustion engine repair
The reasons why the operation of the engine is disrupted are arranged in a small list, starting with refusal to start and ending with floating idle speed (this problem was removed on the 127 “engine”). Not all breakdowns end in capital damage - sometimes it’s enough to add oil, sometimes it’s enough to adjust the ECU settings.
Compression reduction
A decrease in cylinder compression below 16 atmospheres is a bad sign. Such a high limit corresponds to a compression ratio of 11.
If the compression decreases (or vice versa increases), then the “engine” will have to be rebuilt.
Knocks in the engine
Engine knocks can come from several points. These could be hydraulic compressors, timing belt rollers or pins. The knocking noise could also be caused by low oil level. The answer to the question will be given by a thorough detailed inspection of all parts of the unit and checking the oil level.
Blue smoke from the exhaust pipe
The blue smoke that comes from the exhaust pipe appears when oil enters the combustion chamber. It can leak either from the valves or from under the piston. The result is the same: the oil is eaten up and blue smoke pours out of the chimney. Once the leak is located, half the problem will already be solved.
Troit motor
Sometimes in the cold the engine may stall - don’t be alarmed by this, because it may simply be one of the spark plugs that fails. In this case, we advise you to simply restart the engine and it will stop running.
Replacing hydraulic compensators on VAZ-2110, 2111, 2112
Hydraulic compensators (hydraulic pushers) of valves are used to automatically adjust thermal valve clearances. In essence, they are a kind of gaskets between the camshaft cams and valves, capable of changing their thickness.
Their use in the engine makes it possible not to systematically adjust thermal clearances.
The design of the hydraulic compensator consists of a cylinder-shaped body and a plunger, including a bushing, a ball valve and a spring.
The principle of its operation is as follows. When the cam turns its blunt side towards the pusher, a gap appears between them. At this time, the spring-loaded plunger rises up, closing it, and the oil enters the plunger cavity through a channel with a ball valve.
Turning the other side, the cam presses on the pusher, directing it down. The valve is closed by a ball. In this way, the plunger transmits the force of the cam directly to the valve.
Engine
Lada Priora has undergone changes several times, both externally and technically. The appearance, power plant and transmission changed.
Below is an example of engines that were installed on the VAZ 2170-72.
Engine 21116 (8 valves)
This engine was installed on the VAZ 2114 and Lada Kalina, and was later inherited by the Priora. The power of this internal combustion engine is 80 hp. with a volume of 1.6 liters, which is very small. Such an engine does not have good dynamics, and it is difficult for it to “drag” the body of the Priora.
Pros:
- Does not bend valves;
- Easy to maintain;
- Cheaper spare parts;
Minuses:
- Low power;
- Noisiness;
The installation of such an engine continued until 2022.
Engine 21126 (16 valves)
16 valve engine with more power and torque compared to 116. It is a modified model of the 124 engine. Its power is 98 hp. with a volume of 1.6 liters.
Pros:
- Great power;
- No noisy operation;
Minuses:
- Bend valves when the belt breaks;
- Expensive spare parts;
Engine 21127 (16 valves)
The modified 126 engine received the index 21127; the intake in this engine was changed, thereby increasing the power to 106 hp. with the same volume of 1.6 liters. They began to install a new cable gearbox for this engine.
Pros:
- High power;
- No noisy operation;
Minuses:
- Bend valves;
- Expensive spare parts;
Engine 21128 (16 valves)
This engine was specially designed for more powerful Lada cars with the “Super Auto” nameplate. The power of this engine has increased, as has its volume. The number of horsepower in the super car engine increased to 123, and the volume to 1.8 liters, which radically affected the dynamics of the car.
Pros:
- Good dynamics and high power;
Minuses:
- Bend valves;
- More expensive spare parts;
Which power unit is better to choose?
If we summarize all the above features, then the following becomes clear:
- An engine with 8 valves is easier to maintain, cheaper to repair, works better on low-quality fuel and oil, and is well suited for installing gas equipment. At the same time, such an engine consumes more fuel, produces less power, is more vibration-loaded and noisier.
- A power unit with 16 valves allows for better dynamics, it is more powerful, consumes less fuel, and does not vibrate as much. In parallel with this, the requirements for the quality of fuel and lubricants are increasing, and the costs of maintenance and repairs are increasing.
Where is the engine identification number on the Priora?
The engine code is found using these three means:
- lighting device;
- car passport;
- vehicle operating instructions.
The Vin code of a car from the VAZ manufacturer can be located in several standard places, regardless of the modification of the car or the number of valves:
- on the cylinder on both sides or on one;
- near the hole where the amount of engine lubrication is checked;
- where the engine is connected to the automatic or manual transmission;
- at the base of the corrector.
Sometimes the motor coding may be located in a different place. But this rarely happens.
Engine number on 16 valve
The engine number of 16 valves on a Priora can be viewed by first removing the air filter housing. Disconnect the corrugation. Using a mirror, the car owner will see two rows of numbers. Since the coding is located on the cylinder block below the thermostat housing.
To read the numbers and compare with the documentation, you will need to use a rag and WD 40 to clean the metal. The numbers tend to get dirty with dust.
Engine number on 8 mi valve
On an eight-valve Lada Priora engine, the engine coding is in the same place as on a 16-valve engine. The numbers are located on the end of the cylinder block, above the clutch housing. But there are also exceptions.
For example, on new models, the manufacturer may change the location of the motor code. In this case, he usually indicates the location of the VIN code in the technical passport for the car.
Lada Priora is the most stolen car among other domestic vehicles. Therefore, a car owner should always have an idea where the engine coding is located in order to refuse to buy a stolen car. Therefore, next we will talk about exceptions to the location of plates with vehicle data.
More modern 16 valve engine and 8 valve: the difference
To begin with, four-cylinder engines with 8 valves (two for each cylinder) are a long-standing, reliable and time-tested design. Today, some auto manufacturers are actively installing such engines in their budget versions of cars.
Also on a similar vehicle model you can find a more modern 16 valve engine. In other words, the buyer can independently choose a more suitable type of internal combustion engine. For a better understanding, it is necessary to understand what advantages and disadvantages one and the other design has.
Design Features
All internal combustion engines on Priora operate at a temperature of 95 degrees. They are able to withstand such high degrees thanks to a special alloy of the cylinder head, which does not deform when heated to high temperatures.
However, if it’s hot outside, the engine quickly heats up and in traffic jams it starts to push and stall. Operating a power device at temperatures above 110 degrees is dangerous for it. The lifespan is reduced, rubbing parts wear out quickly.
Crank mechanism
The engine pistons are made of an alloy of aluminum and silicon. This ensures their high wear resistance and temperature resistance. The head of each piston is cylindrical with a flat bottom. The skirt is oval in cross section and barrel-shaped in longitudinal section.
To improve and speed up the running-in of the mechanism, the entire surface of the piston is coated with tin. And compression rings are cast from cast iron. The outer surface of the upper ring, which is adjacent to the cylinder, is coated with chrome plating. This increases the lifespan of the ring.
The height of the compression rings is 2 mm, and the height of the oil scraper ring is 4.9 mm. The piston pins are made of low alloy steel. They are selected for the pistons with minimal clearance. This is necessary to prevent your fingers from knocking while working.
timing belt
The timing belt of the Priora car is made of a durable belt. Many car owners say that it is the gas distribution mechanism that is the problem with Priora engines. At 100 thousand kilometers you may find cracks on the timing belt or light chips in the rubber. This means that he is living his last kilometers. When replacing a belt, it is best to change the entire gas distribution mechanism. Namely, sprockets, a crankshaft toothed pulley with a washer, sometimes replace the generator belt.
The belts that are installed in engines on Lada Priora have 137 teeth. If one wears out, slippage begins, and sometimes the belt can hit the valves. As a result of the break, it hits the valves with 100% accuracy and bends them.
Therefore, experienced mechanics recommend putting the car in for preventive maintenance every 12 months or 100,000 kilometers. Thus, the car owner will avoid major engine repairs or complete replacement.
Systems
The closed liquid cooling system on the Priora allows the engine to cool better on hot days or when idling in traffic jams. It effectively removes heat and prevents the Priora from overheating even at temperatures of plus fifty Celsius.
The power supply system on the car is injection. Carburetor systems are already a thing of the past. Now the fuel is injected into the combustion chamber at a certain angle, oil and air are supplied and then everything is mixed. Such innovations ensured stable operation of the motor.
Similar article Technical characteristics and maintenance of the 603 Mercedes engine
The upgraded crankcase ventilation system does not allow large amounts of exhaust gases to be released into the atmosphere. The reduction and modernization of the connecting rod and piston group reduced the amount of gasoline consumed by the Priora engine.
Let's look at the list of cars on which these engines were installed.
Service
The power unit must undergo periodic maintenance every 10 thousand kilometers.
Under severe operating conditions, oil and filter changes should be carried out every 7.5 thousand. When replacing the oil filter, you should pay attention to oil leakage through the valve cover seals. This malfunction is due to the poor quality of the sealing gasket, which leads to contamination of the cooling surfaces and overheating of the motor.
A special feature of the maintenance of this engine is the periodic replacement of hydraulic valve compensators.
When operating a car with this engine, its temperature should be controlled - 95-98 degrees Celsius, otherwise the elements of the cooling system will wear out very quickly. The cause of this is usually the thermostat, which is the weak element in this system.
Removal of the exhaust pipe should be carried out with extreme caution; instead of copper nuts, the manufacturer installed steel ones; if they sour, the mounting brackets can break off. When carrying out this type of work, it is better to immediately replace these nuts with copper ones.
The worst feature of this engine is that when it fails, the engine bends the timing valve, leading to expensive repairs. Tensioning and replacing the timing belt is best done at a service center. The Lada Priora engine has 106 hp. p., according to reviews from owners, high-quality oil should be poured, otherwise the hydraulic valve compensators will fail very quickly.
The engine is also marked by knocking in the elements of the crank mechanism, main and connecting rod bearings, while the engine shakes.
Recommendations for improvement
For the first time, it was decided to increase the power of the new Priora 21126 engine at the factory in order to create a sports modification of it. Camshafts with increased lift, a lightweight connecting rod and piston group were installed, and the intake and exhaust tracts were modified. This is how the first domestic sports unit appeared, which was put into production, and they began to install it on the Lada Granta Sport model.
The technical characteristics of the engine are as follows: engine power from the Priora has increased to 118 hp. torque - up to 154 Nm at 4700 rpm, fuel consumption also increased to 7.8 liters per 100 km with a combined driving cycle. We will give a number of recommendations on how to independently increase the power of Priora engines:
- The simplest and most affordable way is to install a zero-resistance exhaust tract. The essence of its work is to reduce the resistance of the path, as a result of which some of the power spent on overcoming this resistance will be released and become useful.
- The same operating principle applies to the zero-resistance intake tract. Installing the receiver and throttle body to 56 mm will allow the power unit to “breathe” more freely, and your Lada Priora will become several horsepower more powerful.
- Deeper tuning - new camshafts with a sports configuration, allowing the intake and exhaust valves to open more. This will give a noticeable increase in the agility of the car, especially in city conditions.
- Replacing the standard valves and connecting rod-piston group with a lightweight one will again release some of the useful energy of the unit and add it to the main power. Here you can kill two birds with one stone: install pistons with recesses, thereby eliminating the possibility of them “meeting” with the valves when the timing belt breaks.
- We should not forget about CHIP tuning. After major changes in the engine configuration, its operating mode will definitely improve, and in order to optimize it and adjust fuel consumption, you need to do a flashing.
Recommendations are given taking into account that the power plant is in good technical condition. If this is not the case, when tuning it is worth replacing worn parts and oil in order to get the desired effect from the changes. As a result of the above measures, the Lada Priora will receive an additional 20-30 hp. without reducing the resource.
How many horses can Priora have in addition to this? Quite a lot, there are capabilities and components to increase the power ultimately to 400 hp. This is due to a radical modification of the power plant: boring the cylinders, grinding the cylinder head, replacing the injectors and fuel pump with more efficient ones, installing four throttle valves and a turbocharger.
We should not forget about modernizing the brake system. Such tuning will give excellent results in terms of power, but the engine life will be significantly reduced, and fuel consumption, on the contrary, will increase significantly.
Technical characteristics of the VAZ 21126 1.6 16kl engine
| Type | in-line |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Exact volume | 1597 cm³ |
| Cylinder diameter | 82 mm |
| Piston stroke | 75.6 mm |
| Supply system | injector |
| Power | 98 hp |
| Torque | 145 Nm |
| Compression ratio | 10.5 – 11 |
| Fuel type | AI-92 |
| Environmental standards | EURO 3/4 |
| Type | in-line |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Exact volume | 1597 cm³ |
| Cylinder diameter | 82 mm |
| Piston stroke | 75.6 mm |
| Supply system | injector |
| Power | 114 – 118 hp |
| Torque | 150 – 154 Nm |
| Compression ratio | 11 |
| Fuel type | AI-92 |
| Environmental standards | EURO 4/5 |
| Type | in-line |
| Number of cylinders | 4 |
| Number of valves | 16 |
| Exact volume | 1597 cm³ |
| Cylinder diameter | 82 mm |
| Piston stroke | 75.6 mm |
| Supply system | injector |
| Power | 136 hp |
| Torque | 154 Nm |
| Compression ratio | 11 |
| Fuel type | AI-92 |
| Environmental standards | EURO 5 |
Rules for long-term use
Surely every Priora owner wants to operate his car without unnecessary unexpected costs and is thinking about how to increase the car’s service life. To do this you need to follow a few simple rules:
- The power unit of the VAZ 2170, even without various improvements, has sufficient potential for “spirited” driving. But in order to save it and extend its life, such driving should be avoided. Smooth acceleration and maintaining a stable speed not only on the highway, but also in the city will help extend the life of the engine and save fuel and your own money. The maximum permissible speed on the highway should be no higher than 120 km/h, the optimal speed is 100-110 km/h, and it is important to maintain stability.
- It is important to timely replace consumables, that is, oils in units, filters, spark plugs, high voltage wires, generator and timing belts, and coolant. The interval between engine oil changes depends on its quality and chemical base. Mineral-based oils should be changed more often, synthetic oils less often. You should never determine the quality of motor oil by its color. If it has acquired a black tint, this does not mean that the oil is bad - it means that an excessive amount of combustion product deposits is formed in the engine. First of all, you need to find the source of the carbon deposits and eliminate it, and then change the oil.
- The new engine must be properly broken in, and then the oil must be changed, following the manufacturer's instructions. When running in, avoid increased loads, sudden movements of the accelerator pedal, and do not exceed the speed specified in the instructions.
- Always monitor the engine coolant temperature, check the operation of the electric cooling fan, thermostat and temperature sensor. Overheating is the main enemy of the piston group; every time the temperature is exceeded, it wears out intensely, and the life of the unit is sharply reduced.
“Lada Priora” is a modern high-speed domestic car that will bring its owner a lot of positive impressions and driving pleasure, provided that the engine is cared for and properly modified and operated.
Gates timing drive design
The VAZ 21126 engine uses a new mechanism for automatically tensioning the toothed belt and gas distribution mechanism, which has rollers of an advanced design. The timing belt from the German manufacturer Gates has a new oval tooth profile. In this regard, pulleys with a similar profile are installed on the internal combustion engine on the camshaft, water pump shaft and crankshaft. The profile of the working surface of the pulley coincides with the profile of the semicircular tooth of the timing belt. The belt from the German manufacturer Gates has a width of 22 mm, 137 teeth, its marking is 76137x22. The manufacturer guarantees a product service life of up to 200 thousand km.
However, this should not be trusted. Unscrupulous manufacturers have appeared that produce counterfeit products from well-known brands. The appearance of the fake is the same as that of the genuine product. It is not possible to visually distinguish a low-quality belt. Therefore, there are complaints from drivers of a broken timing belt with a mileage of less than 100 thousand km. And the design of the pistons is such that when the timing belt breaks, mechanical damage to the ShPG parts occurs.
What to do if the number is interrupted
If it turns out that the car owner purchased a stolen car, but the code was broken, then the traffic police will no longer return the documents for the vehicle. In the best case, you will have to buy a new engine, in the worst case, you will have to sell the Lada Priora for spare parts.
It is no longer possible to register or deregister Priora. Riding on it will also be prohibited. That's why it's so important to pay close attention to the VIN code when buying a car.
Exceptions
For example, in some older Lada Priora models with a 16-valve engine, car owners will not find stamped numbers in the usual place. This is prevented by the characteristic features of the car. Therefore, the manufacturer recommends looking in the following places when trying to compare the stamped motor code with the documentation:
- right wing front;
- at the bottom of the body;
- in the cabin, to the left of the driver's seat.
If it is not found in these places, then you need to look for it in the old ones. It is better to immediately find out the VIN code of the engine from the selling car owner, so as not to have problems with the traffic police later. It is necessary for the seller to show where the number is located and help in checking it with the code that is written in the documents.
Engines Lada Priora 8 valves
VAZ 21114 – 80 hp
120 Nm This power unit was inherited from the Lada Priora from the previous VAZ 2110 model and was installed only on sedans or hatchbacks in the simplest Standard configuration. Such an engine is rare, since already in 2011 it gave way to the 21116 engine.
VAZ 21116 – 87 hp 140 Nm
There were relatively many design changes in the updated 8-valve unit: a lightweight piston from Federal Mogul, an intake manifold with an electronic throttle, a particularly durable Gates belt with a service life of 200,000 km and an automatic tensioner. The downside is that there are no recesses in the pistons and now the valve bends when the belt breaks.
Sedan 2007 – 2015 1.6 l 21114 manual gearbox51.6 l 21116 manual gearbox5
| Type | injector | injector |
| Fuel | gasoline AI-92 | gasoline AI-92 |
| Location | transverse | transverse |
| Cylinders | 4 in a row | 4 in a row |
| valves | 8 | 8 |
| Working volume | 1596 cm³ | 1596 cm³ |
| Power | 80 hp | 87 hp |
| Torque | 120 Nm | 140 Nm |
| Acceleration to 100 km/h | 12.5 s | 11.5 s |
| Speed (max) | 172 km/h | 176 km/h |
| Ecological Class | Euro 3/4 | Euro 3/4 |
| Consumption city | 9.8 l | 9.5 l |
| Flow track | 5.8 l | 5.6 l |
| Mixed flow | 7.6 l | 7.3 l |
8V motors
This power unit has only one camshaft. It controls the operation of the exhaust gas injection and exhaust system. In theory it looks like this. Each cylinder has two valves. One of them is designed to supply the fuel mixture to the combustion chamber. It opens when fuel is supplied to the cylinder. The second serves to remove exhaust gases. This element opens at the moment when the combustible mixture has already burned and it is only necessary to release the gases into the exhaust system. The opening/closing of the valves is controlled by the camshaft. It has conical metal sections. When the shaft rotates, it presses on the valves with these areas. It opens or closes.
So, each cylinder is equipped with two valves. And since there are 4 cylinders in a standard typical engine, this results in 8 elements. Of course, the 4-cylinder engine is not the only unit, only more common. There are 6-, 8-, and 12-cylinder engines. But these internal combustion engines are very rare for passenger cars. In trucks, 8-cylinder engines are more relevant. For example, the YaMZ 238 engine. It has 16 valves. But in reality there is only one intake and exhaust per cylinder. The power of this unit ranges from 180 to 240 hp with a working volume of 14.8 liters.
Lada Priora engines 16 valves
VAZ 21126 – 98 hp
145 Nm In the Norma and Lux trim levels, a 16-valve internal combustion engine was installed, and it was immediately a modernized series with a lightweight piston from Federal Mogul and a durable belt from Gates Rubber Company. Another advantage is hydraulic compensators, which save you from adjusting the valves. This is the most popular Priora unit; it was installed from the very beginning until almost the end of production.
VAZ 21127 – 106 hp 148 Nm
The 2013 update brought a new engine with a variable-length intake manifold. It was with this engine that completely new gearboxes appeared: the manual VAZ 2180 with a cable drive, as well as the VAZ 2182 robot, created on its basis.
Station wagon 2009 – 2015 1.6 l 21126 manual gearbox51.6 l 21127 manual gearbox5
| Type | injector | injector |
| Fuel | gasoline AI-92 | gasoline AI-92 |
| Location | transverse | transverse |
| Cylinders | 4 in a row | 4 in a row |
| valves | 16 | 16 |
| Working volume | 1596 cm³ | 1596 cm³ |
| Power | 98 hp | 106 hp |
| Torque | 145 Nm | 148 Nm |
| Acceleration to 100 km/h | 11.5 s | 11.3 s |
| Speed (max) | 183 km/h | 185 km/h |
| Ecological Class | Euro 3/4 | Euro 4 |
| Consumption city | 9.1 l | 8.9 l |
| Flow track | 5.5 l | 5.6 l |
| Mixed flow | 6.9 l | 6.8 l |
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Lada Priora engine problems
The main malfunctions of all 1.6-liter engines are similar and we have summarized them in one table:
— weak electrics: unreliable sensors, electronic throttle glitches, and so on
— a thermostat that often sticks, which results in overheating and gasket breakdown
- oil leaks, with it getting into the spark plug wells, onto the timing belt and other places
— timing belt break due to wear, roller wedge or pump, which is fatal for the internal combustion engine
Why we love and don’t love the 126 Priora engine
Malfunctions
Despite various upgrades, the engine in the VAZ 21127 retained all the faults of its predecessor, the main ones of which are shown in the table:
| FAULT | CAUSE |
| The engine starts to stall | Coking of injectors. |
| Malfunction of ignition coils. | |
| Reduced compression. | |
| Cooling system overheating | Thermostat malfunction. |
| Formation of a mud coat as a result of oil leakage. | |
| Knocks and noises at the top of the engine | Malfunctions of hydraulic valve compensators |
| Knocks at the bottom of the engine | Main bearing wear |
| Knocks in the middle of the engine | Connecting rod bearings and piston pin faults |
| Bend cylinder head valves | Belt drive slipping through gear tooth |
| Interruptions and startup problems | Violations in the operation of the timing belt. |
| Malfunctions in the fuel pressure system. | |
| Air leak. | |
| Broken throttle valve. | |
| Sensor malfunction. | |
| Power reduction | Burnt out timing head gasket. |
| Burnout of pistons, wear of rings and cylinders. |
Factors affecting the service life of the VAZ 2170
According to the manufacturer, the ICE 21126 with sixteen valves has a stable operation duration of 200 thousand kilometers. After a certain mileage it is necessary to carry out major repairs. Taking good care of the VAZ 2170, proper maintenance (MOT) and timely replacement of damaged components and parts will lead to a long service life of the vehicle.
Reasons affecting the service life of the power unit:
- Engine overheating. Elevated temperatures of a running engine negatively affect the overall service life of the motor. Maintaining the operating temperature of the power unit elements at a constant level significantly extends its operating time.
- Fuel. The vehicle's owner's manual contains detailed information about the recommended brand of gasoline. Filling the 16-valve Priora engine with fuel must be of proven quality.
- Machine oils. Which oil is best to fill, its brand and how much lubricant is needed is indicated in the accompanying documentation for the car. The 126 sixteen valve engine accepts semi-synthetic and synthetic motor oils most well. A complete oil change should be carried out annually or after a mileage of 15 thousand kilometers.
Sources
- https://priorik.ru/126-i-127-dvigatel-na-prioru-16-klapanov-resurs-priznaki-polomki/
- https://VmyatynNet.ru/na-zametku/priora-dvigatel.html
- https://medwegonok.ru/dvigatel-vaz-priora-16-klapanov-tehnicheskie-harakteristiki/
- https://1ladapriora.ru/tyuning/dvigatel-harakteristiki.html
- https://enginehack.ru/dvigatelya-priory/
- https://dvsoff.ru/tip/8-i-16-klapannye-dvigateli-priory
- https://otoba.ru/auto/lada/priora-dvigateli.html
Are the valves bending?
In Lada Priora cars, even in a 16-valve 126 power unit, valves can often bend. The reasons causing this defect lie in non-compliance with operating rules, in case of violation of the regulations for replacing the following components and parts:
- rollers;
- timing belt;
- water pump.
If one of the listed components breaks down, the pistons, exerting mechanical stress on the valves, can bend them. The design features of the engine are the reasons why the engine can bend valves. Deformation of the valves necessitates a major overhaul of the Priora engine.
