Bending of valves on the Priora - theory and practice of solving the problem. What lada grant bends the valve how to find out

Engine Lada Grants 8 valve volume of 1.6 liters is currently the most popular among buyers of a budget sedan. The design of the motor is well known not only in the official service, but also in any garage. Therefore, repair and maintenance this motor is easy and relatively inexpensive. Today we'll talk in more detail about this engine.

Petrol power unit Lada Granta VAZ-11186 with 87 hp with a displacement of 1.6 liters replaced the VAZ-11183 injection engine developing 82 horsepower... The new lightweight piston group from Federal Mogul was able to increase the power and efficiency of the power unit. Of course, the motor does not differ with enchanting dynamics and low fuel consumption, but its relatively simple design and maintainability allows us to speak of a good option for our harsh operating conditions.

As for the device of the technical part, it is based on a cast-iron cylinder block, an aluminum head, an aluminum cylinder head cover, a steel oil sump. In the timing drive Lada Granta 8-cl. there is a belt. The eight-valve timing mechanism does not have hydraulic lifters, valve adjustment is rare, but the process is quite painstaking. It is necessary to select “pennies” of different thicknesses and lay them between the camshaft cams and the bottoms of the pusher glasses. The first time such a procedure is carried out at the so-called "0" zero maintenance, after 3000 km of run.

The age-old question Does the valve bend on the Grant engine VAZ-11186 when the timing belt breaks? The answer is unequivocal, if the belt breaks valve bends! A 5-speed motor is supplied as a pair. mechanical box transfers, no other options are provided.

Engine Lada Granta 1.6 (87 hp), fuel consumption, dynamics

• Working volume - 1597 cm3
• Number of cylinders / valves - 4/8
• Timing drive - belt
• Cylinder diameter - 82 mm
• Piston stroke - 75.6 mm
• Power hp / kW - 87/64 at 5100 rpm
• Torque - 140 Nm at 3800 rpm
• Maximum speed - 167 kilometers per hour
• Acceleration to the first hundred - 12.2 seconds
• Fuel consumption in the city - 9.0 liters
• Combined fuel consumption - 6.6 liters
• Fuel consumption on the highway - 5.8 liters

Timing diagram Lada Granta 8 valves

• 1 - crankshaft toothed pulley
• 2 - toothed pulley of the coolant pump
• 3 - tension roller
• 4 - back protective cover
• 5 - toothed pulley of a camshaft
• 6 - timing belt
• A - lug on the rear protective cover
• B - mark on the camshaft pulley
• C - mark on the cover of the oil pump
• D - mark on the crankshaft pulley.

Another feature of the motor is the location of the water pump (pump), which rotates the same timing belt... That is, in the event of coolant leaks or characteristic noise / whistle / hum in the timing area, a belt check is mandatory. If the pump bearing crumbles and the belt falls off, then in addition to replacing the water pump housing and belt, you will also have to sort out the cylinder head, removing the bent valves from there.

Before buying or after, but the owners of the new AvtoVAZ will sooner or later start to worry about the question: "Does the valve on the Lada Granta bend when the belt breaks?" And motorists are puzzled by this problem for a reason, because previous models often sinned with this extremely unpleasant defect. When the timing belt broke, the valves bent, especially on 16-valve Dvenashek and Prior engines.

As you know, Lada Grant is based on Lada Kalina in conjunction with its reliable engines and non-flexing valves. But, unfortunately, only the owners of the Lada Grant in the "Standard" configuration can breathe easy. But the Lada Granta "Norm" is equipped with an eight-valve engine with a lightweight connecting rod-piston mechanism, and in such an engine, if the timing belt breaks, the valve will certainly have a fatal meeting with the pistons. After such collisions, repairs, of course, cannot be avoided. It seems to be strange - engines almost identical in characteristics have different designs. But everything is explained by the fact that on standard 8-valve engines, the pistons have recesses for the valves and they do not meet when the belt breaks. But the same engines, but with a lightweight connecting rod-piston group, are equipped with shortened pistons, in which there is simply no room for recesses. Therefore, a break in the timing belt will inevitably lead to a bending of the valves.

The Lada Priora engines have the same problem, although their belt is wide enough and the probability of rupture is minimized. Extensive operating experience this car showed that a timing belt break occurs extremely rarely and then when starting to move in tow or from a pusher, which, in principle, is strictly forbidden to do, because when starting the engine, in this case, the load on the camshaft is too high and the belt jumps over several cutters, which leads to sad results.

Be that as it may, the motorist is obliged to monitor the condition of the timing belt, even if the pistons have valve recesses. Prevention has not harmed anyone yet, but repairing this whole thing somewhere on the highway is not a pleasant occupation.

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Year of issue: 2014.
Asks: Anthony Soprano.
Essence of the question: bought a 16-valve Lada Granta, is it worth changing the timing belt, is the valve bending?

Hello everyone, I bought a 16-valve Lada Granta from hand. It is 2014, mileage 45,000 km, the previous owner says that the timing belt has not yet been changed. Is it worth changing the belt on such a run? Does the engine on my Grant bend the valve if the timing belt breaks, for example, when the pump is jammed?

16 valve on Grant valve bends

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Expert on Lada cars with many years of experience. I own a Lada Grant car, collect cramps at the Priora base. Sometimes I spend the night in the garage. My wife is more jealous of cars than women.

16 valve engine bends valve!

Bent valves after breaking the timing belt on the Grant

All engines on the Lada Granta are bent valves, with the exception of the engine that is installed. This engine has a power of 82 hp, and Grant inherited it from Kalina.

The 16-valve engine model is also not without this disadvantage. Or maybe this is a plus, such archaism?

Why not make a groove in the valves?

It would seem that go to the side of the consumer and make a groove in the valves, but not everything is so simple. Especially on a 16-valve engine, which is equipped with hydraulic lifters and requires more complex tuning.

Details on replacing the timing belt in the article: Do-it-yourself replacement of the timing belt with a 16 valve Lada Granta.

You will find out whether the 11186 engine bends the valve and whether the valve on the viburnum bends 1 4 16 valves or 1 6 8. Read the comments and expert advice here.

Answer:

Many owners of Lada Kalina are familiar with the problem when the timing belt breaks, and in the future the valves are damaged. Therefore, car owners often wonder how the 11186 engine behaves and whether it bends the valve? Only the improved model has lost this problem, according to the buyers.

But fears about this do not disappear at all. Therefore, it is worth spending a little time to figure out which model will become the most reliable.

Not all 8-valve engines are problematic, according to current Grants owners. For example, a truly high-quality power unit is on the "Standard" package. The future owner of this option is unlikely to face serious damage.

But the driver who purchases the "Norma" model may be worried. A break in timing belts will usually result in a repair. Which, in turn, takes quite a long time, can get expensive. At first glance, the engines are absolutely identical, but their equipment is different. That is why the type of unit is important for those who are just going to buy a car.

11183 - designation of a rather noisy engine. But in this case, the valves will remain intact, even if the timing belt is damaged.

Does the valve bend on the viburnum 1 4 16 valves?

Most buyers want to find out in advance if the valve on Kalina is bending 1 4 16 valves? It should be noted that this is a serious problem that occurs not only in domestic, but also in foreign models.

For example, such a situation necessarily occurs in a 16-valve engine with a volume of up to one and a half liters. This option is almost never installed, but it used to be quite common in the tenth family.

The model 21126 can also be called a little problematic. If you do not take care of the maintenance of this part of the car in time, the entire piston system may break. When valves and pistons meet, 21116 causes a lot of trouble. This engine has a lightweight group. This led to the fact that there was no room left for the grooves in the pistons, and therefore the bend occurs.

16 valves 1.4 liters. Quite an economical device, but it also did not remain without this problem.

Finally, VAZ 21127 can be attributed to the list of "dangerous" motors. The choice of components and spare parts is the most important point for those who still want to avoid expensive repairs. Timely replacement of the seam will also help. When buying, you should pay attention to the seam. If it is, then it is better to purchase another model.

Does the valve on the viburnum bend 1 6 8 valves?

Many car lovers are now asking whether the valves on Kalina bend 1 6 8 valves. Are there models in which nothing extra happens? Such options are quite possible to pick up if you look closely.

For example, a good choice is 8 valves for 1.6 liters, or one and a half liters. These are versions of earlier power plants, they were mounted on older models. The 1.6-liter model has already appeared on more modern vehicles. The pistons have special deep recesses designed specifically for the valves. This is enough to avoid violent collisions.

The modification 21124 with a unit for 16 valves and 1.6 liters became successful. At one time, a VAZ 2112 was produced with such a complete set. In this regard, the car was powerful and reliable, therefore it was in great demand among buyers.

The best prevention for any car is constant inspections of the belt itself to see if it has worn out. The tensioner pulley must also be replaced if necessary. It is he who contributes to the fact that the wear of the entire system increases. The likelihood of a belt breaking is increased many times even if a defective product comes across.

The problem can be solved by replacing the piston group, but this is not a cheap pleasure. Especially if you work with official dealers. An independent preventive examination will become more budgetary.

Variants of 8-valve engines are well known to the owners of Lada Grant from the previous AvtoVAZ models. These engines have indexes 11183 and (11186, 21116),.

The domestic consumer is very afraid of breaking the timing belt. Therefore, this issue plays an important role when choosing a car modification.

In such a situation, bending of the valves may occur, which popularly gave rise to the saying “ fist of friendship". There is even a slang for motors that bend valves as "Plug-in", and motors that are devoid of this drawback are "plug-in".

Gallery of engines on which the valve is bent

Modification 11183 (Standard equipment, 82 hp)

The very first modifications of the car Grants came with a non-lightweight connecting rod-piston group, on such engines the valve does not bend, it all depends on the speed at the time the belt breaks. These engines were installed on cars and had the designation 11183. The advantage of this engine is its high torque, at the bottom it runs like a diesel!

In fact, this is a complete copy of the VAZ-2108 engine, only with an increased volume, and the owners of nines boasted to all the stories about how the timing belt broke and nothing happened to the engine.

Engine 11186 (87 hp) - valve bends!

Engine 11186 (under the hood)

11186 engine specially for the site from Igor Grantovod

When the timing belt breaks on the 11186 engine of the Lada Grants car, the valve is oppressed, there have already been many cases that have confirmed this hypothesis. The most successful scenario when the timing is broken on this engine is the bend of the intake valves.

Engine 11186 (removed from the car)

Engine 21116 (87 hp) - valve bends!

21116 engine bends valve

This engine is installed on a Lada Grant car in the "Norma" configuration. And he bends the valve too, unfortunately.

How to check the condition of the timing belt?

To visually check the timing belt, remove the timing cover. It is not difficult to do this, there is a lot of space under the hood on 8 valves. Remove the cover and begin visual inspection of the belt. It should be like new, without cracks and pores, without dirt and plaque, dry.

If the condition of the belt causes concern, then it must be replaced, for more details in the article: replacing the timing belt on an 8-valve Grant.

How to check the condition of the pump and idler pulley?

To check the condition of the pump, you must remove the lower half of the timing cover. Next, loosen the belt tension by loosening the tension roller. Check the pump performance, twist it and see if there is any backlash. If there is a backlash, then do not pull, and change the pump, as it may jam in the near future.

In the same way, the tension roller is checked for play.

Also, you should be alerted by extraneous noise when the engine is running. A sign of an imminent breakdown of the pump and rollers is the sound of "rustling" of these elements.

There have been cases of a break in the timing belt and bending of the valves as a result of a jammed pump and on a run of no more than 20,000 km.

Car engine

The first VAZ 2110 cars were produced with an 8-valve engine with a volume of 1.5 liters, and later with 1.6 liters. On such units, when the timing belt breaks, the valves are not bent. This is explained by their absence in the piston. In the tenth generation, VAZ 2112 cars with a 16-valve engine and a volume of 1.5 liters appeared. With the release of this model, many car owners began to face a problem when the valve bends on the Priora. The design of the new motor has changed. Due to the 16-valve head, the power of this unit has increased from 76 hp. up to 92 hp However, the big problem with such a motor is that 21126 bends the valve on the Priora. As a result, the car needs a major overhaul.

The reason for the bent valve in the Lada Priora is the absence of special grooves in the 1.5 engine with 16-valve piston. Because of this, when the belt breaks, the pistons hit the valves, the latter bend. Somewhat later, the Priora began to install 1.6-liter 16-valve engines. The design of these motors practically does not differ from the previous ones with a volume of 1.5 liters. The main difference is that the pistons are notched in the new engine. If the timing belt breaks, the pistons do not meet the valves, and the engine does not bend the valve on the Priora.

A modern motor from AvtoVAZ is presented in the form of a 16-valve unit, which differs from its previous counterparts in its reliability and safety; bent valves are not typical for it. However, the erroneous opinion of most motorists is due to the fact that on the updated Priore the engine bends the valve in rare cases. This is explained by the fact that this car is equipped with a 1.6-liter 16-valve engine. Practice has shown that when the timing belt breaks on the Lada, the pistons bend the valve when they meet. Repair of this type of engine is more expensive than on "12" analogues. The probability of a belt breaking on the Priora is low, since it is almost twice as wide as on "12" motors. When using a defective belt, the question "does the valve on the Priore bend?" will continue to arise.

Valve for motor

Comparing Priora and Kalina engines, auto mechanics claim that the owners of the second car face a similar problem. Therefore, it is recommended to regularly monitor the condition of the timing belt. Some motorists are worried about whether the valve bends if there is a large layer of carbon deposits on the pistons. Similar breakdowns are found in such motors. Therefore, owners of any type of vehicle should regularly monitor the condition of the timing belt, checking it for cracks, chips, threads and delamination. These signs signal that the timing belt needs to be changed immediately. Otherwise, the question "does the engine on the Priora bend the valve?" will not be resolved.

Main reasons

Motor device

Car owners of Lada Priora 21126 are interested in knowing the reasons why the valve bends on their car. Auto mechanics claim that on all modern models of this car, as a result of a break in the timing belt, the valve engine bends. The first engines for front-wheel drive VAZ 2110, in contrast to similar units for rear-wheel drive, had a volume of 1.5 liters. A little later, similar designs with a volume of 1.6 liters appeared. with 8 valves and one camshaft. Some motorists do not know if the valve bends on such engines. This process does not occur because the first elements do not meet with the pistons at the dead center. After evolution, new 16-valve units with two camshafts appeared. This allowed an increase in power from 76 hp. up to 92 hp, while the volume of the engine has not changed.

Experts say that such units are also unreliable, since when the timing belt breaks, valves and pistons meet even at the dead center, as a result, the engine bends the second elements on the Prior. Such repairs are expensive. In addition to replacing the valve, sometimes the pistons have to be replaced.

The designers of AvtoVAZ, having modified the 16-valve engine, first installed it on the new VAZ 2112. The engine received the abbreviation 124. The distinctive features of the new unit from the previous analogs are the presence of an updated piston group. They received "grooves" or the so-called "notches", with the help of which reliable protection against breaking the timing belt is created. VAZ 2112 with this engine is considered a reliable and powerful vehicle.

Features of notched pistons

The 10th family of cars was discontinued due to the presence of many technical flaws. The updated family went through major changes that affected environmental issues and increased engine power. It should be noted that all 16-valve engines are currently installed not only on the Priora, but also on other VAZ models, including Kalina and Granta. However, the engine bends the valve on every such vehicle.

The exception to the fact that when the timing belt breaks, these parts will not meet with the pistons, are the first eight-valve motors. Modern production domestic cars does not provide for the use of these units. New eight-valve counterparts with increased power also bend the valve.

Since 2011, Priora had 8 valve motors marking 21114, which did not bend the valve. In recent years, the valve bends on all manufactured Ladakh Priora, since they have engines with 8 valves marking 21116.

Cautions and Consequences

Valve bending on the Priora is mainly due to the meeting of the piston with the first parts. If the timing belt breaks, expensive repairs to the car owner cannot be avoided. In such a situation, auto mechanics recommend:

• regularly check the condition of the belt,
• determine the presence of chips and cracks on the belt,
• check if there are threads on the belt.

• remove the engine from the car,
• disassemble it,
• drain and replace oil,
• remove the crankshaft,
• remove the pistons,
• remove the connecting rods.

Piston system

In this case, you will also need to buy a new, lighter piston group. From an authorized dealer, it will cost no more than $ 2-5. Some auto mechanics recommend buying a car of another brand, the price of which practically does not differ from the Priora. It can be KIA RIO or Chevrolet Aveo. This problem can be solved with an optimized cooling system for the block and cylinder head.

Frequent breakage of the timing belt is associated with the use of low-quality car parts, including a bypass roller. To prevent such a breakdown, Priora car owners install on their cars a lower gear on a calender, a belt and rollers from a VAZ-2112. This does not change the pump and gears on the camshaft. Washers 5 mm thick are placed under the rollers. The presence of a large number of manufacturers of these parts allows you to choose high-quality and reliable products for cars.

The question is interesting and worries many - is the valve bending on the Lada Grant car when the timing belt breaks ...

Process physics

Let's explain what a timing belt is. The timing belt is a rubber closed belt, with notches on the inside, designed to synchronize the crankshaft and camshaft of the engine. It is used when using a belt drive.

When the timing belt breaks, the camshafts stop in the position in which the breakage occurred, and the crankshaft continues to spin by inertia and the pistons strike with powerful force on the valves, on those that were open at that moment. As a result, the valves bend (see figure). It doesn't matter at all whether this happened in gear or not, and the number of revolutions does not matter.

On the front two, the curvature of the valves is especially visible

Reasons due to which a break occurs

• most often the cause of a timing belt break is a jammed pump
• breakage due to worn-out belt, incl. due to poor quality
• jamming of rollers, camshafts, crankshaft
• etc.

As a result of all these events, the following can be observed:

There are traces of dents on the piston

Is the valve bending on the Grant?

Since different engines are installed on Lada Granta of different configurations (about engines in detail), then the answer to the question above will be different.

On the "standard" trim levels, 1.6-liter 8-valve engines are installed, which are still used on the Lada Kalina. Such engines have already passed the test of time and have shown themselves well in operation - if the timing belt breaks, the valves remain in good condition.

The "norm" configuration has a modernized 8 valve with a lightweight piston group (these are also installed on Kalina). Here the problem of the meeting of pistons and valves when the timing belt breaks has not been resolved. This happens because special recesses are made in the pistons of such engines, and when the ShPG is lightened, the pistons become thinner and there is no room left for the recesses.

Owners of the "luxury" will not be able to please either - their valves, when the belt breaks, also encounters a valve and a piston. True, there are fewer cases of such engines, but there is a risk. The main reason for the breakage on such engines is a jammed pump, tension and support rollers.

The risk is especially great if ...

It is worth not looking at the car, as it itself will make you look at it with a large and costly repair. AvtoVAZ advises to change the timing belt more often, to monitor the condition of the rollers, tensioners, etc., i.e. periodically carry out maintenance. Although the plant gives a guarantee of 120,000 km for the belt, it is a big risk to experience this. It is better to follow it more often, and change it in advance, until you have to spend money on engine overhaul.

In the fall of 2015, the LAD family of cars was supplemented by the top model - the Vesta car, produced in the sedan body. When asking the question "does the valve bend on the Lada Vesta", you need to clearly imagine what kind of engine we are talking about: about a 1.6-liter Russian or Nissan, or maybe about the latest VAZ development with the name "21179".

Here options are considered that are related to cars that are being produced now or those that will begin to be produced in the near future. Also, an 8-valve engine was developed for Vesta - it definitely does not bend the valves and will definitely not be installed on top sedans in 2016.

Read more about the engines that the Lada Vesta line is equipped with in the material: !

ICE VAZ-21129, 106 "forces" (valve bends)

Under the hood of a 106-strong Lada Vesta

A bit of history. Motor 21129 is a modified version of another engine, namely, 21127. The last of them, when the timing belt broke, successfully bent its valves, although grooves were made on the pistons (Fig. 1). The point is that the depth of the grooves was not sufficient: when certain conditions were met, the valve "met" the piston with all the ensuing consequences.

With the transition to a new generation of internal combustion engines, that is, to 21129, the design of the pistons was finalized. But the external shape has not changed much, and although the notches remain, their depth is still insufficient.

Here the question was considered whether the Lada Vesta valve with the "21129" engine is bending. And the answer was unequivocal: yes, oppression.

In theory, the problem with valve bending is typical for all VAZ engines equipped with 4 valves per cylinder. Each new 16-valve "inherits" it. An exception is one rarity - the VAZ-2112 internal combustion engine, the volume of which is 1.6 liters. There the notches are made to the fullest (Fig. 2).

122-horsepower motor "21179" (valve bends)

By its design, the VAZ-21179 internal combustion engine does not differ much from its predecessors. The working volume was increased to 1774 ml, which was achieved by changing the length of the piston stroke: from 75.6 mm to 84.0 mm.

Elements of the connecting rod-piston group

The piston itself is now fitted to the cylinder better than in the 21127 and 21129 engines. The distance from the piston pin to the piston crown has increased by 1.3 mm to 26.7 mm. But deeper grooves in the bottom did not appear. The timing mechanism still drives the belt, and when it breaks, no one canceled the ability to bend the valves.

Now we know if the valves are pressed on the Lada Vesta with a 1.8-liter engine. The answer will be the same as for all 16-valve VAZ internal combustion engines (with the exception of 2112). The problem with the transition to a new generation remains the same. And they do not intend to return to the "heavy" pistons at the VAZ.

The timing drive on 21179 engines is equipped with not one, but two tension rollers. What has been done so that the structure is less susceptible to tension in the timing belt.

It says here: the number of idler rollers is two

One of the automatic tensioning machines can jam, but then the second automatic roller will take over its function.

Pistons that do not bend the valve

Piston kits for some "old" 16-valve valves are available from third parties. These parts are supplied with deep grooves. The point is that the piston does not reach the plates and cannot bend the valves.

Tuning piston for internal combustion engine 21126-21127

ShPG elements of different engines (21127, 21129, 21179) are compatible. But it is not necessary to install pistons from "old engines" into Vesta's engine:

• In the internal combustion engine 21129 after such "tuning" the friction losses will increase;
• If the pistons from the 26th or 27th engine are installed in the ICE 21179, the working volume will immediately change.

"29th", as well as "79th" engine Lada Vesta bends valves only with "VAZ" pistons. But after installing a "tuning" part, do not expect an increase in power. And also, using non-standard elements, you can greatly reduce the resource (lose the warranty, get unforeseen consequences).

Nissan HR16DE engine (not oppression, there is a chain)

This engine is planned to be installed on bodies:, and coupes! Its name is HR16DE, and the working volume is 1.6 liters. Let's take a look at what the piston crown looks like.

Disassembled HR16DE engine

No "deep grooves" are provided here. Now let's pay attention to how the timing mechanism works.

Nothing but gears and chains

There is no toothed belt here - it is replaced by a chain. It is difficult to imagine the following two situations:

• The chain could jump over the teeth of one or more gears;
• One of the elements was damaged so badly that the damage caused it to rupture.

As long as the chain remains intact, valves and pistons cannot meet each other, no matter what happens to the engine. The only bad thing is that the chain can jam.

Is the Lada Vesta valve bending with a Nissan ICE? The answer "no" would be wrong - breaking the circuit is not ruled out. But in reality, it will be almost impossible to face such a situation. Let's see why.

Four well-known facts

The resource indicator for the timing chain always exceeds the engine life. This is the first fact, but the condition must be fulfilled: the oil change must be timely. In general, the chain breaks down gradually, and this is accompanied by symptoms:

• Audible overtones (chirping) at idle;
• At the moment of passing the "problem area", a phase shift may be observed.

The last defect is detected using computer diagnostics.

It takes a certain amount of time from the appearance of any symptom to the complete breaking of the circuit. And in general, a "defective circuit" can work for a long time. This was another, fourth fact.