In the fall of 2015, the Lad family of cars was replenished with 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 understand what kind of engine we are talking about: about a 1.6-liter Russian or Nissan, or maybe about the latest development of the VAZ with the name “21179”.
Here are considered options related to cars produced now or those that will begin to be produced in the near future. Also, an 8-valve engine was developed for Vesta - it certainly does not bend the valves and will definitely not be installed on top-end sedans in 2016.
Read more about the engines that the Lada Vesta line is equipped with in the material: !
ICE VAZ-21129, 106 "forces" (pressure valve)
Under the hood of a 106-horsepower 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: under certain conditions, the valve “met” with 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 form has not changed much, and although the recesses remain, their depth is still insufficient.
Here the question was considered whether the Lada Vesta valves with the 21129 engine bend. 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 recesses are made to last (Fig. 2).
122-horsepower engine "21179" (valve oppression)
In terms of 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 piston stroke length: it was 75.6 mm, it became 84.0 mm.
Elements of the connecting rod and piston group
The piston itself now fits the cylinder better than in the 21127 and 21129 engines. The distance from the piston pin to the bottom of the pistons 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 possibility of bending the valves.
Now we know if the valves on the Lada Vesta with a 1.8-liter engine bend. 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 engines 21179 is equipped with not one, but two tension rollers. What is done then, so that the design is less susceptible to stretching of the timing belt.
It says here: the number of tension rollers is two
One of the automatic tensioners may jam, but then its function will be taken over by the second automatic roller.
Pistons that don't bend valves
Piston kits for some "old" 16-valve units are produced by third-party companies. 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 ICE 21126-21127
ShPG elements of different engines (21127, 21129, 21179) are compatible. But you do not need to install pistons from "old engines" in Vesta's motor:
- In ICE 21129, after such “tuning”, friction losses will increase;
- If the pistons from the 26th or 27th engine are installed in the internal combustion engine 21179, the working volume will immediately change.
The "29th", as well as the "79th" Lada Vesta engine bends the valve only with "VAZ" pistons. But having installed a "tuning" part, do not expect an increase in power. And yet, using non-standard elements, you can greatly reduce the resource (lose the guarantee, get unforeseen consequences).
Nissan HR16DE engine (does not bend, there is a chain)
Disassembled HR16DE engine
There are no "deep grooves" here. Now let's pay attention to how the timing mechanism is arranged.
Nothing but gears and chains
There is no toothed belt here - a chain replaces it. 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 presence of damage led to a rupture.
As long as the chain remains intact, the valves and pistons cannot meet each other, no matter what happens to the engine. The only bad thing is that the chain can jam.
Does the Lada Vesta valve bend with a Nissan ICE? The answer "no" would be incorrect - a chain break 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 life indicator for the timing chain always exceeds the life of the engine. This is the first fact, but the condition must be met: the oil change must be timely. In general, the circuit fails gradually, and this is accompanied by symptoms:
- Audible overtones (chirring) at idle;
- At the moment of passing the “problem area”, a phase shift can be observed.
The last defect is detected using computer diagnostics.
From the appearance of any symptom to a complete break in the chain, a certain time passes. And in general, a “defective circuit” can work for a long time. This was another, fourth fact.
The consequences of a broken timing belt, an example in the video
Of course, for many experienced car owners, the question of whether the valve bends on the Priore has long been studied. But there are many newcomers among drivers who do not have information about this. It is for such motorists that this post will be written.
It is worth noting that several engine modifications were installed on Lada Priora cars. And of course, the answer to the question about bent valves will depend on what powertrain is installed on your car.
On which Priory engines does the valve bend?
- VAZ 21126 is a classic prior engine, which was the first on these machines. Due to changes in the design, namely, the lightening of the connecting rod and piston group, there was no room left for valve recesses in the pistons. As a result, when the timing belt breaks, which sometimes happens on the Prior, the valves are bent, and sometimes even the pistons are damaged.
- The VAZ 21116 engine is a simpler 8-valve engine that Priore got from Grants. In appearance, it is practically no different from a conventional 8-valve injector, but inside, again, lightweight pistons, which leads to already familiar consequences in the event of a timing belt break - valve bending. But it is worth noting that the load on the timing of 8-valve engines is slightly lower than that of 16-cell engines, and such problems are less common on such power units.
- VAZ 21127 is an improved 126 engine that develops not 98, but as much as 106 hp. Of course, here, too, the valves bend when they meet with the pistons, because by increasing the power, it was impossible to increase the pistons at the same time in order to make the necessary recesses. In fact, the piston remained the same, and the changes affected only the intake receiver.
On which engines does the valve not bend when the timing belt breaks?
It so happened that only one engine was available for Priora, which did not suffer from a problem with valve bending. This is model 21114, which was mainly installed only on the “standard” package, that is, the cheapest versions. But in recent years it is simply impossible to find Priora with such engines, since this reliable unit was replaced by the 116th from Grants.
In general, everything leads to the fact that the piston group is constantly lightened, refined, making the engines more powerful and at the same time economical. And of course, this happens to the detriment of the reliability and reliability of the motor when the timing belt breaks. Well, to make sure that the valve bends on the Priore, you can watch a special video review below, which even shows an example with a belt that simply jumped a few teeth.
As you can see, even when the belt jumped a few teeth, all the intake valves were already bent. I think that the answer to questions on this topic has been received, and if you have something to add on the merits, you can unsubscribe below in the comments.
Valves are an integral part of the gas distribution mechanism of the vehicle. It should be noted that these devices are quite important, since it is they that ensure the release of exhaust gases, create compression during ignition and injection of fuel in the engine cylinders. Modern engines provide different options for their installations.
1. How valves work
Valves are a fairly simple device, so the principle of their operation will not be difficult even for a beginner. They are driven by a camshaft located at the top of the block head. With this device, the valves open and close. The camshaft spins up and presses the valve with special ovals, which eventually opens. When the shaft stops pressing, the valve closes. The camshaft runs on a chain or belt drive, which is guided by the operation of the car's crankshaft.
The crankshaft and camshaft go through a mandatory stage of synchronization. This is done so that the movement of the piston and the opening of the valves coincide in the same sequence: when the piston goes down, the valves open, and when the piston rises, the valves close. Thus, pressure is created in the combustion chamber. After that, the air-fuel mixture is ignited, and the piston, under the influence of pressure, goes down. This cycle is repeated many times.
2. The reason why the valves are bent
It is important to note that the situation when the valves are bent does not depend on how many valves there are in the engine. The cause of the malfunction is quite simple: an open circuit or timing belt occurs. The chain itself breaks quite rarely, since in most cases it stretches, and the hook sprockets simply jump.
The camshaft will stop abruptly when a break occurs. the same will continue to push the pistons. Thus, those valves that burn in the combustion chamber and those pistons that go up will meet at the top point, and pistons with enough energy will break and bend the valves. Eliminating this breakdown will be quite expensive, since it will be necessary to pull out all the bent elements from the motor. In addition, the block head itself may suffer, in which case it will be necessary to replace it.
3. Why the belt breaks, and how to protect yourself from it
The most common cause is a simple non-compliance with the instructions in accordance with the replacement of the belt from the manufacturer of the device. Often, when the vehicle is under warranty, the replacement will be successful, but when a motorist wants to independently ensure the performance of his car, big trouble can arise if you save on replacing this device.
The pump may also fail. Some car models provide for the engagement of the device in the belt, and when it fails, the system simply jams, as a result of which the belt is worn out in a matter of hours. A poor-quality belt is also the root cause of a malfunction. That is why it is necessary to take high-quality, albeit expensive parts. The camshaft may also become unusable. If it is made of metal, you can immediately say that such an element will be faulty after a certain period of time, which, of course, is almost impossible to predict. Plus, the tension rollers of the gas distribution system can also fail. They simply fall off or jam, as a result of which the belt comes off or breaks, and the valves bend.
There is only one way to avoid this. You simply need to follow the instructions and change the belt, tension rollers and other elements of this system in time, which manufacturers prescribe according to the regulations. All parts must be purchased only in high-quality automotive stores and services that are official dealers.
4. Are there valves that cannot bend?
Such options exist in the modern automotive world, but they are very rare. Previously, there were domestic devices that did not know such a disaster before. Unfortunately, there are practically none now. However, you can resort to solving the problem by tuning powertrains. The gist is quite simple: instead of conventional pistons, options with notches on top are installed. The method is quite effective, since in the event of a break, the valves will fall into these holes, and a breakdown will be prevented. The motorist only needs to install a new belt, as well as synchronize the camshaft and crankshaft of the car.
However, this method is not always effective. The thing is that such pistons will contribute to the loss of part of the power of the internal combustion engine, because such a piston will be heavier than an ordinary piston, which will affect the compression force. That is why not all motorists recognize and resort to using this method.
5. How to know if the valves on the engine are bent
Many motorists are wondering how to tell a bent valve from a non-bending valve, or how to tell if a valve is working. Unfortunately, there is no answer to this question, since valves are not subject to visual identification of a malfunction. Nowhere are there any mentions and inscriptions, notes that would lead to the comprehended truth. Of course, you can stop by the official workshop, where the masters will check the equipment, which, of course, will be quite expensive. It is advisable to do diagnostics of your vehicle every 20-30 thousand kilometers, where the inoperability of such elements will be determined.
The operation of the valve mechanism is as follows: at the moment the piston reaches top dead center, both valves in the combustion chamber close - a certain pressure is created in it. Belt break leads to the fact that valve do not have time to close in time before the arrival of the piston. Thus, their meeting occurs - a collision, which directly leads to the fact that the valve bends. Previously, in order to prevent such a problem, special valve grooves were made on older engines. Similar recesses are also found on new generation engines, but they are intended only to avoid deformation of the valves during engine operation, and if a belt breaks, they absolutely do not save.
From a physical point of view, from the moment the timing belt breaks, the camshafts immediately stop, under the action of return springs that slow down its cams. At this moment, the crankshaft inertially continues its rotational movement (regardless of whether the gear was engaged or not, the revolutions were low or high, the flywheel continues to turn it). That is, the pistons continue to work, and as a result, they hit the currently open valves. Quite rare, but it happens when the valves damage the piston itself.
Causes of a broken timing belt
- belt wear as such or its poor quality (shaft gears have sharp edges or oil from oil seals).
- wedge crankshaft.
- wedge pump (the most common occurrence).
- several or one camshaft wedges (for example, due to the deterioration of one of them - however, the consequences are slightly different here).
- the tensioning roller is unscrewed or the rollers are wedged (there is a weakening or constriction of the belt).
Modern engines, since they are more powerful than their predecessors, have much less survivability. If we consider the cause, relying on the valves, this problem arises due to the small distance between them and the piston. That is, if at the moment the piston arrives, the valve is ajar, then it instantly bends. Since for greater compression and compression in the bottom of the piston there is no groove under the valve of the required depth.
What engines have valve bending?
On machines with an 8-valve engine, it bends the least, but 16 and 20 cells, be it gasoline or diesel, the bend occurs in most cases. True, sometimes it can be one or more valves, and if the engine was idling, then the trouble will carry over. But such cases are few, mostly, the consequences are irreversible. A table with a list of engines on which the valves of all popular cars bend when the timing belt breaks.
| Engine | Oppression | Engine | Not oppression | |
| 1C | oppression | Camry V10 2.2GL | do not oppress | |
| 2C | oppression | 3VZ | do not oppress | |
| 2E | oppression | 1S | do not oppress | |
| 3S-GE | oppression | 2S | do not oppress | |
| 3S-GTE | oppression | 3S-FE | do not oppress | |
| 3S-FSE | oppression | 4S-FE | do not oppress | |
| 4A-GE | oppression (not oppressive at idle) | 5S-FE | do not oppress | |
| 1G-FE VVT-i | oppression | 4A-FHE | do not oppress | |
| G-FE Beams | oppression | 1G-EU | do not oppress | |
| 1JZ-FSE | oppression | 3A | do not oppress | |
| 2JZ-FSE | oppression | 1JZ-GE | do not oppress | |
| 1MZ-FE VVT-i | oppression | 2JZ-GE | do not oppress | |
| 2MZ-FE VVT-i | oppression | 5A-FE | do not oppress | |
| 3MZ-FE VVT-i | oppression | 4A-FE | do not oppress | |
| 1VZ-FE | oppression | 4A-FE LB | ||
| 2VZ-FE | oppression | 7A-FE | ||
| 3VZ-FE | oppression | 7A-FE LB | no oppression (working on a lean mixture (lean burn)) | |
| 4VZ-FE | oppression | 4E-FE | do not oppress | |
| 5VZ-FE | oppression | 4E-FTE | do not oppress | |
| 1SZ-FE | oppression | 5E-FE | do not oppress | |
| 2SZ-FE | oppression | 5E-FHE | do not oppress | |
| 1G-FE | do not oppress | |||
| 1G-GZE | do not oppress | |||
| 1JZ-GE | ||||
| 1JZ-GTE | do not oppress | |||
| 2JZ-GE | does not oppress (in practice it is possible) | |||
| 2JZ-GTE | do not oppress | |||
| 1MZ-FE type"95 | do not oppress | |||
| 3VZ-E | do not oppress |
| Engine | Oppression | Engine | Not oppression | |
| 2111 1.5 16cl. | oppression | 2111 1.5 8cl. | do not oppress | |
| 2103 | oppression | 21083 1.5 | do not oppress | |
| 2106 | oppression | 21093, 2111, 1.5 | do not oppress | |
| 21091 1.1 | oppression | 21124, 1.6 | do not oppress | |
| 20124 1.5 16v | oppression | 2113, 2005 onwards 1.5 engineer, 8 cells | do not oppress | |
| 2112, 16 valves, 1.5 | oppression (with stock pistons) | 11183 1.6 l 8 cells "Standard" (Lada Granta) | do not oppress | |
| 21126, 1.6 | oppression | 2114 1.5, 1.6 8 cells | do not oppress | |
| 21128, 1.8 | oppression | 21124 1.6 16 cells | do not oppress | |
| Lada Kalina Sport 1.6 72kW | oppression | |||
| 21116 16 cells. "Norma" (Lada Granta) | oppression | |||
| 2114 1.3 8 cells and 1.5 16 cells | oppression | |||
| Lada Largus K7M 710 1.6l. 8 cells and K4M 697 1.6 16 cl. | oppression | |||
| Niva 1.7l. | oppression |
Mitsubishi
VAG (Audi, VW, Skoda)
| Engine | Oppression | Engine | Not oppression | |
| ADP 1.6 | oppression | 1.8RP | do not oppress | |
| Polo 2005 1.4 | oppression | 1.8 AAM | do not oppress | |
| Conveyor T4 ABL 1.9 l | oppression | 1.8PF | do not oppress | |
| GOLF 4 1.4/16V AHW | oppression | 1.6 EZ | do not oppress | |
| PASSAT 1.8 l. 20V | oppression | 2.0 2E | do not oppress | |
| Passat B6 BVY 2.0FSI | oppression + breaks valve guides | 1.8PL | do not oppress | |
| 1.4 ICA | oppression | 1.8 AGU | do not oppress | |
| 1.4BUD | oppression | 1.8EV | do not oppress | |
| 2.8 AAA | oppression | 1.8 ABS | do not oppress | |
| 2.0 9A | oppression | 2.0JS | do not oppress | |
| 1.9 1Z | oppression | |||
| 1.8KR | oppression | |||
| 1.4BBZ | oppression | |||
| 1.4ABD | oppression | |||
| 1.4 ICA | oppression | |||
| 1.3 MN | oppression | |||
| 1.3HK | oppression | |||
| 1.4.AKQ | oppression | |||
| 1.6 ABU | oppression | |||
| 1.3 N.Z. | oppression | |||
| 1.6 B.F.Q. | oppression | |||
| 1.6CS | oppression | |||
| 1.6 AEE | oppression | |||
| 1.6 AKL | oppression | |||
| 1.6AFT | oppression | |||
| 1.8AWT | oppression | |||
| 2.0 BPY | oppression |
| Engine | Oppression | Engine | Not oppression | |
| X14NV | oppression | 13S | do not oppress | |
| X14NZ | oppression | 13N/NB | do not oppress | |
| C14NZ | oppression | 16SH | do not oppress | |
| X14XE | oppression | C16NZ | do not oppress | |
| X14SZ | oppression | 16SV | do not oppress | |
| C14SE | oppression | X16SZ | do not oppress | |
| X16NE | oppression | X16SZR | do not oppress | |
| X16XE | oppression | 18E | do not oppress | |
| X16XEL | oppression | C18NZ | do not oppress | |
| C16SE | oppression | 18SEH | do not oppress | |
| Z16XER | oppression | 20SEH | do not oppress | |
| C18XE | oppression | C20NE | do not oppress | |
| C18XEL | oppression | X20SE | do not oppress | |
| C18XER | oppression | Cadet 1.3 1.6 1.8 2.0 l. 8 cells | do not oppress | |
| C20XE | oppression | 1.6 if 8 cells. | do not oppress | |
| C20LET | oppression | |||
| X20XEV | oppression | |||
| Z20LEL | oppression | |||
| Z20LER | oppression | |||
| Z20LEH | oppression | |||
| X22XE | oppression | |||
| C25XE | oppression | |||
| X25X | oppression | |||
| Y26SE | oppression | |||
| X30XE | oppression | |||
| Y32SE | oppression | |||
| Corsa 1.2 8v | oppression | |||
| Cadet 1.4 L | oppression | |||
| all 1.4, 1.6 16V | oppression |
How do you know if a valve is bent?
Checking the engine threatens to bend the valves after a broken timing
In this matter, neither a visual inspection nor the numbers given in the "valve bend" tables will help you. Even if you have in your hands information from the manufacturer about damage in the event of a broken belt, it is not known how reliable it is.
If you want to check for the possibility of bending the valves by the piston when the timing belt breaks, you must remove the belt, set the first piston at TDC, turn the camshaft 720 degrees.
If everything went well and he did not rest, you can continue to check - go to the second piston. When everything is fine there, then a possible broken belt will not lead to negative consequences for the engine of your car.
In order to avoid this problem (bend of valves in the event of a break), it is necessary to constantly monitor the condition and tension of the timing belt. When the slightest unfamiliar noise appears during operation, it is immediately necessary to try to find out the cause of its occurrence, inspect the condition of the rollers and the pump.
When buying a used car, do it right away no matter what the seller tells you. And then such an urgent question as does the valve bend when it breaks You will not be disturbed.
Bent valve signs
When the belt broke, then simply changing the timing belt, hoping that everything went without consequences and you start the engine, is not worth it. Especially if the engine is on the list of those on which the valve bends. Yes, there are times when the bend was not large and several valves no longer fit snugly in the saddle, then you can turn the starter, but often such actions will aggravate the situation even more. Since with minor damage everything will work and spin, however, the engine will shake, and the consequences will only worsen.
It is best if you remove the "head" to check it visually or pour kerosene, however, there are several ways to check if the valve is bent without disassembling the engine.
The main symptom if the valves are bent - small or completely no compression. Therefore, it is necessary in the cylinders. But, such actions are relevant if the crankshaft can be turned and nothing rests anywhere. So the first thing to do is to install a new belt, manually, by the bolt on the HF, scroll the entire gas distribution mechanism a few turns (you need to unscrew the candles at the same time).
How to check if a valve is bent
To determine whether any valve stem has bent, literally five turns of manual turning with a wrench on the crankshaft bolt will be enough. If the rods are intact, then the rotation will be free, bent - heavy. And there should also be clearly tangible 4 points (at one revolution) of resistance to the movement of the pistons. If such resistance is imperceptible, then screwing the candles back, unscrew them one by one and turn the crankshaft again.
By the force of manual torsion, with one of the candles missing, it is relatively easy to understand in which particular cylinder the valve(s) were bent. However, this method will not always be able to help you accurately find out if the valve is bent or not.
If the crankshaft turns freely, then you can check with a compression gauge. Is there no such tool? Means do a pneumotest, moreover, checking the tightness of the cylinders is the most correct way, which will give an answer on how the valve plates fit in the saddles, without additional consequences when scrolling with the starter and without installing a new belt.
How to check if the valve itself is bent?
For a pneumatic test, it is unnecessary to pull the car to the service station, you yourself can find out whether the cylinder is tight or not. Easiest:
- pick up a piece of hose according to the diameter of the candle well;
- unscrew the candle;
- set the cylinder piston to top dead center (valves closed) one by one;
- insert the hose tightly into the well;
- you try with all your might to blow into the combustion chamber (air passes - bent, does not pass - “swept through”).
The same test can be done using a compressor (even a car). True, you will have to spend a little more time, as you need to prepare. Drill out the central electrode in the old candle, and put a hose on the ceramic tip (fixing it well with a clamp). Then pump pressure into the cylinder (provided that the piston in it is at TDC).
By hissing and by pressure on the pressure gauge, it will be clear whether the valve hats are sitting in the saddles or not. Moreover, depending on where the air goes, determine the inlet or outlet bent. When the exhaust is bent, air goes into the exhaust manifold (silencer). If the intake valves are bent, then into the intake tract.
A rather topical question, on which VAZ engines the valve does not bend, will probably be of interest to every owner of a car from a legendary domestic manufacturer - old or new - without much difference. The fear of a broken belt for some drivers even turns into a kind of paranoia: they begin to carry a spare belt with them, study the condition of the worker at every opportunity, consult with all friends and acquaintances who have at least something to do with the auto business. But can such actions always lead to the planned result?
On which VAZ engines the valve does not bend, you need to know for sure, and this data will strengthen your understanding: will it be necessary to repair, in addition to replacing the belt when it breaks, also the engine? After all, this procedure can take a lot of effort and, most importantly, money.
A bit of history
It is not difficult to remember engine modifications on models. But everything is in order! The first were 8-valve engines (1.5 and 1.6 liters). They did not bend the valve. And all - for a simple reason: the pistons in the intended design did not occur in the event of an incident with valves.
The developers got around the potential problem quite well, credit to them for this and praise (how many this feature saved from unplanned and rather expensive repairs)! A little later, at that time a new motor.With all the improvements and increase in horsepower up to 92(since 76), which was a clear plus, this motor also had some, not immediately noticeable drawbacks. The design of the mechanism has been changed thanks to a new head (16 valves). And as a bonus - the meeting of the pistons with the valves in the event of a timing break (at the most inopportune moment, as a rule)!
As a result- the valves were bent on this model unambiguously. And the car owner was expecting a fairly expensive repair, costing a pretty penny. The reason, in addition to a broken belt, is simple - the very design of a 1.5-liter engine with 16 valves: the pistons do not have special sub-valve recesses and, as a result, hit the valves hard. There is a bend in these parts, popularly called: the valve is bent.
Fixing bugs: But a few years have passed, and the designers have revised their concept. At 2112, they began to mount new engines of 1.6-liter volume, also 16-valve. In these modifications, little has changed from the previous ones, but there were recesses for valves on the pistons, which made it possible to avoid meeting these parts when the belt breaks, and hence costly repairs.
All repeats
Not so many years have passed yet, the happy owners of these VAZ models have already begun to get used to the good. Moreover, when the belts break, the valves on the engine do not bend, injuring it from the inside. But it was not there! The domestic auto industry does not allow to relax even for a minute. Priora appears on the horizon (updated ten), a seemingly modern machine, quite decent for many. Engine - 1.6 liters, 16 valves. Motorists thought that such annoying flaws would not happen to him.
However, as practice has shown, when the belt breaks on the Prior, the valves still bend (that is, they also meet the pistons, as on the very original 16-valve mechanisms). And who, one wonders, needs this: an additional repair at the present time, costing a pretty penny? After all, the repair of the Priorov engine will cost even more than the usual dozen.
One thing pleases, the probability of such a flaw is nevertheless minimized by the designers: the belt is much wider and it breaks not so often. But sometimes it breaks! Or, for example, a defective spare part may come across, and the likelihood of a rush will increase significantly. What to do then? You will have to repair the engine already, and not just put a new belt. Because it is not possible to predict when this can happen with hidden defects.
It remains only to make a wish so that this breakdown does not occur somewhere in an open field, where cars do not pass often, but in a city with the ability to tow your car.
By the way, to Kalina they also install engines similar in methods of destructive action on valves, only 1.4 liters (16-valve). So, as they say, be vigilant and know: on which VAZ engines the valve does not bend, and on which it does! There you will already have to constantly monitor and check the condition of the belt and take preventive actions to prevent timing gusts.
