Replacing the cylinder head gasket on a VAZ 2107. How to replace the cylinder head gasket on a VAZ 2107 yourself

What is the function of the cylinder head gasket?

The cylinder head gasket is located between the cylinder head and the cylinders and performs several functions:

seals the place where the head adheres to the cylinder block;
prevents oil from leaking and coolant from entering the cylinders;
Restrains internal pressure and heat.

Thus, it separates three systems: gas distribution, cooling and lubrication. Experiencing heavy loads, it wears out quickly.

Gasket with traces of breakdowns

The following are signs that may indicate the need for replacement:

insufficient pressure in one or more cylinders;
foaming of the coolant, a drop in its level in the absence of an external leak, occurs due to gases entering the cooling system;
emulsion on the oil dipstick, an increase in the oil level in the pan, the reason for this is the presence of antifreeze in the lubrication system;
the appearance of oil stains on the surface of the coolant and the radiator neck indicates a broken gasket in the area of the oil channel;
white smoke in the exhaust gases, while the coolant level drops;
squeezing out the coolant fluid from the expansion tank in the form of foam indicates a violation of the tightness of one of the cylinders;
The coolant level drops and the engine boils.

The video describes the signs of gasket burnout.

Damage to the gasket may be caused by:

low-quality consumables;
overheating of the power unit;
improper tightening of cylinder head bolts;
insufficient coolant level;
Incorrect installation of the cylinder head.

Removing the cylinder head of a VAZ 2107

Now is the time to remove the timing chain. To do this, loosen the tensioner, or even better, remove it completely. Only after this can you unscrew the bolt that secures the sprocket to the camshaft. But don't forget to straighten the washer before you start unscrewing it.

To prevent the chain from falling, it must be held with a soft wire. Next comes the turn of the camshaft. It is secured to the cylinder head with nine nuts. The shaft is very easy to remove, there will be no problems with it. Then you need to get rid of the exhaust pipe and unscrew the exhaust manifold mounting nuts.

That's it, the withdrawal is almost complete. There are 11 bolts left that secure the head to the block. To unscrew them, you will need to use a socket wrench with a long handle. A dynamometer is not suitable for such purposes.

When should you change?

Note that replacing the cylinder head gasket on a VAZ 2101-2107 is rarely done with your own hands. The manufacturer does not regulate the period for its replacement, since the part is installed for its entire service life. However, there are times when it burns out.

How to determine this malfunction? The first sign is engine overheating. The second is a leak at the junction of the block and the head. Both antifreeze and oil can escape from here. Also, these two fluids are mixed in the expansion tank. When the engine is running, there are small gas bubbles in the engine. All these signs indicate that the car needs to replace the head gasket. VAZ "Classic" is a simple car to use. Therefore, you can do this procedure yourself.

Need for replacement

There are few reasons for replacement and some of them require immediate intervention, while others not so much, that is, the vehicle can be used, albeit in a gentle manner.

Reasons for replacement:

Damage to the gasket in the area of the cooling system channel and the drainage channel of the lubrication system. When this happens, the coolant ends up in the oil pan and mixes with the lubricant. The result is a mixture with a brownish tint. This can be detected by checking the lubricant level in the power unit on the dipstick. This malfunction is also indicated by a decrease in the coolant level in the radiator. If you do not intervene in time, the consequences can be catastrophic, including the destruction of the power unit.
Damage to the gasket in the area of the cooling system channel and cylinder. This may occur due to a poor quality gasket or an incorrectly installed head.
Burnout in the cylinder area. This malfunction is detected and diagnosed by a decrease in compression in the cylinders and unstable engine operation.

Burnout between cylinders
Destruction of the gasket. If coolant begins to leak through the gasket and all efforts to tighten the cylinder head do not bring any results, then an urgent replacement is necessary.

Disassembly

So, where does the replacement of the cylinder head gasket begin on a VAZ-2107 car? First, remove the air filter with a round metal housing (shown in the photo below).

Next, unscrew and take out the carburetor. After this, they begin to dismantle other attachments. This is the ignition distributor and high-voltage wires. After this, the coolant is drained from the engine. It is required to prepare a clean container with a volume of at least 7 liters.

Video “Replacing a burnt gasket on classic Lada models”

In this video, an experienced master will clearly show and explain in detail how to correctly change the cylinder head gasket on classic Lada models. On a VAZ 2107 with an injection and carburetor engine, all work is carried out according to the same scheme.

Replacing the cylinder head gasket of a VAZ 2107 on an injection engine is carried out in the event of its breakdown when coolant begins to flow into the cylinders. To carry out repairs, it is necessary to drain the coolant from the unit by unscrewing the drain plug in its lower part.

The order of dismantling work is as follows:

After draining the coolant, remove the battery from the car.
Disconnect the power wire from the temperature indicator sensor. The sensor is screwed into the block head.
We remove the exhaust pipe. To do this, unscrew the nuts securing it to the intake manifold studs.
Now you need to remove the upper housing assembly with the camshaft. Before removing it, it is necessary to set the piston of the fourth cylinder to the TDC position. We remove the upper housing, and then tie the camshaft drive chain with wire so that it does not fall through.
Remove the starter heat shield by unscrewing the nut securing it.
We disconnect the ground wire from the intake manifold stud, and then remove all the pads with wires from all sensors. Disconnect the wiring harness from the idle speed sensor and the wiring harness from the fuel injectors.
Disconnect the throttle valve drive cable and remove it. Unscrew the nuts securing the bracket and move it to the side. Disconnect the coolant drain hose from the throttle body.

At the next repair step, we need to remove the thermostat bypass pipe and the radiator inlet pipe. Next, remove the car interior heating hose from the pipe.
Disconnect the fuel supply pipes from the fuel rail.
Remove the vacuum hose from the receiver pipe.

Now that all the attachments have been removed from the cylinder head, you can unscrew the bolts securing it to the block. To do this, unscrew ten internal bolts with a socket wrench and one outer bolt with a thirteen key. After unscrewing the bolts, you can remove the cylinder head and gasket.

Replace the gasket with a new one and install it back on the cylinder block, having first passed the camshaft drive chain through the opening. Before installing the block head, measure the length of the bolts using a caliper; their length should not exceed 11.5 cm; if exceeded, replace the bolts with new ones. At this point, the repair work on removing and replacing the cylinder head gasket of the VAZ 2107 is completed.

Drain antifreeze correctly

On a VAZ-2107 car, replacing the cylinder head gasket is relatively quick. However, most of the operation will be draining the old antifreeze. The fact is that the “classic” does not have the familiar drain tap. There is a “traffic jam” here. How to perform this procedure correctly? So, we need a container and a meter of rubber hose with a diameter of at least 1 centimeter. We bring one end of it to the drain plug. With the other side, quickly press the hose against the hole. So the antifreeze will pour into our container. You need to be careful not to spill antifreeze on your hands.

Stages of work

To replace the cylinder head gasket on a VAZ 2107 you will need a standard set of tools and a torque wrench.

Replacement on an injection engine

Drain the coolant.
We remove the battery.
Disconnect the temperature sensor wire.
After unscrewing the fastening nuts, remove the exhaust pipe.
Having previously set the piston of the 4th valve to the top dead center position, we remove the upper housing along with the camshaft.
We remove the starter thermal protection shield by first unscrewing the nut.
Disconnect all wires and sensor connectors.
Disconnect the throttle cable.
We remove the bypass pipe.
We remove the radiator pipe.
We disconnect the tubes through which fuel is supplied.
Remove the hose from the receiver pipe.
Unscrew the bolts that secure the cylinder head. There are thirteen bolts in total.
We remove the cylinder head.
We change the gasket.
We put the cylinder head in place.
The cylinder head bolts on a VAZ 2107 engine with an injector are tightened in a strictly defined sequence using a torque wrench.

Bolt tightening sequence
We connect all the removed elements.

Replacing the cylinder head gasket on a carburetor engine

Drain the coolant by first unscrewing the drain plug.
We remove the battery.
Disconnect the coolant temperature sensor wire.
We dismantle the carburetor air-cleaning barrier housing.
Use a clean rag to cover the carburetor chambers.
We turn off the throttle levers.
Remove the air damper cable.
Remove the ignition air corrector hose.
We remove the blocks with wires from the solenoid valve.
Remove the fuel supply hose.
We dismantle the EPHH hose.
We remove the camshaft housing along with the shaft from the cylinder head.
Remove the valve levers with springs.
We unscrew the candles.
We dismantle the distributor.
Remove the starter thermal protection shield.
Remove the ground wire.
Disconnect the brake booster and economizer hose.
We remove the cooling system pipes.
After unscrewing the block bolts, remove the cylinder head.
We remove the old one.
We install a new one.

Installing a new
We tighten the cylinder head bolts in a strictly defined sequence using a torque wrench.

Tightening with a torque wrench
We reinstall the head and all previously removed equipment.

What's next?

How to further replace the cylinder head gasket of a VAZ-2107? The next step is to remove the valve cover. It is secured with 8 bolts. It is important not to lose the pressure washers - they will be useful to us during assembly. The next step requires removing the timing element, namely the chain drive and gear. To do this, loosen the tensioner and use a wrench to release the locknut. The chain should now loosen. Now let's disassemble the gear.

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It is attached to the camshaft on a lock washer. Using a screwdriver and hammer, bend the stopper and unscrew the element outward. By the way, the chain does not have to be completely removed. The main thing is that it does not fall down. To do this, it is tied with a handy tool (for example, wire).

How to replace the cylinder head gasket next? The VAZ-2107 continues to stand still, and we move on to dismantling the camshaft. To do this, unscrew the 9 mounting bolts. Then we disconnect the exhaust pipe that goes to the exhaust manifold. It is installed on 4 brass nuts. If your pipe is screwed onto ordinary steel pipes, there is a risk of tearing off the pin. Be extremely careful. If there is rust or dirty deposits, use universal lubricant VD-40.

Replacement of cylinder head gasket VAZ 2114(2115)

On VAZ models 2113-14-15, injection 8-valve engines are mainly installed, so replacing the cylinder head gasket of a VAZ 2114 (2115) is slightly different from replacing the cylinder head gasket on a “nine”.

Unlike 2109 on the “fourteenth” and “fifteenth” models:

the air filter housing is removed differently, and along with it you also need to disconnect the injector corrugation (pipe) and the plug from the air flow sensor;
otherwise the fuel hoses are disconnected;
there is no distributor on the engine, but the pipe goes behind the cylinder head;
it will be necessary to remove the high-voltage wires, and it is better to remember their installation order (sometimes they are not numbered);

What to consider when choosing a new product

In order for the gasket to perform its functions, it must be resistant to elevated temperatures and have the ability to compress. These properties depend on the material of manufacture. There are several options for making gaskets: from asbestos, paronite, metal and their combinations.

Combined options, layers of which are made of different materials, combine several properties. Gaskets made of asbestos and metal alloys have increased resistance to high temperatures, but do not strengthen the seal between the head and the cylinder block. Products made of paronite and rubber provide high-quality sealing, but their limit for high temperatures is lower. When choosing a gasket, preference should be given to products of a combined type.

In order not to make a mistake when choosing a seal, it is necessary to take into account the characteristics of the power unit that is installed on the car. The VAZ 2107 can be equipped with one of three types of engines. They differ in cylinder diameter. The power unit 2103 has a diameter of 76 mm, while the 2105 and 2106 have a diameter of 79 mm. If you install a gasket of the wrong diameter, the edges of the seal will be damaged. Naturally, the seal will be broken.

Installing and removing the cylinder head of VAZ 2107, VAZ 2105, VAZ 2104, Lada Zhiguli, Classic

The cylinder head is removed from the engine of the car if, to eliminate the malfunction, it is not necessary to remove the VAZ 2105 engine itself or if it is only necessary to remove carbon deposits from the surfaces of the combustion chamber and valves. The cylinder head must be removed from the engine in the following order:

— drain the coolant from the radiator and cylinder block and remove the air filter; — disconnect the wires from the battery, spark plugs and from the coolant temperature gauge sensor; disconnect the choke cable from the carburetor; — using wrench 67.7812.9514, remove the spark plugs and coolant temperature sensor; — disconnect the throttle drive rods from the intermediate lever on the cylinder head cover of VAZ 2107, VAZ 2105, VAZ 2104 and remove the cover;

Checking the alignment of the installation mark on the camshaft sprocket with the mark on the bearing housing: 1 — mark on the sprocket; 2 - mark on the bearing housing

Ignition distributor 0.3706: 1 — ignition distributor shaft; 2 — wire for supplying current to the ignition distributor; 3 — cover fastening latch; 4 — vacuum regulator housing; 5 - diaphragm; 6 — vacuum regulator cover; 7 — vacuum regulator rod; 8 — pipe for the vacuum hose from the carburetor; 9 — lubricating wick (filt) of the cam; 10 — support (driven) plate of the ignition timing regulator; 11 — ignition distributor rotor; 12 — side electrode with a terminal for the wire to the spark plug; 13 — ignition distributor cover; 14 — central terminal for the wire from the ignition coil; 15 — central carbon electrode with a spring; 16 — central contact of the rotor; 17 - resistor for suppressing radio interference; 18 — external contact of the rotor; 19 — driving plate of the centrifugal regulator; 20 — weight of the centrifugal ignition timing regulator; 21 — lever axis; 22 — breaker cam; 23 — breaker lever; 24 — stand with breaker contacts; 25 — breaker contacts; 26 — movable breaker plate; 27 - capacitor; 28 — ignition distributor housing; 29 — roller oil deflector clutch; 30 — bearing locking plate; 31 — bearing of the movable plate of the breaker; 32 — oiler body; 33 — screws for fastening the rack with breaker contacts; 34 — terminal clamp screw; a — groove for distinguishing ignition distributors 30.3706; b - groove for moving the stand with contacts Fig. 8–22. Ignition distributor 0.3706: 1 — ignition distributor shaft; 2 — wire for supplying current to the ignition distributor; 3 — cover fastening latch; 4 — vacuum regulator housing; 5 - diaphragm; 6 — vacuum regulator cover; 7 — vacuum regulator rod; 8 — pipe for the vacuum hose from the carburetor; 9 — lubricating wick (filt) of the cam; 10 — support (driven) plate of the ignition timing regulator; 11 — ignition distributor rotor; 12 — side electrode with a terminal for the wire to the spark plug; 13 — ignition distributor cover; 14 — central terminal for the wire from the ignition coil; 15 — central carbon electrode with a spring; 16 — central contact of the rotor; 17 - resistor for suppressing radio interference; 18 — external contact of the rotor; 19 — driving plate of the centrifugal regulator; 20 — weight of the centrifugal ignition timing regulator; 21 — lever axis; 22 — breaker cam; 23 — breaker lever; 24 — stand with breaker contacts; 25 — breaker contacts; 26 — movable breaker plate; 27 - capacitor; 28 — ignition distributor housing; 29 — roller oil deflector clutch; 30 — bearing lock plate; 31 — bearing of the movable plate of the breaker; 32 — oiler body; 33 — screws for fastening the rack with breaker contacts; 34 — terminal clamp screw; a — groove for distinguishing ignition distributors 30.3706; b - groove for moving the stand with contacts

— turn the crankshaft of the Lada Classic until the mark on the pulley aligns with the long mark on the camshaft drive cover, and the marks on the camshaft sprocket align with the mark on the camshaft bearing housing; — disconnect the hose from the fluid supply tube to the heater, and from the exhaust manifold - the bracket securing the fluid drain tube from the heater; — disconnect the hoses from the carburetor, the intake pipe and from the outlet pipe of the cooling jacket of the VAZ 2107 cylinder head; — disconnect the starter protective shield and the exhaust pipe of the mufflers from the exhaust manifold;

NOTE It is better to leave the exhaust manifold and intake manifold with carburetor on the head. They can be removed later when disassembling the cylinder head.

— loosen the cap nut of the chain tensioner, press out the tensioner rod with a mounting blade and secure it with the cap nut; — remove the camshaft sprocket and bearing housing together with the camshaft; - Unscrew the bolts securing the cylinder head to the block and remove the head of the VAZ 2104. In order to reinstall and secure the head on the cylinder block, carry out the described operations in the reverse order, in this case: - do not forget to install the cylinder head gasket and the head cover gasket;

Cylinder head bolt tightening order

Procedure for tightening the camshaft bearing housing nuts

— tighten the classic fret head bolts in sequence, and the camshaft bearing housing stud nuts in sequence.

Tighten the cylinder head mounting bolts in two steps:

— preliminary torque 33.3–41.16 N·m (3.4–4.2 kgf·m) bolts 1–10; — final torque 95.94–118.38 Nm (9.79–12.08 kgf m) bolts 1–10 and torque 30.67–39.1 N.m (3.13–3.99 kgf .m) bolt 11.

When installing the chain, pay attention to the alignment of the installation marks. Tension the chain as indicated in the “Camshaft and its drive” subsection. When installing the cylinder head cover with a gasket, tighten the cover fastening nuts to a torque of no more than 7.85 N.m (0.8 kgf.m) so as not to cause the gasket to rupture along the mounting holes and warp the cover. When repairing a VAZ 2104, VAZ 2105, VAZ 2107 engine, it is recommended to replace the cover gasket with a new one. After installing the cylinder head of a VAZ 2104, VAZ 2105, VAZ 2107, check and adjust the ignition timing.

When is it necessary to replace the cylinder head seal?

When a gasket burns out, the damage is significant: integrity is lost, the part loses its shape. In the event of a breakdown, the damage is minor, sometimes even invisible to the naked eye.

The gasket becomes unusable for the following reasons:

overheat;
During installation, fasteners are tightened with a deviation from the tightening torque standards;
poor quality refrigerant;
engine malfunctions;
defective, low-quality product.

The power unit overheats due to malfunctions of the cooling system elements: radiator, fan, etc. To burn out the gasket, it is enough to drive literally 500 meters. When installing the cylinder head seal, it is important to observe the order of tightening the fasteners and the torque to which they are tightened. If these rules are violated, the seal will be deformed and will subsequently be broken. Poor quality coolant can cause corrosion, causing damage to the seal material and even the cylinder head.

A damaged cylinder head gasket can be identified by the following signs:

interruptions in the operation of the power unit;
leaks of working fluids from under the cylinder head;
rapid heating and overheating of the motor;
traces of coolant in lubricants;
steam in exhaust gases;
condensation on spark plugs;
increased pressure in the cooling system, smoke appears in the expansion tank.

Symptoms vary depending on where the gasket is damaged. If the edges of the cylinder bores are damaged, the engine may overheat and the pressure in the cooling system may increase.

If the coolant gets into the combustion chambers, the engine will start to stall, since it will be diluted with refrigerant in the fuel assembly and will not be able to burn completely. White smoke with a specific odor will come out of the exhaust pipe.

If there is damage on the edge of the seal, leaks of working fluids may occur at the point of contact between the cylinder block and the head.

Signs of a burned out cylinder head gasket.

If signs of seal burnout appear, you need to take a comprehensive approach to diagnosis. Before you start replacing the seal, you need to make sure that this is the reason. To do this, you need to perform the following series of actions:

Having discovered fluid leaks on the cylinder block, you need to make sure that it is flowing exactly from under the head.
We start the engine and analyze the color and smell of the exhaust. If they look like white smoke or smell like antifreeze, turn off the engine and carefully unscrew the cap from the expansion tank. The presence of exhaust gases in the cooling system is indicated by the smell of burnt fuel.
We start the engine without a cap on the expansion tank; there should be no traces of oil or gas bubbles inside it.
We turn off the engine and let it cool. We take out the dipstick to measure the oil level and look at its color. If its level has risen too much for no particular reason or there are traces of white-brown liquid, this indicates a mixture of oil and refrigerant.
Let the power unit run for 5 minutes and turn it off. We take out the spark plugs and inspect the electrodes. If they are wet, then there is a high probability that coolant has entered the cylinders.

How to remove the head on a VAZ 2107

It's no secret that a well-repaired cylinder head is the key to stable, uninterrupted operation of the engine with maximum power output and normal fuel consumption, therefore repair of the VAZ cylinder head should be carried out with special attention, since any mistake can lead to damage to almost all engine parts and new expensive repairs.

Replacing the gasket

So, to do this job, we will need:

A 10 wrench, preferably a head with a wrench or ratchet A 13, 17 and 19 socket head Flat and Phillips screwdrivers Extensions Wrenches and ratchet handles A torque wrench is the main tool that is required to perform this job

Step-by-step guide with photos on replacing the head gasket

I’ll say right away that the photographs presented in this article show the process of completely removing the carburetor, intake and exhaust manifold. But in fact, you can do without removing all these nodes. You can completely dismantle the cylinder head with the carburetor and manifolds installed on it.

So, first read the instructions for removing the camshaft on a VAZ 2107. After that, unscrew the coolant supply pipes:

And after that we take it aside:

Also, do not forget to disconnect the wires from the oil pressure sensor:

We check that all hoses and pipes are disconnected so that nothing is damaged when removing the cylinder head. Then you can unscrew the bolts securing the head to the cylinder block, first we tear them off with a wrench, and then you can twist them with a ratchet to make things go faster:

After all the bolts are completely unscrewed, you can carefully lift the cylinder head:

And finally we remove it from the block, the result of which can be seen in the photo below:

Carefully inspect the surface of the head from the inside to understand why the gasket burned out and antifreeze passed between the joint (if such symptoms were present on your car). If there are traces of corrosion close to the channels, then this is not allowed and it is advisable to replace such a cylinder head. If the traces of corrosion are not very deep, then you can grind the surface of the head to even out the grooves over the entire area. Of course, after such a procedure it will be necessary to select a thicker gasket in order to maintain the compression ratio.

If everything is fine with the cylinder head and you just need to replace the gasket, then be sure to thoroughly clean its surface. I do this with a special spray for removing gaskets, which is applied for 10-15 minutes and then cleaned off with a brush.

After this, carefully wipe the surface dry, install a new gasket on the block so that it lies exactly along the guides and you can install the cylinder head. Next, you need to tighten the bolts in a strictly defined sequence:

It is also worth noting that this should only be done with a torque wrench. I personally use an Ombra ratchet. It is suitable for most work on domestic cars, and the torque varies in the range from 10 to 110 Nm.

As for the moment of force when tightening the cylinder head bolts on the VAZ 2101-2107, it is as follows:

first stage - tighten with a torque of 33-41 Nm; second (final) from 95 to 118 Nm.

The photo above does not show the assembly process itself, so please do not pay too much attention to the repair conditions. It just shows clearly how all this is done. Ideally, everything should be clean so that no debris gets into the engine.

How to remove

The cylinder head is removed from the engine of the car if, to eliminate the malfunction, it is not necessary to remove the VAZ 2105 engine itself or if it is only necessary to remove carbon deposits from the surfaces of the combustion chamber and valves. The cylinder head must be removed from the engine in the following order:

— drain the coolant from the radiator and cylinder block and remove the air filter;

— disconnect the wires from the battery, spark plugs and from the coolant temperature gauge sensor; disconnect the choke cable from the carburetor;

— using wrench 67.7812.9514, remove the spark plugs and coolant temperature sensor;

— disconnect the throttle drive rods from the intermediate lever on the cylinder head cover of VAZ 2107, VAZ 2105, VAZ 2104 and remove the cover;

— disconnect the hose from the fluid supply tube to the heater, and from the exhaust manifold - the bracket securing the fluid drain tube from the heater;

— disconnect the hoses from the carburetor, the intake pipe and from the outlet pipe of the cooling jacket of the VAZ 2107 cylinder head;

— disconnect the starter protective shield and the exhaust pipe of the mufflers from the exhaust manifold;

Tightening diagram

It is necessary that all bolts are tightened as evenly as possible. To do this, they need to be pulled in two or three passes. During the first, the tightening torque of the VAZ 2107 cylinder head is 4 kgf*m. During the second pass, you need to set the moment to 11.5 kgf*m. The small bolt should be tightened to approximately 3.8. Installation of the camshaft is carried out in almost the same way; its fastenings will need to be tightened crosswise, but the moment here is not so important. The main thing is not to break the thread.

Removing the cylinder head

Sequencing:

Remove the battery. This will provide convenient access to the GBS head and protect against short circuits.
Remove the air filter.
Remove the carburetor on the carburetor version of the engine.
Remove the ignition wires and distributor (if equipped).
Drain the coolant from the cylinder head by unscrewing the plug. Before draining, you need to wait until the engine has cooled down.
Loosen the clamps and disconnect the rubber pipes of the cooling system going to the cylinder head.
Remove the valve cover by unscrewing the 8 nuts and removing them along with the shaped pressure washers.
Loosen the chain tensioner by unscrewing the fixing nut. For convenience, you can completely dismantle it.
Using a screwdriver and hammer, bend the edges of the lock washer on the camshaft gear mounting bolt and unscrew the bolt. Remove the gear. Tie the chain removed from the gear with wire so that it does not fall into the engine sump.
Unscrew the camshaft mounting nuts (10 pieces) and remove it.
Unscrew the brass nuts securing the exhaust pipe to the exhaust manifold and remove it along with the gasket.
Using a powerful wrench, unscrew the 10 bolts that tighten the cylinder head and the eleventh bolt installed on the head casting. Remove the head. It is quite heavy, so in order not to scratch the car, it is better to remove it from the block together.

Video about replacing the cylinder head on a VAZ

Step by step guide

VAZ 2107 cylinder head in the engine compartment

Many problems can be solved after tightening the bolts, but if this does not help, then a major overhaul of this unit may be necessary, which involves removing not only the cylinder head, but also other parts of the block. Some parts may need to be replaced, such as gaskets, valve stem seals and valve guides.

Tools

To work we will need the following tools:

a set of keys;
micrometer;micrometer
flushing liquid;
pliers;
hammer;
mandrels for removing and installing valves and caps;
torque wrench;torque wrench
tiles (preferably the spiral is closed);
desiccant.Valve desiccant

Before starting repair work on the cylinder head, it must first be removed and cleaned of dirt.

Stages

Preparatory work and head removal

The first step is to drain the coolant from the engine.
We remove the carburetor.
Having disconnected the pipes and hoses, remove the air barrier. Disconnect the hoses and pipes
Remove the head cover.
We align the marks on the crankshaft pulley with the mark on the camshaft drive and the marks on the camshaft pulley with the mark on its body as shown in the photo. Aligning the marks
By disconnecting the camshaft lock washer, loosen the chain tension.
Having torn off the bolt, remove the sprocket.
Unscrew the fastenings.
We remove the camshaft with the housing. Camshaft
Having previously made marks using a marker, remove the rockers. Removing the rockers
Disconnect the wires.
We remove the pipe and unscrew the bolts securing the cylinder head to the block.
We remove the head.
We inspect its condition and clean it of dirt. Inspection of the condition of the head

This video shows the process of removing the cylinder head.

Checking status

Now it's time to dry out the valves. This is done with a special device. If chips, cracks, and rust are not visible, we conduct a further inspection. We evaluate the condition of the saddles, the repair of which is recommended every two hundred thousand kilometers.

Changing guide bushings

We inspect the guide bushings; if they are in unsatisfactory condition, they must be replaced.

A special tool is used to remove them. If you don’t have this on hand, you can get by with pliers and a clamp. After removing the bushings, we measure their diameter. We buy similar ones, the size of which is 0.05-0.07 millimeters larger than the ones being replaced.

The guides are pressed in using a mandrel, an electric stove, a hammer and lubricant.

We place the head on a stand at the edges.
We place the electrical device under the place of work.
We wait until the metal heats up to about one hundred degrees (so that it expands).
Now you need to properly lubricate the bushing with grease.
Having removed it from the holders, we drive in new guides.
When all eight are replaced, we wait for the cylinder head to cool down.
The valves should not dangle and move freely, there should not be any jamming.

Checking the tightness of the head

Leak test

To ensure a tight fit of the valves to the seats, you must do the following. Using lapping paste, lubricate the valve and insert it into the head. There are several techniques for rotating it, here are some of them:

using a hose tightly placed on the part;
using a device very similar to a corkscrew.

The main sign of good valve lapping will be a specific matte surface of the seat in the place where it contacts the part.

The tightness of the head can be checked by pouring kerosene into the collectors; you can also use gasoline. If done correctly, there should be no leaks for the first five to seven minutes.

Attention! All engine parts must be washed with a special solution, this will ensure long-term and uninterrupted operation of the power plant for a long time.

When assembling the head, be sure to pay attention to the correct tightening of the bolts. It must be carried out strictly according to the scheme. In case of incorrect broaching, distortions may appear and, as a result, all your previous work will be crossed out. If you have any questions, watch the video.

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Cases when it is necessary to replace cylinder head gaskets

Replacing the cylinder head gasket of the VAZ-2107 is mandatory in a number of cases:

If there is damage near the combustion chambers, engine overheating leads to this unpleasant situation. When the cooling system malfunctions, and the driver prefers not to pay attention to the malfunction and puts off repairs, the condition of the cylinder block and its head leaves much to be desired.
A leak of antifreeze or coolant is noticed - a breakdown is often accompanied by incorrect operation of the ventilation device, thermostat, or a banal leak of substance from the hoses.
There is an engine oil leak. If traces of oil leakage are noticed on the outside, it means the gasket is not fitting well. Tighten the head bolts, if this does not help, then you will have to replace the cylinder head gasket yourself.

Finding the cause of gasket damage

After the VAZ 2107 cylinder head is removed, you should inspect the gasket for damage and try to determine the cause. If the cause is not identified and eliminated, it is possible that the new gasket will soon also burn out.

Burnout of the gasket between the cylinders occurs due to engine overheating, constant detonation of low-quality fuel, or cylinder head deformation due to temperature effects or improper tightening. In this case, you will have to grind or change the head before assembly.

The gasket can be destroyed by rust. This happens if water is used in the cooling system instead of antifreeze. The VAZ engine is not designed for cooling with water, so after installing the gasket and cylinder head, it is necessary to flush the system and fill it with antifreeze.

Another reason for the destruction of the gasket is its poor quality. In this case, it is enough to simply replace the gasket with a good one.

Assembly

Pay attention to such a moment as tightening the cylinder head. A lot will depend on this operation. If you do not apply force, the gasket will burn out and the engine may boil. Therefore, experts recommend using a torque wrench (see figure below).

The bolts are tightened according to a special pattern - from the middle to the edges. The first tightening force is 4.1 kgf per meter. The second one is 11.45. This applies to ten large bolts. What about the little one, 11th? Here the tightening rate is 3.8 kgf/m. If your key is designed for Nm, the first tightening requires a value of 40 units. The second is produced with a force from 95 to 117 Nm. After replacing the cylinder head gasket on a VAZ-2107 car, you need to install the camshaft and split gear back. It is important to adjust the timing drive. Yes, on an 8-valve engine the pistons will not come into contact with the “plates”. However, there will be significant misfires (to the point where the engine simply won’t start). At this point, the replacement of the VAZ-2107 cylinder head gasket has been successfully completed. You can make the first start and check the operation of the motor. Don't forget to pour antifreeze into the system.

Gasket replacement and assembly

If your car had pronounced symptoms of a gasket failure, then you don’t even have to look for its damage; it still won’t be possible to repair it. Immediately buy a new one and put it in place. But you need to clean the entire surface that the gasket is attached to beforehand. There should be no remnants of the old one left. You can even evaluate how smooth the surface of the head and the block itself are. It is quite possible that the cylinder head has an uneven surface, which is why, no matter what gasket is installed, it very quickly begins to leak antifreeze or air.

Before installing the VAZ 2107 cylinder head, it is necessary to check the serviceability of all valves. If there is such a need, replace the seals. This will reduce oil consumption. When everything is complete, place the gasket on the block. Place the head on top. Please note that there are two types of gaskets - old and new. The latter is produced by a very thin layer of sealant around the entire perimeter.

Do not forget to align the gasket so that it is positioned as accurately as possible. There are two guides for this purpose. And the time has come to tighten the cylinder head of the VAZ 2107. First, tighten all the bolts and tighten them by hand until they stop. And then you arm yourself with a torque wrench and, according to the diagram, tighten it. This diagram is shown in the figure. However, it is not difficult to remember it, since everything happens criss-cross.

That's it, assemble your VAZ 2107 and try to start it. Just remember to fill the cooling system with water. If the engine is working perfectly and the gasket does not allow air or water to pass through, then you can add antifreeze.

Many drivers are concerned about a fairly common issue, namely replacing the cylinder head gasket of the VAZ 2107. Cars of this model have proven themselves well on our roads and in our operating conditions. But problems associated with the repair and replacement of certain components and systems remain and many have to be solved independently.

The replacement process itself, both with an injector and on an engine with a carburetor on a VAZ 2107, is simple and in order to cope with it, you just need to carefully study the material we offer and watch the video.

Start of work

The very first step is to remove the air filter. Of course, on a carburetor engine it is somewhat easier to remove it. If you have an injector, you will have to tinker with its rubber fasteners. But the essence remains the same - it is necessary to disassemble the fuel system completely to get to the cylinder head. But we will look at the example of not an injection, but a carburetor seven. Still, there are many more classic cars with such a power system.

It is advisable to dismantle the carburetor, since if you remove the head along with it, you can accidentally damage it. On all classic series cars, the carburetor is removed in the same way. This procedure is quite simple, but it will take some time. Now you can unscrew the nut securing the distributor and remove the distributor along with the wires. Getting closer to the engine, all that’s left to do is drain the antifreeze from the system.

And then turn off all the pipes that you see. After this, it will be possible to dismantle the cylinder head cover. It is secured with nuts and shaped washers. Don't lose them during repairs. That's all, the preparation is complete, you can begin the most difficult part - dismantling and installing the cylinder head.

Dismantling the unit and preparing for repair

Carrying out work of this kind requires fairly high qualifications and special equipment. Removal of the cylinder head is carried out in the following sequence:

The car is installed in a garage box, the battery is disconnected.
The following elements are removed from the engine: air filter housing, carburetor and head cover.
The upper timing sprocket is unscrewed from the camshaft and removed.
Using a socket and a powerful wrench, the head mounting bolts are removed.
After this, the assembly is carefully removed from the cylinder block.
The gasket, or rather its remains, remains on the surface; they must be removed using a non-metallic tool to avoid damage.

Which cylinder head gasket is the best?

The sealing gasket serves to strengthen the engine cooling channels and well preserves the oil channels in the cylinders that have the gas distribution function. Therefore, it is not worth saving on the cylinder head gasket. If the part is of poor quality, a breakthrough may occur between the cooling system channel and the drainage channels of the lubrication system. There is a breakthrough located at the junction of the cooling system channel and the cylinder.

By the way, the same thing happens when the cylinder head is loosely tightened, but in any case the gasket will have to be changed.

Automotive stores sell the following types of cylinder head gaskets intended for installation in the VAZ-2107:

Asbestos - involves associated engine repairs. The advantages of the material are heat resistance, increased elasticity, and good elasticity characteristics.
Non-asbestos products are also easy to use, and all thanks to minimal shrinkage and excellent restorative properties.
Metal ones are considered the best among all other cylinder head seals. The point is that the pressure is distributed evenly throughout the block.

A video of how to replace the cylinder head gasket of a VAZ-2107 with your own hands can be seen below:

Replacing the cylinder head gasket VAZ 2110 (2112)

On VAZ 2110 and 2112 cars, a 16-valve four-cylinder engine is often installed; it has almost the same cylinder block, but the cylinder head is different - it is two-shaft. It is somewhat more difficult to remove such a cylinder head; the timing marks are also installed differently.

We replace the PGBC as follows:

We prepare everything for dismantling the cylinder head (remove the battery terminals, drain the antifreeze);
completely disconnect the air filter housing with pipes;
remove the oil filler cap, dismantle the decorative cover of the cylinder head (4 fasteners);
disconnect the high-voltage wires, remove the ignition module;
dismantle the upper timing belt casing, the most difficult thing to get to is the lower bolts;
unscrew the tension roller, remove the timing belt;
dismantle both camshafts, unscrew the bolts of the iron timing case to the cylinder head. You should immediately remove the dowels carefully, otherwise you may lose them. Before removing the gears, it is recommended to rotate the crankshaft and immediately set the timing belt to the marks;
remove the intake manifold; after unscrewing the nuts, you need to pull it out of place;
dismantle the valve cover by unscrewing all its fastening bolts;
We disconnect all the existing wires and cylinder head fastenings, as well as the fuel rail, gasoline hoses (we unscrew the fittings with two horns and wrenches). When unscrewing the fittings, it should be taken into account that there is pressure in the fuel system, so it is better to bleed it off first;
remove the protective cover of the exhaust manifold, disconnect the exhaust pipe of the muffler. It is inconvenient to get there; it is better to unscrew the nuts from below;
unscrew the thermostat bolts (3 pcs., 5mm hexagon);
twist the cylinder head mounting bolts (10 pcs.);
Having disconnected everything that can hold the cylinder head under the hood, remove the cylinder head.

We clean the surfaces, install a new gasket, and mount the cylinder head in place. Before installing the cylinder head, it is necessary to set the piston of the 1st cylinder to TDC, and on the head itself you should check the installation of the camshafts by placing the gears on them - the marks should face up. Having replaced the cylinder head gasket of the VAZ 2110, we start the engine and, as the engine warms up, add antifreeze to the cooling system.

Still, I managed to overheat the engine (it’s my own fool’s fault, I spared 100 rubles for the fan switch sensor, pressed the button - this is the result), the radiator pipes inflated like balloons))

I agreed with the guys I knew at the service station to give me a place near the box, give me tools and help with advice)) For locals, the station is not located at st. Liza Chaikina, 85 - it’s like driving from the “bread depot” stop to the construction market on a blind road on a fucking road. Photo of the drive below.

I purchased gaskets: Cylinder head gasket for pistons with a diameter of 76mm (I have a 2103 block), gaskets for intake/exhaust manifolds, carburetor gaskets (it is not necessary to remove it, but I did), high-temperature sealant, thread sealant (I had a lot of nuts and studs unscrewed), valve cover gasket, chain cover gasket (also no need to remove, I just changed the chain at the same time), muffler exhaust pipe gasket (I have 4 bolts), gaskets for the heater hose fittings and radiator hoses and a little antifreeze to add later.

The process itself. 1. Drained the coolant 2. Removed the carburetor and all the pipes going to the cylinder head, disconnected the exhaust pipe of the muffler. 3. Removed the manifolds 4. Disconnected the camshaft sprocket. 5. Removed the cylinder head.

After which I took the cylinder head to be polished and the carbure to be rebuilt by a master.

Any experienced car owner will tell you that a stable cylinder head is a guarantee of reliable functioning of the car’s engine. A VAZ 2107 cylinder head in good condition reduces fuel consumption and improves vehicle dynamics.

Inexperienced car owners should know that head repair work should be carried out only by highly qualified specialists. Otherwise, an incorrectly adjusted unit can lead to damage to many engine components. Restoration work can cost a considerable amount. But experienced car enthusiasts with the required skills can replace, repair and tighten cylinder head bolts themselves.