The cylinder head gasket is the most important gasket in the engine. Any inaccuracy during its installation or, moreover, manufacturing, leads to the inevitable death of the engine. Without exaggeration, we can say that the head gasket delimits the engine lubrication system, the cooling system and seals the combustion chambers. If you give the gasket some slack, the engine will at least knock or jam.
Why do we need and what are head gaskets made of?
The cylinder head gasket must be replaced when the head is removed. The gasket, although expensive, is a consumable item and cannot be restored or reused. The gasket has to withstand enormous loads. Both thermal and mechanical. The temperature in the combustion chamber can reach 1200°C, and in the VAZ 2106 it is no less than 1000°C, so the requirements for the material from which the gasket is made are very high.
The heat-resistant gasket is made of asbestos-containing material, which does not collapse or change its structure when exposed to high temperatures. Asbestos was banned for use in automotive technology, so it is now being replaced with new materials, but more often than not, the asbestos content is simply not indicated on the packaging of the gaskets. Ceramic gaskets are expensive, so they are used only on expensive cars, to which the nine has nothing to do.
In addition to the thermal load, the gasket must withstand the severe pressure that forms in the combustion chamber, as well as ensure sealing of the oil channels and cooling system channels. To do this, the head gasket must have a certain elasticity and strength. Tensile strength is given to it by reinforcing materials, which most often are thin steel wire.
Tuning yellow iron
The VAZ 21124 includes “yellow iron” tuning, in which stabilizers (for agility), reinforcements and braces (for road stability) are installed. However, be careful with counterfeits of these parts; at worst, they will damage the car, and at best, you will be throwing away a lot of money.
Feel like a real circuit racing driver with the VAZ 21124 hatchback. All you need is to install additional parts: a nameplate (symbols) on the handle of the car, neon lighting under the bottom of the car, an air intake on the hood and roof. The installation of front and rear bumpers with an aerodynamic body kit will add power to the car.
Signs of a broken gasket on a VAZ 2109
There are no regulations for replacing the gasket, since a good and well-made part can serve for quite a long time until the head is dismantled. But it is necessary to monitor its condition, and the difficulty is that damage to the gasket rarely manifests itself externally. Oil drips and antifreeze drips may not always indicate gasket damage. But there are a number of unconditional signs that the gasket needs urgent replacement.
- Suspension in the engine crankcase. This is determined by checking the oil level. Instead of clear or even dark oil, a watery, dark brown suspension appears on the control dipstick. The coolant can be forced into the lubrication system, where it mixes with the oil, but the mixture may not be homogeneous and looks like a suspension. The first sign of antifreeze leakage into the crankcase is an increasing oil level.
- Oily spots in the coolant expansion tank. The same story - oil got into the antifreeze, but it cannot dissolve there, so it looks like stains on the surface. This is also a signal that the gasket is broken.
- A drop in compression in a particular cylinder or in two adjacent ones. Most often this happens when the gasket is simply of poor quality and burns out in the place where the cylinder is sealed. It can burn out anywhere, along the perimeter of the combustion chamber - both outside the block and into the channels. External burnout can be heard immediately by sound. Therefore, such a nuisance must be eliminated immediately.
Replacing valve seats
If the seats burn out and are destroyed, as well as if the heads are strongly recessed into the body (“sucked”) or have been subjected to repeated countersinking, they need to be replaced. The seats are replaced on a milling machine. The defective seat is bored with a milling cutter and removed from the socket. Then, according to the technology, the head is placed in a thermal oven and heated to 120-150 degrees. Saddle blanks in the form of rings are placed in liquid nitrogen to reduce their temperature to minus 40 degrees. Using tongs, place the cooled rings of future saddles into the sockets and lightly tap them into the body of the head. Further operations for processing seat chamfers are performed on a special milling machine or manually with a set of cutters.
How to replace the VAZ 2109 block gasket
Replacing the cylinder head gasket of a VAZ 2109 is carried out according to the same scenario as on the eight, on VAZs of the tenth series, since the engine designs of these cars differ very slightly from each other. We will present the procedure for replacing the gasket schematically, since there is no need to describe the unscrewing of each bolt, and everyone has a Murzilka in the glove compartment. We will dwell only on the most important points that cannot be neglected in order to avoid failure of the entire motor.
The gasket is replaced as follows:
- We remove the terminal from the battery, drain the antifreeze, maybe not completely, if it is in normal condition. Drain the oil if antifreeze gets into it.
- We disconnect the wires from the sensors, remove the thermostat, air filter, timing cover, and disconnect the exhaust pipe of the muffler.
- We align the shafts and gears strictly according to the marks, remove the timing belt, disconnect all the hoses and wires from the carburetor and remove it.
- We remove the cooling system pipes and the timing cover, and then unscrew the cylinder head mounting bolts. After this, carefully remove the head from the car.
Process
Before you begin removing and repairing the VAZ cylinder head 2109
, it is necessary to carry out some preparatory work in order.
Removal
Pipe as a lever Remove the head mounting bolts with washers.
Gasket that has expired and needs to be replaced
Also, if necessary, we carry out repairs or modifications to engine block components.
Tuning
Qualified adjustment, modification and tuning of the head
VAZ 2109 will help you fully unleash the capabilities of your power unit. You've probably heard a lot about this, read or even watched videos on the Internet. Typically, when tuning, the channels are bored and smoothed, thereby reducing the turbulence that reduces power. The valves are changed to larger ones and ground into the seats. Tuning may also involve replacing standard valve guides with bronze ones.
Valve lapping
Lapping control is carried out as follows:
If the liquid does not flow through the valves, this means that the work was done efficiently and the valves were ground in correctly. After all faults have been eliminated, you can begin installing the head.
Installation
Tightening with a torque wrench
Next, we install the dismantled equipment, injector or carburetor, in reverse order. Fresh coolant is added. Wires and hoses are connected.
Attention! This operation requires some knowledge and skills. Therefore, before performing it, you should know that the bolts need to be tightened according to a certain pattern and with a certain force. It would be useful to read additional material on this topic and watch the video
As you can see, there are certain difficulties in modifying the VAZ 2109, tuning, replacing plugs and assembling. But if you learn how to do these jobs yourself, calculate how much money you can save.
Installing the gasket and assembling the VAZ 2109 engine
The worst is over. Now it remains to find out the reasons for the burnout of the gasket or breakdown between the channels. Most likely, the gasket itself is to blame, but you need to be prepared for unpleasant exceptions. The fact is that if the gasket worked for some time in a broken state, cavities could form on the mating surface of the cylinder block or head. Therefore, before changing the gasket on a VAZ 2109, it is imperative to carefully examine the mating surfaces. Otherwise, a new gasket will last for a week and we will continue to change them ad infinitum.
If the surfaces are in order, lubricate the new gasket with a special heat-resistant sealant, carefully studying the instructions. Sealants are different, and application methods are different. Every self-respecting nine-wheel driver should know the procedure for tightening the cylinder head bolts by heart, but just in case, we have shown it in the picture. It is advisable to take into account the torque when tightening. If you have a torque wrench, great. Then we tighten the bolts the first time with a torque of 2 kgf/m, the second time with a torque of 8 kgf/m, and after that we press them in the same order by a quarter turn.
This is how the head gasket is changed on a nine and an eight. Every time you check the oil level in the engine, be sure to pay attention to its condition, and then your nine will run for many more years. Buy good gaskets, and good luck on the roads!
Let's get inside the car
Tuning VAZ 21124 includes changes to the internal world of the car. Replacing the pump and timing belt for VAZ 2110, 2111, 2112, Lada Priora, Lada Granta, Lada Kalina. (16 valves) is the pump leaking? How to change the pump on a 16 valve engine? Additional devices are installed in the VAZ interior and the old ones are improved; sports seats, a steering wheel and airbags are installed. For a chic look, the VAZ 21124 lacks door trim, new armrests, interior handles and wooden pockets.
In the world of car tuning design, there is a wide range of PVC fabrics for ceiling upholstery, many options for door cards and leatherettes, which differ in color and design.
The sports-style console looks beautiful in the new VAZ 21124, especially in yellow, red or blue. Replacing the timing belt on an 8-valve Lada Granta engine directly with your own hands is almost no different from that performed on the 16-valve version of the domestic Lada Granta. Don't forget about podiums for speakers and columns; they come in different diameters, colors and models.
If desired, corner covers, door inserts, sun visors, decorative floor coverings can be installed in the interior; it all depends only on your imagination.
Tuning VAZ 21124 photo
Tuning the VAZ 21124 changes most of the car’s system, so this car can rightfully be classified as a high-speed car. It’s so nice when on the road, your car easily bypasses other cars, moves easily and does not make noise when accelerating quickly. Installing a turbine on a VAZ 21124. A high-quality braking system, steering, improved suspension for maneuverability and easy handling - all this is called chip tuning of the car.
conclusions
In the article you learned how to replace the cylinder head gasket on a VAZ 2109 car, fill it, bind it, repair it, and grind the valves. Please note that to repair the engine and replace the gasket, you need to have not only tools, but also knowledge, without them you can only ruin everything. During all activities, try to work as carefully as possible so as not to damage the system elements. Please note that very often the cause of black smoke from the exhaust system and excessive oil consumption is severe wear of the valve seals. And if your engine has such symptoms, then do not be lazy to replace these seals.
