Because of what it may be necessary to replace the gasket gbtz?

The head of the cylinder blocks is one of the most important parts of the car, on the quality of which the dynamic characteristics of the car directly depend. In the head are the combustion chamber and the valve mechanism, which is an essential part of the gas distribution system.

The head of the block of cylinders is screwed to the block, and so much that the bolts or studs that are used for this purpose are used only once, after which they become unsuitable for this operation, since they are stretched.

So, between them is installed a gasket cylinder head. There are times when you need to replace it.

In general, replacing the gasket gbc - the procedure is not too complicated, because, whatever one may say, it is preceded by the removal of the cylinder head. Of course, there may be some problems here, but the cylinder head gasket is a very important detail, the replacement of which occurs exclusively in extreme cases.

In principle, when it may become necessary to replace the gasket of the hbt, a little. The first is a normal engine repair, in which the head is removed. The fact is that the steel rings with which the inner edges are framed are compressed and attracted to repeated use when attracted strongly. In addition, the head has channels for the flow of lubricant and coolant. Their edges become shaggy. Also on both sides of the gasket there is a heat-resistant sealant. Its recovery is impossible, but nowadays all the details are available at the nearest autoshop.

In addition, the replacement of the gasket is due to poor quality assembly after installation of the head, since the latter could be attracted with insufficient force. Then on its surface it will be possible to see traces of leakage of oil or cooling liquid. The entry of the first substance between the gasket and the fitting parts leads to imminent consequences in the form of leakage of liquids filled in the engine block.

More problematic is the replacement of the gasket in the case of its burn-out. This is another consequence of loose fit. As you know, the temperature in the combustion chamber during the explosion of a combustible mixture reaches 800 degrees. Therefore, gaskets are usually made of paronite in a steel frame. But the steel rings are located only along the inner edge, so the leakage of gases beyond their limits leads to a sharp decrease in compression in the cylinder, perhaps in none. As a consequence - a drop in power. Such a problem can be determined by the characteristic noise. In addition, a cooling or lubricating fluid may enter the channel. This leads to their release into the engine compartment.

At the intake stroke, a vacuum is created in the cylinder, which draws oil from the lubrication system through the hole formed.

In principle, this problem is rarely encountered, but if it does occur, then it is not worth delaying with elimination, because such a trifle can completely disable the engine.