cylinder head is one of the most important sites in the construction of an automobile engine.The importance of this part highlights the fact that the cylinder head is suffering half of the engine load.Accordingly, the unit suffers a huge load.Therefore, every self-respecting driver must regularly diagnose the mechanism for cracks and deformations.As a rule, repair cylinder heads require a car at a mileage of 250-500 thousand kilometers.This mileage is almost completely coincides with the frequency of engine overhaul, cylinder head so often when it is repaired.
Why cylinder head crashes before the deadline?
This happens only in rare cases and only when the engine boiled.Few people know, but even after the first boil the head unit can be covered with cracks, and if you sprinkle it with water to cool, if not distorted.That is why it is not desirable to bring the engine to a boil.
repair cylinder heads
Whatever it was, but the cylinder head is reduced in both cases the same, and all work is performed in a similar manner.Generally, repair of cylinder heads goes from 2 to 5 days of free time.Of course, you can meet in one day, but you need to have special skills and knowledge.By the way, all the technology requires high precision, so the grinding and milling of the surface must be made on special machines.
repair cylinder heads can be divided into several stages.The ground is made of cracks (certainly before it is removed from the cylinder head of the engine).Further there is a repair guides.If their condition is critical, you need to replace them.In the first case by means of special equipment is reduced radius hole valve stem.This produced a phased roll reeling devices carbide and processing scan (to restore it cylindricity).In the second case, a new set is acquired by heating the sleeves and installed in place of the old.Then there is the alignment of the mating plane of the head.This is done only in cases where the surface was deformed, for example, after overheating.After this is done the replacement or repair of valves and seats.At the final stage varies camshaft tappets and then with cooling channels and grease removed chips and high fat.
Repair cylinder head: the price
It should be noted that the equipment to restore the cylinder head is several times more expensive than the car itself, so in case of breakage block motorists are turning to the service station involved overhauls engines.The cost of repair of the cylinder head is small.If it is a domestic car, this service you will have 3-6 thousand rubles.Repair of imported cars cylinder head, for example, the French "Peugeot" will cost you 15-16 thousand rubles.
