The performance accuracy of all elements of the engine is very important and this became an axiom. And the tightening of the cylinder head bolts is not an exception. And the reason is simple. Imagine the load experienced by all elements of the mount: strong temperature fluctuations, and constant vibration. As a result of numerous studies inquired by professionals, the weight consists of 5000 kg or more. Imagine what kind of pressure undergoes every engine bolt while accelerating. To ensure the connection between the block and the cylinder head, you have to make sure that the bolts are stable long enough.

In most cases, the bolt is oblongated. Screwing this item in a block that has been affected by corrosion, torque is increased by several tens of units before the parts were linked up. If you have already tightened the bolt, you must know that the tension increasing is gradual and the material will initially take it`s elastic state, until, finally, will become ductile.