The cylinder head, often referred to simply as the head, sits above the cylinders on top of the engine block. It closes the top of the cylinder which creates the combustion chamber. The gap between the head and the block is sealed by the head gasket. The head usually contains the passages that supply fuel and air to the cylinder and remove the exhaust.
What is a cylinder head?
A cylinder head sits on top of the engine block and covers its cylinders, thus creating the combustion chamber. The cylinder head creates the space for the passages that feed air and fuel to the cylinders, and is sealed in place by the head gasket. Due to the constantly changing temperatures and high levels of pressure, the head has to be robust enough to withstand the demands placed on it without cracking or breaking. It is a complicated and vital part of the engine and the car as a whole, meaning that any problem it might develop should be repaired as quickly as possible.
What does the cylinder head do?
The cylinder head allows the engine to perform at maximum capacity by connecting to the intake and exhaust manifolds to allow the quick burn of fuel and air that moves the engine’s pistons. The intake manifold feeds air into the head, where it is combusted with fuel to produce exhaust gases, which are expelled through the exhaust manifold. It’s important that the intake and exhaust valves, which allow the entry and exit of relevant gases, open and close at the correct times to keep the engine running smoothly.
Why do Heads Fail?
The most common reason for cylinder head failure is overheating caused by for example coolant loss, head gasket failure or restricted flow of coolant. In extreme cases a cracked or damaged cylinder head can result in terminal damage to the entire engine! You must deal with any problems as soon as possible to try and prevent this from happening.
K-Seal ULTIMATE to the rescue
K-Seal ULTIMATE will permanently repair most cracks or leaks in the cylinder head where there is coolant loss. You simply shake the bottle, pour and go. It is literally as simple as that!
Cylinder head repair cost
A good garage should be able to repair and recondition a cylinder head from as little as $75, but it can also cost hundreds of pounds to do the same job. This will depend on the value of the cylinder head and the price you are quoted to repair it if it develops a crack or stops working as effectively as it should. In many cases, it may be worth simply buying a new one.
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