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The Cylinder Head: Buying Guide

By Ruthie Calderon


In order to offer the required maintenance for your car, you have to understand it in and out. Just like you are your own first doctor, you are your car's first mechanic. With a deep understanding of smaller things that affects the engine performance. The cylinder head, or a "head" is perhaps one of the least understand the component and yet very important for car performance.

This is the part attached to the cylinder block that contains the cylinders and the pistons. The head gasket seals the blocks, thereby forming the combustion chamber which is the essential required to build the torque and the horsepower. The head plays an important role in allowing the inward flow of air-fuel mixture and an outward flow of the exhaust gases from the combustion chamber.

A "head", as it is simply referred, is a very important part of any internal combustion engine. Normally, it is attached to the cylinder block top. This is the part that contains the piston and the cylinders. In order to form the combustion chamber, the blocks get sealed with the head gasket. It works by allowing the inward flow of a mixture of fuel and air while allowing for the outward flow of the exhaust gases into the combustion chamber. The process is very necessary for the car to build torque and the horsepower.

The head gasket is the component that forms the seal to the blocks, and thereby allowing it to work as a combustion chamber which in turn builds the torque and horsepower needed for the car to move. It has several roles, the main one being acting as an inlet of the air and fuel mixture into the combustion chamber, and the outlet of the exhaust gases to the chamber.

When it comes to design and complexity, it varies depending on the engine. In most cars, a single head is enough. The V-engines on the other hands have two heads to fit into the two cylinder banks which are part of the V. In the case of trucks and tractors, each cylinder has a head for ease of repair and general maintenance.

When you set off to buy this component, your car engine is the main thing to consider in your quest. This is due to the fact that not all can perfectly fit in any engine. As such, the engine design and the size matters a lot. Take note of the engine so that you can shop for the right head. This consideration helps you narrow down to specific brands.

In order to make the right choice, the second aspect is to consider is the expected performance level. Since different aspects of the head affect the car engine performance, you have to be careful to be able to balance between different aspects. Some of these factors include the valve or port flow capability (efficient flow is recommended), mixture motion, and the material (aluminum and cast iron) each with its advantages and shortcomings.

The other factors to look at include the valve or port flow capability that determines how free flowing the ports and the valves are in the engine, the mixture motion (the motion of incoming fuel and air mixture), and the material. It should be made of a more rigid and strong material so that it can effectively and uniformly distribute the forces which in turn facilitates fuel combustion.




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