S6K Diesel Engine Cylinder Head 518051 518052 3066 For Excavator E320C / E320D

Specification

Description

Material and design of cylinder head

Construction: Cylinder heads are made from either cast iron or cast aluminium. Cast aluminium is more expensive to produce, but offers considerable weight-saving and dissipates heat better than cast iron.

Combustion chamber: The combustion chamber is the space where the fuel and air mixture is burned. 

Ports: The ports of a cylinder head are passageways that allow air and exhaust gases to enter and leave the combustion chamber.
Cylinder head layouts.

Modifications & Upgrades: A cylinder head can warp over its lifetime, and the lower face that mates with the block can wear. 

Types Of Cylinder Heads

1. Flathead Cylinder Heads: These were the first type of cylinder heads. Flathead cylinder heads simply protect the cylinder block and have no moving parts. These cylinder heads do not allow for an efficient air flow, and thereby provide a poor engine performance.

2. Overhead Valve Cylinder Heads: These cylinders heads are superior to flathead cylinder heads. Overhead valve cylinder heads have the camshafts above them. These heads have their pushrods and valves connected to provide a smooth airflow.

3. Overhead Camshaft Cylinder Heads: These are the most advanced designs of cylinder heads. Overhead camshaft cylinder heads have the camshafts inside the cylinder head, eliminating the need of pushrods. This provides a better airflow, and in turn, increases the efficiency of the engine.

Problems in Cylinder Heads and Their Symptoms

The most common problem with cylinder heads is cracks that occur often due to engine overheating. A cracked cylinder head may leak the coolant, due to which the engine will fail to cool efficiently. This results in further overheating of the engine. When a cylinder head cracks, it will also cause the oil to leak into the combustion chambers. This can be detrimental to the engine and can result in costly repairs for the engine. In many of these cases, the entire engine will have to be replaced. Other symptoms of a bad cylinder head include poor engine performance and engine misfire.

When a car overheats, a lot of people fill water in the radiator without attempting to narrow down the actual problem. This can also cause the cylinder head to crack, since when water is added, it results in a rapid change in temperature.