What is the purpose of the head?
The use of the head is to seal the combustion chamber. It is used to allow the pistons to work by
using very specific timings of valves opening and closing. It allows the four steps of the internal
combustion engine to work. the crank
shaft in the block is connected to the cam shafts in the head to work together.
What have I learned?
I learned that the head is made of a different alloy. It is made of aluminium and the block is made
out of a cast iron. I did not know that
the heat in the head is enough to warp the head. It is also hot enough to expand the length of
the valve stems. A special tool called a
feeler gauge can be useful when checking seals,
in this case we learned how to use the feeler gauge to check if the
surface of the head was not warped.
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