Cylinder Head Porting and Power Production

Hysteric said

Because an engine is not an air pump. Oxygen is just a small part of what happens in a cylinder to make power

You burn the fuel not the air and the fuel has to be conditioned properly to achieve that aim. If you really want to make power you need to study combustion and the chemistry involved because that is what really happens. Gasses burn in a cylinder liquids do not.

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Taking your statement a little further I would add this and I've said it more than once and it still amazes me how many "engine builders" really don't understand.

The combustion process is pretty simple, it is not an explosion it is a burn. We've all heard that a million times I'm sure.

Power production comes from the rapidly expanding Nitrogen in the air which generates cylinder pressure.

Nitrogen is an inert gas that doesn't burn--it only expands with heat for anyone wondering.

It is our job to fill the cylinders with as much air/fuel mixture (in the right ratio) that will burn with as much BTU's released in the shortest amount of time. J.Rob