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While working with Bieneman on this story, he kept stressing how every port design must be done specifically for the type of engine it will be run on. For example, this is the combustion chamber of the Sprint head we just showed you. Notice how the spark plug hole has a "wall" between the plug hole and the intake valve. This is to protect the tip of the plug from all the alcohol that enters the port during every intake stroke to keep from drowning the spark plug in fuel.