Quote:
Originally Posted by GH85Carrera
Look at modern Porsche engines designed in recent times. Lots of power from a 4 cylinder engine. But they start with a clean piece of paper, well a fresh computer page. They get to design in modern manufacturing tolerances and methods. Not starting with an engine designed in 1960 with a slide rule and pen on paper.
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Four valves and variable valve timing make a big difference.