MGN
In the late 1980s, two W12 engines were designed and built for use in Formula One. In France, Guy Negre produced the MGN which had three banks of four cylinders offset so that each crankpin accommodated three connecting rods side-by-side. The MGN also had a novel system of cylindrical rotary valves located at the top of the combustion chambers, making the engine notably compact. The engine was tested in an AGS Formula One car, and in a Norma sports car, but never raced.
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