Ferrari flat 12cylinder Colombo engine This motor was technically a 180 degree V12 and not a true boxer motor It was created in multiple forms and designed by Giaoccino Colombo for both V12 and flat12 applications It first appeared as a flat engine in the Ferrari 365 GT4 BB of 1971 (according to Wikipedia)A flattwelve engine, also known as a horizontally opposedtwelve, is a twelvecylinder piston engine with six cylinders on each side of a central crankshaft Flattwelve engines are less common than V12 engines, however they have been used in various racing cars during the 1960s and 1970s, and in midengined Ferrari road cars from DesignA flattwelve engine was also produced by Porsche for the Porsche 917 sports car Chevrolet used a horizontally opposed aircooled 6 cylinder engine in its Corvair line during its entire production run from in various applications and power ratings, including one of the first uses of a turbocharger in a massproduced automobile
The Mezger 16 By Ink Porsche S Unraced 917 Prototype Engine A Flat 16 Producing 750 Bhp
