Porsche produced a series of normally-aspirated, and later an extremely powerful twin-turbocharged flat-twelve engine for their Porsche 917 sports prototype; between 1969 and 1973.
Porsche produced a series of normally-aspirated, and later an extremely powerful twin-turbocharged flat-twelve engine for their Porsche 917 sports prototype; between 1969 and 1973. (en)
Porsche produced a series of normally-aspirated, and later an extremely powerful twin-turbocharged flat-twelve engine for their Porsche 917 sports prototype; between 1969 and 1973. (en)