Porsche Air-Cooled Turbos 1974-1996

Racing improves the breed, goes the saying; no marque has been as steadfastly diligent in this pursuit than Porshe. Porsche applied turbocharging to its racing cars in 1972 and, within a year, this technology had crossed over into its production cars: the first road-going 911 Turbo was unveiled at the Frankfurt Motor Show in 1973. Johnny Tipler tells the story of the air-cooled turbocharged 911s, starting with the 934 and 935 race cars that fostered the Type 930 in 1974. The 930 accounted f...