History



DOHC straight-8 in a 1933 Bugatti Type 59 Grand Prix racer
Among the early pioneers of DOHC were Isotta Fraschini's Giustino Cattaneo, Austro-Daimler's Ferdinand Porsche Stephen Tomczak (in the Prinz Heinrich), and W. O. Bentley (in 1919); Sunbeam built small numbers between 1921 and 1923.[2] The first DOHC engines were two- or four-valve per cylinder designs from companies like Fiat (1912), Peugeot Grand Prix (1913, 4 valve), Alfa Romeo GP (1914, 4 valve) and 6C (1925), Maserati Tipo 26 (1926), Bugatti Type 51 (1931), and Audi[clarify]. Most Ferraris used two-valve DOHC engines as well.Jaguar's XK6 DOHC engine was displayed in the Jaguar XK120 at the London Motor Show in 1948 and used across the whole Jaguar range through the late 1940s, 1950 and 1960s.

******Toyota 2000GT high-performance grand touring sports car, which first appeared as a prototype at the 1965 Tokyo Motor Show and was introduced as a production model in 1967. *****