The Fiat 804 racing car recycled an old engine

The Fiat 804 is a racing automobile developed in 1922 by the Italian manufacturer to comply with a new 2-liter engine displacement limit imposed in Grand Prix. Its six-cylinder engine was directly derived from the Type 402 of the Fiat 802, from which two cylinders were simply removed while reducing the stroke by 20 mm. This design allowed the company to prevail the same year by winning the Automobile Club de France Grand Prix and the Italian Grand Prix.