Cosworth FVA series

The Cosworth FVA series is a family of 1.6 litre, four cylinder, four valve Formula 2 racing engines that Cosworth introduced in 1966, the name standing for four valve type A. It was built on the Ford Cortina Crossflow block and developed under the same contract as the DFV, with 16 valves operated by twin overhead camshafts driven through a train of nine gears, Lucas mechanical fuel injection and an alternator driven directly by the exhaust cam. It made 225 bhp at 9,000 rpm, dominated the category until 1971 and, in 1.8 litre form as the FVC, was also used in sports car racing. Its cylinder head pioneered many of Keith Duckworth's ideas for the DFV, a mule for the eight cylinder engine called the FVB was built, and the larger FVD of 1975 displaced 1,975 cc on the aluminium block developed for the BDG, making 275 bhp for endurance racing.