Other autos professing to be first are the Jensen Healey, released in 1972 which employed a Lotus 907 belt-driven DOHC 16-valve 2-liter straight-4 making 140 bhp (54.6 kW/liter, 1.20 bhp/cid). In the 1920 Voiturettes Grand Prix at Le Mans driver Ernest Friderich concluded initially in a Bugatti Type thirteen with the 16-valve engine, averaging 91.96…
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