Other automobiles declaring to be initial are the Jensen Healey, introduced in 1972 which utilized 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 finished 1st in a Bugatti Type 13 with the 16-valve engine, averaging 91.96…
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