Complex sentence: Inspired by a Peugeot Grand Prix engine which had been serviced in his shop by Fred Offenhauser in 1914, it had 4 cylinders, double overhead camshafts and 4 valves per cylinder, and powered Jimmy Murphy's Duesenberg to victory in the 1922 Indianapolis 500.
Split into simpler sentences: Inspired by a Peugeot Grand Prix engine which had been serviced in his shop by Fred Offenhauser in 1914, it had 4 cylinders, double overhead camshafts and 4 valves per cylinder. This engine powered Jimmy Murphy's Duesenberg to victory in the 1922 Indianapolis 500.