When you think “four cylinders,” you think “wide,” but in 1923 two young Italian engineering graduates, Carlo Giannini and Piero Remor, drew their very first such four with nothing on the ends of its crankshaft but its outer main bearings. It was narrow! No ignition on one end and primary drive on the other to make it even wider. The ignition was behind the cylinders, atop the gearbox. The primary drive—by chain in their first design—was at the center, next to the central flywheel. The drive to that engine’s single overhead cam (SOHC) was by a shaft and bevel gears, not located between cylinders, where it would add width, but ahead of them.