The Maserati Tipo V4 was a grand tourer-style torpedo car, designed, developed, and built by Italian manufacturer Maserati, between 1929 and 1932. It was also notably the first known racecar to be powered by a V16 engine.[6][7][8][9]
Working on a shoestring budget, as always, the Maserati brothers found a solution that would allow them to use as much of the existing design as possible by simply stacking two straight-eight engines on a common crankcase at a 22.5° angle. Of course, in reality, it was not quite as simple as it looked on paper but this was the avenue pursued by Maserati. The new engine/car was dubbed the Tipo V4 in reference to the V16 engine and four-litre displacement.
In order for the two engines to be fitted side-by-side with a central intake the head on the right side bank was reversed. This row of cylinders also ran in the opposite direction to allow for the two separate crankshafts to be connected through a single gear on the output shaft that was connected to the gearbox. Gears at the front of the V16 engine were used to drive the twin overhead camshafts.