CentralNotice From Wikipedia, the free encyclopedia Jump to: navigation , search This article does not cite any references or sources . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2007) A V24 engine is a V engine with 24 cylinders , suitable only for very large trucks or locomotives . M.C.72 aircraft engine Unlike smaller V16 and V20 engines, very few V24s were originally designed with 24 cylinders. The majority of these engines are formed by coupling multiple smaller engines together. For example, a very large V24, the AS.6 , engine was built by Fiat in the early 1930s as a powerplant for the competition aeroplane Macchi M.C.72 . This engine was in reality formed by mounting two Fiat AS.5 V12s, one behind the other, obtaining a total displacement of over 50 litre...