The most powerful version of the Centaurus was intended for the Blackburn Beverley transport aircraft. Using direct fuel injection, it achieved a remarkable 3,220 hp but was never fitted.[3] A projected enlarged capacity version of the Centaurus was designed by Sir Roy Fedden; cylinders were produced for this engine but it was never built. Known as the Bristol Orion (a name used previously for a variant of the Jupiter engine, and later re-used for a turboprop) this development was also a two-row, 18 cylinder sleeve valve engine, with the displacement increased to 4,142 cubic inches (67.9 l)[4] (6.25x7.5), nearly as large as the American Wasp Major four-row, 28-cylinder radial, the largest displacement aviation radial engine ever placed in quantity production.