Rolls-Royce Merlin prey, Rolls-Royce named the engine the "Merlin" after a small, Northern Hemisphere falcon ("Falco columbarius"). Two more Rolls-Royce engines developed just prior to the war were added to the company's range. The Rolls-Royce Peregrine was an updated, supercharged development of their V-12 Kestrel design, while the 42-litre (2,560 cu in) Rolls-Royce Vulture used four Kestrel-sized cylinder blocks fitted to a single crankcase and driving a common crankshaft, forming an X-24 layout. This was to be used in larger aircraft such as the Avro Manchester. Although the Peregrine appeared to be a satisfactory design, it was never allowed to mature since
Rolls-Royce V8 engine later taken back by the factory and scrapped. The other two were used for factory transport or display purposes. Rolls ordered three more chassis for delivery in 1906 but there is no evidence these were ever made. No example of a 1905 V-8 car or engine is known to survive. Although the 1905 V-8 cannot be judged a success, lessons learned from the engine were used in subsequent Rolls-Royce engine designs. Having used straight six, straight eight and V-12 engines in the interim period, the need for another new engine was recognised in the early 1950s. Development of a totally