Rolls-Royce Crecy, an alternative to the Griffon which was considered for the Spitfire. It was a Two-Stroke V12 of a similar scale to the Merlin, but could be fitted with an exhaust
THE ROLLS ROYCE V12 R MERLIN ENGINE
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ROYCE GRIFFON (65)
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Griffon: Chance to own rare successor of the Rolls Royce Merlin engine as three are auctioned | Daily Mail Online
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Rolls Royce " Griffon " Mk.61 64, 65, 66, 67, & 74 Aircraft Engine Repair and Recondition Manual AP 2234 K ,L & M Volume 2 - Aircraft Reports - Aircraft Manuals - Aircraft Helicopter Engines Propellers Blueprints Publications
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