Originally Posted by puss
Rolls Royce 'Merlin'

...
WW2 aircraft engine ... a legend in its own right and fitted to many aircraft including fighter and bombers (yes the Spitfire

) ...
... a 27 litre (not a typo

) V12 ... good for a realiable 1000+ horsepower (in the '40s). Full power could not be selected by flight crew (in fighters) when taking off because the torque of the engine would flip the aircraft over