The B-25 was powered by two Wright R-2600 Cyclone 14 (also called Twin Cyclone), a radial engine developed by Curtiss-Wright and widely used in aircraft in the 1930s and 1940s. 

In 2014 we got the information that there were two R-2600 available in Ireland. Those two engines belonged to the Catalina G-BLSC/VR-BPS/VP-BPS. This Wright Cyclone-powered ‘Super Cat’ was damaged beyond economic repair in an accident on Southampton Water. Eventually the dismantled airframe travelled to Dublin in the Republic of Ireland where it was stored at Weston airfield. The new owner’s intention was that it would form part of a museum but this project never saw fruition and the poor old Catalina ended up bulldozed into scrap. Hopefully the engines and an bunch of parts was saved and the new owner was agreeing to sell them to us for a very fair price knowing it will be used for the restauration of a B-25. 
The engines, still on their Super Catalina mountings, have been shipped to the workshop in august 2014. They are currently stored.

Above: The R-2600  in Ireland.
Under: the same engines arriving at BAPA's workshop