CIÉ 121 Class
…tons) and had a maximum speed of 123 km/h (76 mph). Numbers B126–B129 were later rebuilt with an EMD 8-645E engine of 1,100 hp (820 kW); as used in the 181 Class locomotives. The engine blocks were originally recycled from withdrawn rebuilt 201 Class locomotives, but in their later years much swapping of engines…