Two locomotives, numbers 73211 and 73104, are to be completely rebuilt by Railway Vehicle Engineering Ltd (RVEL) of Derby. The 600 hp diesel engine will be removed and replaced by a pair of Cummins QSK19 750 hp diesel engines, increasing the total diesel horsepower to 1,500. The locomotives will be used by Network Rail and will be classified 73/3. The Cummins QSK19 is the same engine used in the Class 220 and Class 221 diesel multiple units.
Read more about this topic: British Rail Class 73
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