working life. Motor failures occurred within months of the various classes being introduced. The WAGR Crossleys underwent over 600 modifications in their service life. The CIE 001 Class were re-motored with EMD engines between 1968 and 1971 and the CIE 201 Class between 1969 and 1972. Patents Crossley Brothers obtained numerous patents for improvements to internal combustion engines. One example is a waste heat recovery unit, British patent no. 305 of 1915. See also Crossley Motors Gas engine Diesel engine References Eyre, Michael; Heaps, Chris; and Townsin, Alan: Crossley; OPC 2002; Notes External links Crossley Brothers Crossley Motors website Diesel engine manufacturers Marine engine manufacturers Rolls-Royce Defunct companies based in Manchester Manufacturing companies based in Manchester Former defence companies of the United Kingdom Engine manufacturers of the United Kingdom