Britain's fastest express uses Harper Castings
A January 1961 advert from John Harper & Company Limited. It notes their one piece cast rocker covers were used on the Bristol Siddeley Maybach diesel engines which powered the D800 class locos working train such as the Cornish Riviera Express and Bristolian.
This advert appears in the following categories: Traction: Class 42/3 ; Supplier: Harper Castings ; Component: Alloy Castings/Metals Misc Parts