Turbochargers on CM5
Yes the turbochargers were removed on downgrading to service and tour coach duties, after the 36ft CM6's were introduced from the mid-sixties. As for other detail differences, there has built up an aura of mystique over just what was changed on which coach and when. An attempt was made to standardise the specification on de-classification from motorway work, but never succeeded. As the works were not undertaken by the Central works but by individual Midland Red garages, it becomes easier to understand why.
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