The Austin Mini Cooper and Morris Mini Cooper debuted in September 1961. [ 27 ] [ 73 ] [ 74 ] The 848 cc (51.7 cu in) engine from the Morris Mini-Minor was given a longer stroke to increase capacity to 997 cc (60.8 cu in) increasing power from 34 to 55 bhp (25 to 41 kW). [ 32 ] More @Wikipedia
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