This event for cars above 1500 cc
capacity was run of on the Phoenix Park circuit on July 6, 1931, this race being
desperately contested during intermittent thunderstorms. Earl Howe broke the lap record
twice in the first half hour with 91.8 m.p.h. but Sir Henry Birkin drove an Alfa Romeo to
victory at an average of 83.73 m.p.h. Earl Howe finishing sixth owing to supercharger
trouble. G. Campari took an Italian Maserati into second place with 82.56 m.p.h., and
Brian E. Lewis was third with a British Talbot car, at 79.92 m.p.h. In spite of the fierce
pace there were only two who did not finish.