 At the end of the 1965 season Tauranac was losing interest in this arrangement , reasoning that " it was just a matter of a lot of effort for no real interest because I didn 't get to go racing very much " and " I might as well get on with my main line business , which was selling production cars . " Although Brabham investigated using chassis from other manufacturers , the two men eventually agreed that Tauranac would have a greater interest in the Formula One team , which MRD eventually took over completely from BRO . This agreement was not reached until November 1965 . Repco delivered the first example of the new engine to the team 's headquarters in the United Kingdom in late 1965 , just weeks before the first Formula One race to the new regulations , the non @-@ championship South African Grand Prix on 1 January 1966 . Rather than build a new car in the limited time available , BRO pressed chassis number F1 @-@ 1 @-@ 1965 , the sole and unused BT19 , into service . 
