 The BT19 was created by Australian designer Ron Tauranac for the Brabham Racing Organisation ( BRO ) to use in the 1965 season of the Formula One motor racing World Championship . The BT19 , and its contemporary the Lotus 39 , were built to use the new <unk> flat @-@ 16 engine from Coventry Climax . Only one example of the BT19 design was built , and it never raced in its original form . Climax abandoned the <unk> 's development before the end of 1965 , their existing <unk> V8 engines proving powerful enough to propel Jim Clark 's Lotus 33 to seven wins and the drivers ' championship . 
