 BT19 also competed in the final two races of the 1965 / 66 Tasman Series in Australia , which was run to the pre @-@ 1961 Formula One regulations , including an engine capacity limit of 2 @.@ 5 litres . Tasman racing was the original purpose of the Repco engine and Brabham 's involvement was supposed to promote the 2 @.@ 5 @-@ litre version . Frank Hallam , head of the Repco @-@ Brabham organisation responsible for designing and building the Repco engines , has said that the smaller version " never put out the power per litre that the 3 litre engine produced " , which itself was not a powerful unit . Fitted with the 2 @.@ 5 @-@ litre engine BT19 recorded one retirement and a third place in the series . 
