Whakaotihia te rerenga e whai ake nei: I puta te Twin Cam i roto i te Formula 1 Cosworth Mk.XVI puka i te wa o te tauira i rere mai i te 1961-65. Ko tana putanga tuatahi i te 1963 South African Grand Prix i roto i te Brabham BT6 i whakahaerehia e David Prophet. I puta te pūkaha i roto i ngā motokā e rua i roto i te
Ko te 1964 British Grand Prix, ko tetahi ko Gerard Racing Cooper T73 i whakahaerehia e John Taylor me tetahi atu ko John Willment Automobiles Brabham BT10. Ko te mutunga anake i tuhia ko te tuaiwa i te 1965 South African Grand Prix, ano i te Willment Brabham.