position and Jim Clark taking the win. Teething problems prevented Clark mounting a serious title challenge but the Lotus-Ford was undoubtedly the class of the field. In the DFV was made available to all teams, and with its enviable power (about ) and relatively low price the DFV quickly began to fill up the grid. This spawned a plethora of small, mainly English-based low-budget teams throughout the 1970s, with the DFV last racing in a Tyrrell in . The DFV's last race was the Austrian Grand Prix, held on the fast Österreichring circuit, where driver Martin Brundle failed to qualify the underpowered car. By 1985 the DFV, now upgraded as the DFY, was rated at around , though it was up against turbocharged cars and had generally become uncompetitive. The DFV's last win was at the 1983 Detroit Grand Prix with Italian driver Michele Alboreto piloting his Tyrrell 011 to a surprise, but popular victory. The final podium finish by a DFV powered car came a year later in Detroit when Brundle drove his Tyrrell 012 to second place (Tyrrell were later disqualified from the season for technical infringements). V6 Turbo It was at the 1984 British Grand Prix at Brands Hatch that Duckworth and Ford finally agreed to build a turbo powered engine to replace the DFV. Initially an old Straight-4 sportscar engine was tested, but it proved to be very unreliable and unable to produce the necessary power required to be competitive in Formula One. Duckworth had wanted to use the 4 cyl engine as he believed it to be more compact and had better fuel economy than a V6 engine, though project manager Mike Baldwin had been against that idea from the start. After four of the 4 cyl engines had been destroyed during a 4-month development period, and finding that with a turbo increasing power the engine had formed an incurable vibration at the crankshaft, eventually it was decided that an all-new V6 engine would be built, developed and tested throughout 1985. The new , 120° Ford-Cosworth TEC V6 turbo engine (internally dubbed the GBA), made its debut at the 1986 San Marino Grand Prix in the Team Haas (USA) Ltd entered Lola THL2, the car driven by World Champion Alan Jones. Its development was rushed, and while the engine proved somewhat reliable, it was well down on power compared to the other turbo charged engines