How fast could a house go on the Bonneville Salt Flats? We don’t know. But a Ford F250 Super Duty is just about as big, and one just set a pair of diesel world speed records at Bonneville, including a thundering 182 mph run on biodiesel fuel.
The Ford F250 Super Duty Crew Cab was prepped by Hajek Motorsports with the help of Ford engineers, tweaking the 6.7-liter Power Stroke V-8 that in factory trim is rated at 400 horsepower and 800 lb.-ft. of torque. The truck, described by Ford as “mostly stock”, had changes made to the top-end components of the engine only, including a high-pressure fuel pump, fuel injectors and turbochargers for additional fuel flow. The compression ratio was modified as well.
Paul Niessen, Ford powertrain engineer involved with the project, said “… we increased the output of the engine by more than 50 percent over production with just a few changes.”
The same kind of “few changes” was applied to the chassis, too, the Ford F250 Super Duty riding noticeably closer to the salt than usual and with a front spoiler that completely keeps air from getting under the truck. Because bad things can happen on the salt, the truck also had a full roll cage and five-point harness.
The big Ford pickup ran in two classes, B Production Diesel Truck, where it set a new world record of 171.123 mph, topping the existing mark of 166.850 mph by a Duramax diesel GMC. “Production”, in racing terminology, usually means a lot of modifications can be made–and the trucks competing in this class are race vehicles with extensive aftermarket modifications. The Hajek Motorsports truck, driven Brent Hajek, was notable for being more production than most.
The truck was even faster running on B20 biodiesel. The F250 Super Duty shattered the existing 130.614 mph unlimited biodiesel land speed record setting the 182 mph mark.
Running the biofuel diesel at Bonneville wasn’t just the typical racer challenge. Hajek is a soybean and corn farmer from Oklahoma and the B20 in the fuel tank of the record-setting Ford F250 Super Duty was, of course, soybean based. Still, the next time we want to set a land speed record with for diesel engine and a house, we know who to call for fuel.