29 Dec '17, 9pm

IMSA sets Balance of Performance ahead of Rolex 24 test

IMSA sets Balance of Performance ahead of Rolex 24 test

The Cadillac DPi.V-R, which features a smaller 5.5-liter V8 engine, has seen the biggest change, with a 10 kg minimum weight increase along with a 1.8 mm (x2) larger air restrictor. Wayne Taylor Racing took part in the recent IMSA-sanctioned test with the updated powerplant, which was sent to NASCAR’s R&D facility in Concord N.C. for further evaluation. Both the Nissan Onroak DPi and the new-for-2018 Acura ARX-05 will also now run at 940 kg, compared to 930 kg for the LMP2-spec machinery and the Mazda RT24-P. No power-related adjustments have been made to either of the turbocharged Nissan and Mazda powerplants, although IMSA has implemented aero-related changes for some P class cars. Initial performance levels for both the Acura DPi and BMW M8 GTE, the two all-new cars for next year, have been established, with the BMW running at a 1,250 kg minimum weight and with a revise...

Full article: http://autoweek.com/article/imsa/imsa-sets-balance-perfor...

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