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August 23, 2009

ACO reveals 2010 Le Mans rules, diesels get more weight, less air

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The Automobile Club de l’Ouest (ACO), which sanctions the 24 Hours of Le Mans and provides the basis for the rules used in the American Le Mans Series, has just published its rules changes for 2010. The updates for next year are mainly targeted at tightening competition while maintaining series stability. Because sports car racing, unlike many other forms, allows an array of very different machines with different powertrains, the rules have to provide some means of equivalency to provide an even playing field.

To that end, the ACO is again making some adjustments to the rules for the diesel-powered cars that have dominated Le Mans for the past four years. Next year, the diesels from Peugeot and Audi (and anyone else who might opt to run one) will have to carry an extra 30 kg of ballast relative to gas-powered cars, bringing their minimum weight to 930 kg. Since power output is in part a function of how much air gets into the engine, the air restrictors for diesels will be reduced 2.1 percent in size and maximum turbo boost is being cut from 2.75 BAR to 2.59 BAR. Conversely, gas engines get 5 percent larger restrictors. The rules don’t specifically say anything about hybrids at this point because ACO is still letting those cars run unclassified until some performance data is accumulated.

[Source: Automobile Club de l’Ouest]

Continue reading ACO reveals 2010 Le Mans rules, diesels get more weight, less air

ACO reveals 2010 Le Mans rules, diesels get more weight, less air originally appeared on Autoblog Green on Sun, 23 Aug 2009 12:02:00 EST. Please see our terms for use of feeds.

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