New engine regs confirmed

The Indy Racing League has confirmed that it will require three-litre engines to be used from the Indianapolis 500 onwards in the IndyCar Series next year

New engine regs confirmed

The delayed introduction of the new regulations means that the opening three rounds will be run with 3.5-litre engines, although a 3-inch by 12-inch slot will be cut into the airbox and engine cover for these races to reduce horsepower.

The engines will still run to the current limit of 10,300 rpm, but the reduction in capacity should cut power output by up to 100 horsepower, which could reduce speeds by up to 10 mph. Engine manufacturers will be able to modify their current powerplants to meet the new regulations, rather than building all new units.

"We have been gathering data and studying ways to slow the cars down without compromising the highly competitive racing we have in the IndyCar Series," said Brian Barnhart, the IRL's senior vice-president of communications. "We believe these changes to the cars and engines will accomplish that goal."

The IRL has also announced that, from next year, cars will be equipped with update kits including road-course radiators and sidepods. These will increase drag on the cars, also helping to produce slower speeds.

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