May 19, 2013, 2:07 PM EST
Charlie Kimball (pictured), Dario Franchitti, Josef Newgarden and Graham Rahal will be forced to suffer 10-spot grid penalties for the first race of the next IZOD IndyCar Series event — the Chevrolet Dual in Detroit doubleheader on June 1 — due to unapproved engine changes this weekend at the Indianapolis Motor Speedway.
Chip Ganassi Racing pilots Kimball and Franchitti swapped Hondas before yesterday’s Pole Day qualifying, while Newgarden (Sarah Fisher Hartman Racing) and Rahal (Rahal Letterman Lanigan Racing) switched their own Hondas before this morning’s Bump Day activities. Newgarden and Rahal are currently the two fastest second-day qualifiers, with Newgarden at 225.731 miles per hour and Rahal at 225.007 miles per hour.
Per IndyCar rules, full-time entrants can only use five fresh engines from the mid-March Open Test at Barber Motorsports Park to the season finale in mid-October at Auto Club Speedway. Entrants are only allowed to change powerplants once they meet a mileage threshold of 2,000 miles or receive IndyCar’s approval.
Newgarden and Rahal are each now on their third engines of the season, while Kimball and Franchitti are both on their second engines.
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