Toyota to scale back horsepower this weekend at Pocono

So we won't see a dominating run by the Gibbs cars? or will we?

Toyota Racing Development likely will scale back the horsepower in its engines for this weekend’s race at Pocono Raceway as it tries to determine the source of valve spring issues that have felled three engines in the last two weeks.

Kyle Busch failed to finish the Sprint Cup race at Charlotte two weeks ago while Matt Kenseth and Martin Truex Jr. didn’t get to the end Sunday at Dover.

Those failures, combined with two in the season-opening Daytona 500 and then one to Clint Bowyer in March at California, have soured a season in which Toyota has eight poles and five victories in the first 13 races between Joe Gibbs Racing and Michael Waltrip Racing.

“We know our drivers are capable, we know the cars are as good or better than any other cars in the garage and we believe our engines to be as good or better,” said TRD Senior Vice President David Wilson.

“So we can afford to back it down a notch to make sure that we have our durability.”

The issues have primarily been valve train related, and that typically is the most fragile part of a Cup engine.

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