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Race Recap: Rolex 24 at Daytona was fast and feisty

Let the record show that victory at the 2015 Rolex 24 at Daytona went to the No. 02 Chip Ganassi Racing with Felix Sabates Target/Ford EcoBoost Riley DP driven by Verizon IndyCar drivers Scott Dixon and Tony Kanaan and NASCAR drivers Jamie McMurray and Kyle Larson. The winner did 740 laps to cover 2,634.3 miles in 24 hours and 57.667 seconds. That's a statement to this year's pace in spite of 18 cautions, two more than last year: the Michael Shank Racing Ligier got pole with a time of 1:39.194, slower than last year's pole time of 1:38.270; however, the winning car last year only did 695 laps. The fight for top honors was shaved to a four-car battle over the first third of the event. The No. 02 Ganassi car took the lead on the first lap, swapping it well into the night with the No. 01 Ganassi car, the No. 10 Wayne Taylor Racing Corvette DP, and the defending champion No. 5 Action Express Corvette DP, all of them staying within about 20 seconds of one another. The Action Express car had a fuel connector come loose and lost three laps getting towed back to the pits to have it reattached, but was back in the lead 18 hours in. The No. 01 Ganassi car dropped out with recurring clutch problems 22 hours in, retiring not long after. A race-within-the-race is where the concluding action happened, a seven minute, 30-second dash from the end of the last caution to the checkered flag. During the penultimate pit stops with an hour to go, Dixon was in second place followed Jordan Taylor in the Wayne Taylor Racing DP into the pits but beat him out, taking the lead. The Action Express car was in third. In the last pit stops of the race, Dixon gained even more time, getting a four-second advantage over Taylor. Then a full-course caution came out twenty minutes before the finish when a Prototype Challenge car hit the wall and caught fire, bunching up the field. That closed the pits, but the Wayne Taylor Racing car had to pit during that yellow because of a miscalculation of driver time. No driver can be behind the wheel for more than four hours in a six-hour period but Jordan Taylor was going to go over, so he came in to swap out for brother Ricky. That cost the team any chance of second place, since they took an additional drive-through penalty for entering closed pits. When the track went green again, Sebastien Bourdais in the Action Express car stayed all over Dixon for the final five laps but couldn't get around him.

FCA recalling 63k Jeeps, Vipers and Ram ProMaster City vans

Fiat Chrysler Automobiles has announced a pair of recalls cover nearly 63,000 vehicles. The bigger of the two actions covers manual-transmission-equipped vehicles from 2006, including the Jeep Liberty and Wrangler, as well as the Dodge Viper. FCA engineers uncovered that the clutch ignition interlock switches use a kind of wire that was part of a previous recall campaign. Because of this, the company said that affected vehicles may not start, although in rare cases, "if recommended starting procedures are not followed," the affected vehicles may lurch forward after turning the key. Those recommended starting procedures "include activating the parking brake, placing the shift lever in neutral and pressing the clutch pedal before turning the vehicle's ignition key." Recall number two affects the company's 2015 Ram ProMaster City cargo and passenger vans. Owners will need to report to dealers to have a piece of tape removed from the side-curtain airbags. The tape is added during assembly and in some cases, may not have been removed. That could prevent the airbags from deploying in the event of a crash. Just under 59,000 vehicles are included in the first recall, including 43,874 in the United States, 11,309 outside of North America, 2,944 in Canada and 706 in Mexico. The ProMaster City recall includes just over 3,900 vehicles. FCA claims it's unaware of any injuries, fatalities or accidents related to either recall and will perform repairs free of charge. Scroll down for the official press release on both campaigns. Related Video: Statement: Clutch Ignition Interlock Switch April 23, 2015 , Auburn Hills, Mich. - FCA US LLC is launching a voluntary recall of an estimated 43,874 older-model U.S.-market cars and SUVs equipped with manual transmissions. The Company will replace their clutch ignition interlock switches at no charge to customers. The action follows an investigation by FCA US engineers that discovered these vehicles are equipped with switches that contain a certain type of wire implicated in a previous campaign. The wire, which was temporarily substituted by a supplier for the specified material, may break. As a result, the vehicles may not start, and in rare cases – if recommended starting procedures are not followed – a vehicle may exhibit unintended movement when its ignition key is turned. FCA US is unaware of aware of any related injuries or accidents involving this population of vehicles.

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"