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Fernando Alonso sputters in his Indy test

INDIANAPOLIS — Helio Castroneves and Fernando Alonso kept waiting around Wednesday. Now both international stars have some unfinished business to take care before qualifying for this year's Indianapolis 500. After enduring a rain delay of more than four hours then watching IndyCar regulars turn laps at Indianapolis Motor Speedway for two more hours, Castroneves and Alonso finally made it onto the track — but couldn't quite complete their refresher course. "Happy to be back here because this place is great," Alonso said after posting a fast lap of 218.690 mph — the slowest of the nine-driver evening session. "We were slow because the weather and some of the decisions people made on running time and things like that." He faced a bevy of problems in his first trip back to Indy since an impressive rookie performance in 2017. The rain delay forced organizers into rescheduling the one-day test, moving the rookie and refresher driver time from midday to the evening, cutting a significant amount of practice time for Alonso and the others. And when the green flag finally waved, Alonso's No. 66 car stalled in the warmup lane forcing the two-time Formula One champion from Spain to be towed back to pit lane where his crew worked feverishly to fix an electrical problem while sat in the cockpit. Eventually, he did get out and passed the first of two refresher phases. He'll have to wait until opening practice of the 500 on May 14 to pass the second. "It was frustrating for everyone because it was a brand new chassis and a brand new car, so we expected to run a lot," said Alonso, who drives for McLaren Racing. "If we could have had this at midday, you could work on your issues in the afternoon and then go out again." To put his day in perspective, Takuma Sato, the 2017 Indy winner from Japan, posted the fastest lap of the day at 226.993 mph and Colton Herta was the fastest rookie at 226.108. Castroneves, as usual, was good right from the start and posted a fast lap of 225.565. The three-time Indianapolis 500 winner looked smooth and fast on his favorite track and wasted no time passing the first phase. That much should have been expected from the popular Brazilian, who has recorded seven top-three finishes in 18 Indy starts and will make his season debut May 11 in the IndyCar Grand Prix. The weather and yellow flags prevented four of the five veterans — Castroneves, Alonso, Oriol Servia and JR Hildebrand — from passing phase two. Only Indy native Conor Daly made it.

'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

Chevy, Kid Rock in Confederate flag row with civil rights group

Two of Detroit's own are ensnared in controversy today. In an interview with Fox News' Megyn Kelly, mulleted musician Kid Rock told those protesting the Confederate Battle Flag to "kiss my ass." Now, Chevrolet, which is sponsoring Rock's summer concert tour, is under fire for its support. "We are committed to our sponsorship of Kid Rock's summer tour and are confident that he will provide his fans, many of whom are proud Chevrolet owners, with a spectacular concert experience that celebrates American Freedom," a Chevy spokesperson told The Detroit Free Press last week. The company also uses the Kid Rock anthem Born Free in its pickup truck advertising. The company's position is not sitting well with the Detroit chapter of the National Action Network, though, which has called on GM to pull its support for the embattled artist. "It's obvious to us that, by supporting [Rock], while he's making inflammatory statements, General Motors becomes an accomplice if they allow him their support to stand behind his statements," the Rev. Charles Williams II, NAN's Detroit chapter director, told the Freep. As controversial as Rock's comments are, it's not entirely clear when the last time he actually waved that flag was. The Freep reports that several concertgoers don't recall seeing the flag during his most recent tour, or even over the last few years of concerts. In a 2002 interview with the paper, Rock, real name Robert Ritchie, said that the flag had been used as a symbol of southern rock and a rebel spirit, saying: "It's not about hatred or being a racist. I like Southern rock music, and a lot of people died under that flag for beliefs they had, right or wrong. But it stands for rebel, and my love of Southern rock." Related Video: