1978 Chevrolet G20 Sportvan Standard Passenger Van 3-door 5.7l on 2040-cars

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'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).

Sinkhole Opens Up In National Corvette Museum, Swallows Eight Cars

More cars are being moved inside the National Corvette Museum in Bowling Green, Ky. to avoid falling down the same sinkhole that swallowed eight classic sports cars early this morning, Autoblog reported. Museum officials said the hole was discovered when motion sensors activated around 5:45 a.m. The rescue mission can be viewed on the museum's live feed cameras, which weren't working after the sinkhole emerged. A 1993 ZR-1 Spyder and a 2009 ZR1 "Blue Devil," both on loan from General Motors, were among the cars that fell into the sinkhole. The museum owned the other affected Corvettes, which included a 1963 Corvette, a 1984 PPG Pace Car and the 1 millionth Corvette ever produced. The state of the cars at the bottom of the hole isn't known, but trial lawyer and sinkhole expert Ted Corless said the cars may be a total loss for the museum and GM. "Most states, including Kentucky, exclude damage caused by sinkhole activity," he said. "There will be, in all likelihood, a claim made, but a lot of policies would specifically exclude these kinds of damages." Corless has 15 years experience dealing with sinkholes. He said that typically neither the building, nor the cars themselves are protected under their insurance policies. "I would have to say, more likely then not, they're going to have an uninsured loss measured in the hundreds of thousands of dollars." The museum is closed Wednesday while a structural engineer assesses the damage. Related Gallery 2014 Chevrolet Corvette Stingray Test Drive View 9 Photos Related Gallery 2014 Chevrolet Corvette Stingray Test Drive View 9 Photos Weird Car News Chevrolet GM corvette

So, how do you actually pronounce that automaker's name?

You probably have that friend who always says Porsche wrong, or maybe it's someone who keeps reminding you it's actually two syllables. Whichever side of the pronunciation debate you fall on, you'll find someone to root for in the video above. And before you ask, this was all the video team's idea. So don't get mad at me for being the voice of reason. BMW Chevrolet Hyundai Nissan Rolls-Royce Videos Original Video nissan qashqai