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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).

Retro Wrong: MotorWeek shares first unaired pilot episode

MotorWeek is an automotive institution in the United States. We all have to get our start somewhere though, and for the latest entry in the Retro Review series, the show is releasing its unaired pilot for the first time. Even today, the program isn't necessarily the most exciting thing on TV, but the modern incarnation looks like Top Gear compared to this original, very monotone attempt. The cars on display are more interesting from a historical aspect than actually being behind the wheel. MotorWeek puts the Chevrolet Citation and Ford Fairmont head to head. If you want to see progress in the auto industry, look here. The Fairmont manages a rousing 85 horsepower from a 3.3-liter inline six, and the Citation does only a little better with a 115-hp, 2.8-liter V6. The other highlight comes at the end when John Davis talks about the cars of the future. These include the upcoming introduction of the Ford Escort in the US and the mention of a possible gasoline-electric hybrid from General Motors. Given this pilot, it's amazing MotorWeek ever got the green light. However, if you're a fan of auto history, seeing the news from the past is always fascinating. News Source: MotorWeek via YouTube Chevrolet Ford Hatchback Classics Videos Sedan

Chevy gives Camaro Red, Black Accents for SEMA

Just the other day, Chevy announced a series of modified show cars it's planning to bring to SEMA this year. Now it has revealed full details on what could prove the most enticing among them in the form of a pair of Camaros. These new Red Accent and Black Accent editions are based on the new, sixth-generation 2016 Camaro SS. The former starts out as a Camaro SS convertible, done up in silver with red trim inside and out. It's got a leather interior, custom grille, hash-mark fender graphics, blacked-out bowtie badge, and 20-inch alloys. Even the engine is visually enhanced with a red cover. While it was at it, Chevy also dropped the suspension and fitted a new air intake and Brembo front brakes. Joining it is the Black Accent concept, based on a red Camaro SS coupe. As its name suggests, it's got a blacked-out aero kit, bowtie badge, and fuel cover, along with darkened tailllamps and satin black stripes. It also gets a black leather interior and its own set of 20-inch wheels, along with the aforementioned lowering kit, Brembo front brakes, air intake, and red engine cover. The Accent concepts are designed to showcase the extent of the accessories Chevy is offering for the new Camaro, and will be showcased at SEMA alongside modified versions of the Spark, Trax, Malibu, Colorado, and Sierra. Feel free to scope out the gallery above and the details in the press release below. Related Video: 2016 Camaro SS Concepts Designed to Inspire Red, Black Accent cars showcase new accessories, preview production packages DETROIT – Chevrolet introduced two customized 2016 Camaro SS concepts that illustrate the possibilities enabled by the new portfolio of Gen Six Camaro accessories and performance parts. Dubbed Red Accent and Black Accent for their respective design themes, each uses components Chevrolet will offer during the first model year of the new Camaro. "These are great-looking examples of what customers can do to personalize their new Gen Six Camaro," said Roger McCormack, director, Accessories & Performance Parts Marketing. "This will be the largest-ever portfolio of Camaro accessories and performance parts.