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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).

GM to trim Russian output, raise prices amid currency woes

General Motors is shutting down its factory in Russia's second largest city, St. Petersburg, from the middle of March until the middle of May as the country's currency, the ruble, continues to give economists fits. The ruble's value has plunged due not only to western sanctions, but a precipitous fall in oil prices. We knew these factors were already impacting the auto industry there, as Ford reported in its 2014 earnings statement, and now they're forcing GM to cut production at the factory, shown above, that is responsible for production of the Chevrolet Cruze and Opel Astra. Meanwhile, Automotive News is citing Russian outlet Kommersant as saying that GM has hiked its prices in the country by an average of 20 percent over the past two months. While a GM spokesman confirmed the St. Petersburg plant would be shut down for the two-month span reported by Kommersant and AN, he would not confirm the price increase. News Source: Automotive News - sub. req.Image Credit: Alexander Nikolayev / AFP / Getty Images Earnings/Financials Plants/Manufacturing Chevrolet GM Opel opel astra

2016 Chevy Malibu gets premium looks, hybrid model

The Chevrolet Malibu was once an automotive icon, but its modern reputation is one for underachievement. A new 2016 model seeks to restore the storied nameplate with improved styling, more interior room and a new hybrid version. It debuts Wednesday at the New York Auto Show. Put simply, "the goal was to put Chevrolet back in the midsize car segment," said John Cafaro, the brand's executive director of car design. In a crowded arena with 2.2 million sales up for grabs annually, Chevy has not been a player. Last year, the brand sold 188,519 Malibus, a six-percent decline from 2013, and fewer than half the number of Toyota Camrys and Honda Accords sold. Despite awards from J.D. Power and Associates and the Insurance Institute for Highway Safety, Chevy knew the Malibu needed a big change. New Skin, Lighter Bones The redesign has been in the works for at least three years. Although the Malibu is still based on GM's Epsilon 2 platform, the underpinnings are more derivative of the Impala than the outgoing model. The body structure makes greater use of high-strength steel, which helps reduce weight by 300 pounds. Size is more Impala-like as well, with 2.3 inches more overall length and a 3.6-inch wheelbase stretch contributing to greater interior space. A new skin covers the Malibu's lighter bones, and design language from the Impala gives its sibling sedan a fresher, more upscale appearance. To execute this premium appearance, Chevy turned to 25-year-old designer Jaymer Starbody, a four-year General Motors veteran and graduate from Detroit's College for Creative Studies. He described the new Malibu as having a "wheel-oriented" design, and the car looks poised to pounce from certain angles. Though the 2016 Malibu is the same width as before, designers stretched the creases and angles in the sheetmetal to create a flatter, sleeker appearance. The hood and cowl are lower, and the Malibu's face sparkles with LED running lamps on the top trim levels. Inside, the roomier cabin has a new center stack, satin chrome accents on the interior panel and a console storage area designed for mobile devices. Chevy MyLink with a seven-inch color touchscreen is standard on lower trims, and the top model upgrades to an eight-inch screen. Perforated leather seats and ambient lighting are also available options. The cabin was designed to look high-tech, but still remain easy to use, according to Chevy interior design director Crystal Windham.