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Recharge Wrap-up: GM, LG Chevy Bolt collaboration, Honda Energy Star plants

Green Car Reports details the relationship between GM and LG in the development and production of the Chevy Bolt. The unique relationship between the two companies began in 2008, and now sees LG producing a multitude of systems for the Bolt, many of which were designed by or with GM. LG's involvement in the Bolt has gone so deep as "defining what will this vehicle be, everything from how we are going to package it, what size it should be, what kind of performance it should have," according to Pam Fletcher, GM's Executive chief engineer for electrified vehicles. Forgoing the traditional automotive relationship for a more collaborative one doesn't just save money, but it also gives GM access to LG's suite of technologies and manufacturing capabilities. Read more at Green Car Congress. The EPA has awarded three Honda factories with Energy Star certification. The automaker's assembly plants in Marysville and East Liberty, Ohio have now earned Energy Star certification ten consecutive years. The Marysville plant added LED lighting, hydrogen-powered tow motors and forklifts, high efficiency HVAC and direct-fired water boilers. The East Liberty facility added new LED lighting and replaced a large water heater with a high-efficiency one. Honda's newest US plant, Honda Manufacturing of Indiana, installed LED lighting and used energy efficient features in its recent expansion. Honda also cites a culture of energy-mindedness – for every associate – for its success. "When everyone involved considers energy efficiency and how they can help the environment, results improve," says Karen Heyob, Honda's sustainability boss in North America. Read more from Honda. The student-led Associated Students of the University of Montana (ASUM) Transportation has ordered two Proterra electric buses. The 40-foot Catalyst Fast Charge buses will serve the campus, and will recharge with a semi-autonomous fast charger. "As part of our ongoing effort to innovate service, align with student advocacy and reduce our carbon footprint, we take great pride in our decision to go electric," says ASUM Office of Transportation Director Jordan Hess. "We hope this encourages – and challenges – other universities to seriously consider the economic and environmental benefits of zero-emission buses." Read more in the press release below. First Student-led Transit Agency in the U.S.

Top horsepower-per-dollar cars in 2017

Bang for the buck. That quasi-scientific statistic is bandied about by motor heads everywhere from classrooms to barrooms, though the truth of the matter is that it's exceedingly complex to measure. A fair performance-per-dollar index would include something like cross-referencing MSRP (Manufacturers Suggested Retail Price) with point-to-point times on a track or driving route, which is obviously hard to do comprehensively. But, for the sheer joy of talking about cars and playing with a big spreadsheet, there's always the horsepower-per-dollar index, which is more straightforward, albeit hilariously flawed. There are vagaries even with this simple formula, of course: MSRP for vehicles can change at a moment's notice, to say nothing of the bottom-line shifting that happens with local deals or showroom negotiation. For this list we're running with the straight MSRP wherever possible, and as recently reported as we can get it. All the vehicles on this list are 2017 models, and all trims are reported where the lowest price and differing power levels intersect. Some choices were made for personal preference and some for sanity, avoiding things like all 48 trim levels of the Ford Transit, all with the same horsepower). If this list were a simple top ten, or even a top fifty, you'd be bored to tears with all the red, white and blue that is represented. Following perfectly with conventional wisdom, American cars really do lead the world where hp/$ is concerned. So, for the sake of variety (and the sheer joy of seeing a minivan 'win' one round of this thing) I've sorted out some top five and bottom five lists for broad power categories. Let's dive in. Less Than 100 Horsepower Okay, okay, this is hardly a category we'll grant you. But we've often tried to click off all the sub-100-hp cars on sale in the US, and making this list gave us an excuse. It also illustrates that none of these smallish vehicles bring cheap horsepower to the table - for that you'll need a motorcycle. The segment-leading Chevy Spark (above) asks just over $139 for each hp, and that Smart Fortwo Electric Drive has hp on sale for about the same price as its very distant family cousin, the Mercedes-Benz SL65 AMG (insert your favorite Smart joke here... we know you want to).

Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.