1967 Mercury Comet Base Sedan 4-door 4.7l on 2040-cars

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Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

Car Stories: Owning the SHO station wagon that could've been

A little over a year ago, I bought what could be the most interesting car I will ever own. It was a 1987 Mercury Sable LS station wagon. Don't worry – there's much more to this story. I've always had a soft spot for wagons, and I still remember just how revolutionary the Ford Taurus and Mercury Sable were back in the mid-1980s. As a teenager, I fell especially hard for the 220-horsepower 1989 Ford Taurus SHO – so much so that I'd go on to own a dozen over the next 20 years. And like many other quirky enthusiasts, I always wondered what a SHO station wagon would be like. That changed last year when I bought the aforementioned Sable LS wagon, festooned with the high-revving DOHC 3.0-liter V6 engine and five-speed manual transmission from a 1989 Taurus SHO. In addition, the wagon had SHO front seats, a SHO center console, and the 140-mph instrument cluster with mileage that matched the engine. When I bought it, that number was just under 60,000 – barely broken in for the overachieving Yamaha-sourced mill. The engine and transmission weren't the only upgrades. It wore dual-piston PBR brakes with the choice Eibach/Tokico suspension combo in front. The rear featured SHO disc brakes with MOOG cargo coils and Tokico shocks, resulting in a wagon that handled ridiculously well while still retaining a decent level of comfort and five-door functionality. I could attack the local switchbacks while rowing gears to a 7,000-rpm soundtrack just as easily as loading up on lumber at the hardware store. Over time I added a front tower brace to stiffen things a bit as well as a bigger, 73-mm mass airflow sensor for better breathing, and I sourced some inexpensive 2004 Taurus 16-inch five-spoke wheels, refinished in gunmetal to match the two-tone white/gunmetal finish on the car. That, along with some minor paint and body work, had me winning trophies at every car show in town. And yet, what I loved most about the car wasn't its looks or performance, but rather its history. And here's where things also get a little philosophical, because I absolutely, positively love old used cars. Don't get me wrong – new cars are great. Designers can sculpt a timeless automotive shape, and engineers can construct systems and subsystems to create an exquisite chassis with superb handling and plenty of horsepower. But it's the age and mileage that turn machines into something more than the sum of their parts.

Mustang, Camaro, Challenger gallop onto USPS pony car postage stamp set

Some of America's most iconic cars are about to be immortalized on postage stamps. A new set by the U.S. Postal Service will celebrate the the golden era of pony cars, featuring five classic examples of Detroit iron. Each one is beautifully illustrated in oil-on-canvas style, with subjects in motion and sunlight glinting off the chrome, and would add a nice touch to any first-class letter. The pony car segment was all about (relatively) small, sporty alternatives to the full-size land yachts of the 1960s. They typically came equipped with 6-cylinder engines or small-block V8s. The category was named after the Ford Mustang, hence  the name. Some, though, argue that the Plymouth Barracuda, which was launched a couple of weeks before the Mustang, is the first. Luckily, the Falcon-based Mustang's distinct styling generated a sales sensation, or we might be calling them fish cars. Appropriately, one of the featured cars is a Mustang. But it's not just any Mustang. The 1969 Boss 302, seen here resplendent in Bright Yellow, was created for the hotly-contested SCCA Trans-Am racing series. One of its main rivals would have been the 1969 Chevy Camaro Z/28, also created specifically for the series, and is included in the set in Fathom Green. Representing Auburn Hills in the set is a 1970 Dodge Challenger R/T in Plum Crazy, while Southfield's American Motors gets a nod with an AMC Javelin in Big Bad Orange. The Mustang's platform cousin, a 1967 Mercury Cougar XR-7, is portrayed in a gorgeous Burgundy Poly that almost looks incomplete without Neko Case on the hood. It's not the first time the USPS has honored America's rich car culture on its stamps. In 2013, it issues a series of muscle car stamps with the help of Richard Petty. That set featured a 1966 Pontiac GTO, 1967 Shelby GT-500, 1970 Chevelle SS, 1970 Plymouth Hemi ’Cuda and, of course, a 1969 Dodge Charger Daytona. Another set in 2016 featured classic pickup trucks. Going further back, a 2008 release had chroed and finned automobiles of the 1950s and a 2005 release featured sporty American cars of the same era. The pony car stamps will debut on August 25 at the Great American Stamp Show in Sacramento, California in partnership with the American Philatelic Society. The public is free to attend the dedication ceremony, but you must RSVP first. After that, they will be available at local post offices and on line at the USPS store.