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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.

Junkyard Gem: 1979 Mercury Marquis 2-Door Sedan

As the creator of the now-much-overused term "Malaise Era" (which I say started in 1973 and ended in 1983, full stop), I have a certain affection for the big two-door Detroit cars of the late 1970s. When such a car is built on the very first model year of Ford's long-lived Panther platform and I find one in a junkyard, I must document it. The 1979 Mercury Marquis is such a car, and this one was found in a San Francisco Bay Area self-service yard last month. Since Ford built the Grand Marquis all the way through the demise of the Panther platform— and Mercury itself— in 2011, it's easy for us to forget that the model name started out as just the plain old Marquis, back in the 1967 model year, with the Grand appellation used for the car's top trim level. While today's Junkyard Gem has some of the features of the Grand Marquis and Marquis Brougham trim levels for 1979 (notably the padded vinyl landau roof and power windows), it lacks the huge chrome lower-body moldings of those cars. Instead, it's a regular Marquis 2-door sedan with a big load of expensive options. That landau roof has suffered greatly from its decades beneath the vinyl-disintegrating California sun. The Panther platform was a big technological upgrade from the late-1950s-vintage chassis technology of full-sized Fords of the 1960s and 1970s, and it stayed in front-line service in much the same form through 2011. Though its ride and handling were much improved, the 1979 Marquis was quite a bit smaller than its predecessors, and that caused some grumbling among Mercury shoppers. Some ham-handed junkyard shoppers really tore up the interior of this car while extracting a few bits and pieces, but we can still admire the Pine Green pleather of the glorious Twin Comfort Lounge front seats. You had two engine choices when buying a new '79 Marquis: the base 302-cubic-inch (5.0-liter) Windsor V8 making 129 horsepower or the optional 351-cubic-inch (5.8-liter) Windsor V8 rated at 138 horsepower. This one appears to be the 351, the same engine as had been swapped into the pizza-delivery Mercury I drove in the middle 1980s. New cars sold in California around this time had these giant emissions-numbers stickers on the side glass. Later, they went on the underside of the hood.

Junkyard Gem: 1955 Mercury Montclair Coupe

I find plenty of 1950s Detroit vehicles in the big self-service car graveyards I frequent, but most of them are fairly ordinary sedans that never stood much chance of getting fixed up and put back on the road. Such is not the case with today's Junkyard Gem, which is a top-trim-level, heavily optioned hardtop coupe from one of the most desirable model years of the tailfins-and-chrome postwar era. Nearly every Mercury model ever made was a Ford model with some cosmetic changes applied, and the '55s looked very similar to their mechanically identical Ford brethren. In 1955, the new Mercury came in three trim levels: the entry-level Custom, the medium-zoot Monterey, and the glitzy Montclair. Each was available as a hardtop coupe and four-door sedan, with wagon versions of the Custom and Monterey. The Montclair could be purchased as a convertible or with the wild "Sun Valley" glass roof. The Montclair got its own line of hallucinogenic two-tone interiors, in order to make the daily lives of Europeans feel even more gray and penurious (the UK only dropped food rationing in 1954, and the two Germanies were still clearing the rubble of their blown-up cities). This car's upholstery has been bleached by decades of sitting outside in the harsh High Plains climate, but it started out as vivid red and white "Chromatex" fabric. The list price on this car was $2,631, or about $29,200 in 2022 dollars. The Sun Valley and convertible Montclair each cost $2,712 ($30,100 today). Ford didn't offer a corresponding hardtop coupe in 1955, though the Fairlane Crown Victoria two-door did look extremely snazzy (and cost a mere $2,302— $25,545 now— with the same V8 engine as the Monterey). Meanwhile, Oldsmobile offered the handsome 88 Super Holiday Coupe for $2,714, though the Montclair had the more powerful engine. Oldsmobile had been selling new cars with overhead-valve V8s since the 1949 model year, while Ford didn't ditch the Model A-era flathead V8 for new U.S.-market cars until the 1954 model year (you could buy a new Simca Esplanada in Brazil with an Ardun-headed Ford V8-60 all the way until 1969). GM's Chevrolet Division got all the press in 1955 with the introduction of the brand-new small-block V8 engine, but Ford's 292-cubic-inch (4.8-liter) Y-Block V8 made more power than the 265-cube (4.3-liter) Chevy and the 324ci Olds Rocket 88.