2004 Mercury Mountaineer Base Sport Utility 4-door 4.6l 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.

Junkyard Gem: 1971 Mercury Comet 2-Door Sedan

When Ford introduced the original Maverick for the 1970 model year, Dearborn tradition required that a Mercury-badged version be created. That car ended up being the Comet, built from the 1971 through 1977 model years. Here's one of those first-year Comets in rough but recognizable condition, found in a Denver self-service yard not long ago. The Comet name had spent the 1960s affixed to the flanks of Mercurized Ford Falcons (1960-1965) and Fairlanes (1966-1969). Since the Maverick was the successor of the Falcon — sales of which went into an irrecoverable downward spiral once its sportier Mustang first cousin hit the streets — it made sense to move the Comet name over to the Mercury version. Nearly every American Mercury model ever sold was a U.S.-market Ford model with a different name and some gingerbread slapped on. Notable exceptions to this tradition include the 1999-2002 Mercury Cougar (mechanically based on the Contour but with a unique body) and the 1991-1994 Mercury Capri (an Australian-built mashup of Mazda components borrowed from the Ford Laser). The Comet was by far the cheapest Mercury model available in 1971, though it was considered more prestigious than its Maverick counterpart. The price tag on the '71 Comet two-door sedan started at $2,217 (about $16,505 in 2022 dollars), while the '71 Maverick two-door sedan cost $2,175 ($16,193 today). Meanwhile, AMC would sell you a new Hornet two-door sedan for one dollar less than a Maverick, Chevrolet had the Nova coupe for a dollar more than the Maverick, and Plymouth offered the Valiant Duster for $2,313 ($17,220 now). Toyota had a Maverick competitor as well that year, with the Corona at $2,150 for the sedan and $2,310 for the coupe. Having driven every one of the aforementioned models, I'd take the Duster if I went back in time and had to choose one (as a 1969 Corona owner, I'm not a fan of the 1971 facelift, though the Corona's build quality beats the Duster's). The build sticker on this car tells us that it was built at the Kansas City Assembly Plant (where Transits and F-150s are made today) and sold through the Los Angeles district sales office (there was a DSO in Denver, so it's a near-certainty that this car didn't start out in Colorado). The paint started out as Bright Blue Metallic (it's neither bright nor metallic 51 years down the road) and the interior was done up in Medium Blue Cloth & Vinyl.

Translogic drives wood-burning Mercury Beaver XR-7

You read the title right, we're talking about the Mercury Beaver XR-7. No, Mercury never officially built a car called the beaver. This is the brainchild of upstate New Yorker Chip Beam, who owns and operates Beaver Energy, LLC. It runs on gases created by wood pellets fermented in a 2,400-degree furnace and fed to a supercharged Ford 4.6-liter V8.
By all accounts, it gets down the road just fine, and has pretty close to full power. The best part is, you can grow the fuel yourself and avoid patronizing big oil, if that's your thing. The only drawback that we can see to the Mercury Beaver XR-7 is the PVC pipe jungle occupying the space that would be the trunk under normal circumstances.
Still, if you're willing to smell like a mountain man and look like a bad Back to the Future knockoff, this ride is right up your alley. Click past the jump to see Translogic's take on this modified Merc.