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2010 Buick LaCrosse to get 4-cylinder engine
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The 2010 Buick LaCrosse CX becomes the first Buck since the 1925 Buick 4 to have a four cylinder engine. In the 86 years since then, Buick has sold nothing with less than a six-cylinder engine. However, for 2010 General Motors’ direct injection Ecotec 2.4-liter four will power the Lacrosse CX.
Offered as a fuel-efficient alternative to the also available 3.0-liter and 3.6-liter V-6 engine, the four is expected to achieve an EPA fuel economy rating of 20 mpg city and 30 mpg highway.
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Buick expects about 25 percent of LaCrosse buyers will opt for the four. Rated at 182 horsepower and 172 lb-ft of torque, the LaCrosse won’t be an on-ramp rocket thanks to curb weight approaching two tons. The 2009 LaCrosse weighed in with a curb weight of 3948 with the 3.0-liter V-6. The four will weigh less that than but not much.B
uick notes that the Ecotec’s direct injection allows a higher compression ratio and therefore more power with less fuel and lower emissions, up to 25 percent lower emissions during cold start. However, the broad spread of the fuel economy numbers suggest that the 2.4-liter will have to work harder around town to provide day-to-day operation while rolling up larger numbers on the highway than a larger engine could hope to record.
uick notes that the Ecotec’s direct injection allows a higher compression ratio and therefore more power with less fuel and lower emissions, up to 25 percent lower emissions during cold start. However, the broad spread of the fuel economy numbers suggest that the 2.4-liter will have to work harder around town to provide day-to-day operation while rolling up larger numbers on the highway than a larger engine could hope to record.The standard equipment engine of the 1925 Buick was a 190.8 cubic inch six—or about 3.1-liters—producing 70 horsepower and immeasurably more exhauts (and other) emissions.
Porholes--originally called "Ventiports"--didn't arrive on Buicks until 1949, revived in 2003, with the number of portholes--six or eight--indicating the number of cylinders under the hood. Will we see Buicks with four portholes on thier hoods in 2010?
Illustrations, top to bottom: 2010 Buick LaCrosse CXS, copyright GM Corp.; 2010 General Motors 2.4-liter EcoTec direct injection engine, copyright GM Corp.; 1922 Buick, from General Motors advertisement.
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