First produced by Ford for the Focus in 2003, the 2.3L Duratec four-cylinder engine is built for tidy power and ultra-low emissions. Its design incorporates a dual overhead cam (DOHC) and four valves per cylinder.
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Known by Ford as the Duratec 23E engine, the all-aluminium block, four-cylinder power plant produces 151 horsepower at 5,750rpm and 154 foot-pounds of torque at 4,250rpm. It is the standard engine for all Ford Focus models.
Engineered for increased gas mileage, the 2.3L Duratec-powered Focus is classified as a Super Ultra-low Emissions Vehicle (SULEV) in California as well as a Partial Zero Emissions Vehicle (PZEV) in three other U.S. states. Fuel economy peaks at 25 city miles per gallon (mpg) and 33 highway mpg with a manual transmission, and 24 and 30mpg, respectively, with the automatic. The 2.3L Duratec is innovative in its zero-evaporative-emissions system.
The 2.3L Duratec features 87.5-by-87.53mm cylinder bores, a 94.0mm stroke, 4.5-qt. oil capacity, operates at a low idle speed of 700rpm and tops out at 7,000rpm.
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