THE SUBARU BOXER ENGINE
At the heart of EVERYSubaru is theSubaru Boxer Engine; named for the horizontalmovement of the pistons - much like boxers throwing punches. On this page youwill learnwhySubaru chose the Boxer engine,howitworks, and the safety, performance and handlingadvantagesitbrings to the driving experience.
BENEFITS OF THE SUBARU BOXER ENGINE
·Flat layout allowsengine output to flow directly into the transmission. This linear flow of powerreduces engine components and inefficiencies, resulting inbetter fueleconomy. Subarus are the most fuel efficient AWD vehicles in America, oftengetting better gas mileage than its FWD competitors.
·Byloweringthe center of gravityof the engine, you also lower the center ofgravity of the entire vehicle. A lower center of gravity = more responsive -particularly when cornering or doing evasive maneuvers.
·Lessvibration. The natural counterpunch of the opposite piston cancels out unwanted vibration where inline andv-type engines require additional components to accomplish this.
·Safety. In the event of a frontal accident, theboxer engine's low center of gravity allows the engine to drop"below" the passenger compartment instead of in it.
As you can see, the Subaru Boxer Engineis itself a study in symmetry and delivers an impressive amount of power fromsuch a small footprint. Combined withSubaru's Symmetrical All-Wheel Drive, both of these aspects combine to deliver a safer, morestable platform that is perfectly aligned along the center-line of the vehicleresulting in better balance.BETTER BALANCE = BETTER CONTROL.
SUMMARY
For over 45 years Subaru has been solelycommitted to the Subaru Boxer Engine in ALL of their models. The innovativedesign is part of Subaru's core DNA. Why don't other manufacturers use it?Porsche does in a few of their models including the Boxster, Cayman and 911models. Porsche states, "This flat, short design results in a very lowcenter of gravity and extremely smooth running."For Honda, Toyota andothers, it would be nearly impossible to benefit from a boxer engine becausetheir architecture is not designed for the transmission to sit behind theengine. With inline engines the transmission often sits to one side of theengine, thus creating imbalance. While you may not bedoing evasive maneuvers on a test drive, isn't it nice to know that as an owneryou have that capability if you need it. That's the Subaru Boxer Engine!
SUBARU BOXER ENGINE
PERFORMANCE BY MODEL
It seems as though Subaru offers the perfect size boxer engine for each vehicletype including:
- 2.0 liter 4 cyl DOHC engine w/ 148 hp and 145 lb-ft torque [XV Crosstrek andImpreza]
- 2.0 liter 4 cyl DOHC engine w/ 200 hp and 151 lb-ft torque [BRZ]
- 2.5 liter 4 cyl DOHC engine w/ 173 hp and 174 lb-ft torque [Forester,Outback, Legacy]
- 2.0 liter 4 cyl DOHC turbocharged engine w/ 250 hp and 258 lb-ft torque [TurboForester]
- 2.0 liter 4 cyl DOHC turbocharged engine w/ 268 hp and 258 lb-ft torque [WRX]
- 2.5 liter 4 cyl DOHC turbocharged engine w/ 305 hp and 290 lb-ft torque [STI]
- 3.6 liter 6 cyl DOHC engine w/ 256 hp and 247 lb-ft torque [Outback, Legacyall Tribecas]
2.0-LITRE DOHC TURBO SUBARU BOXER
To meet the constantly changing needs, a completely new BOXER engine was engineered from the ground up, with new enhancements across the board being implemented. A longer stroke and more compact combustion chamber combine with a dual AVCS for better intake and exhaust efficiency, lighter pistons and reduced friction throughout the engine, bringing exceptional efficiency and impressive performance. Mountains of low-speed torque mean exciting acceleration response, making the engine easier to handle in day-to-day driving. It's an engine designed for both environmental responsibility and fun, in what can only be called a new-generation powerhouse.
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