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For the first time in a Subaru engine, the centerlines of the cylinder bores do not intersect with the crankshaft axis to reduce friction during the piston downstroke; instead, there is a crank offset of 8 mm (0.31 in). Overall thermal efficiency is 40% due to the adoption of lean-burn combustion with an excess air ratio (λ) of 2. [32]
The EZ30 was refreshed in 2003, and when the Tribeca was introduced for the 2006 model year in January 2005, the EZ30 II was the sole engine option. [29] The EZ36 was introduced with the restyled Tribeca for the 2008 model year, [30] and replaced the 3.0 L EZ30 in the Legacy and Outback starting in 2009 for the 2010 model year. [31] [32]
The Subaru Outback is an automotive nameplate used by the Japanese automaker Subaru for two different SUV-themed vehicles: a Legacy-derived crossover station wagon, the Outback (1994–present, also sold as Legacy Outback (Japanese: スバル・レガシィアウトバック, Hepburn: Subaru Regashi Autobakku) in some markets), and an Impreza-derived off-road themed hatchback, the Outback ...
The final use was in the 2014 Legacy and Outback with the EZ36 engine. Usage: 2005-2014 Subaru Legacy GT, 3.0R, and 3.6R; Subaru Outback XT, 3.0R, and 3.6R; Subaru Tribeca; Subaru Forester s-edition; The Tribeca with ez-36 (3.6R) and early Outback XT used the 3.583 final drive ratio.
In 2002, the B4 RS30 was introduced with a naturally aspirated 3.0 L EZ30 DOHC flat-six engine. B4 Engine Structure. The B4 is powered by a 'phase 2' all-alloy DOHC, 16-valve, intercooled turbo 2.0-liter boxer four. According to official Subaru literature, there are several advantages to the boxer design.
All Subaru EJ engines have a 1-3-2-4 firing order, which, given the longer exhaust runners on cylinders 2 and 4 causes the characteristic "subaru boxer rumble". Some of the 2005 and later Subaru vehicle Engines (especially the turbo charged engines) are using CAN bus as their sole Vehicle/Vessel speed input channel.
The Subaru EE flat-4 diesel engine, the world's first to be fitted to a passenger car, is offered in both the Legacy and Outback sedans and wagons, identified as the Subaru Legacy 2.0D. The vehicle was released in the European Union starting March 2008, and is offered with a 5-speed manual transmission only.
Subaru released the 2008 models at the New York International Auto Show in April 2007 with a facelift and a larger 3.6-liter EZ36 flat-six engine rated at 191 kilowatts (256 hp). Subaru claimed 10 percent better fuel economy while using regular-grade gasoline; the 2006 and 2007 models require premium. [21]