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The EJ251 was the first version of the 2.5L single overhead cam engine line by Subaru for the US market. The EJ251 was replaced by the EJ253 in many models due to its improved cooling to aid in head gasket life and improved engine management and sensors. The EJ251 commonly experienced head gasket failures in the form of interior channel ...
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 FB16 direct injection turbocharged (DIT) engine is the first FB-series engine with a turbocharger, and includes direct injection with an auto stop/start system. It is the base engine in the first-generation (2014–20 model years) Subaru Levorg. The Levorg also has an option for a 2.0 litre direct injection turbo engine, the FA20F.
Subaru Alcyone VX. Created as a refined luxury engine with improved power over the EA82T, Subaru introduced the ER27 engine in November 1985 for the Subaru ACX-II concept car, shown at the Tokyo Motor Show and billed as the 'concept car of the near future.' [2] The concept went into production as the Subaru Alcyone VX (Subaru XT6 in North America) in August 1987, [3] the exclusive application ...
The 2.5-liter Onyx and Limited trim levels for the Canadian market are sourced from Japan. With the exception of the Wilderness trim, Crosstrek models produced in the United States are not exported to Canada. [57] For the 2025 model year, the 2.5-liter FB25D became the standard engine for the Premium trim, replacing the 2.0-liter FB20D.
In 2001, a B4 RS25 model was introduced with a naturally aspirated 2.5 L DOHC engine. 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 ...
Saab offered the 2005 model year 9-2X with Subaru's naturally aspirated 2.5-liter EJ253 engine in the "Linear" trim level (165 hp (123 kW) and 166 lb⋅ft (225 N⋅m)), with the turbocharged 2.0-liter engine shared with the Impreza WRX offered in the "Aero" badged model (227 hp (169 kW) and 217 lb⋅ft (294 N⋅m)). All-wheel drive came ...
For the first time since it was discontinued in 2005, Subaru revived the 2.5 RS model, equipping it with a 2.5-liter FB25D engine which develops 182 hp (136 kW) and 178 lb⋅ft (241 N⋅m) of torque. The Base and Sport models use the 2.0-liter FB20D engine carried over from the prior generation, which makes 152 hp (113 kW) and 145 lb⋅ft (197 ...