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The Subaru FB engine is the third generation of gasoline boxer-4 engine used in Subaru automobiles, and was announced on 23 September 2010. [1] It follows the previous generation EJ-series engine which was introduced in 1989 and the first generation EA-series which was introduced in 1966.
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 Subaru EJ engine is a series of four-stroke automotive engines manufactured by Subaru. They were introduced in 1989, intended to succeed the previous Subaru EA engine . The EJ series was the mainstay of Subaru's engine line, with all engines of this series being 16-valve horizontal flat-fours , with configurations available for single, or ...
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 ...
Subaru FA20F. A version with Subaru's own direct fuel injection and twin-scroll turbocharger was introduced in 2012. [8] Also known as the FA20DIT. The FA20F was named to the Wards Auto "10 best engines" list in 2015 [9] and 2016. [10] Compression Ratio: 10.6:1 [11] Assembly: Oizumi, Japan [11] Firing Order: 1-3-2-4 [11]
The only tuned-by-STI engines that have been in the standalone WRX STI are the EJ257 (Export) and EJ207 (JDM only) specifications of the Subaru EJ engine. (Although earlier Impreza -based models were also fitted with the EJ22G Boxer Turbo )) The highest output model of EJ25 ever produced, producing up to 341 hp (346 PS; 254 kW) at 6,400 rpm and ...
The EA-82T engine was introduced in 1984 for the Third generation of Subaru Leone in the GL-10 and RX Turbo trim models plus the XT (Vortex), and later on the Subaru Leone RX Coupe models. It is a turbocharged version of the MPFI EA-82 with modified cylinder heads, lower compression pistons, and boost pressure of 7 psi (0.48 bar).
The Intelligence-Active Valve Lift System (i-AVLS) is a valvetrain technology implemented by Subaru in their 2.5 L SOHC naturally aspirated engine to improve emissions, efficiency and performance. Note that AVLS is different from AVCS used on other Subaru engines.