The spark plugs are placed centrally for better combustion in the chamber. The intake valve diameter is 36 mm, and the exhaust valve diameter registers at 32 mm. The engine block is then installed with two aluminum heads, one camshaft on both intake and exhaust with two valves per cylinder, on the initial release, and followed with dual cams on some production with four valves per cylinder. The cylinder bore diameter is 92 mm, piston stroke of 75 mm, 130.5 mm connecting rod length, and a compression height of 32.7 mm. The Subaru EJ20 cylinder block is made from aluminum with cast-iron dry sleeves and a block height of 201 mm. Valvetrain: SOHC with two valves cylinder and DOHC four valves per cylinder.This 2.0 Liter engine replaced the smaller 1.8 Liter EA82 and was the first representative of the EJ series and became the basis for the EJ line for so many years. However, present WRX vehicles use the latest 2.0 liter FA engine.Īnyway, even not as famous as it should be, EJ20 still managed to be a popular swapping engine, especially JDM enthusiasts. Here in the United States, we are more used to the larger 2.5 liter EJ25 that are currently installed in the WRX STI as well as in WRX way back in 2006. The Subaru EJ engines launched in 1989 in the Legacy vehicle and have multiple variants in displacement over the years. Subaru EJ20 is a flat-four gasoline engine with SOHC and DOHC releases there are also turbocharged versions and corresponding upgrades that were modified to cope with the rising technologies of the automotive industry. Let’s get right to it! What are EJ20 Engines?
It eventually meets its end, concluding its three-decade tenure after the successful release of the ‘Final’ edition in 2020, unveiled at the Tokyo Motor Show, a Japan-exclusive limited to just 555 cars that featured the last out of the EJ20.īut what makes EJ20 such a charismatic and powerful engine? Let’s find out everything we must know about this engine’s design, reliability, issues, tuning potential, and many more.
After Subaru EJ20’s success for three decades as a mainstay machine that powered iconic vehicles such as the WRX STI, it is one of the more notable variants of the EJ family of engines.
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