Just like the predecessor, the EJ20 engine has an aluminum cylinder block with dry cast iron sleeves/liners put in inside of. The most typical Edition from the Obviously aspirated engine, the EJ20E, has aluminum alloy cylinder heads with SOHC design and style (one overhead camshaft). EJ20 head options 4 valves per cylinder and centrally Positioned spark plugs. The diameter in the ingestion valves is 36 mm, and of your exhaust valves - 32 mm.

In addition, the firing get is set To maximise the effectiveness with the exhaust scavenging procedure. It helps in successfully clearing the combustion chambers of exhaust gases, which is especially beneficial in turbocharged EJ20 variants, since it permits a far more fast ingestion of fresh new air, Hence bettering the engine’s performance and ability output.

When That will not seem like A great deal by present day benchmarks, It really is well worth remembering that it's more ability than an equal model 12 months Audi A4 experienced. The 2019 WRX was the final calendar year that Subaru utilized the EJ20, and it had 268 horsepower.

A 5-velocity Sportshift vehicle comes regular within the MY04 Liberty GT – there was no handbook choice until eventually the MY05 Model. The MY05 Liberty GT guide also offers a lot more grunt in comparison to the car versions – 190kW and 330Nm. Oh, and don’t neglect the neighborhood Forester GT which appeared for your 1999 model 12 months. The Forester GT works by using a relatively small output Model on the EJ20 turbo – it makes use of an eight.5:one static compression ratio, a little turbocharger and intercooler, somewhat tame camshafts as well as a conservative ECU tune. Max output is 125kW and there’s 240Nm at just 3200 rpm. A 5-speed guide or 4-velocity auto will come fitted. For that MY01 version output was amplified 5kW and 5Nm. This came from altered cylinder head ingestion ports with Tumble Generator Valves, a larger turbine housing, fitment of the pre-turbo cat converter and current engine management and ignition devices. The two.five-litre engine replaces the EJ20 in the current Forester website XT.

This two-liter Edition laid down the historical past of your EJ series. The EJ20 replaced the old EA82 1.8-liter engine and became the principal engine choice for numerous Subaru styles for years.

The MY99 and MY00 Model five and six STis have exactly the same 206kW/353Nm output but we feel there may possibly are some minor changes (for example camshaft profile).

The passenger intake camshaft is notched to spin the scavenge pump. The oil pan has an additional mounting bolt and one of several oil pan bolts adjusted situation in comparison to one other versions from the EJ255.

WRX output remained the same until finally the 2005 introduction of your limited edition WRX WRP10. Making use of an up grade ECU and free-movement exhaust, output is enhanced to 175kW (a get of 8kW over The bottom WRX). The WRP10 goes into the record guides for having the strongest EJ20 turbo engine within an Australian-spec WRX; the MY06 design employs a 2.5-litre engine. In the STi variety, Australia initial obtained the MY99 Version five two-door and MY00 Version six four-doorway styles. These engines retain the Japanese-spec mechanicals but are detuned to suit Australian gasoline – so true output is probably less than the claimed 206kW/353Nm.

Adhering to these guidelines may help make sure your Subaru EJ20 engine operates as efficiently as you possibly can, preserving you funds at the pump and lowering your environmental footprint.

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Exhaust Modifications: A considerably less restrictive exhaust program allows the engine to breathe greater and adds horsepower.

The EJ20 is really a two.0-liter boxer engine, that means the pistons journey out and in horizontally relative towards the crankshaft rather then up and down as they might in an average inline engine set up.

the sparkplug pipe is pressed into the cylinder head and isn't serviceable. If it gets to be harmed the cylinder head need to be replaced. The seals put in onto the finishes from the sparkplug pipes seal versus the valve addresses and will get replaced when the valve cover is taken out.

Subaru endorses applying synthetic oil to the EJ20 engine to offer the best security and effectiveness, especially underneath Extraordinary problems or efficiency driving.