Ej205 oil capacity

Ej205 oil capacity DEFAULT
Subaru Impreza (2000)123Impreza 1.5R (2005 – 2007)EJ 154.215 000 km/ 12 monthsImpreza 1.6 (2000 – 2003)EJ 164.512 500 km/ 12 monthsImpreza 1.6 (2003 – 2005)EJ 164.512 500 km/ 12 monthsImpreza 2.0 (2000 – 2003)EJ 204.512 500 km/ 12 monthsImpreza 2.0 (2003 – 2005)EJ 20G412 500 km/ 12 monthsImpreza 2.0R (2005 – 2007)4.215 000 km/ 12 monthsImpreza 2.0 WRX (2000 – 2003)EJ 20 turbo512 500 km/ 12 monthsImpreza 2.0 WRX (2003 – 2005)EJ 20 turbo512 500 km/ 12 monthsImpreza 2.0 WRX STi (2000 – 2003)EJ 20 turbo512 500 km/ 12 monthsImpreza 2.0 WRX STi (2003 – 2005)EJ 20 turbo512 500 km/ 12 monthsImpreza 2.5 (2000 – 2003)EJ 254.512 500 km/ 12 monthsImpreza 2.5 WRX (2005 – 2007)4.315 000 km/ 12 monthsImpreza 2.5 WRX STi (2005 – 2007)4.315 000 km/ 12 months
Sours: https://oil-change.info/subaru-impreza-engine-oil-capacity/

Subaru Oil System Upgrades - Tricks Of The Trade

| How-To - Engine and Drivetrain

Helping You Wrench

Lateral and longitudinal forces from turns, acceleration, and braking, especially in drifting and road race vehicles, could push oil around the floor and up the side of the pan, starving the pickup under high-rpm/high-lateral g conditions. This is a common problem for high-performance engines. The Subaru EJ engine is notorious for oiling problems. From spun rod/crank bearings to occasional faulty oil pickup units, this engine has been begging for an aftermarket fix to prevent such mishaps from occurring. Killer B Motorsport out of Waynesboro, VA, specializes in aftermarket Subaru components. KBM offers a number of upgraded oiling parts, including a more robust oil pickup, oil pan baffle, and larger-capacity oil pan.

OEM Subaru EJ205 Oil Pan

Here’s a close-up inside the OEM ’02-05 Subaru WRX oil pans designed with a flat belly surface. You can see that it already has a built-in baffle, but it does not provide enough flow control by itself to prevent oil starvation in high g-force turns.

KBM Optimal Oil Pan

The Optimal Oil Pan holds an extra 1.3 quarts of oil, a 30 percent increase in capacity over OEM. KBM uses 1⁄8-inch-thick CNC-formed aluminum sheet to make the pan. For added convenience, the pan comes with two ½-inch NPT drain/sensor ports in the CNC-machined billet aluminum drain block. The aluminum baffles built inside the pan are an improvement over the OEM designs to concentrate the oil closer to the pickup, making it more stable and less prone to oil flow fluctuations. The oil pan’s compact design, based off of the OEM EJ25 pan allows it to be compatible with numerous aftermarket headers.

KBM Windage/Baffle Tray

When running high rpm the oil is pumping faster and is under more pressure, which creates windage, an oil foaming condition that causes parasitic drag on the crankshaft caused by oil splashing out of the sump at high rpm, keeping the oil from settling back into the pan. Poor internal oil circulation keeps it from returning to the pan, causing the oil pickup to surge and, in many cases, starve the oil pump. A baffle pan’s real purpose is to slow the return of the oil back into the pan. It is designed for the oil to fall on it so that air can escape the oil suspension where it then gets picked back up. The KBM windage tray features numerous advantages over the OEM piece, including a closed rear section to prevent oil from sloshing into the crank under hard acceleration and aggressive shifts, a block contoured profile to minimize oil returning from the heads interfering with the crank, and directional louvers to prevent oil in the pan from splash/sloshing into the crank.

OEM Oil Pickup

Replacing the OEM oil pickup is a good idea, regardless of how you drive your car. An alarming number of Subaru owners have claimed that their factory-welded/brazed oil pickups have cracked at the base (shown with our pointer) of the pickup tube. A cracked pickup very rarely has any symptoms. If they do, it’s an occasional oil light flicker at idle. The time between the initial crack formation and propagation to complete failure is more often than not, a rapid progression that gives little to no warning (see pic with carnage). A dented or damaged pickup can severely inhibit the flow of oil into the engine causing oil starvation.

Killer B Oil Pickup

The KBM Ultimate oil pickup has become a popular upgrade among Subaru owners. The pickup uses a .12-inch-thick double bracket, three-times OEM oil pickup tube thickness, and a brace between the bracket and the oil pickup tube to further strengthen the assembly. This highly reinforced pickup is a direct fit for all 2.5L ’04-09 STI, ’06-09 WRX, and LGT. The ’02-05 EJ20 WRX requires 2.5L oil pan for fitment.



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Sours: http://www.superstreetonline.com/how-to/engine/impp-1205-subaru-oil-system-upgrades
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EJ20/EJ25 WRX & STi Notes:
Engine = 4.4 - 4.8 quarts
Cooling System Capacity = 1.95 - 2.025 Gallons
Rear Diff (WRX) = 0.85 Quarts
Rear Diff (STi) = 1.05 Quarts
Manual Transmission (5-Speed) = 3.7 Quarts
Manual Transmission (6-Speed) = 4.35 Quarts
Automatic Transmission = 10 - 10.4 Quarts
Front Diff (Auto) = 1.25 - 1.55 Quarts
Please check your Subaru Owner's Manual before purchase.

The STM Subaru EJ AMSOIL Signature Series Oil Change Package is conveniently available with all AMSOIL Premium Protection Synthetic and Signature Series Synthetic and includes a genuine OEM Subaru oil filter and drain bolt gasket. 5W30 is recommended for most Subaru's but we offer other popular AMSOIL flavors for your choosing.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
The STM Subaru EJ RedLine Engine Oil Change Package is conveniently available with all RedLine Fully-Synthetic Ester Engine Oils and includes a genuine OEM Subaru oil filter and drain bolt gasket. 5W30 is recommended for most Subaru's but we offer other popular RedLine flavors for your choosing.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
15208AA12A,11126AA000,15304,11114,11304,11404,11504,12504 STM SUBARU EJ ROYAL PURPLE OIL CHANGE PACKAGE
The STM Subaru EJ Royal Purple 5W30 Engine Oil Change Package includes a genuine OEM Subaru oil filter and drain bolt gasket with your choice of standard synthetic or HPS motor oil.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
15208AA12A,11126AA000,31530,01530 AMSOIL RACING MOTOR OIL
STM is an official AMSOIL dealer. We offer AMSOIL's full line of engine oil products. As per AMSOIL regulations, please call to order AMSOIL products.
Brad Penn is truly a USA oil. This is a partial synthetic oil and we carry 6 different flavors. This is oldest continuously operated lube oil refinery in the world. Due to the consistency of their feedstocks, the quality of their products can be traced from the wellhead to the finished packaged product.
1 QT Bottle or Case.
7126,7109,7150,7144,7158,7119 MOTUL ENGINE OILS
MOTUL has over 160 years of brand history producing some of the industry's best performance and OEM oils. Shop our available MOTUL Engine Oil line and choose the best oil for your vehicle's needs.
Various Packaging.
RedLine's Fully-Synthetic Ester Engine Oil line up is produced in only one top-of-the-line grade and offer the highest quality available on the market today with the widest variety of viscosity.
1 QT Bottle.
15204,11604,11304,11404,11504,12504,21404,11704 ROYAL PURPLE MOTOR OIL
Royal Purple's API-licensed Motor Oil combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance. Royal Purple's API-licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple's API-licensed SN motor oil meets ILSAC GF-5 and Dexos1™ performance requirements.
1 QT Bottle.
31520,31530,31130,31140,31250 ROYAL PURPLE HPS MOTOR OIL
Royal Purple HPS Series motor oil is specifically formulated to maximize performance and meet the demands of high performance and modified engines. HPS is recommended for vehicles no longer under manufacturer warranty and for those seeking a higher level of performance and protection.
1 QT Bottle.
01520,01530,01130,01140,01154,01250 ROYAL PURPLE XPR MOTOR OIL
Royal Purple's XPR (Extreme Performance Racing) is specifically formulated for the demands of multi-platform racing environments. XPR is popular in a variety of motorsports including: NASCAR, NHRA, World of Outlaws and Bonneville Salt Flats.
1 QT Bottle.
01009,01011,01021,01041,01051 ROYAL PURPLE ENGINE BREAK IN OIL
Royal Purple Break-in Oil is formulated to allow optimal ring seal and protect rotating assembly components such as the camshaft and valve train from initial start up wear. Royal Purple combines highly refined mineral oil, preferred for engine break-in, with advanced additives containing high levels of zinc and phosphorus to optimize protection in flat-tappet and roller engines.
1 QT Bottle.
Genuine OEM Subaru Blue Oil Filters & Drain Plug Gaskets for the EJ20/EJ25 WRX & STi. Purchase includes one filter and one crush gasket.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
STM is an official AMSOIL dealer. We offer AMSOIL's full line of oil filter products! As per AMSOIL regulations, please call to order AMSOIL products.
Most aftermarket oil filters assume the use of high viscosity oil; therefore, filter paper strength is prioritized while sacrificing absolute pressure loss properties. HKS has readdressed filter strength and overall structure to provide the oil flow that the engine requires and to pursue the HKS ideals in what is required from a sports oil filter.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
K&N Performance Gold Oil Filters use thicker canister walls for extra strength and durability coupled with a resin-impregnated cellulose filter media allowing for higher flow rates while providing outstanding filtration. Features a 1' nut welded to the top of the canister so they can be easily wrenched-off with a standard tool.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
Grab a Project Kics Magnetic Drain Bolt for your car before your next oil change! The Project Kics Magnetic Drain Bolt features Aluminum construction and a Neodymium Magnet for maximum metal shaving attraction. Yellow M20 x 1.5 for EJ20/EJ25.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
Constructed out of 6061 aluminum and made with a neodymium magnet that holds on to the metal debris that your oil filter might miss that could ruin your engine, protecting it longer than any other oil plug on the market. Comes with a Dowty oil seal to prevent leaks. M20 x 1.5 for EJ20/EJ25.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
The Greddy Magnetic Oil Drain Plug is a powerful 5000 gauss neodymium magnet. By using the "GReddy Magdrain" plug, you can help reduce the amount of abrasive materials in your engine, while extending the life of your engine. M20 x 1.5 for EJ20/EJ25.
2004-2016 Subaru STi.
2002-2014 Subaru WRX.
STM is an official AMSOIL dealer. We offer AMSOIL's full line of Racing and Off-Road Grease! As per AMSOIL regulations, please call to order AMSOIL products.
ARP Ultra-Torque Fastener Assembly Lubricant gets you within 5% of the required pre-load on the first pull and stays consistent with each subsequent cycle-race prep, machining, pre-assembly and final assembly. Premium grade moly base with rust and corrosion inhibitors.
.5oz, 1.69oz, 10oz and 20oz packaging.
100-9908, 100-9909, 100-9910, 100-9911 MANLEY LUBE FOR CONNECTING ROD BOLTS
The Manley Lube for Connecting Rod Bolts provides superior lubrication for rod bolt assembly. Available in a .5oz or 1 oz tube.
.5oz or 1oz Tube.
OEM Mitsubishi Liquid Gasket. "Mitsu-Bond."
Universal Application.
Red Line Assembly Lube is used by many of the best engine builders, engineers, and technicians in Formula 1, GP2, Formula 3, NASCAR, NHRA, and WRC. Prepares potential wear surface and prevents metal contact before adequate lubrication can be supplied. Recommended and used by top camshaft and drivetrain manufacturers.
4oz or 16oz Jar.
Royal Purple Max-Tuff Synthetic Assembly Lubricant is an ultra-tough, synthetic lubricant designed for engine builds and repairs, specifically crankshaft, camshaft and rod bearing assembly. Max-Tuff utilizes unique, synthetic molecules that adhere to metal surfaces to create a formidable, load-bearing physical barrier between surfaces.
2oz or 8oz Tube.
Ultra-Performance Grease (UPG) is a high performance, multi-service, aluminum-complex, synthetic grease which significantly increases bearing life and equipment reliability. It also makes bearings run smoother, cooler and quieter. 14.5oz.
14.5oz Tube.
ThreeBond Gasket Maker Gray RTV Sealant is the highest quality silicone RTV on the market. Specified by many OEM service manuals, you can rest assured it is a perfect choice for your engine.
3.8oz Tube.
Commonly used in the R180 Rear Diff
Genuine OEM Subaru Factory LSD Oil is recommended for the Subaru STi and 6-speed Legacy GT R180 rear differential models.
4 Liter Can.
Commonly used in the R180 Rear Diff
Mineral lubricant specially formulated for limited-slip differentials (LSD) for racing cars, 4WD, passenger cars and construction vehicles. Excellent for all types of hypoid differentials with or without limited-slip and systems operating under shocks and heavy loads.
2 Liter Bottle.
Commonly used in the Subaru Differentials
75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5.
1 QT Bottle.
Commonly used in the Manual Transmission
Subaru recommends the 75W-90 High Performance Gear Oil for the WRX & STi differential and manual transmission. This product used to be offered only in the 5-gallon pail formerly known as "Extra-S."
1 Quart.
Recommended for the WRX & STi Power Steering
The Genuine Subaru Automatic Transmission Fluid (ATF-HP) is recommended for use in all Subaru Automatic Transmissions and Subaru Power Steering Systems.
Subaru Applications.
Red Line Power Steering Fluid. Improved wear protection, resists thermal breakdown, evaporation and foaming. Provides continued high pump output, suitable for most power steering units. Lightweight fluid avoids power losses. 50% greater high-temp viscosity and 1/5 of the high-temp evaporation. Click for more info.
1 QT Bottle.
100% Synthetic Automatic Transmission Fluid for most modern automatic transmissions (manual mode, sequential mode, electronically controlled) and most power steering systems. 1 liter.
1 Liter Bottle.
105784 - (103221 old part number) AMSOIL POWER STERING FLUID
STM is an official AMSOIL dealer. We offer AMSOIL's full line of power steering fluid products! As per AMSOIL regulations, please call to order AMSOIL products.
Recommended for the WRX & STi
The Genuine OEM Subaru Long Life Super Coolant is formulated for long-lasting corrosion and rust protection for all cooling system components, this prediluted antifreeze/engine coolant prevents the use of poor quality water that can lead to cooling system failure.
Subaru Applications.
STM is an official AMSOIL dealer. We offer AMSOIL's full line of antifreeze and cooling system products! As per AMSOIL regulations, please call to order AMSOIL products.
Purple Ice reduces engine heat by reducing the surface tension of the radiator fluids for improved heat transfer. It helps prevent the formation of scale deposits in the radiator and lubricates the water pump seals. The new formula surpasses the old formula in corrosion and electrolysis protection.
12 oz Bottle.
WaterWetter is a unique wetting agent for cooling systems which reduces coolant temperatures by as much as 30°F. This liquid product can be used to provide rust and corrosion protection in plain water for racing engines, which provides much better heat transfer properties than glycol-based antifreeze.
12 oz Bottle.
STM is an official AMSOIL dealer. We offer AMSOIL's full line of brake fluid products! As per AMSOIL regulations, please call to order AMSOIL products.
Designed to excel within the extreme demands made on a race vehicle or by high performance drivers and exceeds all DOT4 standards. It is compatible with and will mix well with most DOT3, DOT4 or DOT 5.1 fluids. For track and HP street use. Dry boiling point 536°F. Wet boiling point 388°F.
1 Liter Bottle.
Extreme high performance polyglycol brake fluid. Far exceeds the standards of DOT 4. Each bottle is filled with Nitrogen, increasing shelf life and eliminating contamination while factory sealed. Extremely high dry boiling point 594°F(312°C) helps prevent vapor lock and brake fade during hard use, with excellent recovery time. Wet boiling point 4017°F(205°C). 500mL.
500ML Bottle.
Very high dry boiling point of 617°F (325°C) and a wet boiling point of 400°F (204°C). For all types of hydraulic brake and clutch actuators requiring non-silicone synthetic fluid. Specially designed to resist extreme temperature generated by racing brakes (carbon and ceramic) only allowing a minimal air entrance for brake cooling. 500mL.
500ML Bottle.
100% synthetic brake fluid on polyglycol basis for all types of hydraulic actuated brake and clutch systems in accordance with DOT 5.1, DOT 4 and DOT 3 manufacturers' recommendations. Specially designed for anti-locking brake system (ABS). Dry boiling point of 522°F (272°C). 500mL.
500ML Bottle.
Click here to see all the Universal Fluids we carry.
Sours: https://www.streettunedmotorsports.com/diy/maintenance_fluids_ej20_ej25_wrx_sti.htm
Change Oil on an 03 WRX


Change the Motor Oil And Filter

Views this week: 29

Total views: 27.7k

Author: RobT

This guide will illustrate an oil and filter change for a 2005 STI, but should apply to similar Subbie's. A general rule-of-thumb is to change the oil and filter every 3000 miles. I use full synthetic oil and typically go 4000 miles.

After 86K, the car seems to be content with this interval.

Required Tools

Required Parts

Step by Step Instructions

Raise the Car


After collecting the necessary tools and replacement parts, jack, drive, or lift the car to provide adequate access to perform the oil change.

  • If using a jack, always use jack stands as the jack could fail

  • If using a ramp, always use wheel chocks to prevent the car from rolling back

  • Jack or Lift points for a two-post lift are illustrated below and further indicated by notches in the frame seam. Consult your owners manual for additional illustrations as needed.

Image 2604 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


The front plastic air dam must be removed for access to the oil filter:

  • Using the 12mm deep socket or Phillips screwdriver, remove the 3 front and 2 rear bolts at locations {A}
Image 2607 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


  • Using a flat-head screwdriver, remove the 4 plastic grommets at locations {B}
Image 2610 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


  • If you have a grommet removal tool, I find it best to start with the slotted screwdriver to back the grommet off, then finish with the grommet removal tool. This approach minimizes damage to the plastic grommets, especially as they age and get brittle.
Image 2613 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


With the bolts and grommets removed, take hold of the air dam and lift it slightly up and to the rear of the car to slide it off its two mounting hooks.

Image 2616 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


Note from the first picture in Step 3 that the oil drain bolt is accessible with the air dam in place. If you put a premium on efficiency and don't mind altering the car a bit, you may decide to cut an access hole in the air dam to the oil filter. This would allow you to skip the air dam removal/install for future oil changes.


You now have ready access to both the oil pan drain bolt and filter.

Image 2640 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


Situate the oil catch basin under the drain plug and remove the 17mm drain plug at location {A}. Latex or other disposal gloves and a wipe rag or paper towel are recommended. Loosen the drain plug with the wrench, then back it out by hand to keep the plug from falling into the catch basin.

If your basin is large enough to cover both areas, allow the oil pan to continue draining and remove the oil filter at location {B}. A filter wrench may be required to loosen it.

Image 2619 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


Inspect the drain plug and wipe clean to remove any metallic residue. Subaru recommends replacing the crush washer with each use. I've had no issues re-using them 1 or 2 times, however. If you do replace the washer, take note of the orientation - though it's not critical, the preferred orientation is with the crush side placed up against the pan. Once the oil is finished draining replace the drain plug and tighten.

Image 2622 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


I prefer to fill the new oil filter before install. I believe it helps ensure good flow on first start up with the new oil. Also spread a light coat of oil over the rubber gasket of the filter to help it seal. Install the new filter and hand-tighten as much as you can. I usually add one additional quarter-turn with the filter wrench just to be sure - but don't over do it.

Image 2625 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


With the drain plug and filter secured, replace the air dam by aligning the two slide hooks into the front frame area. I find it helps to note the location of the two rear bolt holes for alignment as well. With the air dam hanging from it's hooks, insert the 4 plastic grommets and 5 retaining bolts and tighten.


With the air dam in place, lower the car and raise the hood to gain access to the oil filler cap {A} and oil dip stick {B}.

Image 2628 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


The car requires 4.2 quarts of oil. I use the following procedure to help prevent overfilling: When using a 5-quart container, I like to mark it for 4.2 quarts before I start pouring. I stop pouring at 4 quarts, replace the oil filler cap, start the car and run for a minute. Then stop the car and check the level on the dip stick. If more oil is needed, I repeat the process.

Image 2631 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI
Image 2634 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI
Image 2637 from Change the Motor Oil And Filter on a Subaru Impreza WRX STI


Replace the oil filler cap and oil dip stick, lower hood, and update your maintenance records for the oil and filter change.

Sours: https://howtune.com/articles/130-change-the-motor-oil-and-filter-on-a-subaru-impreza-wrx-sti

Capacity ej205 oil

Subaru EJ20

  1. Specifications
  2. Overview, problems
  3. Performance tuning

Subaru EJ20 engine specs

ManufacturerGunma Oizumi Plant
Also calledSubaru EJ20
Cylinder block alloyAluminum
2 valves per cylinder
4 valves per cylinder
Piston stroke, mm (inch)75 (3.62)
Cylinder bore, mm (inch)92 (3.86)
Compression ratio8.0 (EJ205 WRX/EJ207/EJ20G/EJ20K)
8.5 (EJ205 Forester/EJ208)
9.0 (EJ205 WRX 2002+/EJ206/EJ208)
9.5 (EJ20X/EJ20Y)
9.7 (EJ20J)
10.0 (EJ204 Impreza II)
10.1 (EJ201/EJ202/EJ20D)
10.2 (EJ204 Impreza III)
Displacement1994 cc (338.8 cu in)
Power output224 kW (125 HP) at 5,500 rpm
239 kW (135 HP) at 5,600 rpm
298 kW (137 HP) at 5,600 rpm
300 kW (140 HP) at 5,600 rpm
224 kW (155 HP) at 6,400 rpm
239 kW (160 HP) at 6,400 rpm
298 kW (180 HP) at 6,800 rpm
300 kW (190 HP) at 7,100 rpm
224 kW (200 HP) at 6,000 rpm
239 kW (220 HP) at 6,400 rpm
298 kW (230 HP) at 5,600 rpm
300 kW (240 HP) at 6,000 rpm
224 kW (250 HP) at 6,000 rpm
239 kW (260 HP) at 6,000 rpm
298 kW (260 HP) at 6,500 rpm
300 kW (275 HP) at 6,500 rpm
224 kW (280 HP) at 6,500 rpm
239 kW (308 HP) at 6,400 rpm
298 kW (320 HP) at 6,400 rpm
300 kW (328 HP) at 7,200 rpm
Torque output172 Nm (385 lb·ft) at 4,500 rpm
181 Nm (393 lb·ft) at 4,000 rpm
186 Nm (413 lb·ft) at 3,600 rpm
186 Nm (406 lb·ft) at 4,400 rpm
196 Nm (385 lb·ft) at 3,200 rpm
186 Nm (393 lb·ft) at 3,200 rpm
196 Nm (413 lb·ft) at 4,400 rpm
196 Nm (406 lb·ft) at 4,400 rpm
260 Nm (385 lb·ft) at 3,600 rpm
270 Nm (393 lb·ft) at 4,000 rpm
319 Nm (413 lb·ft) at 2,800 rpm
309 Nm (406 lb·ft) at 4,000 rpm
334 Nm (385 lb·ft) at 3,600 rpm
319 Nm (393 lb·ft) at 5,000 rpm
309 Nm (413 lb·ft) at 5,000 rpm
319 Nm (406 lb·ft) at 4,000 rpm
343 Nm (385 lb·ft) at 5,000 rpm
430 Nm (393 lb·ft) at 4,400 rpm
384 Nm (413 lb·ft) at 4,400 rpm
431 Nm (406 lb·ft) at 4,800 rpm
HP per liter62.7
Fuel typeGasoline
Weight, kg (lbs)147 (500) – EJ20G
Fuel consumption, L/100 km (mpg)
for Impreza WRX STI GD
16.7 (11)
9.5 (21)
12.1 (16)
Turbocharger Naturally aspirated
Mitsubishi TD04 (WRX)
Mitsubishi TD05H (WRX/STI)
Mitsubishi TF035 (WRX)
IHI VF34 (STi Spec C Type RA)
IHI VF35 (WRX Type RA)
IHI VF36 (STI Spec-C)
IHI VF42 (STI S203/S204)
2x VF13+VF14
2x VF18+VF19
2x VF25+VF27
2x VF25+VF26
2x VF31+VF32
2x VF32+VF33
Oil consumption , L/1000 km
(qt. per miles)
up to 1.0
(1 qt. per 600 miles)
Recommended engine oil0W-30
Engine oil capacity, L (qt.)4.0 1993-2007
4.2 2007+
4.5 WRX/STI 1993-2000
5.0 WRX/STI 2000-2007
Oil change interval, km (miles)5,000-10,000
Normal engine operating temperature, °C (F)
Engine lifespan, km (miles)
-Official information

250,000+ (150,000)
Tuning, HP
-Max HP
-No life span loss

The engine is installed inSubaru Impreza (WRX/STI)
Subaru Forester
Subaru Legacy
Isuzu Aska

Subaru EJ20 engine reliability, problems and repair

In 1989 Subaru Legacy introduced EJ20 engine which later became the basic for the whole brand. It was the first representative of the legendary EJ series. This 2-liter motor replaced 1.8 liter EA82. EJ20 engine has aluminum flat-four cylinder block, with cast-iron dry sleeves. Its cylinder block deck height is 201 mm. Inside of it crankshaft with a piston stroke of 75 mm is installed, connecting rods length is 130.5 mm, cylinder diameter is 92 mm, piston compression height is 32.7 mm.
On the block two aluminum heads are installed, one camshaft on each and 4 valves on the cylinder. Diameter of intake valves is 36 mm, exhaust valves is 32 mm, valve stem diameter is 6 mm. Camshafts are set in motion with the help of timing belt. The recommended interval of replacement of timing belt for EJ20 is for each 60,000 miles of mileage (100,000 km).

The first version of this engine was called EJ20E and it was installed on Subaru Legacy. It showed the power 125 HP at 5,500 rpm, and torque 172 Nm at 4,500 rpm.
Power of Legacy 2 and Subaru Impreza of the 1st generation was increased to 135 horsepower. 1998-2004 Legacy power was increased to 155 HP. And 2003-2009 Subaru Legacy BL became less powerful – 140 HP at 5,600 rpm.

Besides, 1989-1999 Legacy sometimes have EJ20D engines with DOHC heads. Their power is 150 HP at 6,800 rpm.

Since 1998 Subaru began to produce EJ201/EJ202 engines. These are Phase 2 engines with open deck block, new SOHC heads and lightweight pistons. Also EJ201 and EJ202 used the new intake manifold which is good at low and mid rpm. Such motors show 125 HP at 5,600 rpm. Specially for 2003-2009 Legacy (BL), EJ202 engine was improved: it uses lightweight cylinder block with lightweight sleeves, modified intake manifold and 4-2-1 headers. These improvements allowed to increase power to 138 HP at 5,600 rpm, and the torque increased up to 187 Nm at 4,400 rpm.

EJ203 motor differs in use of MAF-sensor and electronic throttle body.

EJ204 phase 2 engine differs in use of DOHC cylinder block heads. Also EJ204 used variable valve timing system AVCS on intake camshafts, adjustment range is 50 degrees. Power of EJ204 engine is 155 HP. You can find Subaru with EJ204 engine with 180 horsepower, this motor has AVCS system only on the intake cams, and also high compression pistons and modified ECU software.

EJ20 motors gained great popularity due to their turbocharged versions.
Turbocharged EJ20G was the first such engine. It used closed deck block and oil nozzles, low compression pistons (CR=8), two DOHC heads with two camshafts. The capacity of the EJ20G stock fuel injectors is 380 cc. This motor used Mitsubishi TD04 turbocharger, and the maximum boost pressure is 11 psi (0.75 bar).
You can find such motor on Subaru Legacy RS. Its power is 200 HP at 6,000 rpm, and its torque is 260 Nm at 3,600 rpm.
For Subaru Legacy GT, EJ20G engine produces 220 HP at 6,400 rpm, and torque is 270 Nm at 4,000 rpm.
1992-1996 Subaru Impreza WRX Wagon used EJ20G, but with air to air intercooler and lightweight valves .
EJ20G engine for Impreza WRX STI and WRX sedan used Mitsubishi TD05H turbocharger. Max boost pressure for Impreza WRX sedan is 11.5 psi (0.8 bar), and power is 240 HP at 6,000 rpm.
EJ20G motor for 1994-1995 WRX STI ver.1 differs in a kind of intercooler, but boost pressure is the same (11.5 psi / 0.8 bar). Its power is 250 HP at 6,000 rpm.
1994-1996 Impreza WRX Type-RA received the increased boost pressure to 12.5 psi (0.87 bar), and ECU was changed. Power increased up to 260 HP at 6,500 rpm.
EJ20G engine for 1995-1996 Subaru Impreza STI ver. 2 had max boost pressure 13.5 psi (0.93 bar), and power reached 275 HP at 6,500 rpm.

In 1996 EJ20G engine was replaced with new turbocharged EJ20K. Differences between EJ20K and EJ20G are the following: open deck block, TD04 turbocharger, modified intake manifold, increased intercooler, moly coated pistons (compression ratio = 8), new ignition coils and new ECU. EJ20K injector size is 505 cc.
EJ20K engine was installed on 1996-1998 Impreza WRX STI and used IHI RHF5HB turbocharger. The boost pressure was 15.5 psi (1.07 bar), and power reached 280 HP at 6,500 rpm, torque was 343 Nm at 4,000 rpm.

In 1998 they started to manufacture turbocharged Phase 2 engines: EJ205 for Impreza WRX and Forester, and also EJ207 for Impreza WRX STI.
EJ205 and EJ207 engines are equipped with new cylinder heads, the intake ports has been modified, Lightweight pistons were used and new ECU. Specs of camshafts are 256/256, lift 9.27/9.17 mm (8.25/8.61 mm for JDM)
Subaru Impreza WRX with EJ205 engine used Mitsubishi TD04 turbocharger, with max boost pressure 14.5 psi (1.0 bar). Subaru EJ205 engine for Forester had a compression ratio 8.5 and used Mitsubishi TF035 turbocharger. EJ205 engine for 2000-2007 Impreza WRX was equipped with variable valve timing system AVCS on intake camshafts. Also these motors used the intake manifold with TGV valves (Tumble generator valves) that improved ecological index and the increased compression ratio to 9.
EJ207 engine for 1998-2000 Impreza WRX STI has got the modified pistons (compression ratio 8), EJ205 camshafts, new ECU and IHI VF28 turbocharger with max boost pressure 1.1 bars.
2000-2003 Subaru WRX STI used IHI VF30 turbocharger (VF35 turbocharger for JDM WRX Type RA) which created charging pressure 16 psi (1.1 bar). Subaru Impreza WRX STi Spec C Type RA car used IHI VF34 turbocharger.
EJ207 engine for 2003+ Impreza WRX STI used VF37 twin scroll turbocharger. On WRX STI Spec-C versions you will find VF36 twin scroll turbocharger. And WRX STI S203 and S204, EJ207 were equipped with VF42 twin scroll turbocharger.
Besides, JDM Legacy also had twin turbo EJ20: EJ20H, EJ20R, EJ206 and EJ208.

EJ20H engine differs in that it uses DOHC cylinder heads and two VF13 and VF14 turbochargers. Their boost pressure is 13 psi (0.9 bar), and power is 260 horsepower.
Since 1996, they began to produce twin turbo EJ20R which used IHI VF18 and VF19 turbochargers. Power of EJ20R reached 280 HP.

In 1998 twin turbo EJ20 received new heads and were renamed to EJ206, they were equipped with VF25 and VF27 turbochargers.

There was also twin turbo EJ208 engine which used VF25 and VF26 turbochargers in the first generation, then VF31 and VF32 turbochargers were used.
EJ208 rev D phase 3 engine uses VF33 and VF32 turbochargers, and their boost pressure is 13 psi (0.9 bar). Also it was equipped with a new intake manifold, 550 cc fuel injectors and other camshafts.

EJ20 firing order is 1-3-2-4.
Except EJ20, the EJ series included: EJ15, EJ16, EJ18, EJ22 and EJ25.
Since 2012 turbo EJ20 was being replaced by 2.0 liter FA20 engine while naturally aspirated EJ20 were replaced by FB20. 

Subaru EJ20 engine problems and malfunctions

Despite their fabulosity, EJ motors aren’t perfect and have some problems, so let’s discuss them.
1. EJ20 knocking sound. Very often we can hear knocking noise in the 4th cylinder. It is the hottest cylinder and it is cooled worst of all, therefore the piston begins to knock there. At first the engine knocks at cold start, and then all the time.
It is a bad sign, and you solve the problem only by means of overhaul.
2. EJ20 oil leak. Most often leaks appear in camshaft seals and valve cover gaskets. Check them.
3. High oil consumption. This often happens with turbo EJ20, don’t be surprised. Your piston rings failed. You have to change engine oil (each 7500 km) in time and to use what Subaru recommends.
Engine oil is very important for EJ20 turbocharged and even for naturally aspirated. Definitely you don’t want problems with the engine, so use high-quality original engine oil. If your country has problems with qualitative gasoline, then use the best of what it provides. Also you have to drive quietly, to the shop and back, no hard acceleration.
Of course you bought or want to buy Subaru Impreza WRX and STI for absolutely other purposes. Therefore, be ready to its low reliability and overhaul each 50,000-60,000 miles of mileage (100,000 km).
Owners of naturally aspirated EJ20 don’t need to worry, reliability and longevity of your motor is higher and can reach 150,000 mile of mileage (250,000 km) and more.

Subaru EJ20 engine tuning

Tuning guide

There is no sense to increase N/A EJ20 power. Everything we need to do is to buy EJ205 or EJ207 and to make swap. Or to sell the slow Subaru and to buy WRX STI.
Owners of turbocharged EJ205 need to buy only an aluminum 2-row Mishimoto radiator (or something similar), FMIC, STI intake system, VF30 turbocharger, BOV, WRX STI oil pump, new spark plugs, STI fuel injectors, Walbro 255 fuel pump, ACL bearings, boost controller, 3 inch performance exhaust system. After you install these aftermarket parts and will adjust ECU, your EJ205 will show about 300 horsepower.
It is possible to increase EJ20 capacity to 2,123 cc. Stroker kit includes EJ25 crank, H-beam rods, Mahle pistons, ARP head studs.
To get 350+ horsepower from EJ207 engine you need some performance upgrades. Buy a frontal intercooler, a 3-row Mishimoto radiator, Cusco engine mount set, sump baffle plate, TD05-18G turbocharger, HKS BOV, 800 cc fuel injectors, fuel lines, heavy duty timing belt, cold air intake, 12 mm oil pump, oil cooler, equal length headers and 3 inch aftermarket exhaust system. If ECU is adjusted correctly, then Subaru EJ207 will show more than 350+ horsepower. It is a reasonable limit for EJ207 stock internals.
To receive 450-500 horsepower on EJ207, you will be need forged pistons, head porting and all that is written in the article about EJ257 HERE.
Also you can make displacement 2.2 L (2,123 cc) on EJ207 as it is written above.



Sours: http://mywikimotors.com/subaru-ej20/
2002 Subaru WRX First oil change!


Changing the Transmission Oil

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Author: iturgeon

Subaru recommends you replace the transmission and front differential oil every 30,000 miles.

The front differential and gear box share the same oil on the 6 speed manual in the STI.

Generally this is a pretty quick job once you've decided on an oil to use.

Required Tools

Required Parts

Step by Step Instructions

Get the car in the air


Jack up the front of the car, drive it up onto ramps, or if you're lucky enough to have access to a lift, put the car in the air.

Drain The Oil


Remove the transmission oil dip stick. It's located on the passenger side of the transmission near the turbo, under the intercooler. This should be within reach under the hood. Take note while your here, that you'll need a funnel or tubing that can reach down to this dipstick hole in order to fill the transmission back up.

Image 947 from Changing the Transmission Oil on a Subaru Impreza WRX STI


Remove the transmission pan drain plug. This uses a 14mm hex socket. Most of the oil will come out of this hole. You can do either of the two plugs first, order doesn't matter.

Image 938 from Changing the Transmission Oil on a Subaru Impreza WRX STI


Remove the 21mm front differential drain plug. Note that later years use a T-70 torx.

Image 941 from Changing the Transmission Oil on a Subaru Impreza WRX STI

Clean the plugs and Drain Holes


The larger plug from the front differential has a magnet in it. Be sure to clean off all the particles that have accumulated. Pictured below is a dirty magnetic drain plug.

Image 944 from Changing the Transmission Oil on a Subaru Impreza WRX STI


Be sure to wipe down the surfaces around the drain holes. Removing any dirt and grit from these surfaces will keep the threads clean and undamaged.

Image 950 from Changing the Transmission Oil on a Subaru Impreza WRX STI

Re-install the drain plugs


Screw in the differential drain, tightening to 51.6 ft-lb.


Screw in the transmission pan drain plug, tighten to 32.5 ft-lb.

Fill with oil


Fill the oil using a long bendy funnel or a tube. Stick the end of the tube/funnel into the transmission dip stick hole, and pour in your oil.

Everything says the trans takes around 4.5 quarts of oil, however we found that it was over-filled with just 4.25 quarts.

Based on our experience, it's much easier to check and re-check the fill level then it is to remove some oil after over-filling.

Slow down when you've reached 3-4 quarts and check it's level periodically as you go.

Misc Sizes and Specs

  • Transmission drain plug: 14mm at 32.5 ft-lb.
  • Front Differential drain plug: 21mm at 51.6 ft-lb. (note that later years use a T-70 torx)
Sours: https://howtune.com/articles/81-changing-the-transmission-oil-on-a-subaru-impreza-wrx-sti

Now discussing:

Subaru EJ205/EJ207/EJ20G Engine Specs, Problems & Reliability

The new turbo motor EJ20K came out in 1996. It has a redesign intake manifold, bigger intercooler, new pistons (8:1 compression ratio), fuel nozzles 505 cc and new engine control unit. For Subaru WRX, the engine was equipped with the TD04 turbocharger, Subaru WRX STI - IHI RHF5HB turbocharger (1.07 bar).

In 1998, as naturally aspirated engines, the manufacturer started producing the Phase II engines: EJ205 for Impreza WRX and EJ207 for Impreza WRX STI. These engines have new cylinder heads with redeveloped intake channels, lightweight pistons. Camshafts specs for both engines: phases 256/256, valve lift 9.27/9.17 (8.25/8.61 for JDM cars). Impreza WRX EJ205 engine turbochargers are TD04 (1.0 bar). The EJ205 engine for Impreza II was equipped with variable valve timing system AVCS on intake camshafts and TGV system (Tumble generator valves) in the intake manifold for reducing emissions. Compression ratio is 9:1 for this motor.
The EJ207 engine for STI has its pistons (8:1 ratio) and turbocharger. STI GD used IHI VF30 (VF35 for JDM WRX Type RA) which blows 1.1 bars. WRX STi Spec C Type RA has IHI VF34. From 2003, STI has VF37. VF42 was installed on the EJ207 engine for WRX STI S203 and S204.

Every STI engine has forged pistons. The new 2.0-liter FA20DIT engine replaced turbocharged EJ20 engines.

Engine Specs


Gunma Oizumi Plant

Production years

1989-present day

Cylinder block material


Cylinder head material


Fuel system

Fuel injection


Boxer (Flat-4)

Type of internal combustion engine

Four-stroke, turbocharged

Compression Ratio

8.0 (EJ205 WRX/EJ207/EJ20G/EJ20K)
9.0 (EJ205)

Power, hp


Torque, lb ft

198-318 (260-431 Nm)/3600-4800

Engine weight

324 lbs (147 kg) - EJ20G

Engine oil weight

0W-30, 5W-30, 5W-40, 10W-30, 10W-40

Engine oil capacity, liter

4.5 (WRX/STI 1993-2000)
5.0 (WRX/STI 2000-2007)

Oil change interval, mile

9,000 (5,000)


Subaru Impreza WRX, Subaru Impreza WRX STI

EJ20 Turbo Engine Problems and Reliability

Oil consumption. The reason is stuck rings. That is very common for turbocharged EJ20. It is highly recommended to use high-quality engine oil and fuel. The EJ20 turbo engine is more reliable than 2.5-liter turbo engine due to thicker sleeves and better cooling of a cylinder block.

Sours: https://www.motorreviewer.com/engine.php?engine_id=56

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