The Subaru EJ205 engine is a 2.0L turbocharged engine that was introduced in the early 2000s. It is a four-cylinder engine with horizontally opposed pistons, which is a trademark of Subaru engines. The EJ205 engine was used in many Subaru models, including the WRX and the Forester XT.
Engine specifications for Subaru EJ205 2.0 turbo
Stock modification
| Displacement | 1994 cc |
| Power system | Injector |
| Engine power | 170 – 180 hp |
| Torque | 240 – 250 Nm |
| Cylinder block | Aluminum H4 |
| Cylinder head | Aluminum 16v |
| Cylinder diameter | 92 mm |
| Stroke | 75 mm |
| Compression ratio | 8.0 |
| Engine features | DOHC |
| Hydraulic compensators | No |
| Timing Chain/Belt | Belt |
| Variable Valve Timing (VVT) | No |
| Turbocharger | Yes |
| Oil capacity/Recommended oil | 4.7 l 5W-30 |
| Fuel type | Medium/Plus |
| Euro class | EURO 2/3 |
| Average lifespan | 230 000 km |
Sport modification
| Displacement | 1994 cc |
| Power system | Injector |
| Engine power | 220 – 230 hp |
| Torque | 290 – 300 Nm |
| Cylinder block | Aluminum H4 |
| Cylinder head | Aluminum 16v |
| Cylinder diameter | 92 mm |
| Stroke | 75 mm |
| Compression ratio | 8.5 – 9.0 |
| Engine features | DOHC |
| Hydraulic compensators | No |
| Timing Chain/Belt | Belt |
| Variable Valve Timing (VVT) | No |
| Turbocharger | AVCS |
| Oil capacity/Recommended oil | 4.7 l 5W-30 |
| Fuel type | Medium/Plus |
| Euro class | EURO 2/3 |
| Average lifespan | 210 000 km |
The catalog weight of the EJ205 engine is 160 kg.
Engine number EJ205 is located on the joint between the block and the box.
Oil specs for the Subaru EJ205
The table with the engine oil specifications for the Subaru EJ205:
| Specification | Description |
|---|---|
| Oil Type | Synthetic 5W-30 or 5W-40 |
| Oil Capacity (with filter) | 4.2 US quarts (4.0 liters) |
| Oil Capacity (without filter) | 3.7 US quarts (3.5 liters) |
| Oil Change Interval | Every 7,500 miles or 6 months (whichever comes first) |
| Recommended Brands | Subaru Genuine Oil, Mobil 1, Royal Purple, AMSOIL, Valvoline, Castrol |
It’s important to note that the oil capacity can vary slightly depending on the specific year and model of your Subaru EJ205 engine. Be sure to consult your owner’s manual or a certified Subaru mechanic for the most accurate information.
Fuel economy of the Subaru EJ205
The table with the fuel consumption specifications for the Subaru EJ205:
| Specification | Description |
|---|---|
| Fuel Type | Premium unleaded gasoline (91 octane or higher) |
| City Fuel Economy | 20-21 miles per gallon (mpg) |
| Highway Fuel Economy | 25-27 mpg |
| Combined Fuel Economy | 22-23 mpg |
Again, it’s important to note that the fuel consumption can vary depending on the specific year, model, and driving conditions of your Subaru EJ205 engine. These numbers are just estimates and should be used as a general guide. Your actual fuel economy may vary.
Which cars have the EJ205 2.0 l
| Impreza 1 (GC) | 1998 – 2000 |
| Impreza 2 (GD) | 2000 – 2007 |
| Forester 1 (SF) | 1998 – 2002 |
| Forester 2 (SG) | 2002 – 2007 |
| 9-2X | 2005 – 2006 |
The tuning options for the Subaru EJ205 engine
The table outlining some of the most popular tuning options for the Subaru EJ205 engine, along with their estimated costs and potential power gains:
| Tuning Option | Estimated Cost | Potential Power Gains |
|---|---|---|
| Cold Air Intake | $150 – $300 | 5 – 10 horsepower |
| Cat-Back Exhaust | $300 – $700 | 5 – 10 horsepower |
| Headers | $400 – $800 | 5 – 15 horsepower |
| ECU Tune / Engine Management | $500 – $1500 | 15 – 50+ horsepower |
| Upgraded Turbocharger | $1000 – $3000 | 50 – 100+ horsepower |
| Fuel System Upgrade | $500 – $1000 | 20 – 50 horsepower |
| Intercooler Upgrade | $400 – $800 | 10 – 20 horsepower |
| High-Performance Camshafts | $800 – $1500 | 15 – 30 horsepower |
It’s important to note that these are just estimated costs and power gains, and the actual cost and results may vary depending on the specific parts and tuning methods used, as well as the condition and modifications of the vehicle. It’s always a good idea to consult with a reputable tuning shop or performance parts manufacturer for specific recommendations and advice on tuning your Subaru EJ205 engine.
Reliability
Subaru EJ205 engines are generally considered to be reliable. They have a good reputation for their durability and longevity. However, like any other engine, the EJ205 engine is not without its problems.
Maintenance
Regular maintenance is key to ensuring the longevity of the Subaru EJ205 engine. Subaru recommends oil changes every 3,750 miles or every 3 months, whichever comes first. It is also important to check the oil level frequently to make sure it is not too low.
The table with the maintenance cost and intervals for the Subaru EJ205:
| Maintenance Item | Interval | Cost (USD) |
|---|---|---|
| Oil Change | Every 7,500 miles or 6 months | $60-$100 |
| Engine Air Filter Replacement | Every 30,000 miles or 3 years | $20-$40 |
| Cabin Air Filter Replacement | Every 30,000 miles or 3 years | $20-$40 |
| Spark Plug Replacement | Every 60,000 miles or 6 years | $100-$200 |
| Timing Belt Replacement | Every 105,000 miles or 10 years | $500-$800 |
| Water Pump Replacement (with Timing Belt) | Every 105,000 miles or 10 years | $200-$400 |
| Brake Fluid Flush | Every 30,000 miles or 3 years | $100-$150 |
| Transmission Fluid Change | Every 30,000 miles or 3 years | $150-$250 |
| Differential Fluid Change | Every 30,000 miles or 3 years | $100-$150 |
It’s important to note that the maintenance cost can vary depending on your location, the specific year and model of your Subaru EJ205 engine, and the specific repair shop you use. These numbers are just estimates and should be used as a general guide. Consult your owner’s manual or a certified Subaru mechanic for the most accurate information on maintenance intervals and costs for your vehicle.
Head Gasket Failure
One of the most common problems with the Subaru EJ205 engine is head gasket failure. This problem is not unique to the EJ205 engine and is a problem that affects many Subaru engines. The head gasket is responsible for sealing the cylinder head to the engine block. When the head gasket fails, coolant can leak into the engine or oil can leak into the coolant. This can cause serious engine damage if not addressed promptly.
Piston Ring Failure
Another common problem with the EJ205 engine is piston ring failure. This can cause low compression and can lead to engine misfires. The symptoms of piston ring failure include excessive oil consumption and blue smoke coming out of the exhaust.
Turbocharger Failure
The EJ205 engine is a turbocharged engine, and the turbocharger can fail over time. Symptoms of turbocharger failure include loss of power and an unusual noise coming from the engine.
Timing Belt Failure
The timing belt is an important component of the EJ205 engine. If the timing belt fails, the engine can suffer serious damage. Subaru recommends replacing the timing belt every 105,000 miles or 8 years, whichever comes first.
Common Problems
In addition to the problems mentioned above, there are other common problems associated with the Subaru EJ205 engine.
Oil Leaks
Oil leaks are a common problem with the EJ205 engine. The most common causes of oil leaks are a faulty valve cover gasket or a leaking oil pump.
Coolant Leaks
Coolant leaks are also a common problem with the EJ205 engine. The most common cause of coolant leaks is a faulty water pump.
Knock Sensor Failure
The knock sensor is responsible for detecting engine knock and adjusting the timing accordingly. When the knock sensor fails, the engine can suffer from a lack of power and poor fuel economy.
Ignition Coil Failure
Ignition coil failure is another common problem with the EJ205 engine. Symptoms of ignition coil failure include engine misfires and loss of power.
Top questions
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How often should I change the oil in my Subaru EJ205 engine?
Subaru recommends oil changes every 3,750 miles or every 3 months, whichever comes first. It is important to follow this recommendation to ensure the engine’s longevity and prevent problems like piston ring failure and oil leaks.
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How can I prevent head gasket failure in my EJ205 engine?
Regular maintenance is key to preventing head gasket failure. Make sure to follow the recommended maintenance schedule and check the oil level frequently. If you notice any symptoms of head gasket failure, such as oil or coolant leaks, get it checked by a qualified mechanic right away.
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Can turbocharger failure be prevented?
Turbocharger failure is a common problem with any turbocharged engine, and it is not always preventable. However, you can reduce the risk of turbocharger failure by following the recommended maintenance schedule and keeping the engine well-maintained.
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How do I know if my EJ205 engine has a timing belt or a timing chain?
The Subaru EJ205 engine has a timing belt, not a timing chain. Subaru recommends replacing the timing belt every 105,000 miles or 8 years, whichever comes first, to prevent serious engine damage.
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Can I drive my Subaru with a faulty knock sensor?
It is not recommended to drive your Subaru with a faulty knock sensor. A faulty knock sensor can cause serious engine damage if not addressed promptly. If you notice any symptoms of knock sensor failure, such as engine knock or a lack of power, get it checked by a qualified mechanic right away.
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