EJ205 and EJ20T AVCS Subaru Turbo Engines

Buy EJ205 AVCS SUBARU WRX FORESTER LEGACY JDM TURBO ENGINE EJ20T for sale online,  The Subaru EJ series of engines have become iconic in the automotive world, particularly for performance-oriented models like the WRX, Forester, and Legacy. Within the EJ family, the EJ205 and EJ20T engines are prominent turbocharged variants that utilize Subaru’s Advanced Variable Valve Control System (AVCS). These engines have powered some of Subaru’s most popular and high-performance vehicles, offering a combination of reliability, power, and driving excitement. In this article, we’ll take a detailed look at the EJ205 and EJ20T engines, how they work, and their role in Subaru’s turbocharged lineup.

What are the EJ205 and EJ20T Engines?

Both the EJ205 and EJ20T engines are part of Subaru’s EJ series of 4-cylinder, horizontally opposed (boxer) engines, widely known for their balance, low center of gravity, and performance. They share a common platform but differ slightly in their specifications and applications.

1. EJ205: The EJ205 is a 2.0-liter turbocharged engine that was primarily found in Subaru’s WRX and other sport-oriented models. It features Subaru’s AVCS (Advanced Variable Valve Control System), which optimizes engine performance by adjusting the timing of the intake camshaft. This engine is known for its quick response and high-revving capabilities, providing strong turbocharged power with a smooth driving experience.

2. EJ20T: The EJ20T is a similar engine but with some differences in its tuning and applications. It is commonly found in the Subaru Legacy, Forester, and early WRX models. The engine’s turbocharging system and the AVCS allow it to deliver efficient power across the rev range, making it suitable for both daily driving and high-performance applications.

Key Features of the EJ205 and EJ20T Engines

• Displacement: Both engines have a 2.0-liter displacement, but the EJ205 has been fine-tuned for higher performance in the WRX, whereas the EJ20T is often found in more diverse Subaru models, including family-oriented ones like the Legacy and Forester.

• Turbocharging: These engines use a turbocharger to enhance engine efficiency and power. The turbochargers help achieve greater air intake pressure, allowing the engine to produce more power from a smaller displacement.

• AVCS (Advanced Variable Valve Control System): Subaru’s AVCS system allows for variable timing of the intake valves, enhancing both power output and fuel efficiency. AVCS plays a crucial role in improving engine performance across the rev range, particularly at higher RPMs where turbocharged engines often need better management.

• Cooling: Both engines are equipped with water-to-air intercoolers, which cool the intake air to improve turbo performance and prevent heat soak. This feature is essential for maintaining consistent power output, particularly under high-performance driving conditions.

• Strengthened Internals: Given the turbocharged nature of these engines, Subaru has designed the EJ205 and EJ20T with robust internal components, including stronger pistons, rods, and crankshafts, to handle the increased pressures and temperatures associated with turbocharging.

Applications of the EJ205 and EJ20T Engines

The EJ205 and EJ20T engines have been used in a variety of Subaru vehicles, providing an excellent balance of performance and reliability.

• Subaru WRX: The EJ205 is commonly found in earlier versions of the Subaru WRX, a performance-oriented sedan that has become synonymous with rally racing and street performance. The EJ205 engine provides ample power for both the daily driver and the enthusiast, making the WRX a popular choice for those looking for turbocharged performance.

• Subaru Forester: Both engines have also found a home in the Subaru Forester, a compact crossover. While the Forester isn’t as performance-focused as the WRX, the EJ20T still provides enough power to make it fun to drive, especially for those who want a turbocharged vehicle with the capability to handle a variety of road conditions.

• Subaru Legacy: The EJ20T has been used in the Subaru Legacy, especially in turbocharged variants aimed at offering both performance and practicality. The Legacy combines a comfortable ride with the performance benefits of the turbocharged engine, making it a well-rounded option for those who need both space and power.

Performance and Tuning Potential

Both the EJ205 and EJ20T engines are highly regarded by car enthusiasts for their tuning potential. With their solid block design and turbocharged nature, these engines are often modified to produce higher horsepower and torque. Performance parts such as larger turbochargers, upgraded intercoolers, and stronger internal components can be used to push the limits of these engines, making them popular for aftermarket modifications.

Common Issues with the EJ205 and EJ20T Engines

While these engines are known for their reliability, there are a few common issues that owners may encounter:

1. Oil Consumption: Turbocharged engines are more prone to oil consumption, especially if the engine has been heavily modified or poorly maintained. Regular oil changes and the use of high-quality oil can help mitigate this issue.

2. Turbocharger Failure: Like many turbocharged engines, the EJ205 and EJ20T engines may experience turbocharger failure over time, especially if the turbo has been pushed beyond its limits or not properly maintained.

3. Head Gasket Leaks: Both engines have been known to suffer from head gasket leaks if they overheat or if the coolant system isn’t properly maintained. Ensuring the engine runs at the correct temperature and regularly checking the coolant levels can help prevent this issue.

4. Timing Belt Issues: As with many Subaru engines, the timing belt needs to be replaced at regular intervals (usually every 100,000 miles) to avoid catastrophic engine damage.

FAQs on the EJ205 and EJ20T Engines

1. What is the difference between the EJ205 and EJ20T engines? The EJ205 is found primarily in the WRX and has been tuned for performance, while the EJ20T is used in models like the Forester and Legacy. Both engines share similar technology, but the EJ205 is generally more performance-oriented.

2. Can I upgrade the turbo on the EJ205 or EJ20T? Yes, both engines can be upgraded with larger turbos to increase power output. However, it’s important to also upgrade supporting components like the intercooler, fuel system, and exhaust to ensure the engine operates reliably at higher boost levels.

3. How much horsepower can the EJ205 and EJ20T handle? Stock versions of the EJ205 and EJ20T typically produce between 200 and 250 horsepower, depending on the model and year. With proper modifications and tuning, these engines can handle up to 400 horsepower or more, though this requires strengthening the internals and supporting mods.

4. Is the EJ205 or EJ20T a reliable engine? Yes, both engines are known for their reliability when properly maintained. Regular oil changes, turbo maintenance, and avoiding excessive modifications are key to keeping them running smoothly.

5. What vehicles came with the EJ205 and EJ20T engines? The EJ205 was primarily used in the Subaru WRX, while the EJ20T appeared in the Subaru Legacy, Forester, and earlier WRX models.

6. How do I maintain my EJ205 or EJ20T engine? Regular maintenance is crucial for the longevity of these engines. Ensure you perform regular oil changes, monitor the turbocharger’s health, replace the timing belt when necessary, and check for head gasket leaks.

7. Are these engines good for tuning? Yes, both the EJ205 and EJ20T engines are excellent for tuning, offering a solid foundation for performance upgrades like bigger turbos, improved fuel systems, and upgraded internals.

Conclusion

The EJ205 and EJ20T engines represent the backbone of Subaru’s performance lineup, providing turbocharged power and technological innovation in popular models like the WRX, Forester, and Legacy. With their AVCS systems, reliability, and strong tuning potential, these engines have earned a devoted following among car enthusiasts. By maintaining the engine properly and carefully considering performance upgrades, owners can enjoy many years of reliable and exhilarating driving experiences.