What Motor Comes in a 1998 Subaru Legacy: Everything You Need to Know

If you are looking for a reliable and efficient engine for your 1998 Subaru Legacy, you have come to the right place. In this article, we will discuss everything you need to know about the motor that comes in a 1998 Subaru Legacy, including its specifications, technical details, compatibility, performance, and efficiency.

Key Takeaways

  • The 1998 Subaru Legacy came with two engine options: the 2.2-liter EJ22 and the 2.5-liter EJ25.
  • The EJ22 engine is known for its reliability and durability, while the EJ25 engine offers more power and performance.
  • When choosing an engine for your 1998 Subaru Legacy, consider factors such as compatibility, performance, and efficiency.

What Motor Comes in a 1998 Subaru Legacy?

The 1998 Subaru Legacy was available with two engine options: the 2.2-liter EJ22 and the 2.5-liter EJ25. Both engines are horizontally opposed, or "flat," four-cylinder engines that are known for their reliability and durability.

2.2-liter EJ22 Engine

The 2.2-liter EJ22 engine was the standard engine option for the 1998 Subaru Legacy. It produces 137 horsepower and 145 lb-ft of torque, which is adequate for day-to-day driving. The engine has a bore and stroke of 96.9 mm x 75 mm and a compression ratio of 9.7:1.

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The EJ22 engine has a reputation for being reliable and durable. With proper maintenance, it can last for well over 200,000 miles. However, some owners have reported issues with the head gaskets and oil leaks in high-mileage engines.

2.5-liter EJ25 Engine

The 2.5-liter EJ25 engine was an optional upgrade for the 1998 Subaru Legacy. It produces 165 horsepower and 162 lb-ft of torque, which is a significant increase in power compared to the EJ22 engine. The engine has a bore and stroke of 99.5 mm x 79 mm and a compression ratio of 10.0:1.

The EJ25 engine offers better performance than the EJ22 engine, making it a popular choice for drivers who want more power and acceleration. However, the EJ25 engine is known for having head gasket issues and oil leaks, especially in higher mileage engines.

What to Look for in a 1998 Subaru Legacy Engine?

When choosing an engine for your 1998 Subaru Legacy, there are several factors to consider.

Compatibility

First and foremost, you need to ensure that the engine you choose is compatible with your vehicle. The 1998 Subaru Legacy was designed to work with either the EJ22 or EJ25 engine, so you should stick with one of these options.

Performance

If you want better performance and acceleration, you may want to consider the EJ25 engine over the EJ22 engine. However, keep in mind that the EJ25 engine is known for having head gasket issues and oil leaks, especially in higher mileage engines.

Efficiency

If fuel efficiency is a priority for you, the EJ22 engine may be a better choice. It produces less power than the EJ25 engine, but it is also more fuel-efficient.

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Maintenance

Regardless of which engine you choose, proper maintenance is essential to keep your Subaru Legacy running smoothly. Make sure to follow the manufacturer’s recommended maintenance schedule and address any issues promptly to avoid more significant problems down the line.

Best Engine Options for a 1998 Subaru Legacy

If you are looking to replace your 1998 Subaru Legacy engine or upgrade to a more powerful option, you have several options to choose from.

EJ22 Engine

The EJ22 engine is a reliable and durable option that can last for well over 200,000 miles with proper maintenance. If you prioritize reliability and longevity over performance, the EJ22 engine may be the best choice for you.

EJ25 Engine

The EJ25 engine is a more powerful option that offers better performance and acceleration than the EJ22 engine. However, it is also known for having head gasket issues and oil leaks, especially in higher mileage engines. If you prioritize performance over reliability, the EJ25 engine may be the best choice for you.

Factors Affecting the Performance of the Engine

Several factors can affect the performance of your 1998 Subaru Legacy engine, including:

  • Maintenance: Proper maintenance is essential to keep your engine running smoothly and prevent issues that can affect performance.
  • Fuel quality: Using high-quality fuel can improve the performance and efficiency of your engine.
  • Driving style: Aggressive driving and excessive idling can negatively impact engine performance and efficiency.
  • Environmental factors: Extreme temperatures or weather conditions can affect engine performance and efficiency.

FAQ

How long do Subaru Legacy engines last?

With proper maintenance, a Subaru Legacy engine can last for well over 200,000 miles. However, some owners have reported issues with head gaskets and oil leaks in higher mileage engines.

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How much does it cost to replace a Subaru Legacy engine?

The cost to replace a Subaru Legacy engine can vary depending on several factors, including the engine type, labor costs, and any additional repairs that may be needed. On average, you can expect to pay between $3,000 and $5,000 for a replacement engine.

Can I use a different engine in my 1998 Subaru Legacy?

While it is possible to use a different engine in your 1998 Subaru Legacy, it can be challenging and may require significant modifications to your vehicle. It is generally best to stick with the same engine type that was designed for your vehicle.

What is the difference between the EJ22 and EJ25 engines?

The EJ22 engine is a 2.2-liter engine that produces 137 horsepower, while the EJ25 engine is a 2.5-liter engine that produces 165 horsepower. The EJ25 engine offers better performance and acceleration, but it is also known for having head gasket issues and oil leaks. The EJ22 engine is a reliable and durable option that is more fuel-efficient than the EJ25 engine.

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Billy Covington

With a passion for all things automotive, Billy is our go-to expert on Subaru performance upgrades and modifications. He's been featured in several car magazines and blogs, and his extensive knowledge and expertise make him a valuable member of our team. When he's not working on cars, he enjoys playing guitar and writing music.

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