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The Subaru EJ25 engine is a popular choice among car enthusiasts, especially those looking to boost their performance through turbocharging or supercharging. However, with increased power comes the need for reliable components, particularly the head gasket. Upgrading to a high-quality head gasket is essential for maintaining engine integrity and performance. In this article, we will explore the best head gasket upgrades for the boosted Subaru EJ25, comparing various brands and their cost-effectiveness.
Understanding the Importance of Head Gaskets
Head gaskets serve a critical role in sealing the engine’s combustion chambers and preventing coolant and oil from mixing. In a boosted engine, the head gasket must withstand higher pressures and temperatures, making it crucial to select the right upgrade.
Top Head Gasket Brands for Subaru EJ25
- Cometic Gasket: Known for their multi-layer steel (MLS) gaskets, Cometic provides excellent durability and resistance to blowouts.
- Subaru OEM: The original equipment manufacturer gaskets are designed specifically for Subaru engines, ensuring a perfect fit and reliable performance.
- Fel-Pro: Fel-Pro gaskets are popular for their affordability and solid performance, making them a good choice for budget-conscious builders.
- Gasket Technologies: Their gaskets are engineered for high-performance applications, offering enhanced sealing capabilities.
Comparing Cost-Effectiveness
When choosing a head gasket, cost-effectiveness is a crucial factor. Below is a comparison of the average prices and benefits of each brand.
- Cometic Gasket: Prices range from $100 to $200. Offers exceptional sealing and longevity, ideal for high horsepower applications.
- Subaru OEM: Typically priced between $80 and $150. Provides reliability but may not handle extreme boost levels as well as aftermarket options.
- Fel-Pro: Generally costs between $50 and $100. A budget-friendly option that may require more frequent replacements under high boost.
- Gasket Technologies: Prices are around $120 to $180. Known for high-performance applications, offering a good balance between cost and durability.
Factors to Consider When Upgrading
Before selecting a head gasket, consider the following factors:
- Boost Level: Higher boost levels require more robust gaskets to prevent failure.
- Material: MLS gaskets are generally preferred for boosted applications due to their strength and heat resistance.
- Engine Modifications: Consider any additional modifications that may affect gasket performance.
- Installation Quality: Proper installation is crucial for any gasket to perform well, regardless of brand.
Installation Tips for Head Gaskets
Installing a new head gasket can be a challenging task. Follow these tips to ensure a successful installation:
- Clean Surfaces: Ensure all mating surfaces are clean and free of debris.
- Use Proper Torque Specs: Follow the manufacturer’s torque specifications for the head bolts to avoid warping.
- Use Gasket Sealant: Some gaskets may benefit from the application of a suitable gasket sealant.
- Check for Warpage: Inspect the cylinder head for warpage before installation and resurface if necessary.
Conclusion
Choosing the right head gasket for your boosted Subaru EJ25 is essential for ensuring performance and reliability. Consider the brands discussed, their cost-effectiveness, and the factors that influence your decision. With the right head gasket, you can enjoy the full potential of your Subaru while minimizing the risk of engine failure.