Table of Contents
The Subaru EJ255 engine is known for its performance potential, especially when tuned to produce over 400 horsepower. However, achieving this power level requires significant upgrades to the clutch and drivetrain components to ensure reliability and optimal handling. In this article, we will explore the best clutch and drivetrain upgrades for handling 400+ hp in EJ255 builds.
Understanding the EJ255 Engine
The EJ255 is a turbocharged flat-four engine that powers several Subaru models. Its robust design allows for considerable tuning potential, making it a favorite among performance enthusiasts. However, with increased power comes the need for improved drivetrain components to handle the additional stress.
Why Upgrade the Clutch?
A stock clutch may struggle to handle the torque produced by a 400+ hp EJ255. Upgrading the clutch is essential to prevent slippage, ensure smooth engagement, and maintain drivability. Here are the key reasons to consider a clutch upgrade:
- Increased Torque Capacity: High-performance clutches can handle the increased torque output.
- Improved Engagement: A performance clutch offers better bite and engagement for spirited driving.
- Durability: Upgraded clutches are designed to withstand the rigors of high-power applications.
Top Clutch Options for EJ255 Builds
- Exedy Stage 1 Clutch Kit: This kit offers a good balance of performance and streetability, making it ideal for daily drivers.
- ACT Heavy Duty Clutch Kit: Designed for high torque applications, this clutch provides excellent holding power and durability.
- Spec Stage 2 Clutch: This option is great for those looking for a more aggressive setup without sacrificing drivability.
- Clutch Masters FX400: A popular choice among racers, this clutch can handle extreme power levels and offers a smooth engagement.
Drivetrain Upgrades for Enhanced Performance
Along with a robust clutch, upgrading other drivetrain components is crucial for handling high horsepower. Here are some essential upgrades to consider:
- Lightweight Flywheel: A lightweight flywheel reduces rotational mass, improving throttle response and acceleration.
- Short-throw Shifter: This upgrade provides quicker shifts, enhancing the overall driving experience.
- Driveshaft Upgrade: A stronger driveshaft can handle increased power and torque, reducing the risk of failure.
- Rear Differential Upgrade: A limited-slip differential (LSD) improves traction and handling during aggressive driving.
Choosing the Right Components
Selecting the right clutch and drivetrain components requires careful consideration of your driving style and goals. Here are some factors to keep in mind:
- Power Goals: Ensure that the clutch and drivetrain upgrades match your power output expectations.
- Driving Conditions: Consider whether you will be using your car for daily driving, racing, or a mix of both.
- Budget: High-quality components can be expensive, so set a budget that allows for reliable upgrades.
Installation and Maintenance Tips
Proper installation and maintenance of your upgraded components are vital for longevity and performance. Here are some tips:
- Professional Installation: If you’re not experienced, consider hiring a professional to install your upgrades.
- Regular Inspections: Check your clutch and drivetrain components regularly for signs of wear or damage.
- Fluid Changes: Change transmission and differential fluids as recommended to ensure optimal performance.
Conclusion
Upgrading the clutch and drivetrain in your EJ255 build is essential for handling 400+ hp effectively. By choosing the right components and ensuring proper installation and maintenance, you can enjoy a reliable and high-performing vehicle. Whether you’re on the track or the street, these upgrades will enhance your driving experience and ensure that your Subaru can handle the power you crave.