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The Subaru WRX is known for its performance and tuning potential. To reach the coveted 500 horsepower mark, upgrading the internals is essential. This article will explore the best pistons, rods, and crankshafts that can help you achieve this goal.
Why Upgrade Internals?
Upgrading the internal components of your WRX engine is crucial when aiming for higher horsepower. Stock components may not withstand the increased power and stress. Here are some reasons to consider upgrading:
- Increased durability under high boost conditions.
- Improved engine response and efficiency.
- Better performance and reliability during aggressive driving.
Best Pistons for 500 HP WRX
Pistons play a vital role in the engine’s performance. Selecting the right pistons can help manage the increased power output effectively. Here are some top choices:
- Wiseco Pistons: Known for their strength and lightweight design, Wiseco pistons are a popular choice among tuners.
- CP Pistons: Offering excellent thermal stability, CP pistons are designed for high-performance applications.
- Manley Pistons: These pistons provide a good balance of strength and weight, making them suitable for high-horsepower builds.
Top Rods for Enhanced Performance
Connecting rods are critical for transferring power from the pistons to the crankshaft. Upgrading to stronger rods can prevent failures under high stress. Consider these options:
- Manley H-Beam Rods: These rods are known for their strength and reliability, making them a favorite for high-horsepower builds.
- CP Carillo Rods: With exceptional durability, CP Carillo rods are designed for serious performance enthusiasts.
- Eagle Rods: Offering a good balance of performance and cost, Eagle rods are a solid choice for many tuners.
Choosing the Right Crankshaft
The crankshaft is the heart of the engine, converting the linear motion of the pistons into rotational energy. Selecting a robust crankshaft is essential for handling increased power. Here are some top recommendations:
- OEM STi Crankshaft: A reliable option that can handle increased power without significant modifications.
- Pauter Crankshafts: Known for their strength and lightweight design, Pauter crankshafts are suitable for high-performance applications.
- Manley Crankshafts: These crankshafts are built for high horsepower, providing durability and performance.
Considerations for Upgrading Internals
When upgrading the internals of your WRX, several factors should be considered to ensure compatibility and performance:
- Boost Levels: Ensure that your chosen components can handle the boost levels you plan to run.
- Engine Management: Upgrading your engine management system is crucial to optimize performance and reliability.
- Supporting Modifications: Consider other upgrades such as turbochargers, fuel systems, and intercoolers to complement your internal upgrades.
Conclusion
Upgrading the internals of your WRX is a vital step in achieving 500 horsepower. By selecting the right pistons, rods, and crankshaft, you can ensure your engine performs reliably under increased stress. Always consider your overall build and supporting modifications to maximize your WRX’s potential.