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The Subaru WRX GD series has gained a reputation for its performance and tuning potential. However, as power levels increase, the stock transmission components may struggle to handle the additional stress. Upgrading the transmission is essential for ensuring reliability and performance. In this article, we will explore two key upgrades: clutch packs and short shifters.
Understanding the GD WRX Transmission
The GD WRX, produced between 2001 and 2007, features a 5-speed manual transmission that is known for its engaging driving experience. However, as enthusiasts push the limits of their vehicles, the need for upgrades becomes apparent. The stock clutch and shifting mechanism may not be sufficient for high power applications.
Clutch Packs: Enhancing Power Handling
One of the most significant upgrades for the GD WRX transmission is the clutch pack. A performance clutch pack can handle higher torque and provide better engagement, which is crucial for high-powered applications.
Benefits of Upgrading Clutch Packs
Upgrading the clutch pack offers several benefits:
- Increased Torque Capacity: Performance clutch packs are designed to handle higher torque levels, reducing the risk of slippage.
- Improved Engagement: Upgraded clutches provide a more positive engagement, enhancing driver confidence during shifts.
- Heat Resistance: Many performance clutches are built to withstand higher temperatures, which is essential for track use.
- Longevity: Higher quality materials often lead to a longer lifespan compared to stock components.
Types of Clutch Packs
When considering a clutch pack upgrade, there are several options available:
- Organic Clutch Packs: These provide a good balance of performance and drivability, suitable for street use.
- Full Face Clutch Packs: Designed for high-performance applications, offering maximum grip and torque handling.
- Multi-Plate Clutch Packs: Ideal for extreme power applications, allowing for higher torque capacity in a compact design.
Short Shifters: Improving Shift Feel and Speed
Another popular upgrade for the GD WRX transmission is the short shifter. This modification can significantly improve the driving experience by reducing the distance required to change gears.
Advantages of Short Shifters
Short shifters provide several key advantages:
- Faster Shifts: The reduced throw distance allows for quicker gear changes, enhancing overall performance.
- Improved Feedback: Many short shifters offer a more direct feel, giving drivers better feedback during gear changes.
- Enhanced Control: A more precise shifting mechanism can lead to better control during spirited driving.
Choosing the Right Short Shifter
When selecting a short shifter for the GD WRX, consider the following:
- Build Quality: Look for shifters made from high-quality materials for durability.
- Adjustability: Some short shifters offer adjustable throw lengths, allowing for customization to suit your driving style.
- Installation: Ensure the shifter is designed for easy installation and compatibility with your specific WRX model.
Installation Considerations
Both clutch pack and short shifter installations require careful attention to detail. It is recommended to follow manufacturer instructions and consider professional installation if you are not experienced with transmission work.
Tools Needed
- Socket set
- Torque wrench
- Jack and jack stands
- Clutch alignment tool (for clutch installation)
Steps for Installation
While specific steps may vary depending on the components chosen, here is a general outline for installation:
- Remove the transmission from the vehicle.
- Replace the stock clutch pack with the new performance clutch.
- Install the short shifter according to the manufacturer’s instructions.
- Reinstall the transmission and ensure all connections are secure.
Conclusion
Upgrading the clutch packs and installing a short shifter are two effective ways to enhance the power handling capabilities of the GD WRX transmission. These modifications not only improve performance but also enhance the overall driving experience. Whether you are a daily driver or a track enthusiast, investing in these upgrades can lead to a more enjoyable and reliable Subaru WRX.