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The BMW E39 M5 is a legend among performance enthusiasts, known for its powerful V8 engine and precise handling. To further enhance its performance, many owners consider upgrades such as a lightweight flywheel, short shifter, and performance clutch. These modifications can significantly improve throttle response, shifting speed, and overall driving experience.
Understanding the Components
Before diving into the installation process, it’s essential to understand what each component does and how they contribute to the overall performance of the E39 M5.
Lightweight Flywheel
A lightweight flywheel reduces the rotational mass of the engine, allowing it to rev more freely. This results in quicker acceleration and improved throttle response. The reduction in weight also helps to decrease engine load, enhancing overall performance.
Short Shifter
A short shifter decreases the distance needed to change gears, allowing for faster and more precise shifts. This can improve the driving experience, especially during spirited driving or track days.
Performance Clutch
A performance clutch is designed to handle increased power and torque, providing better grip and faster engagement. This is crucial for maximizing the performance benefits of the other upgrades.
Installation Process
Installing a lightweight flywheel, short shifter, and performance clutch can be a rewarding project. Below are the steps to guide you through the installation process.
Tools and Materials Needed
- Jack and jack stands
- Socket set
- Torque wrench
- Flywheel alignment tool
- Short shifter kit
- Performance clutch kit
Step-by-Step Installation
Follow these steps for a successful installation:
- Prepare the Vehicle: Ensure the car is on a level surface. Disconnect the battery and raise the vehicle using a jack and jack stands.
- Remove the Transmission: Unbolt the driveshaft and disconnect any wiring. Remove the transmission mount bolts and carefully lower the transmission.
- Remove the Old Flywheel: Unbolt the existing flywheel and remove it from the crankshaft. Clean the mounting surface before installation.
- Install the Lightweight Flywheel: Position the new flywheel and secure it with the bolts. Use a torque wrench to tighten to the manufacturer’s specifications.
- Install the Performance Clutch: Align the clutch disc with the flywheel using the alignment tool. Secure the clutch pressure plate with bolts and torque to specifications.
- Install the Short Shifter: Follow the manufacturer’s instructions to install the short shifter. Ensure all components are correctly aligned.
- Reinstall the Transmission: Carefully lift the transmission back into place, reconnecting all wiring and driveshaft components.
- Reconnect the Battery: Once everything is reassembled, reconnect the battery and lower the vehicle.
Testing the Upgrades
After installation, it’s crucial to test the upgrades to ensure everything is functioning correctly. Start the engine and let it idle for a few minutes. Check for any unusual noises or vibrations. Take the car for a test drive to experience the improvements in throttle response and shifting performance.
Conclusion
Upgrading your E39 M5 with a lightweight flywheel, short shifter, and performance clutch can significantly enhance its performance. These modifications not only improve acceleration and shifting speed but also contribute to a more engaging driving experience. With proper installation and testing, you can enjoy the full potential of your M5.