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The E30 BMW is a classic platform that enthusiasts love to modify, especially when swapping in the M50 engine. One of the most significant upgrades that can enhance the handling and cornering capabilities of this vehicle is the installation of coilovers and spherical bearings. In this article, we will explore the process of upgrading your E30’s suspension to improve performance on the track and the street.
Understanding the Importance of Suspension Upgrades
Upgrading the suspension on your E30 M50 swap is crucial for several reasons:
- Improved Handling: Coilovers allow for adjustable ride height and damping, which can significantly improve cornering performance.
- Better Stability: Spherical bearings reduce play in the suspension components, enhancing the vehicle’s stability during aggressive maneuvers.
- Customization: Coilovers offer a range of settings to tailor the suspension to your driving style and preferences.
Choosing the Right Coilovers
When selecting coilovers for your E30 M50 swap, consider the following factors:
- Brand Reputation: Choose a reputable brand known for quality and performance.
- Adjustability: Look for coilovers that offer both height and damping adjustments.
- Spring Rates: Select spring rates that match your intended use, whether it’s daily driving or track-focused.
Installing Coilovers on Your E30
Installing coilovers is a straightforward process, but it requires some mechanical skills and tools. Follow these steps for a successful installation:
- Gather Tools: You will need a jack, jack stands, socket set, wrenches, and a spring compressor.
- Remove the Old Suspension: Start by lifting the car and removing the wheels. Unbolt the old struts and springs from the vehicle.
- Install the Coilovers: Assemble the coilovers according to the manufacturer’s instructions, then install them in place of the old suspension components.
- Adjust Ride Height: Set the desired ride height before tightening everything down. Ensure that both sides are equal for balanced handling.
- Reinstall Wheels: Once the coilovers are installed and adjusted, put the wheels back on and lower the car.
Understanding Spherical Bearings
Spherical bearings are an excellent upgrade for the E30’s suspension. They replace the rubber bushings in various suspension components, offering several advantages:
- Reduced Deflection: Spherical bearings provide a more rigid connection, leading to better responsiveness.
- Improved Feedback: They enhance road feel, allowing drivers to better understand the car’s dynamics.
- Longevity: Spherical bearings typically last longer than rubber bushings, especially in performance applications.
Installing Spherical Bearings
Installing spherical bearings requires precise work. Here’s how to do it:
- Remove the Old Bushings: Use a press or a bushing removal tool to extract the old rubber bushings from the control arms and other components.
- Prepare for Installation: Clean the mounting surfaces thoroughly to ensure a proper fit for the new spherical bearings.
- Install the Spherical Bearings: Press the spherical bearings into place, ensuring they are seated correctly.
- Reassemble Suspension Components: Reattach the control arms and any other components, ensuring all bolts are torqued to specification.
Tuning Your Suspension Setup
After installing coilovers and spherical bearings, tuning your suspension is essential to achieve the best handling characteristics. Consider these tuning tips:
- Damping Settings: Adjust the damping settings on your coilovers to find a balance between comfort and performance.
- Alignment: Get a professional alignment to ensure that your suspension geometry is optimized for handling.
- Test and Adjust: Take the car for a test drive and make further adjustments based on your driving experience.
Conclusion
Upgrading the suspension on your E30 M50 swap with coilovers and spherical bearings can dramatically improve handling and cornering capabilities. By carefully selecting and installing these components, and tuning your setup, you can create a more responsive and enjoyable driving experience. Whether on the track or the street, these upgrades are sure to enhance your BMW’s performance.