Table of Contents
The FD RX-7 is a beloved sports car known for its lightweight design and rotary engine. One popular modification among enthusiasts is the installation of a bellmouth downpipe. This component not only enhances the vehicle’s power output but also improves its exhaust sound. In this article, we will guide you through the DIY installation process of a bellmouth downpipe on your FD RX-7.
Tools and Materials Needed
- Bellmouth downpipe kit
- Socket set
- Wrenches
- Jack and jack stands
- Safety glasses
- Gloves
- Exhaust gasket
- Torque wrench
Before starting the installation, ensure you have all the necessary tools and materials. This will help streamline the process and minimize any interruptions.
Preparation Steps
Preparation is key to a successful installation. Follow these steps to get your FD RX-7 ready for the downpipe installation.
- Park the vehicle on a flat surface.
- Engage the parking brake and disconnect the battery.
- Raise the car using a jack and secure it with jack stands.
- Remove the undertray if necessary to access the exhaust system.
Removing the Stock Downpipe
To install the bellmouth downpipe, you must first remove the stock downpipe. Follow these steps carefully.
- Locate the stock downpipe connected to the turbocharger.
- Using a socket set, remove the bolts securing the downpipe to the turbo.
- Disconnect any sensors or brackets attached to the downpipe.
- Carefully slide the downpipe out of its position.
Installing the Bellmouth Downpipe
With the stock downpipe removed, you can now install the new bellmouth downpipe. Follow these steps for a proper installation.
- Position the bellmouth downpipe in place, ensuring it aligns with the turbocharger.
- Install the new exhaust gasket to prevent leaks.
- Secure the downpipe with the original bolts, tightening them to the manufacturer’s specifications using a torque wrench.
- Reconnect any sensors or brackets that were removed during the disassembly.
Final Steps and Testing
Once the bellmouth downpipe is installed, it’s essential to perform some final checks and tests to ensure everything is functioning correctly.
- Double-check all connections and bolts for tightness.
- Reinstall the undertray if it was removed.
- Reconnect the battery.
- Start the engine and listen for any unusual sounds.
- Take the car for a test drive to assess performance and sound.
Benefits of Installing a Bellmouth Downpipe
Installing a bellmouth downpipe on your FD RX-7 offers several advantages that enhance both performance and driving experience.
- Increased Power: A bellmouth design allows for better exhaust flow, which can lead to increased horsepower and torque.
- Improved Sound: The new downpipe can provide a deeper, more aggressive exhaust note, enhancing the overall driving experience.
- Weight Reduction: Aftermarket downpipes are often lighter than stock components, contributing to a lower overall vehicle weight.
- Better Turbo Response: Enhanced exhaust flow can lead to quicker turbo spool times, improving throttle response.
Conclusion
Installing a bellmouth downpipe on your FD RX-7 is a rewarding DIY project that can significantly improve your vehicle’s performance and sound. With the right tools and preparation, you can complete this installation successfully and enjoy the benefits it brings. Always remember to follow safety precautions and consult your vehicle’s manual for specific instructions related to your model.