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The Nissan 370Z is a beloved sports car known for its performance and sleek design. One of the most effective modifications for enhancing both the sound and performance of your 370Z is the installation of aftermarket headers. This article will guide you through the DIY process of installing headers on your 370Z, ensuring you achieve that desired growl and improved horsepower.
Understanding Headers and Their Benefits
Headers are designed to replace the factory exhaust manifold, allowing for better airflow from the engine. This modification can lead to several benefits:
- Improved Exhaust Flow: Aftermarket headers provide a smoother path for exhaust gases, reducing back pressure.
- Enhanced Sound: A more aggressive exhaust note is achieved, giving your 370Z a sportier character.
- Increased Horsepower: Better airflow can lead to noticeable gains in horsepower and torque.
Tools and Materials Needed
Before starting your installation, gather the following tools and materials:
- Socket set with various extensions
- Torque wrench
- Jack and jack stands
- Header gaskets
- Replacement bolts (if necessary)
- Anti-seize compound
- Safety glasses and gloves
Preparation for Installation
Before diving into the installation process, it’s crucial to prepare your workspace and vehicle:
- Park your 370Z on a flat surface and engage the parking brake.
- Disconnect the negative battery terminal to prevent any electrical issues.
- Raise the front of the vehicle using a jack and secure it with jack stands.
Step-by-Step Installation Process
1. Remove the Stock Exhaust Manifold
Begin by removing the stock exhaust manifold. Follow these steps:
- Locate the exhaust manifold under the hood and remove any heat shields.
- Unbolt the exhaust manifold from the engine using your socket set.
- Carefully detach the manifold from the exhaust system.
- Remove the old gaskets and clean the surface to ensure a proper seal.
2. Install the Aftermarket Headers
With the stock manifold removed, you can now install the aftermarket headers:
- Position the new headers onto the engine, aligning them with the exhaust ports.
- Apply anti-seize compound to the new bolts and secure the headers in place.
- Torque the bolts to the manufacturer’s specifications to ensure a tight fit.
3. Reconnect the Exhaust System
After securing the headers, you’ll need to reconnect the exhaust system:
- Reconnect the exhaust pipes to the headers, ensuring a snug fit.
- Replace any gaskets that were removed during disassembly.
- Secure the exhaust system with the appropriate bolts.
4. Reinstall Heat Shields
If your vehicle had heat shields, reinstall them to protect the engine components:
- Position the heat shields back over the headers.
- Secure them with their original bolts or clips.
5. Final Checks
Before lowering your vehicle, perform the following checks:
- Ensure all bolts are torqued to specifications.
- Check for any leaks in the exhaust system.
- Reconnect the negative battery terminal.
Testing Your New Headers
Once everything is reassembled, it’s time to test your new headers:
- Start the engine and listen for any unusual sounds.
- Check for exhaust leaks around the headers and connections.
- Take your 370Z for a test drive to experience the improved sound and performance.
Conclusion
Installing aftermarket headers on your Nissan 370Z is a rewarding DIY project that enhances both sound and performance. With the right tools and careful attention to detail, you can enjoy the benefits of this modification from the comfort of your garage. Happy driving!