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The Mazda RX-8 is a unique vehicle known for its lightweight design and rotary engine. However, many enthusiasts seek to enhance its performance by swapping in a more powerful engine. One popular choice is the LS2 engine, which can be paired with an Edelbrock intake to achieve impressive horsepower figures without breaking the bank. In this article, we’ll explore how to maximize power on a budget, achieving 480 horsepower in an RX-8 LS swap.
Understanding the LS2 Engine
The LS2 engine is part of the General Motors LS family, known for its reliability and performance potential. It features a 6.0-liter V8 configuration, producing around 400 horsepower in stock form. With some modifications, such as the addition of an Edelbrock intake, you can unlock even more power.
Benefits of the Edelbrock Intake
The Edelbrock intake manifold is a popular choice for LS engine swaps due to its ability to improve airflow and increase horsepower. Here are some key benefits:
- Improved Airflow: The design of the Edelbrock intake allows for better airflow to the engine, enhancing combustion efficiency.
- Increased Power: Users have reported significant horsepower gains when using an Edelbrock intake compared to stock options.
- Lightweight Design: The intake is made from lightweight materials, contributing to the overall weight reduction of the vehicle.
Preparing for the Swap
Before starting the LS swap, it’s essential to gather all necessary components and tools. Here’s a checklist to help you prepare:
- LS2 engine (used or refurbished)
- Edelbrock intake manifold
- Engine mounts and transmission adapter
- Exhaust headers
- ECU and wiring harness
- Cooling system components
- Fuel system upgrades
Step-by-Step Swap Process
1. Remove the Original Engine
Begin by safely removing the original rotary engine from the RX-8. Ensure you disconnect all electrical connections, fuel lines, and cooling components. Use an engine hoist to lift the engine out of the bay.
2. Install Engine Mounts
Once the original engine is out, install the appropriate engine mounts for the LS2. This step is crucial for ensuring proper alignment and fitment of the new engine.
3. Position the LS2 Engine
Carefully position the LS2 engine into the engine bay. Make sure to align it with the engine mounts and transmission adapter. Secure it in place once everything is aligned correctly.
4. Connect the Transmission
Attach the transmission to the LS2 engine. Ensure that all bolts are tightened to the manufacturer’s specifications and that the transmission is properly aligned.
5. Install the Edelbrock Intake
With the engine in place, install the Edelbrock intake manifold. Follow the installation instructions carefully, ensuring all gaskets are properly seated to prevent leaks.
6. Set Up the Fuel System
Upgrade the fuel system to support the increased demand of the LS2 engine. This may include installing a higher flow fuel pump and upgrading fuel lines.
7. Wiring and ECU Setup
Connect the wiring harness to the LS2 engine and install the ECU. Make sure to follow the wiring diagrams specific to your swap to ensure all connections are correct.
8. Cooling System Installation
Install a suitable cooling system to manage the heat generated by the LS2 engine. This may involve using an upgraded radiator and ensuring all hoses are secured and leak-free.
Tuning for Maximum Performance
After completing the swap, tuning the engine is essential for achieving the desired power output. Consider the following options:
- Dyno Tuning: A professional dyno tune can optimize the engine’s performance and ensure it runs efficiently.
- ECU Reprogramming: Adjusting the ECU settings can help maximize horsepower and torque output.
- Performance Upgrades: Consider additional modifications such as headers, camshaft upgrades, and exhaust systems to further increase power.
Conclusion
Achieving 480 horsepower in an RX-8 with an LS2 engine and Edelbrock intake is not only possible but can be done on a budget. By carefully planning your swap and selecting the right components, you can create a powerful and reliable vehicle that stands out on the road. With the right tuning and modifications, your RX-8 can deliver thrilling performance and an exhilarating driving experience.