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The FC RX-7 is a beloved sports car known for its lightweight design and rotary engine performance. Upgrading the fuel system is a common modification for enthusiasts looking to increase power and efficiency. One of the most popular upgrades is installing a Walbro 255 fuel pump, which enhances fuel delivery to support higher horsepower levels.
Why Upgrade to a Walbro 255 Fuel Pump?
The Walbro 255 fuel pump is renowned for its high flow rate and reliability. It is capable of delivering more fuel than the stock pump, making it an ideal choice for those who have modified their FC RX-7 for increased performance.
- Increased Fuel Flow: Supports higher horsepower builds.
- Reliability: Designed for performance applications.
- Cost-Effective: Affordable upgrade for significant gains.
Tools and Materials Needed
Before starting the installation, gather the necessary tools and materials to ensure a smooth process. Here’s what you will need:
- Walbro 255 fuel pump kit
- Fuel line and clamps
- Wire connectors and heat shrink tubing
- Basic hand tools (screwdrivers, pliers, wrenches)
- Fuel pressure gauge (optional)
- Safety glasses and gloves
Step-by-Step Installation Guide
1. Prepare the Vehicle
Begin by ensuring the vehicle is parked on a flat surface and the engine is cool. Disconnect the negative terminal of the battery to prevent any electrical issues during the installation.
2. Access the Fuel Pump
The fuel pump is located in the fuel tank. To access it, you will need to remove the rear seats and the access panel on the top of the tank. Carefully unbolt the panel and set it aside.
3. Remove the Stock Fuel Pump
Disconnect the fuel lines and electrical connectors from the stock fuel pump. Be cautious, as there may be residual fuel in the lines. Once disconnected, remove the pump from its housing.
4. Install the Walbro 255 Fuel Pump
Take the Walbro 255 fuel pump and install it into the housing. Ensure that it is seated properly and secure it with the included hardware. Reconnect the fuel lines and electrical connectors, making sure they are tight and leak-free.
5. Reassemble the Access Panel
Once the new pump is installed, replace the access panel and secure it with bolts. Reinstall the rear seats and ensure everything is back in place.
6. Reconnect the Battery and Test
Reconnect the negative terminal of the battery. Start the engine and listen for any unusual noises. Check for fuel leaks around the pump area. If everything looks good, you can proceed to test drive the vehicle.
Benefits of the Upgrade
After installing the Walbro 255 fuel pump, drivers often notice several benefits:
- Improved Throttle Response: More fuel means better engine performance.
- Higher Power Potential: Supports modifications like turbocharging.
- Enhanced Reliability: Reduces the risk of fuel starvation.
Conclusion
Upgrading to a Walbro 255 fuel pump is a smart move for any FC RX-7 owner looking to enhance performance. With the right tools and a bit of patience, this installation can be completed in a few hours, leading to significant improvements in fuel delivery and overall driving experience.