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The FC RX-7, a beloved sports car from the late 1980s and early 1990s, is known for its lightweight design and rotary engine. Enthusiasts often seek ways to enhance its performance, and one of the most effective modifications is upgrading the intercooler. This article explores how aftermarket intercoolers can significantly improve the performance of the FC RX-7.
Understanding Intercoolers
An intercooler is a heat exchanger that cools the air entering the engine, allowing for denser air and more efficient combustion. The FC RX-7, with its turbocharged rotary engine, benefits greatly from an aftermarket intercooler. Here’s why.
Benefits of Aftermarket Intercoolers
Aftermarket intercoolers offer several advantages over the stock intercooler, including:
- Improved Cooling Efficiency: Aftermarket intercoolers typically feature larger cores and better airflow designs, resulting in lower intake temperatures.
- Increased Power Output: Cooler air allows for more oxygen to enter the combustion chamber, leading to enhanced power and torque.
- Better Reliability: High-performance intercoolers are often built with superior materials, offering greater durability under high boost conditions.
- Reduced Turbo Lag: Improved airflow can help reduce the time it takes for the turbo to spool, resulting in quicker acceleration.
Types of Aftermarket Intercoolers
When choosing an aftermarket intercooler for the FC RX-7, there are several types to consider:
- Front Mount Intercoolers: These are larger and positioned at the front of the vehicle, allowing for maximum airflow and cooling efficiency.
- Top Mount Intercoolers: These are typically easier to install and can fit in the stock location, but may not provide as much cooling as front mount options.
- Liquid-to-Air Intercoolers: These use a liquid cooling system and can maintain lower temperatures, but are more complex to install and maintain.
Factors to Consider When Choosing an Intercooler
Choosing the right intercooler involves several considerations:
- Size: Ensure the intercooler fits within the available space in the FC RX-7 while maximizing cooling capacity.
- Material: Look for intercoolers made from high-quality materials like aluminum, which provide durability and heat dissipation.
- Core Design: Consider the design of the core; bar-and-plate designs typically offer better cooling than tube-and-fin designs.
- Installation Complexity: Some intercoolers may require significant modifications to the vehicle, which can impact your decision.
Installation Tips for Aftermarket Intercoolers
Installing an aftermarket intercooler can be a rewarding project. Here are some tips to ensure a successful installation:
- Read the Instructions: Always follow the manufacturer’s instructions for installation to avoid issues.
- Gather Necessary Tools: Ensure you have all the tools required for installation, including wrenches, screwdrivers, and possibly a saw for modifications.
- Check for Leaks: After installation, carefully check for any leaks in the piping and connections.
- Test Drive: Take the vehicle for a test drive to ensure the intercooler is functioning properly and monitor performance improvements.
Performance Gains from Aftermarket Intercoolers
Upgrading to an aftermarket intercooler can lead to significant performance gains for the FC RX-7. Users commonly report:
- Increased Horsepower: Many drivers experience a noticeable increase in horsepower, often in the range of 20-50 additional horsepower depending on other modifications.
- Improved Throttle Response: Enhanced cooling can lead to better throttle response and overall drivability.
- Higher Boost Levels: With better cooling, the engine can handle higher boost levels without the risk of knock.
Conclusion
In summary, upgrading the intercooler on an FC RX-7 is a valuable modification that can enhance performance, reliability, and driving enjoyment. By carefully selecting the right intercooler and following proper installation practices, enthusiasts can unlock the full potential of their rotary engine.