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The Mitsubishi Eclipse has long been a favorite among car enthusiasts, particularly those interested in tuning and performance upgrades. One of the most effective ways to enhance the power output of the Eclipse, especially the models equipped with the 4G63 engine, is by installing a ported head and a high-performance intercooler. In this article, we will explore the benefits of these modifications and how they can lead to significant horsepower gains.
Understanding the 4G63 Engine
The 4G63 engine is a turbocharged inline-four engine that has garnered a reputation for its performance potential. Found in various Mitsubishi models, including the Eclipse, this engine is known for its robust design and tunability. Key features of the 4G63 include:
- DOHC (Dual Overhead Cam) design
- Turbocharged for increased power
- Interchangeable parts with other Mitsubishi models
Benefits of a Ported 4G63 Head
Porting the cylinder head of the 4G63 engine involves modifying the intake and exhaust ports to improve airflow. This process can lead to several performance benefits:
- Increased Airflow: A ported head allows for smoother airflow, which can improve combustion efficiency.
- Higher RPM Capability: Enhancements in airflow can lead to a broader power band, allowing the engine to perform better at higher RPMs.
- Improved Turbo Response: With better airflow, the turbocharger can spool faster, reducing lag and improving throttle response.
Installing the Ported 4G63 Head
Installing a ported head requires careful planning and execution. Here’s a step-by-step guide to ensure a successful installation:
- Gather Necessary Tools: Ensure you have all the required tools, including wrenches, sockets, and a torque wrench.
- Remove the Old Head: Disconnect all components attached to the cylinder head, including the intake manifold, exhaust manifold, and any sensors.
- Prepare the New Head: Clean the ported head and ensure it is free of debris before installation.
- Install the New Head: Place the ported head onto the engine block and secure it using the appropriate torque specifications.
- Reattach Components: Reconnect all components and ensure all connections are secure.
The Role of the HKS Intercooler
Alongside the ported head, installing an HKS intercooler can dramatically enhance the performance of the 4G63 engine. The intercooler works by cooling the air entering the engine, which increases its density and allows for more oxygen to be packed into the combustion chamber.
- Improved Air Temperature: Lower air temperatures lead to better combustion efficiency.
- Increased Power Output: Cooler, denser air can result in significant power gains, often exceeding 40 horsepower.
- Enhanced Reliability: A good intercooler helps maintain optimal operating temperatures, reducing the risk of engine knock.
Installing the HKS Intercooler
The installation of an HKS intercooler can be straightforward if you follow these steps:
- Remove the Stock Intercooler: Disconnect the piping and remove the existing intercooler from the vehicle.
- Prepare the HKS Intercooler: Ensure the new intercooler is clean and ready for installation.
- Install the New Intercooler: Position the HKS intercooler in the designated area and secure it using the provided mounting hardware.
- Connect Piping: Reattach the piping to the new intercooler, ensuring all connections are tight and leak-free.
- Check for Leaks: Once everything is connected, start the engine and check for any leaks in the intercooler system.
Expected Power Gains
After completing the installation of the ported head and HKS intercooler, drivers can expect to see significant improvements in power output. The combination of these modifications can yield:
- Increased horsepower, often exceeding 40 HP.
- Enhanced throttle response and acceleration.
- Improved overall engine performance and reliability.
Conclusion
Upgrading your Mitsubishi Eclipse with a ported 4G63 head and an HKS intercooler is a powerful way to unlock the engine’s full potential. These modifications not only enhance horsepower but also improve overall engine efficiency and responsiveness. With proper installation and tuning, enthusiasts can enjoy a thrilling driving experience with their Eclipse.