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The 4G63 engine, known for its robust design and tuning potential, has become a favorite among performance enthusiasts. Achieving over 700 horsepower from this engine requires careful selection of components, particularly camshafts, fuel systems, and boost strategies. This article delves into the best practices and components for maximizing the performance of a built 4G63 engine.
Understanding the 4G63 Engine
The 4G63 is a 2.0-liter inline-four engine that was produced by Mitsubishi. It is known for its durability and performance potential, making it a popular choice for tuning. The engine features a DOHC design and has been used in various models, including the Mitsubishi Eclipse and Lancer Evolution.
Choosing the Right Camshafts
Camshafts play a crucial role in determining the performance characteristics of an engine. For those looking to achieve 700+ hp on a 4G63, selecting the right camshafts is essential. Here are some of the best options:
- HKS 272 Camshafts: These camshafts are designed for high RPM performance and provide excellent airflow.
- BC 272 Camshafts: Known for their aggressive lift and duration, these cams enhance power across the RPM range.
- GSC S2 Camshafts: These camshafts offer a balance of streetability and high-end power, making them a popular choice.
Installation Considerations
When installing new camshafts, it is vital to consider the following:
- Ensure proper alignment and timing during installation.
- Consider upgrading valve springs to handle increased lift.
- Check for adequate clearance in the engine bay.
Fuel Systems for High Power
To support a 700+ hp build, the fuel system must be capable of delivering sufficient fuel to the engine. Here are some recommended components:
- Fuel Injectors: Upgrading to high-flow fuel injectors is essential. Look for injectors rated for at least 1000cc/min.
- Fuel Pump: A high-performance fuel pump, such as the Walbro 450, is necessary to maintain fuel pressure under high demand.
- Fuel Pressure Regulator: An adjustable fuel pressure regulator allows for precise tuning of the fuel system.
Fuel Types
Using the right fuel is critical for achieving maximum power. Consider the following:
- Race Gas: Opting for higher octane race fuel can help prevent knock and allow for more aggressive tuning.
- E85 Ethanol: This fuel provides a higher resistance to knock and can help increase horsepower when tuned correctly.
Boost Strategies for Maximum Power
Boost is a critical factor in achieving high horsepower levels. Here are some effective boost strategies:
- Turbo Selection: Choose a turbocharger that can support your power goals. Options like the Garrett GTX3582R are popular for high horsepower builds.
- Boost Control: Implementing an electronic boost controller allows for precise management of boost levels for different driving conditions.
- Intercooling: A high-quality intercooler is essential for reducing intake temperatures and preventing knock.
Boost Levels
When tuning for 700+ hp, consider the following boost levels:
- Start with lower boost levels (around 20 psi) and gradually increase while monitoring engine health.
- Target boost levels of 30 psi or higher with proper tuning and supporting modifications.
Conclusion
Achieving 700+ horsepower on a 4G63 engine is an ambitious yet attainable goal with the right components and tuning strategies. By selecting the best camshafts, optimizing the fuel system, and implementing effective boost strategies, enthusiasts can unlock the true potential of this legendary engine.