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The 4G63 engine, known for its robust performance potential, has been a favorite among automotive enthusiasts and tuners alike. In this article, we will explore the step-by-step process of building a 4G63 engine from its stock form to a powerful 700+ horsepower beast. This comparison will highlight the modifications and enhancements necessary to achieve such impressive power levels.
Understanding the 4G63 Engine
The 4G63 is a 2.0L inline-four engine that was originally developed by Mitsubishi. It has gained a reputation for its high-revving capabilities and strong aftermarket support. The engine is found in various models, including the Mitsubishi Eclipse and Eagle Talon. Understanding its design and components is crucial for anyone looking to build a performance version.
Stock 4G63 Specifications
- Displacement: 2.0 liters
- Power Output: Approximately 190 hp (varies by model)
- Torque: Around 200 lb-ft
- Engine Type: Inline-4, DOHC
Step 1: Assessing the Stock Engine
Before diving into modifications, it is essential to assess the condition of the stock engine. This includes checking for any wear and tear, leaks, and overall functionality. A compression test can help determine the health of the engine and whether it can handle the upcoming modifications.
Step 2: Upgrading Internal Components
Pistons and Connecting Rods
To handle increased power, upgrading to forged pistons and connecting rods is essential. These components provide greater strength and durability, allowing the engine to withstand higher boost levels.
Cylinder Head Modifications
Porting and polishing the cylinder head can significantly improve airflow, which is critical for performance. Upgrading to larger valves and high-performance valve springs will also enhance the engine’s ability to breathe at higher RPMs.
Step 3: Upgrading the Turbocharger
The stock turbocharger is not capable of supporting 700+ hp. Upgrading to a larger turbo, such as a GT30 or GT35, will provide the necessary airflow to achieve high power levels. Additionally, a proper tune is required to ensure the engine runs efficiently with the new turbo setup.
Step 4: Fuel System Upgrades
A high-performance engine requires a robust fuel system. Upgrading to larger fuel injectors and a high-flow fuel pump will ensure that the engine receives the necessary fuel to support higher horsepower. Consider using a fuel pressure regulator for optimal performance.
Step 5: Engine Management System
An aftermarket engine management system is crucial for tuning the engine to its new specifications. A standalone system allows for precise control over fuel mapping, ignition timing, and boost levels, ensuring that the engine runs efficiently and reliably.
Step 6: Exhaust System Upgrades
A high-performance exhaust system will improve exhaust flow and reduce back pressure. Upgrading to a larger diameter downpipe and high-flow catalytic converter will enhance turbo response and overall performance.
Final Comparison: Stock vs. Built 4G63
- Stock Power Output: Approximately 190 hp
- Built Power Output: 700+ hp
- Torque: Increased significantly with upgrades
- Reliability: Enhanced with quality components
Conclusion
Transforming a stock 4G63 engine into a 700+ hp powerhouse requires careful planning and execution. By upgrading internal components, turbochargers, fuel systems, and exhaust systems, enthusiasts can unlock the true potential of this legendary engine. With the right modifications and tuning, the 4G63 can deliver exhilarating performance on and off the track.