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The 4G63 engine, renowned for its performance potential, has captivated automotive enthusiasts for decades. Turbocharging this engine can yield impressive power figures, particularly when aiming for the coveted 500+ horsepower mark. In this article, we will explore how to achieve this milestone using a T3/T4 hybrid turbo and upgraded internals.
Understanding the 4G63 Engine
The 4G63 is a 2.0L inline-four engine that has seen extensive use in various Mitsubishi models. Known for its robust design, it features a DOHC configuration and has been a favorite among tuners. Its ability to handle significant power increases makes it an ideal candidate for turbocharging.
Choosing the Right Turbo: T3/T4 Hybrid
The T3/T4 hybrid turbocharger is a popular choice for those looking to push the 4G63 to its limits. This turbo combines the benefits of both T3 and T4 designs, offering a balance of quick spool time and high-end power. Here are some key benefits:
- Efficiency: Improved airflow and reduced lag.
- Power Band: Broad power range suitable for street and track use.
- Customizability: Various trim options to suit specific tuning goals.
Upgrading Internals for Reliability
To safely achieve 500+ horsepower, upgrading the engine’s internals is crucial. Stock components may not withstand the increased power and boost levels. Here’s a list of recommended upgrades:
- Pistons: Forged pistons can handle higher compression and boost levels.
- Rods: Upgraded connecting rods provide strength and durability.
- Crankshaft: A forged crankshaft ensures reliability under stress.
- Head Gasket: A multi-layer steel (MLS) gasket can prevent blowouts.
Supporting Modifications
In addition to the turbo and internals, several supporting modifications are necessary to maximize performance and reliability:
- Fuel System: Upgraded fuel injectors and a high-flow fuel pump are essential.
- ECU Tuning: A standalone ECU or reflash is needed to optimize fuel and timing maps.
- Intercooler: A larger intercooler helps to reduce intake temperatures.
- Exhaust System: A high-flow exhaust will improve turbo efficiency.
Installation and Tuning
Once all components are acquired, the installation process begins. It’s advisable to have a professional mechanic or a knowledgeable friend assist with this process, especially for the tuning aspect. Proper tuning is critical to ensure the engine runs smoothly and efficiently at high power levels.
Dyno Tuning
After installation, dyno tuning will help refine the engine’s performance. This process involves:
- Adjusting Fuel Maps: Ensuring the engine receives the right amount of fuel at all RPMs.
- Tweaking Ignition Timing: Optimizing timing for maximum power without knock.
- Monitoring A/F Ratios: Keeping air/fuel ratios within safe limits.
Conclusion
Turbocharging the 4G63 to achieve 500+ horsepower is an exciting endeavor that requires careful planning and execution. By selecting the right turbo, upgrading internals, and ensuring proper tuning, enthusiasts can unlock the full potential of this legendary engine. With the right setup, the 4G63 can deliver exhilarating performance on the street or the track.