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The 4G63 engine, famously found in the Mitsubishi Eclipse, is a popular choice for tuning enthusiasts looking to achieve high horsepower figures. This article will delve into a Stage 3 build featuring forged pistons, DSM connectors, and a 20G turbocharger, aiming for a robust output of 350 horsepower.
Understanding the 4G63 Engine
The 4G63 is a 2.0-liter inline-four engine that has gained a reputation for its durability and tunability. Originally designed for the Mitsubishi Galant, it was later used in various models, including the Eclipse. Its strong iron block and aluminum DOHC head make it a solid foundation for performance upgrades.
Key Components of the Stage 3 Build
- Forged Pistons
- DSM Connectors
- 20G Turbocharger
- Upgraded Fuel System
- ECU Tuning
Forged Pistons
Forged pistons are essential for any high-performance build. They provide increased strength and resistance to heat, allowing the engine to handle higher boost levels without failure. For the 4G63, aftermarket forged pistons can significantly enhance reliability and performance.
DSM Connectors
Using DSM connectors is crucial for ensuring a reliable electrical connection in modified setups. These connectors are designed to handle higher currents and are essential for maintaining the integrity of the engine’s electrical systems, especially when adding performance parts.
20G Turbocharger
The 20G turbocharger is a popular upgrade for the 4G63 engine, known for its ability to produce substantial power increases. With proper tuning, this turbocharger can help the engine achieve the targeted 350 horsepower while maintaining reliability.
Supporting Modifications
- Upgraded Fuel Injectors
- High-Flow Fuel Pump
- Aftermarket Intercooler
- Performance Exhaust System
Upgraded Fuel Injectors
To support the increased airflow from the 20G turbo, upgraded fuel injectors are necessary. These injectors ensure that the engine receives the correct amount of fuel for optimal combustion, preventing lean conditions that could lead to engine damage.
High-Flow Fuel Pump
A high-flow fuel pump is essential to provide the increased fuel demand of a tuned 4G63 engine. This component ensures that there is enough fuel pressure for the injectors to operate effectively, especially under high boost conditions.
Aftermarket Intercooler
Installing an aftermarket intercooler helps to reduce the temperature of the intake air, which is critical when running a turbocharged engine. Cooler air is denser and allows for better combustion, further improving performance and efficiency.
Performance Exhaust System
A performance exhaust system is vital for improving exhaust flow and reducing back pressure. This modification not only helps the turbo spool faster but also enhances the overall sound of the vehicle, providing a more aggressive tone that many enthusiasts desire.
Tuning for Maximum Performance
After completing the hardware modifications, proper tuning is essential to unlock the full potential of the 4G63 engine. A professional tuner can adjust the ECU settings to optimize fuel maps, ignition timing, and boost levels, ensuring the engine runs smoothly and efficiently at the target power output.
Conclusion
The 4G63 Eclipse Stage 3 build with forged pistons, DSM connectors, and a 20G turbocharger is an exciting project for any performance enthusiast. With the right components and tuning, achieving 350 horsepower is not only possible but also reliable, making this engine a favorite among tuners.