High-strength Internals for 4g63: Brands and Specifications for 700+ Hp Builds

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The 4G63 engine, known for its robust performance and tuning potential, has been a favorite among car enthusiasts, especially in the world of high-performance builds. When aiming for power levels exceeding 700 horsepower, it is crucial to upgrade the engine’s internals to withstand the increased stress and heat. In this article, we will explore the various high-strength internals available for the 4G63 engine, including brands and specifications that cater to extreme builds.

Understanding the 4G63 Engine

The 4G63 is a 2.0L inline-four engine produced by Mitsubishi. It has been used in various models, including the Eclipse, Talon, and Galant. Known for its turbocharging capabilities, the 4G63 can be pushed to impressive power levels with the right modifications. However, to achieve and maintain 700+ horsepower, the engine’s internals must be upgraded to handle the demands of high boost and aggressive tuning.

Key Components for High-Strength Builds

When building a 4G63 for high horsepower applications, several key components need to be upgraded. These include the pistons, rods, crankshaft, and bearings. Each of these components plays a critical role in the engine’s overall performance and reliability.

Pistons

Pistons are crucial for managing combustion pressure and heat. For 700+ hp builds, forged pistons are recommended due to their strength and durability. Here are some popular brands:

  • Wiseco: Known for their high-performance forged pistons, Wiseco offers a variety of compression ratios suitable for turbo applications.
  • CP-Carrillo: CP pistons are designed for extreme performance and can handle high boost levels without failure.
  • JE Pistons: JE provides custom piston options, allowing for tailored specifications to meet specific build requirements.

Connecting Rods

Connecting rods must be able to handle the increased forces generated at high RPM and boost levels. Upgrading to forged rods is essential. Recommended brands include:

  • Manley: Manley offers a range of forged rods that are lightweight yet incredibly strong, ideal for high-horsepower applications.
  • CP-Carrillo: In addition to pistons, CP-Carrillo manufactures connecting rods that are designed for extreme durability.
  • Brian Crower: Brian Crower rods are known for their high strength and reliability, making them a popular choice among tuners.

Crankshaft

The crankshaft is the backbone of the engine, and for builds aiming for 700+ hp, a forged crankshaft is necessary. Here are some top options:

  • Manley: Manley’s forged crankshafts are designed for high-performance applications and offer excellent strength and reliability.
  • GSC Power-Division: GSC provides high-quality crankshafts that can handle extreme power levels.
  • OEM Mitsubishi: For those looking for a reliable option, the OEM forged crankshaft can also support moderate power upgrades.

Engine Bearings

High-performance engine bearings are essential for reducing friction and ensuring longevity under extreme conditions. Recommended brands include:

  • ACL: ACL bearings are known for their durability and are a popular choice among performance builders.
  • Clevite: Clevite offers a range of high-performance bearings that provide excellent protection under high load conditions.
  • King Racing: King bearings are designed specifically for racing applications and offer superior performance and reliability.

Choosing the Right Specifications

When selecting internals for a 4G63 build, it is essential to consider the specifications that best suit your goals. Here are some factors to keep in mind:

  • Compression Ratio: A lower compression ratio is generally better for high boost applications, as it reduces the risk of detonation.
  • Weight: Lighter components can improve engine response and RPM capabilities, but strength should not be compromised.
  • Clearances: Proper clearances are crucial for oil flow and to prevent bearing failure, especially at high RPM.

Conclusion

Building a 4G63 engine capable of producing 700+ horsepower requires careful selection of high-strength internals. By choosing quality components from reputable brands, you can ensure that your engine will perform reliably under extreme conditions. Whether you are a seasoned builder or new to the tuning scene, understanding these components will help you achieve your performance goals.