2022-2024 Subaru WRX FA24 JDM Engine | 2.4L 4-Cylinder DOHC AVCS Turbo Motor

Vehicle Specifications

• Engine Code: FA24F (Turbocharged)

• Displacement: 2.4 Liters (2,387 cc)

• Configuration: Horizontally Opposed (Boxer) 4-Cylinder

• Valvetrain: DOHC 16-Valve Dual AVCS

• Aspiration: Twin-Scroll Turbocharger

• Horsepower: 271 hp @ 5,600 rpm (USDM Rating)

• Torque: 258 lb-ft @ 2,000–5,200 rpm

• Compression Ratio: 10.6:1

• Compression Tested: 230psi

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Vehicle Fitments

This JDM FA24F long block is designed for the following North American (USDM) models:

• 2022-2024 Subaru WRX (Base, Premium, Limited, GT, TR)

• 2022-2024 Subaru WRX Sportwagon (Canada/International Fitment)

Note: While the FA24 is used in the Ascent, Legacy, and Outback XT, this WRX-specific variant features unique tuning and turbocharger mounting. Ensure your vehicle utilizes the 2.4L Turbocharged platform before ordering.

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Installation & Technical Notes

The FA24 is a high-compression, direct-injected Boxer engine. To ensure a successful installation and maintain your warranty, please follow these technical guidelines:

 

• Long Block Conversion: This sale includes the engine block, cylinder heads, and internal components. You must transfer your original USDM intake manifold, turbocharger assembly, intercooler, and wiring harness. This ensures 100% plug-and-play compatibility with your vehicle's ECU and emissions sensors.

• Direct Injection & Fueling: Retain your original high-pressure fuel pump and injectors. If using JDM-supplied injectors, they must be verified for flow-rate compatibility with your local fuel grades (91/93 Octane).

• RTV/Sealant Inspection: As with all modern FA-series engines, we recommend inspecting the oil pickup tube for any excess RTV silicone debris during the swap to ensure optimal oil pressure.

• Essential Maintenance: We strongly recommend replacing the following parts during the swap:

  • Spark Plugs: Use only OEM Subaru/NGK Laser Iridium plugs (ILKAR8H6).

  • Engine Oil: 0W-20 Full Synthetic oil only (Strictly enforced for AVCS operation).

  • Oil Filter: Genuine Subaru "Black" Filter (15208AA170).

  • Coolant: Subaru Super Blue Long Life Coolant.

• ECU Reset: After installation, use a professional scan tool to perform a "Learning Value Reset." This is critical for the ECU to adjust to the new engine’s volumetric efficiency and prevents "knock" during the initial break-in period.