Subaru FA24D Engine Specs, Problems And Reliability

Subaru FA24D Engine Specs, Problems And Reliability

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By Scott Matthew

Since 2021, the 2.4-liter Subaru FA24D engine has been manufactured at the group’s Japanese plant, making its mark exclusively on the 2nd generation BRZ sports coupe and the Toyota GR86. This naturally aspirated powerhouse boasts a D-4S combined injection system, contributing to its performance and efficiency.

The FA Family

The FA24D is part of the broader FA engine family, which includes the FA20, FA24F, and the highlighted FA24D. These engines share a common lineage and contribute to the overall evolution of Subaru’s engine technology.

Applications

The FA24D engine has been seamlessly integrated into the following models:

  1. Subaru BRZ 2 (ZD) since 2021
  2. Toyota GT86 2 (ZN8) since 2021

Engine Specs

AttributeSubaru BRZ 2022
Start of production2021
Displacement, cc2387
Fuel systemCombined Injection
Power output, hp230 – 235
Torque output, Nm250
Cylinder blockAluminum H4
Block headAluminum 16v
Cylinder bore, mm94
Piston stroke, mm86
Compression ratio12.5
FeaturesDOHC
Hydraulic liftersNo
Timing driveChain
Phase regulatorDual AVCS
TurbochargingNo
Recommended engine oil0W-20
Engine oil capacity, liter5.0
Fuel typePetrol
Euro standardsEURO 6
Fuel consumption, L/100 kmCity: 12.5
Highway: 6.9
Combined: 8.3
Engine lifespan, km~200,000
Weight, kg165

Problems of the FA24D Engine

While the FA24D engine offers impressive performance, there are certain drawbacks that owners should be aware of:

  1. Oil Starvation Issues: The most prominent concern associated with this engine is failures attributed to oil starvation. It’s crucial to note that most cases of issues related to oil starvation have been reported under track conditions.
  2. Cornering-Related Oil Pressure Drop: Some incidents suggest a potential drop in oil pressure during cornering, possibly due to a design miscalculation. However, it’s worth mentioning that cases of liners wedging and rotating occurred predominantly on the track.
  3. Sealant in Oil Intake: Some owners, upon inspecting the engine, reported finding sealant in the oil intake. This discovery adds complexity to understanding the root cause of certain issues.
  4. Valve Clearance Adjustment Procedure: Owners should be prepared for an expensive procedure involving the adjustment of valve clearances, recommended every 100,000 km to maintain optimal engine performance.

Conclusion

The Subaru FA24D engine, featured in the BRZ and GR86, is a testament to advanced engineering and performance. While challenges such as oil starvation have been reported, it’s important to note that many of these issues arise under track conditions. Owners are encouraged to stay vigilant, perform regular maintenance, and address any concerns promptly to ensure the longevity and reliability of this power unit. As Subaru continues to refine its engines, the FA24D stands as a notable contribution to the world of sports coupes.

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