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The Nissan VQ37 engine is known for its robust performance and tuning potential. Upgrading to Garrett GT2871R turbos and reinforcing the internals can significantly enhance the horsepower output. In this article, we will discuss the steps necessary to achieve 550 horsepower with this engine setup.
Understanding the VQ37 Engine
The VQ37 is a 3.7-liter V6 engine that powers several Nissan and Infiniti models. It features an aluminum alloy block and DOHC design, providing a solid foundation for performance upgrades. The engine’s inherent architecture allows for significant gains when paired with the right turbochargers and supporting modifications.
Choosing the Right Turbochargers
When it comes to upgrading the turbos, the Garrett GT2871R is a popular choice among enthusiasts. These turbos offer a balance of response and power, making them suitable for reaching the 550 hp target.
Benefits of Garrett GT2871R Turbos
Garrett GT2871R turbos provide several advantages:
- High efficiency at higher boost levels.
- Quick spool time for improved throttle response.
- Ability to support significant horsepower increases.
Reinforcing the Engine Internals
To handle the increased power from the upgraded turbos, reinforcing the engine internals is crucial. This includes upgrading components such as pistons, rods, and bearings.
Key Internal Components to Upgrade
- Pistons: Consider forged pistons for increased strength and durability.
- Connecting Rods: Upgrade to forged rods to withstand higher power levels.
- Bearings: Use high-performance bearings for better reliability under stress.
Supporting Modifications
In addition to turbos and internals, several supporting modifications are necessary to reach the desired horsepower. These upgrades ensure the engine runs efficiently and reliably at higher power levels.
Essential Supporting Modifications
- Fuel System: Upgrade fuel injectors and fuel pumps to support increased fuel demands.
- Exhaust System: Install a high-flow exhaust system to reduce back pressure.
- Engine Management: Use a standalone ECU or reflash the factory ECU for optimal tuning.
Tuning the Engine
After completing the hardware upgrades, proper tuning is essential to achieve the target horsepower. A professional tuner can help maximize the engine’s potential while ensuring reliability.
Tuning Considerations
- Monitor air-fuel ratios to ensure optimal combustion.
- Adjust ignition timing for maximum performance.
- Utilize dyno testing to refine the tune and achieve desired power levels.
Conclusion
Reaching 550 hp on a VQ37 engine with Garrett GT2871R turbos and reinforced internals is an achievable goal. By selecting the right components and ensuring proper tuning, enthusiasts can unlock the full potential of this capable engine.