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The H22 engine has long been a favorite among car enthusiasts and tuners alike. Known for its robust design and potential for high power output, the H22 can be transformed from a stock engine into a powerhouse capable of over 400 horsepower. This article will explore the process of building an H22 turbo setup using Precision turbos, Turbosmart components, and forged internals.
Understanding the H22 Engine
The H22 engine, part of Honda’s H-series, features a DOHC design and a 2.2-liter displacement. With its high revving nature and solid internals, the H22 is an excellent candidate for turbocharging.
Key Components for Turbocharging
To achieve significant power gains, several critical components must be upgraded. Here are the essential parts for a successful H22 turbo build:
- Turbocharger: Precision Turbo offers a range of options suitable for the H22.
- Wastegate: Turbosmart provides reliable wastegates to control boost levels.
- Fuel System: Upgraded injectors and fuel pumps are necessary for higher horsepower.
- Engine Management: A proper ECU tune is essential for maximizing performance.
- Forged Internals: Upgrading to forged pistons and rods increases durability under boost.
Choosing the Right Turbocharger
Precision Turbo offers various models suitable for the H22 engine. Selecting the right turbo depends on your power goals and the characteristics of your build. Here are a few popular options:
- Precision 6266: Ideal for a balance of quick spool and high-end power.
- Precision 6766: Offers higher power potential for more extreme builds.
- Precision 5858: Great for those looking for a street-friendly setup.
Boost Control with Turbosmart
Managing boost levels is crucial for reliability and performance. Turbosmart offers a variety of boost control solutions:
- External Wastegates: Provide precise boost control and can handle high power levels.
- Boost Controllers: Allow for adjustable boost settings on the fly.
- Recirculating BOVs: Help maintain boost pressure between shifts and improve throttle response.
Forged Internals for Reliability
When increasing horsepower significantly, the stock internals may not hold up under the added stress. Upgrading to forged internals is a wise choice:
- Forged Pistons: Designed to withstand higher temperatures and pressures.
- Forged Connecting Rods: Provide increased strength and reliability.
- Balanced Rotating Assembly: Ensures smooth operation at high RPMs.
Fuel System Upgrades
To support increased horsepower, the fuel system must be upgraded. Here’s what to consider:
- High-Flow Fuel Injectors: Necessary for delivering the increased fuel demand.
- Upgraded Fuel Pump: Ensures adequate fuel supply under boost conditions.
- Fuel Pressure Regulator: Maintains consistent fuel pressure for optimal performance.
Engine Management and Tuning
Proper engine management is vital for a successful turbo build. A standalone ECU or a reflash of the stock ECU can help achieve optimal performance:
- Standalone ECU: Offers flexibility and customization for tuning.
- ECU Reflash: Can be a cost-effective option for moderate builds.
- Dyno Tuning: Essential for maximizing performance and ensuring reliability.
Building the H22 Turbo Setup
Once all components are selected, the next step is the actual build. Here’s a brief overview of the process:
- Disassemble the Engine: Remove the stock components and prepare for upgrades.
- Install Forged Internals: Replace stock pistons and rods with forged alternatives.
- Turbo Installation: Mount the turbocharger, wastegate, and related components.
- Upgrade Fuel System: Install new injectors and fuel pump.
- ECU Setup: Flash or install the standalone ECU and prepare for tuning.
Tuning for Performance
After the build is complete, tuning is the final step to unlock the full potential of your H22 turbo setup. A professional tuner can help you achieve the desired power level while ensuring reliability.
Conclusion
The H22 turbo build is an exciting project that can yield impressive power gains. By carefully selecting components from Precision, Turbosmart, and utilizing forged internals, you can achieve over 400 horsepower while maintaining reliability. With the right tuning and setup, your H22 can become a formidable machine on the road or track.