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The B-series engines have been a staple in the performance tuning community for decades. Known for their robust design and potential for significant power gains, these engines are often the go-to choice for enthusiasts looking to enhance their vehicle’s performance. In this article, we will explore the real-world results of B-series builds, focusing on the journey from a stock 140 horsepower to an impressive 250 horsepower through turbocharging.
Understanding the B-Series Engine
The B-series engine family, produced by Honda, includes several variants that have become popular among tuners. These engines are lightweight, compact, and offer a high-revving nature that makes them ideal for performance modifications. The stock configuration typically produces around 140 horsepower, but with the right modifications, the potential for power increases is significant.
Power Gains Through Turbocharging
Turbocharging is one of the most effective ways to increase horsepower in a B-series engine. By forcing more air into the combustion chamber, a turbocharger allows for more fuel to be burned, resulting in higher power output. The following sections will outline the steps taken to achieve a power increase from 140 hp to 250 hp.
Initial Setup: Stock B-Series Engine
Before any modifications, the starting point is a stock B-series engine. This engine typically includes:
- 1.6L displacement
- DOHC VTEC technology
- 140 horsepower at 6,600 RPM
- 130 lb-ft of torque at 5,500 RPM
Modification Goals
The goal of the build is to reliably achieve 250 horsepower while maintaining drivability. Key objectives include:
- Increase air intake efficiency
- Enhance fuel delivery
- Optimize exhaust flow
- Ensure engine reliability
Step-by-Step Build Process
1. Upgrading the Turbocharger
The first step in the build process is selecting an appropriate turbocharger. A turbo that can support the desired power levels is crucial. Options include:
- Garrett GT28
- Precision 5858
- Holset HX35
Each of these turbochargers can provide sufficient airflow to reach 250 horsepower with proper tuning.
2. Fuel System Upgrades
To support the increased power, the fuel system must be upgraded. This includes:
- High-flow fuel injectors (e.g., 550cc or larger)
- Upgraded fuel pump (e.g., Walbro 255)
- Fuel pressure regulator
These components ensure that the engine receives the necessary fuel to match the increased air from the turbocharger.
3. Exhaust System Modifications
An efficient exhaust system is vital for maximizing power. Modifications may include:
- High-flow catalytic converter
- Performance exhaust manifold
- Cat-back exhaust system
These upgrades help to reduce back pressure and improve exhaust flow, which is essential for turbocharged applications.
4. Engine Management and Tuning
With the hardware upgrades complete, the next step is tuning the engine management system. This involves:
- Installing a standalone engine management system (e.g., Hondata, AEM)
- Tuning the air-fuel ratio for optimal performance
- Adjusting ignition timing to prevent knock
Proper tuning is critical to ensure that the engine runs smoothly and reliably at increased power levels.
Real-World Results and Performance Data
After completing the build and tuning process, the results were impressive. The following data summarizes the performance of the turbocharged B-series engine:
- Power Output: 250 horsepower at 7,500 RPM
- Torque Output: 220 lb-ft at 4,500 RPM
- 0-60 mph: 5.2 seconds
- Quarter Mile: 12.9 seconds
These figures demonstrate the significant performance gains achievable through a well-executed turbocharged build.
Conclusion
The journey from a stock 140 horsepower B-series engine to a turbocharged 250 horsepower beast is a testament to the potential of these engines. With the right modifications, enthusiasts can achieve remarkable performance gains while maintaining reliability. Whether for street use or track days, a turbocharged B-series engine can deliver exhilarating driving experiences.