Table of Contents
The Honda Civic EG is a beloved platform among car enthusiasts, particularly for its lightweight design and tunability. In this article, we will explore a real-world 400-hp B20V turbo build that showcases the potential of this iconic vehicle.
Understanding the B20V Engine
The B20V engine is a hybrid of the B20 and B18C (from the Integra Type R), making it a popular choice for those looking to increase performance without sacrificing reliability. This engine combination allows for a higher compression ratio and improved airflow, which are essential for achieving significant power gains.
- Engine Displacement: 2.0 liters
- Power Output: 400 hp
- Turbocharger: Custom T3/T4 turbo
Key Components of the Build
To achieve the 400-hp target, several key components must be upgraded or modified. Below is a list of essential parts that contribute to the success of the build.
- Turbocharger: A custom T3/T4 turbocharger was selected for its ability to provide ample boost while maintaining efficiency.
- Fuel System: Upgraded fuel injectors and a high-flow fuel pump ensure that the engine receives the necessary fuel to support higher power levels.
- Engine Management: A standalone engine management system allows for precise tuning and adjustments to optimize performance.
- Exhaust System: A high-performance exhaust system reduces back pressure and improves exhaust flow.
- Intercooler: A front-mount intercooler helps to lower intake temperatures, increasing power and reliability.
Building the Engine
The engine build process is crucial for achieving the desired power output. Here’s a step-by-step breakdown of the engine assembly and modifications.
Disassembly
The first step in the build is disassembling the engine. This involves removing the cylinder head, oil pan, and other components to access the internals.
Upgrading Internals
To handle the increased power, the engine internals must be upgraded. This includes:
- Forged pistons for increased strength
- Forged connecting rods to withstand higher RPMs
- Performance camshafts to improve airflow
Reassembly
Once the upgrades are complete, the engine is reassembled with careful attention to torque specifications and clearances. This ensures reliability and performance under high-stress conditions.
Tuning the Engine
After the build is complete, tuning is essential to maximize performance. A professional tuner will use a dynamometer to make adjustments to the air-fuel ratio and ignition timing.
- Initial dyno runs to establish a baseline
- Adjustments made based on data collected
- Final dyno runs to confirm power output
Real-World Performance
The final result of the 400-hp B20V turbo build is impressive. The vehicle not only delivers exhilarating performance but also maintains drivability for daily use.
- 0-60 mph in under 4 seconds
- Quarter-mile times in the low 11-second range
- Top speed exceeding 140 mph
Conclusion
The 400-hp B20V turbo build in a Honda Civic EG demonstrates the potential of this platform when combined with the right components and tuning. With careful planning and execution, enthusiasts can achieve remarkable performance while retaining the fun and engaging driving experience that the Civic is known for.