Table of Contents
Building a K20 engine to achieve 400 horsepower is an exciting project for any automotive enthusiast. This guide will take you through a step-by-step performance build using Skunk2 parts and Garrett turbochargers. Whether you’re a seasoned mechanic or a beginner, this article will provide you with the knowledge needed to enhance your K20 engine.
Understanding the K20 Engine
The K20 engine is a popular choice among car enthusiasts for its performance potential and reliability. Originally designed for Honda vehicles, the K20 has a strong aftermarket support that allows for significant power upgrades.
Key Features of the K20 Engine
- High-revving nature
- Variable valve timing (VTEC)
- Aluminum block and head
- Strong aftermarket support
Parts Needed for the Build
To achieve the desired 400 horsepower, specific performance parts are essential. Below is a list of components that will be used in this build.
- Skunk2 intake manifold
- Skunk2 camshafts
- Garrett turbocharger
- Intercooler
- Fuel injectors
- ECU tuning software
- Exhaust system
- Upgraded fuel pump
Step 1: Disassemble the Engine
Before any upgrades can be made, the first step is to disassemble the engine. This process involves removing the engine from the vehicle and taking apart the necessary components.
- Disconnect battery and remove the engine from the car.
- Drain fluids and remove the intake and exhaust manifolds.
- Take off the cylinder head and oil pan.
Step 2: Install Skunk2 Parts
With the engine disassembled, it’s time to install the Skunk2 parts. These components are designed to improve airflow and performance significantly.
- Install the Skunk2 intake manifold.
- Replace the stock camshafts with Skunk2 camshafts.
- Ensure proper alignment and torque specifications are followed.
Step 3: Turbocharger Installation
The Garrett turbocharger is a crucial part of this build, allowing the K20 engine to reach higher horsepower levels. Proper installation is key to maximizing performance.
- Mount the Garrett turbocharger to the exhaust manifold.
- Install the intercooler and connect the piping.
- Ensure all connections are secure and leak-free.
Step 4: Fuel System Upgrade
To support the increased power, the fuel system must be upgraded. This includes installing larger fuel injectors and an upgraded fuel pump.
- Replace stock fuel injectors with high-flow injectors.
- Install an upgraded fuel pump to ensure adequate fuel delivery.
- Check for proper fuel pressure and adjust as necessary.
Step 5: ECU Tuning
After all components are installed, ECU tuning is necessary to optimize the engine’s performance. This step is crucial for achieving the desired horsepower.
- Connect the ECU tuning software to the vehicle.
- Adjust fuel maps and ignition timing for turbo operation.
- Test and refine the settings on a dynamometer.
Step 6: Final Assembly and Testing
With all upgrades complete, it’s time for final assembly and testing. Ensure all components are securely fastened and fluids are topped off.
- Reassemble the engine and reinstall it into the vehicle.
- Perform a thorough inspection before starting the engine.
- Start the engine and monitor for any issues.
Conclusion
Building a K20 engine to 400 horsepower using Skunk2 parts and Garrett turbochargers is a challenging yet rewarding project. With careful planning and execution, you can achieve impressive performance gains and enjoy the thrill of driving a high-powered vehicle.