EG B Series Engine Swap: A Comprehensive Parts List
Embarking on an EG B Series engine swap project? You're in the right place. This comprehensive guide will walk you through the essential parts you'll need for a successful swap, ensuring your engine runs smoothly and reliably. Let's dive in.
Understanding the B Series Engine
The B Series engine, introduced in the late 1980s, is a popular choice among Honda enthusiasts for its robust design and tuning potential. It's a 4-cylinder, DOHC engine with a reputation for high revs and power output. Before you start your swap, ensure you understand the differences between the various B Series engines, such as the B16, B17, and B18, to choose the right one for your project.
Essential Parts for Your EG B Series Engine Swap
Engine Mounts
- Engine-to-Transmission Mount: The EG transmission mount is compatible with the B Series engine.
- Engine-to-Chassis Mounts: You'll need to use EG engine mounts, as the B Series engine is a direct fit for the EG Civic's engine bay.
Exhaust Manifold and Header
For a stock swap, you can use the EG's exhaust manifold. However, for better performance, consider a header designed for the B Series engine. Popular choices include the Skunk2 Ultra Street Header and the Hasport B Series Header.

Intake Manifold and Throttle Body
The EG's intake manifold and throttle body are compatible with the B Series engine. However, if you're looking to upgrade, consider a performance intake manifold and a larger throttle body for better airflow and improved performance.
Swapping the Engine: Step-by-Step
Before you begin, ensure you have all the necessary tools and parts. Here's a simplified step-by-step guide to swapping your EG's engine with a B Series engine:
- Drain the engine's oil and remove the exhaust system.
- Disconnect the engine's electrical connectors and remove the engine mounts.
- Remove the engine from the vehicle, ensuring you keep track of any bolts and hardware.
- Install the B Series engine, connecting the engine mounts, electrical connectors, and exhaust system.
- Fill the engine with oil and ensure all connections are secure.
- Start the engine and check for any leaks or issues.
Tuning and Performance Upgrades
Once your engine swap is complete, consider tuning and performance upgrades to maximize your B Series engine's potential. This could include a performance camshaft, upgraded valvetrain components, and a larger displacement engine swap, such as the B18C or B20V.

Remember, each upgrade should be carefully considered and tested to ensure it works with your specific engine and vehicle setup. Always consult with a professional if you're unsure about any aspect of the process.
Conclusion
An EG B Series engine swap is an exciting project that can significantly improve your vehicle's performance. By understanding the essential parts and following a comprehensive guide, you can successfully complete your swap and enjoy the fruits of your labor. Happy wrenching!