How to Install a Honda RBC Intake Manifold: A Step-by-Step Guide

Upgrading your Honda’s intake manifold to an RBC manifold can significantly enhance your engine’s performance, improving airflow and horsepower. This installation process requires some mechanical knowledge, the right tools, and attention to detail. Follow this step-by-step guide to ensure a successful installation.

Tools and Materials Needed

• Honda RBC intake manifold
• Socket set (10mm, 12mm, and 14mm)
• Torque wrench
• Ratchet extension
• Pliers
• Flathead and Phillips screwdrivers
• Gasket scraper or razor blade
• Engine degreaser
• New intake manifold gasket
• New throttle body gasket
• RTV silicone sealant (if required)
• Shop towels
• Safety glasses and gloves

1. Preparation

1.1. Safety First

• Ensure the engine is cool before starting.
• Wear safety glasses and gloves to protect yourself from debris and chemicals.

1.2. Disconnect the Battery

• Open the hood and disconnect the negative terminal of the battery to prevent any electrical shorts.

2. Remove the Existing Intake Manifold

2.1. Disconnect Sensors and Hoses

• Identify and disconnect any sensors, electrical connectors, and hoses connected to the intake manifold. These may include:
• Throttle position sensor (TPS)
• Idle air control valve (IACV)
• Vacuum hoses
• Use pliers or a flathead screwdriver if necessary to loosen hose clamps.

2.2. Remove the Throttle Body

• Unbolt the throttle body from the existing intake manifold using a 10mm socket. Carefully lift it off and set it aside.
• Ensure to remove the throttle body gasket and clean the mounting surface.

2.3. Unbolt the Intake Manifold

• Use a 12mm socket to remove the bolts securing the intake manifold to the engine block. Carefully lift the manifold away, ensuring no debris falls into the engine.
• If the manifold is stuck, gently tap it with a rubber mallet or wiggle it free.

2.4. Clean the Surface

• Once removed, thoroughly clean the engine block’s mounting surface using a gasket scraper or razor blade to remove old gasket material. Ensure there is no debris or oil residue.

3. Install the RBC Intake Manifold

3.1. Position the New Manifold

• Place the new RBC intake manifold onto the engine block, aligning it with the bolt holes. Ensure the manifold is seated properly.

3.2. Install the New Gasket

• Place the new intake manifold gasket onto the engine block. If necessary, apply a small bead of RTV silicone sealant around the gasket for added security.

3.3. Bolt Down the Intake Manifold

• Hand-tighten the intake manifold bolts, then use a torque wrench to tighten them to the manufacturer’s specified torque setting (usually around 16-22 lb-ft, but check your service manual for specifics).
• Follow the proper torque sequence: typically, this is from the center bolts outwards in a crisscross pattern.

4. Reattach the Throttle Body

4.1. Install the New Throttle Body Gasket

• Place the new throttle body gasket onto the throttle body.

4.2. Bolt the Throttle Body to the Manifold

• Reattach the throttle body to the RBC intake manifold using the 10mm bolts. Tighten them securely but do not overtighten.

5. Reconnect Sensors and Hoses

• Reattach all the previously disconnected sensors, connectors, and hoses. Ensure they are secured and properly connected:
• Throttle position sensor
• Idle air control valve
• Any vacuum lines

6. Final Checks

6.1. Inspect All Connections

• Double-check that all bolts are tightened, gaskets are in place, and all connections are secure.

6.2. Reconnect the Battery

• Reconnect the negative terminal of the battery.

7. Start the Engine

7.1. Initial Startup

• Start the engine and allow it to idle. Check for any vacuum leaks or abnormal noises.
• If you notice any issues, shut off the engine and inspect your work.

7.2. Test Drive

• After confirming there are no leaks, take the vehicle for a test drive. Monitor the engine performance and responsiveness.

Conclusion

Installing a Honda RBC intake manifold can significantly enhance your vehicle’s performance when done correctly. This guide provides a straightforward approach to installing the manifold, but remember to consult your vehicle’s service manual for specific torque settings and other details. With patience and attention to detail, you can enjoy the benefits of increased airflow and improved engine efficiency. Happy driving!