Edelbrock 4789 Installation Instructions
©2003 Edelbrock Corporation
Rev. 3/03
Catalog #4789
Brochure No. 63-0175
Page 1 of 2
Edelbrock 65mm Throttle Body
For 1996-2001 Honda Acura Integra Type R
Catalog #4789
INSTALLATION INSTRUCTIONS
Please study these instructions carefully before installing your new throttle body. If you have any questions or problems,
please call our
Technical Hotline at: 1-800-416-8628, 7:00 am - 5:00 pm, Pacific Standard Time, Monday through
Friday or e-mail us at
edelbrock@edelbrock.com. Please fill out and mail your warranty card.
This part is street legal in all 50 states for use on 1996-2001 Honda Acura Integra Type R vehicles.
1. Please read through the entire instruction sheet to familiarize yourself with the installation before you begin.
2. Start the engine and check for loose connections or coolant/vacuum leaks, etc.
3. Disconnect the negative battery terminal.
4. Remove the air filter duct, all vacuum hoses, water (coolant) hoses and electrical connectors from the stock
throttle body. Mark all hoses and wires to ensure that they are installed correctly on the new throttle body.
Note: Engine coolant may run from the hoses once disconnected. Plug the end of the hose temporarily.
5. Disconnect the throttle linkage by opening the throttle manually and slipping the cable from the cam groove on
the linkage.
6. Remove the four nuts securing the throttle body to the intake manifold and remove it.
7. Remove the MAP (see Figure 1 for MAP sensor location) sensor from the factory throttle body. Use the new
O-ring with the blue stripe from the kit contents to seal the MAP sensor to the new Edelbrock throttle body. Attach
the MAP sensor to the new throttle body using the factory screws.
Note: To achieve the maximum benefits when re-using the factory intake manifold, you should match the opening
on the intake manifold to the size of the new throttle body bore. The manifold should be port-matched OFF the
engine and thoroughly cleaned prior to re-installation. If using Edelbrock Victor X PN 4764 or 4765, no grinding
is needed. These manifolds are already bore-matched to this throttle body. Refer to the OEM owner's manual for
removal/installation procedure of the intake manifold. Use the gasket as a template to mark the manifold for
grinding.
8. Be certain the throttle body flange surface on the intake manifold is clean and free of debris. Using the factory
nuts and bolts and the new gasket supplied in the kit, attach the throttle body to the intake manifold. Torque nuts
and bolts down to 20 N·m or 14 ft. lbs.
9. Slip the throttle cable on the linkage arm.
10. Observe the throttle body while an assistant presses and releases the gas pedal to ensure that the throttle blade
opens and closes completely as well as smoothly. Adjust the cable nut as necessary to achieve W.O.T.
11. Re-attach the air filter duct, all vacuum hoses, coolant hoses and electrical connectors to the new throttle body.
12. Re-connect the negative battery terminal.
13. Add coolant as necessary.
14. Start the engine and check for loose connections or coolant/vacuum leaks, etc.
15. After the engine is warmed up, check the idle speed (refer to owner’s manual).
INSTALLATION INSTRUCTIONS