Edelbrock 4790 Installation Instructions

INSTALLATION INSTRUCTIONS 

Acura Integra GSR VTEC Throttle Body 

Catalog #4790

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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

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This part is street legal in all 50 states for use on 1994-2001 Acura Integra GSR 1.8L Vtec. 

Throttle Body Kit Contents: 

1  -  Throttle body to manifold gasket 

1  -  Fast idle thermo valve o-ring with white stripe 

1  -  Fast idle thermo valve o-ring with red stripe 

1  -  Fast idle thermo valve o-ring with green stripe 

1  -  MAP sensor o-ring with blue strip 

1  -  E.O. # fan shroud decal 

INSTALLATION INSTRUCTIONS 

1.  Please read through the entire instruction sheet to familiarize yourself with the parts of the vehicle the installation will 

deal with. 

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 removed. 

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 throttle body.  Attach the MAP sensor to the 

new throttle body using the factory screws. 

8.  Remove the idle air control (IAC) motor (see Figure 1 for IAC motor location) from the factory throttle body.  Using the 

factory bolts and the O-rings supplied in the kit, attach the IAC to the new throttle body.   The o-rings are color-coded 

so refer to Figure 1 for proper installation.  Torque down bolts to 10 N·m or 7 lbf·/ft. 

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 hand-ground  OFF  the engine 

and thoroughly cleaned prior to re-installation.  If using Edelbrock Victor X PN 4760, 4761 or 47601, 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. 

9.  Be certain the gasket-mating 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 lbf·/ft. 

10.  Slip the throttle cable on the linkage arm. 

11.  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. 

12.  Re-attach the air filter duct, all vacuum hoses, coolant hoses and electrical connectors on the new throttle body. 

13.  Re-connect the negative battery terminal.   

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 owners manual). 

16.  Double-check all fasteners, clamps, and electrical connections to ensure they are all secure.