Edelbrock 4779 User manual

Catalog #4779
Rev.10/05 - RS/mc
©2005 Edelbrock Corporation
Brochure #63-0463
Page 1 of 2
®
SECONDARY FUEL RAIL
For B-Series Honda Performer X Intake Manifolds
Catalog #4779
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before beginning this installation. Most installations can be accomplished with common tools and
procedures. However, you should be familiar with and comfortable working on your vehicle. If you do not feel comfortable performing this
installation, it is recommended to have the installation completed by a qualified mechanic. If you have any questions, 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 [email protected].
NOTE: Proper installation is the responsibility of the installer. Improper installation may result in poor performance and engine or vehicle damage.
PLEASE complete and mail your warranty card. Be sure to write the model number of this product in the "Part #____" space. THANK YOU.
•Description: The Edelbrock Secondary Fuel Rail kit for the Performer X intake manifold allows the use of secondary fuel injectors on
Performer X manifolds, 4771, 4774, and 4778, for turbocharged, alcohol-fueled, or nitrous oxide applications, where additional injectors are
needed. Performer X manifolds must use PICO-style secondary fuel injectors.
Kit Contents:
❑ 1 Secondary fuel rail
❑2 1/4-20 x 1.25” bolts
❑2 1/4” AN washer
❑2 1/4” Star washer
❑2 3/8” NPT x -6 AN Adapter fittings
•NOTE: If the intake manifold is on the engine, it must be removed before attempting to install the Secondary Fuel Rail. Drilling
of the injector bosses is required, and metal chips could get into the engine if intake manifold is not removed prior to drilling.
Refer to your intake manifold installation instructions, or your factory service manual for proper removal procedure.
•WARNING: When working around gasoline or with any fuel system, always work in a well-ventilated area. Keep all sparks,
open flames, or other sources of ignition away from the work area. Failure to do so could result in a fire or explosion causing
vehicle or property damage, personal injury, and/or death.
• INJECTORS: Performer X intake manifolds require the use of a Pico-style fuel injector (See Fig. 1) . See chart below for recommended
Edelbrock fuel injectors. Select the size that is appropriate for your particular application.
FUEL INJECTOR DESCRIPTION
#3574 19 lbs/hour @ 44 psi (185cc/min)
#3583 29 lbs/hour @ 44 psi (281cc/min)
#3635 35 lbs/hour @ 44 psi (340cc/min)
#3685 44 lbs/hour @ 44 psi (427cc/min)
Figure 1 - Pico-Style Fuel Injector

Catalog #4779
Rev.10/05 - RS/mc
©2005 Edelbrock Corporation
Brochure #63-0463
Page 2 of 2
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
Tech-Line: 800-416-8628 • E-Mail: [email protected]
INSTALLATION PROCEDURE
1. Support and secure the intake manifold properly in a drill
press or on a work bench to allow a straight drill path to the
injector bosses (See Fig. 2 for reference) .
2. Using a 7/16” drill bit, drill through the blind holes in the
injector bosses.
Warning: Use caution as the drill may tend to kick back
as it breaks through to the intake manifold runners.
Warning: Be careful not to damage the o-ring sealing
surface when drilling the injector bosses.
4. Insert the appropriate injectors for your application into the
intake manifold.
5. Press the fuel rail onto the injectors. Using a fuel system safe
lubricant on the o-rings will help make this easier.
6. Bolt the fuel rail to the Performer-X intake manifold using the
supplied 1/4-20x1-1/4” bolts and the supplied washers.
7. Apply a fuel system safe thread sealant to the threads of the
3/8”NPTx-6AN adapters and install them into the ends of the
fuel rail.
Note: You may also use any adapter fitting with 3/8”NPT
threads, if it is more suitable to your fuel system. Also, be sure
to allow the sealant to cure completely before allowing fuel
through the fuel rail. Fittings may also be installed before
mounting fuel rail onto the intake manifold. Make sure to
secure the fuel rail in a soft jaw bench vise.
Fig. 2 - Reference Dimensions
7/16” Dia.
20° (4771)
23° (4774 & 4778)
1/4-20
(Coarse Thread)