Edelbrock Quiet-Flo 1791 Installation Instructions
©2008 Edelbrock Corporation
Brochure #63-0169
Catalog #s 1791, 1792
Rev. 1/08 - AJ/mc
Page 1 of 2
EDELBROCK QUIET-FLO™ ELECTRIC FUEL PUMPS
Catalog #1791 & #1792
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 edelbrock@edelbrock.com.
CAUTION:
Installation of this product should be performed by persons knowledgeable in the repair and modification of automotive fuel systems. Do not
loosen fuel system connections until relieving fuel pressure as recommended in your automotive service manual. Fuel leakage will occur
when loosening fuel system connections, eliminate potential fire hazards before loosening any fuel system connections.
DESCRIPTION: Manufactured by Essex Industries, one of the most renowned fuel system manufacturers, Quiet-Flo™ Electric Fuel Pumps feature
anodized aluminum housings and high quality internals resulting in quiet operation and long life. They are designed for use in universal carbureted
applications such as street rods and muscle cars. Both pumps feature replaceable screen type inlet filters
(NOTE: Use of an in-line fuel filter in
your fuel system is also recommended). Mounting bracket and hardware are included.
•
1791: Features a 3/8” NPT inlet and 3/8” NPT outlet. 1791 has a free flow rate of 120 gallons per hour, flows 48 gallons per hour
at 5.0 psi, and will support up to 600 horsepower. Fuel pressure is externally adjustable from 5 to 10 psi and is factory preset to
6.5 psi. A fuel pressure regulator is not required when using the factory preset 6.5 psi fuel pressure.
•
1792: Features a 1/2” NPT inlet and 1/2” NPT outlet. 1792 has a free flow rate of 160 gallons per hour, flows 80 gallons per hour
at 6.5 psi, and will support up to 1000 horsepower. Fuel pressure is factory preset to 12 psi. An external fuel pressure regulator
such as Edelbrock #1727 is required.
®
INSTALLATION
NOTE: Refer to the photos below throughout the installation. Continued instructions are on the next page.
Figure 2 - Fuel Pump
Use Mounting Bracket Holes
as A Guide for Drilling
Mounting Bracket
Clamp Bolt
Rubber
Insulator
Inlet
1791 = 3/8” NPT
1792 = 1/2” NPT
Outlet
1791 = 3/8” NPT
1792 = 1/2” NPT
Black (Ground)
Red
(12V From Relay)
Figure 1 - Fuel Pump Mounting Bracket