Owners manual

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Atomic EFI
PN 2921 - High Horsepower Fuel Pump Kit
Installation of this product requires detailed knowledge of automotive systems
and repair procedures. Installation of fuel system parts and any fuel tank
modifications must be carried out by a qualified automotive technician. Installation of fuel system
parts requires handling of gasoline. Ensure that work is performed in a well ventilated area with an
approved fire extinguisher nearby. Extinguish all open flames, prohibit smoking and eliminate all
sources of ignition in the area of the vehicle before beginning the installation.
When working with fuel systems, eye goggles and other safety apparel should be worn to protect
against debris and sprayed gasoline. The finished work must be thoroughly checked to ensure
there are no fuel leaks.
Parts Included:
1 - Fitting, 6AN-90°
1 - Fitting, 6AN-180°
2 - Clamps, Fuel Line
1 - Clamp (Post Filter)
1 - Banjo Fitting Kit
1 - 18mm x 8AN Inlet Fitting
3 - Self Tapping Screws
1 - Fuel Pump
1 - Filter, Post Pump
1 - 6mm x 1 Lock Nut (Pump +)
1 - 5mm x .8 Lock Nut (Pump -)
2 - Copper Washers (1 spare)
2 - Clamps (Fuel Pump Mount)
15 ft. 3/8" Fuel Line
2 ft. Black Wire (Pump Ground)
14g Ring Lug
Figure 1 High Horsepower Fuel Pump Assembly.
DANGER
CAUTION
WARNING
NOTICE
Fuel pump to
fuel tank hardware is not
supplied with this kit.
DANGER
CAUTION
WARNING
NOTICE
DANGER
CAUTION
WARNING
NOTICE
The fuel system is under pressure. Do not open the fuel system until the pressure
has been relieved. Refer to the appropriate vehicle service manual for the
procedure and precautions for relieving the fuel system pressure.
INSTALLING THE FUEL PUMP
The Atomic High Horsepower Fuel Pump is designed to support engines up to 620hp. The pump
specifications will support the volume and pressure required when being used with a returnless or
return style fuel system.
1. It is recommended to mount the pump close to the gas tank and in a position that is below the lowest
point of the tank.
2. Before mounting the pump, it is recommended to install the supplied fittings and the ground wire. See
Figure 1.
-8AN 1/2" ID FUEL LINE RE-
QUIRED TO THE TANK
(NOT SUPPLIED)
CONNECT ORANGE WIRE FROM
ATOMIC TO RED TERMINAL (12V)
CONNECT SUPPLIED GROUND WIRE TO BLUE
TERMINAL (GROUND)
-6AN
BANJO FITTING
SUPPLIED
NOTE: IT IS RECOMMENDED TO RUN -8, OR 1/2" LINE FROM THE FUEL TANK TO THE IN-
LET OF THE FUEL PUMP. THIS LINE OR TANK FITTINGS ARE NOT SUPPLIED BY MSD.
MAKE SURE
COPPER WASHER
SEATS EVENLY
TO AVOID FUEL
LEAKS
-6AN
CAP
SUPPLIED
OUTLET SIDE INLET SIDE
USE 6AN-90° OR 6AN-180° FIT-
TING (SUPPLIED) DEPENDING
ON YOUR APPLICATION.
DANGER
CAUTION
WARNING
NOTICE