Holley VR2 Installation Instructions Manual

WARNING! THESE INSTRUCTIONS MUST BE READ AND FULLY UNDERSTOOD BEFORE BEGINNING INSTALLATION.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN POOR PERFORMANCE, VEHICLE DAMAGE,
PERSONAL INJURY, OR DEATH. IF THESE INSTRUCTIONS ARE NOT FULLY UNDERSTOOD, INSTALLATION
SHOULD NOT BE ATTEMPTED. PLEASE CONSULT HOLLEY TECH SERVICE OR A QUALIFIED MECHANIC.
NOTE: DESIGNED FOR GASOLINE AND INTERMITTENT NON-HIGHWAY USE WITH METHANOL & E85.
APPLICATIONS:
Part Compatible
Application
Number up to 18.5V Compatibility
The pumps below do not have an internal bypass. A bypass style regulator and return line are required.
Pump Gas,
Street/Strip Race Gas,
12-3000 Yes
Race Methanol*,
Pump Gas,
Street/Strip Race Gas,
12-3000-2 Yes
Race Methanol*,
*Compatible for methanol and E85 for competitive drag race use only- when draining and flushing after each race event
** HP estimates are based on gasoline. Estimates calculated at 18.5V and at .5 BSFC NA and .65 BSFC FI. Individual systems will vary based on fuel system design, regulator type, fuel cell location, launch G's, etc.
PARTS REQUIRED FOR INSTALLATION:

One Pre-Filter for the 12-3000 & two Pre-Filters for the 12-3000-2.

Post-Filter

Relay Kit (30amp minimum) – Holley P/N 12-753 or equivalent

Fuel hose and fittings (12-3000 has a single -16AN O-ring Inlet and a single -10AN O-ring Outlet)

Wire & connectors

Mounting hardware
NOTE: These pumps are not serviceable in the field. Contact Holley tech service for fuel pump service.
INTRODUCTION:
Congratulations on your purchase of the Holley VR2 Fuel Pump. This instruction sheet contains all the information needed to install
this fuel pump. Please read all the WARNINGS and NOTES. They contain valuable information that can save you time and money.
Holley Performance Products cannot and will not be responsible for any alleged or actual engine or other damage, or other conditions
resulting from misapplication of the fuel pumps and fuel pressure regulators described herein. However, it is our intent to provide the
best possible products for our customer; products that perform properly and satisfy your expectations. Should you need information or
parts assistance, please contact Technical Service at 1-270-781-9741, M-F, 8 a.m. to 6 p.m. & Sat. 9 a.m. to 3 p.m. CST. Please have
the P/N ready when calling.
NOTE: A screen type pre-filter (100 micron), a top quality post fuel filter, fuel hose and clamps, 12 gauge wire, fuel fittings, assorted
terminals and a relay kit (P/N 12-753) is required to complete the installation of the Holley VR2 fuel pump. These parts are not
included with the fuel pump.
NOTE: These Holley VR2 fuel pumps require the use of a bypass style fuel pressure regulator (P/N 12-852 for the 2-port & 12-865 for
the 4-port) for carbureted applications and (P/N 12-851 for the 2-port & 12-864 for the 4-port) for EFI applications.
NOTE: The Holley VR2 fuel pump utilizes o-ring sealed inlet/outlet ports. These ports are not pipe thread, therefore DO not use
thread sealant.
PUMP MOUNTING AND INSTALLATION:
The best location for mounting any electric fuel pump is the rear of the vehicle, near the fuel tank and in a position even with or below
the bottom of the tank, allowing the fuel to be gravity fed to the pump. The pump should be mounted on a solid member, such as
the chassis, with the pump outlet pointing forward. Avoid exposure of the pump and fuel lines to moving parts and to any hot
areas, such as the exhaust manifold. The pump should not be mounted in an enclosed area, such as the vehicle's trunk. Follow the
steps below for mounting the pump.
GPH Flow at
Max HP**
Fuel
Rated PSI
and 13.8V
Naturally Forced
Aspirated Induction
4800 3600
323@ 8 PSI
276@ 43 PSI 4400 3350
4000 3200
254@ 60 PSI
E-85* 169 @ 130 PSI 3000 2300
323@ 8 PSI 4800 3600
276@ 43 PSI 4400 3350
254@ 60 PSI 4000 3200
169 @ 130 PSI 3000 2300
E-85*
(12-3000-2 has dual -10AN O-ring Inlets and a single -10AN O-ring Outlet)
HOLLEY VR2 FUEL PUMPS
P/N 12-3000 & 12-3000-2
Installation Instructions 199R10975
Holley Recommendations for Peak Performance
Minimum Recommended
Pump Fitting Size
Line Size
Inlet Outlet Inlet Outlet Return
-16AN -10AN -16AN -10AN
-10AN -10AN
-10AN -10AN
(qty 2) (qty 2)
Fuel Filter Fuel Filter
(Carbureted) (Fuel injected)
Pre Post Pre Post
-8AN 162-577 162-576 162-577 162-575
-8AN 162-577 162-576 162-577 162-575
Recommended
Regulator
Max Amp
Draw
Carb EFI
12-852 12-851
38 Amps
12-865 12-864
12-852 12-851
38 Amps
12-865 12-864