PN29388 Datasheet, PDF (1/2 Pages) Mallory performance club – Competition Return Style Fuel Pressure Regulator

Competition Return Style
Fuel Pressure Regulator
PN 29388
IMPORTANT: This regulator must use a fuel return line. The fuel return line runs between the fuel
bypass port of the regulator and the fuel tank. Fuel pressures cannot be adjusted if the fuel return
line is absent.
Parts Included in this kit:
1 - Fuel Pressure Regulator
1 - Bracket
2 - Bracket Mounting Screws
2 - 3/8" NPT Pipe Plugs
2 - AN-8 Fittings
2 - O-rings for Fittings
SPECIFICATIONS:
Port thread sizes: 3/8" NPT and AN-8
Adjustment range: 4-25 PSII
Fuel Application: Gasoline and Alcohol/Methanol
GENERAL INFORMATION
Mallory’s 4305M regulator regulates fuel pressure between high
pressure fuel pumps and carburetors or throttle body fuel injection systems. The regulator is
recommended for fuel pumps up to 200 gallons per hour.
The 4307M regulator is a
return style fuel pressure
regulator. The excess
fuel and fuel pressure
is sent back to the fuel
tank through the fuel
return line. The fuel return
line runs between the
fuel bypass port of the
regulator and the top of
the fuel tank. The fuel tank
must have provisions for
a fuel return line.
This regulator is equipped
with a vacuum/boost
compensation port (brass
barb fitting) that can be
used to momentarily
decrease fuel pressure
(vacuum compensation) at idle and part throttle, or increase fuel pressure under blower boost (boost
compen- sation). While it is not necessary to connect a hose to the vacuum/boost compensation port,
it may be beneficial in some cases. However, the small plug on the barb must be removed before use.
You can mount the 4307M regulator at any angle. For maximum efficiency, mount it as close as
possible to the carb or throttle body. DO NOT mount the regulator on or near exhaust
manifolds. A bracket is provided for convenient mounting.
M S D  •  WWW.MSDPERFORMANCE.COM • [phone] • FAX [phone]