Mallory Ignition Mallory MAX-FIRE AND E-FIRE ELECTRONIC DISTRIBUTORS - Manual (Page 3)

Additional Connections
There is a brass fitting extending from the bottom
of the distributor bowl. This fitting should be
attached to the ported vacuum source so that the
vacuum advance and boost retard features will
work. If you are NOT using either of these, this
fitting does not need to be connected. If you are
using the existing vacuum hose from the original
distributor, check is for cracks or an oily coating
on the inside. Replace it as necessary.
SETTING THE DISTRIBUTOR
12 Series MAX-Fire Distributors
There are three ways of setting up the
distributor: The switches on the circuit board,
using a PC with the EA_Comm software, or the
optional hand held LCD display control (HHC)
part number 29124.
The MAX-Fire Distributor allows you to select
advance curve, vacuum advance sensitivity, and
RPM limiter with a combination of rotary and
DIP switches on the PC board. See Photo #1.
The rotary switch selects the RPM limiter, where
“1” is 4500 RPM, and “F” is 8000 RPM in 250
RPM steps.
NOTE: Setting the rotary switch to “0” allows
the rev limiter to be set by using either a PC
with the EA_Comm software or using the hand
held controller.
The DIP switches are located just to the right of
the RPM rotary switch. DIP switch #1 is located
at the left next to the RPM rotary switch. DIP
switch #4 is located on the far right next to
distributor bowl. For the DIP switches, the UP
position is “ON” and the down position is “OFF”.
3 MALLORY TECHNICAL SUPPORT 216.688.8300 www.malloryracing.com
The DIP switches only move about 1/16”
between the UP and DOWN positions. These
DIP switches are VERY delicate and you do NOT
need to use a crow bar to move them – a very
small eye glass type screw driver and very light
pressure works well. DIP switches 1-3 select
one of the seven pre-programmed curves,
according to the table below.
DIP switch 4 selects a high or low vacuum advance
sensitivity. DIP switch 4 “OFF” results in a vacuum
advance where advance starts at 4” of vacuum,
and reaches a maximum of 10 degrees at 10” of
vacuum. If DIP switch 4 is “ON”, the vacuum
advance starts at 8” of vacuum, and reaches a
maximum of 10 degrees at 16” of vacuum.
NOTE: To use either the external programming
methods, the RPM limiter rotary switch needs to
be set at “0” position and all four DIP switches
need to be “OFF” position.
The EA_Comm software allows you to use the
drop down menu to select a preprogrammed
advance curve or design you own 3 segment
custom advance curve by simply filling in the
open windows in the program. In addition, you
can design you own vacuum advance curve by
inputting the total number of degrees of
advance you desire, the inches of vacuum at
which you have full advance, and the inches of
vacuum you want zero vacuum advance.
You can also utilize the Boost Retard feature by
selecting the number of degrees of retard (in 10ths
of a degree) per pound of boost. The rev limiting
feature is used by inputting your desire rev limit.
NOTE: We recommend you hit “Read Distributor”
to verify the current adjustments prior to making
changes. Once you hit the send button the new
adjustments will appear on the graph.
The optional Hand Held Controller or HHC has 4
buttons: Mode up/down, and Value up/down. To
adjust a particular setting, press the Mode up or
down switch until that area is displayed on the
LCD readout, then use the Value up or down
buttons to change the value. If you hold the buttons
down, after a short interval they will auto-repeat.
22 Series E-Fire Distributors
The E-Fire distributor can be adjust 3 different
ways- The switches on the circuit board, using
a PC with the EA_Comm software, or the
optional hand held LCD display control (HHC)
part number 29124. Please see Photo #2.
PHOTO #1
DIP
Switches
RPM Rotary Switch