Mallory Ignition ACCEL 3 User Manual

Congratulations! You have purchased the ACCEL 3-STAGE REV-LIMITER.

This unit allows you to program three different rev-limits

and make use of two different RPM-activated switches.

These rev-limits and switches can be particularly useful to Drag Racers.

You must use your A

CCEL 3-STAGE REV-LIMITER

with one of the ACCEL+ ignition modules.

Use ACCEL 300+ RACE WIRE spark plug wires!

Solid-core spark plug wires emit RFI and EMI static,

which can disrupt On-board electronics.

Do not use your 3-STAGE REV-LIMITER

with more than 18 volts.

Your ACCEL 3-S

TAGE REV-LIMITER, like

any electronic component, is sensitive to heat.

Keep it away from temperatures greater than 150°F

(65°C).

Follow the installation instructions in this Owners Manual carefully.

ncorrect installation can damage the unit, your engine, and VOID YOUR WARRANTY

This unit cannot be returned to your

dealer for testing or for warranty.

It must be returned to

:

MR. GASKET PRODUCT REPAIR

8700 BROOKPARK ROAD

CLEVELAND, OH 44129

216-398-8300 Ext-310

Your warranty card must be on record at

ACCEL

to insure warranty processing.

(See your warranty card for details.)

.

This package provides everything

you will need to install your

ACCEL 3-STAGE REV-LIMITER

Wire lengths provided are enough for almost all vehicles.

If you must splice additional wire use 16 gauge wire, or larger.

THE

3-STAGE REV-LIMITER - AN OVERVIEW

our new ACCEL 3-S

TAGE

REV -LIMITER is a computer module. It is meant to be installed

etween the ignition trigger device (distributor pickup, crank trigger, etc.) and an A

nition module. It controls the signals that tells your A

n addition to the trigger input, your A

CCEL

CCEL+ ignition when to fire.

-Stage Rev-limiter uses two additional
puts to select rev-limit values. Both of
ese inputs may be connected to any type

f switch to activate selected rev-limits.

ou can then adjust their rev-limiting

nges with the key pad.

CCEL 3-Stage Rev-limiter can also

our A
ctuate, through two 2-pin connectors, two
xternal devices (Typically a N

2O solenoid and an ACCEL Shift Light). Both of these two

evices are actuated by setting their engine RPM values on the key pad.

MODES OF OPERATION

Your new ACCEL 3-Stage Rev-limiter has three different modes of operation.

1. Programming The Programming and Control modes overlap in the sense

2. Control

value you are programming and the ‘programming dot’ blinks in the upper left corner of
of the display. In Control mode the display shows current RPM.

3. Diagnostics – See Pg. 11.

that the engine’s rev-limit control is still performed while in the

Programming Mode. In Programming Mode the LED’s display the

CCEL+

PRECAUTIONS AND WARNINGS

The ACCEL 3-Stage Rev-limiter can only be used with ACCEL ignition modules.
We strongly suggest that you deactivate any N

initial programming, to prevent accidental activation.
The A

CCEL 3-Stage Rev-limiter will cause a small, fixed timing retard in the trigger.

This is due to computational delay. Engine ignition timing must be checked and
re-adjusted, to account for this delay, after your 3-Stage Rev-limiter is installed.

Use caution when selecting and changing values.
This flexible product makes it easy to select values that could damage your engine.
Start with safe values and carefully evaluate their effect. Make small changes.

2O system during installation and

CONNECTING T

TO AN

HE

ACCEL 3-STAGE REV-LIMITER

A

CCEL IGNITION SYSTEM

he ACCEL 3-Stage Rev-limiter uses special signals to communicate with your ignition

module, and your 3-Stage Rev-limiter can only be used with an A

or your rev-limiter to communicate with your ignition module

gnition module, must be re-set

UP.

CCEL ignition module.

DIP-Switch-4, inside the

• Open the ignition module’s cover plate (the one with the wires coming through it).
Unscrew the three screws and swivel it out of the way to reveal the

• Using a small tool (A pencil is good) gently push

This A

CCEL 300+ ignition box has been

DIP-Switch-4 up.

DIP-Switches.

set to rev-limit an 8-cylinder
engine at 5,000 RPM.

DIP-Switch-4

The owner has
installed an A
3-Stage Rev-limiter,
and has also set

DIP-Switch-4 up.

CCEL

Your A

CCEL ignition system’s internal

DIP-Switches are harder to access

than your rev-limiter’s buttons.

Set the ignition box’s rev-limit to the

highest value you ever expect to reach.
Your rev-limiter cannot override the

ignition’s designated rev-limit.

• When you have adjusted DIP-Switch-4, close the cover plate and
retighten all three screws.

IMPORTANT POINTS TO REMEMBER

he rev-limit set inside your ACCEL ignition module is the engine’s ultimate rev-limit.

o outside control module will ever be able to override it. When setting

-Stage Rev-limiter it is a good idea to set it a little lower than the ignition module’s limit.
his allows you to program your A

hile using the A

you remove your A

CCEL ignition module’s

CCEL ignition module’s rev-limiter as a safety.

CCEL 3-Stage Rev-limiter. remember to re-set DIP-Switch-4 inside the

CCEL 3-Stage Rev-limiter for its highest performance,

• When connected to any control module, the ignition module’s DIP-Switch-4 must be UP.

• When not connected to a control module the ignition will not start with

PEAK RPM on your

DIP-Switch-4 UP