Mallory Ignition ACCEL MAGNETIC BREAKERLESS DISTRIBUTORS 71000 - Manual

1 ACCEL TECHNICAL SUPPORT 216.688.8300 ext. 500 www.mrgasket.com
ACCEL ® 71000 SERIES MAGNETIC
BREAKERLESS DISTRIBUTORS
INSTALLATION INSTRUCTIONS
AND TECHNICAL INFORMATION
FORM A1454 (REV. F) 04/03
GENERAL INFORMATION
ACCEL 71000 Series distributors feature a magnetic triggering
device with an adjustable mechanical advance as well as a totally
independent adjustable vacuum advance. The electronic module is
designed for use with 12-volt negative ground systems only.
Accel 71000 distributors are smog legal for specific applications.
Contact the factory for applications that have been granted
C.A.R.B. exemptions.
ACCEL 71000 distributors utilize an internal module and therefore
do not require an external ignition box. However, 71000 series
distributors are compatible with most ignition amplifier boxes
(including those from ACCEL and Mallory) if a hotter spark is
required.
Cap
71000 series distributors are supplied with a standard clip-on cap
with traditional female spark plug wire receptors.
A screw-down cap with male spark plug type posts is available.
The kit (PN 8345) includes the cap, a special rotor and mounting
hardware.
Spark Plug Wires
Do not use solid metal core spark plug wires. Suppression type
plug wires must be used (carbon core or spiral core). Solid core
wires will cause false triggering and eventual module failure.
Coils
When installing your new distributor, it is important to check the
primary resistance of the coil. To do this, use an ohmmeter and
with the ignition switch off, check across the + and – terminals of
the coil. The resistance value should be less than 1 ohm. If the
resistance is greater than 1 ohm, you have a coil which was
designed for a factory points style distributor. Using a coil which
was designed for a points style ignition will cause the electronic
module to overheat and fail. ACCEL recommends using a coil
designed for an electronic breakerless ignition system which,
ideally, has a primary resistance of less than 1 ohm. ACCEL part
numbers 140001, 140008, 8145, or 8145C will work exceptionally
well. Please note that an ACCEL 71000 Series Distributors should
never be run with a CD Coil, without the use of a CD Control Box.
NOTE: Failure to use a coil with the proper primary resistance
(less than 1 ohm) will void your warranty.
Reluctor to Pickup Gap
The gap should be checked when installing the distributor for the
first time. The gap should be as small as possible without rubbing.
The gap must be .010” to .020". If starting problems occur, make
sure that the gap is still less than .020".
Distributor Gear
ACCEL 71000 series distributors include a steel gear which is
compatible with most flat tappet cams, as well as factory type
hydraulic roller cams.
Some 71000 series distributors do not include a gear. If your
application requires a gear, instructions are included on how to
install your stock gear onto the ACCEL distributor.
Welding
Disconnect the distributor wire harness before welding on the
vehicle.
Mechanical Advance
The mechanical advance is factory set to provide 24° (crank)
advance all in by 3000 RPM. This is a good general purpose curve
and will work for most applications.
NOTE: Check local smog laws before changing the advance
curve. Advance adjustments should only be made by qualified
personnel with the proper test equipment.
To gain access to the mechanical advance, remove the cap, rotor,
reluctor, vacuum advance chamber and the pickup plate. The
reluctor can be pulled off the rotor sleeve using a small gear
puller. Do not lose the small roll pin that drives the reluctor. The
vacuum advance chamber is held in place with two screws and
an e-clip. The pickup plate is held in place by two small set
screws in the side of the distributor housing. See the enclosed
instruction sheet for instructions on advance adjustment.
Vacuum Advance
The vacuum advance operates independently from the mechanical
advance. The vacuum chamber is factory adjusted to produce 10°
advance (crank) at 10" of vacuum. The vacuum advance can be
adjusted by inserting a 3/32" allen wrench into the hose nipple on
the vacuum chamber. Turn the wrench clockwise to increase
advance, counterclockwise to decrease. See Figure 1.
NOTE: Check local smog laws before adjusting the vacuum
advance.
In most cases, the vacuum advance hose should be connected
to a ported vacuum outlet on the carburetor. This is the same
location as stock. However, in some cases where a very large
camshaft is used, connecting the vacuum hose to full manifold
vacuum (near the bottom of the carb) will improve idle.
Vacuum Advance Lockout
If the vacuum advance is not going to be used (such as for
racing), the vacuum advance chamber can be removed and
replaced with the enclosed lockout. The lockout covers the hole
in the distributor housing and prevents the pickup plate from
rotating.
LL EE SS SS
A A D D V VA A N NC CE E MM
OO
RR EE
AA
D D V V A A
N N
C C E E
FIGURE 1