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Timing and such....

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=48992
Printed Date: 25 Aug 2025 at 2:57pm
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Topic: Timing and such....
Posted By: BennyLumpkin
Subject: Timing and such....
Date Posted: 14 Apr 2012 at 6:36pm
Ok its time to swap the WC from mag to distributor and electronic ignition.....whats the easiest way to do the swap and how do I correctly set my timing up? I want it to run right when I'm done lol

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Central PA Allis Express
1934 WC254
1945 WF
1945 WC135755
1951 WD68085
1953 WD45-150217
1957 WD45D-230744D
B110



Replies:
Posted By: Dnoym N. S. Can.
Date Posted: 14 Apr 2012 at 7:11pm
You have to take the mag out and put a distributor in with an
electronic ignition in it.
then you turn the distributor to correctly set  timing up
FYI     101 on Electronic Ignition systems
Electronic Ignition systems are not as complicated as they may first appear.
In fact, they differ only slightly from conventional point ignition systems.
Like conventional ignition systems, electronic systems have two circuits:
a primary circuit and a secondary circuit. The entire secondary circuit
is the same as in a conventional ignition system. In addition, the section
of the primary circuit from the battery to the battery terminal at the coil
is the same as in a conventional ignition system.
Electronic ignition systems differ from conventional
ignition systems in the distributor component area.
Instead of a distributor cam, breaker plate, points,
and condenser, an electronic ignition system has an
armature (called by various names such as a trigger
wheel, reluctor, etc.), a pickup coil (stator, sensor, etc.),
and an electronic control module.
Essentially, all electronic ignition systems operate in the
following manner: With the ignition switch turned on,
primary (battery) current flows from the battery through
the ignition switch to the coil primary windings. Primary
current is turned on and off by the action of the armature
as it revolves past the pickup coil or sensor. As each tooth
of the armature nears the pickup coil, it creates a voltage
that signals the electronic module to turn off the coil primary
current. A timing circuit in the module will turn the current
on again after the coil field has collapsed. When the current
is off, however, the magnetic field built up in the coil is allowed
to collapse, which causes a high voltage in the secondary
windings of the coil. It is now operating on the secondary
ignition circuit, which is the same as in a conventional ignition system.
HTH
B:-)         Dnoym


Posted By: GregLawlerMinn
Date Posted: 15 Apr 2012 at 8:14am
Using the Petronix EI? If so, replace the mag with the distributor and time it as normally would. Install the Petronix module per their instructions and fire it up; you will have to fine tune the distributor to smooth out the engine, then you are done. Piece of cake.

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What this country needs is more unemployed politicians-and lawyers.
Currently have: 1 D14 and a D15S2.
With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC


Posted By: BennyLumpkin
Date Posted: 15 Apr 2012 at 9:11am
Thanks guys....Petronix was the plan

-------------
Central PA Allis Express
1934 WC254
1945 WF
1945 WC135755
1951 WD68085
1953 WD45-150217
1957 WD45D-230744D
B110



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