Farm Equipment - WD45 Ignition Timing

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WD45 Ignition Timing

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=27463
Printed Date: 27 Feb 2025 at 5:04pm
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Topic: WD45 Ignition Timing

Posted By: John_B
Subject: WD45 Ignition Timing
Date Posted: 17 Mar 2011 at 4:44pm

What works best for timing with the electronic ignition conversions. The AC manual says to use the tDC mark on flywheel to static time when points just open. What works best for electronic ignition? Can one use a timing light aimed at the flywheel marks at idle?

Replies:

Posted By: Dakota Dave
Date Posted: 17 Mar 2011 at 5:58pm

Timing light should fire on the F mark at high idle.

Posted By: TedBuiskerN.IL.
Date Posted: 17 Mar 2011 at 7:53pm

I time mine by ear from advice from an old well respected AC mechanic. Open the throttle to full open and allow to run for about 10 seconds. Snap the throttle shut and you should get one fairly loud and one soft pop from the exhaust. That works on distributor type ignitions, but not on magnetoes.

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