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Farmall & IHC Tractors Discussion Forum
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Farmall B ignition timing verification

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Steve_Md

02-11-2008 04:39:51




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I am putting this question out for consideration in hopes of an explanation: I installed the mag on a Farmall B and did the initial timing using the mark on the inside bell housing and mark on the flywheel. Using the hand crank, I verified the timing was set correctly, by rotating the motor slowly in the clockwise direction until the mag's click was heard. The next step was to verify the timing was set correctly by using an induction timing light on number 1 or number 4 (in this case, either one works to verify) cylinder plug wire. With the engine idling, I spotted the caulked flywheel mark near the 8 o'clock position, looking forward in the inspection opening at the flywheel, instead of where it should be at the 6 o'clock position. Why is it that the mark is approximately 50-60 degrees off location using the timing light and yet the static timing is correct? Am I overlooking something here?

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gene bender

02-11-2008 05:09:07




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 Re: Farmall B ignition timing verification in reply to Steve_Md, 02-11-2008 04:39:51  
I think you are looking for something that aint there . If the engine fires and runs things are ok as sounds like its going the 30deg advance its supposed to when running. Its working drive and enjoy.The one thing with a mag if it aint rite it wont start and yours does so it must be ok.



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Bob

02-11-2008 05:01:06




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 Re: Farmall B ignition timing verification in reply to Steve_Md, 02-11-2008 04:39:51  
Is HAS to be @ TDC for cranking. When the engine gains speed, and the impulse kicks out, it jumps to full timing advance of about 30º ALL AT ONCE.

If you are REALLY seeing more than 30º to 35º advance, the impulse must have some worn parts.



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