Re: Farmall A mag timing

Posted by Paul in Mich on October 09, 2005 at 18:59:25 from (207.200.116.203):

In Reply to: Re: Farmall A mag timing posted by MACE on October 08, 2005 at 18:26:55:

Mace, You are pretty close to having it correct. Those engines and the ignition systems are pretty forgiving, in that it has to be radically out of time before any noticable difference. The correct timing proceedure is to pull the coil wire and hand crank or rotate the engine until #1 piston is at TDC on compression stroke. Verify the position with the timing mark on the fly wheel. Sometimes that is hard to find due to dirt and rust, but it is there, and can be lined up with the pointer. Next, remove the 4 wire mag cap and verify the position of the rotor to the #1 wire. That should be somewhere about 1:00. If the mag has not clicked, then loosen the mag and rotate the top of the mag toward the engine block (CCW if facing from the rear), then very slowly rotate the top of the mag away from the engine block (CW) until it clicks. YOu are then in time. If the mag clicks before you reach teh TDC timing mark, loosen the mag and rotate toward the engine (CCW) then turn the engine over until you reach TDC compression stroke, then rotate the mag away from the engine until it clicks. That is the position where you will obtain maximum power even though there is a wide latitude where it will sound fine. I know that this doesn"t sound very High Tech, but those engines weren"t meant to fit into the high tech arena, but were designed to be worked on by the most average of mechanic.

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