Setting distributor timing

[Cecil12]

I have a 620 ford tractor 12v system redid the whole electrical system trying to set the timing.Some say when number 1 cylinder tdc the flywheel should be at 4 degrees and the rotor should be pointing towards the 1 cylinder direction or is it at the 6 o’clock position

 

[john in la]

When the number one cylinder is at 4 degrees before top dead center on the compression stroke the rotor should be pointing to the number one spark plug wire on the distributor cap.
6v 8v 12v one million volts has nothing to do with it.

 

[da.bees]

When the number one cylinder is at 4 degrees before top dead center on the compression stroke the rotor should be pointing to the number one spark plug wire on the distributor cap.
6v 8v 12v one million volts has nothing to do with it.

AND piston comes to tdc ( 4 degrees btdc) once when rotor points to number one spark plug wire and again when rotor is pointing 180 degrees from number one spark plug wire.

 

[Cecil12]

Thank you

 

[Dick L]

I have a 620 ford tractor 12v system redid the whole electrical system trying to set the timing.Some say when number 1 cylinder tdc the flywheel should be at 4 degrees and the rotor should be pointing towards the 1 cylinder direction or is it at the 6 o’clock position

I personally would have number one piston at top dead center with the points just ready to open and the rotor pointing at the number one wire. then let the mechanical advance below the points in the distributor take care of the 4 degrees advance when the engine is rotating.
.

 

[Cecil12]

Thanks for the input

 

[da.bees]

Thanks for the input

Hopefully it results in output.