Distributor Adjustment

[mike.perry]

As a matter of interest does anyone know the degrees between the graduation marks on the vernier adjustment on a 25D4 dizzy?

[MarkyB]

Sometime, somewhere I've seen a figure for the range of adjustment from the vernier.
I can't actually remember the number but it was small, I'm thinking 5 degrees from one end to the other, could be less.
You could get and idea by using a timing light and estimating how much the mark moves over the whole range.

[mike.perry]

Cheers for that suggestion. I would have thought that the graduation spacing would have been published somewhere.

[Leo]

Mike
In the manual it reads '' each graduation at the point shown by the upper arrow represents an approximate timing movement of 5 degrees. This is equal to 55 clicks on the adjusting nut''
Leo

[bmcecosse]

Good grief - anyone have the patience to count clicks??? Doesn't matter anyway - what does matter is PINKING! Just advance till it pinks - then retard slightly. It's then optimized for the conditions you have.

[mike.perry]

Thanks folks