The MSD has an automatic retard for the starting circuit.... as I recall it
retards the timing 20 degree's when the starter button is engaged....
Keith
----------
> From: ardunbill@webtv.net
> To: RYNDBOYS@aol.com; land-speed@autox.team.net
> Subject: Re: Flathead MSD ignition
> Date: Friday, June 21, 2002 7:36 AM
>
> Bill & Josh, you get great results at Maxton with that 20 degrees lead
> in your gas Flathead. What Ardun Doug said is right too, various
> Flathead racers have told me they use 22-28. Some lore from back in the
> '50s I have here stated firmly that 21 was max on a racing
> Flathead(nitro, they meant), otherwise, you'd see your rods dangling out
> of the bottom very soon.
>
> A very experienced Flathead streetrod man of my acquaintance uses a
> Harman & Collins mag set at a fixed 18 degrees(the H & C has no
> advancer, as you know) and he says it will start without kickback, idle
> okay, and run with full power, all at that one setting.
>
> I haven't ever raced a Flathead myself, but I imagine setting the MSD at
> 5 degrees would give easy starting, and letting it advance quickly to
> whatever full advance figure is preferred, from the info that's been
> given, would give good results. What seems clear from both early and
> present knowledge is that Flatheads just don't like much ignition lead,
> and if you give it to them anyway, they will go into detonation and
> break something. Bill
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