[AT] Farmall distributors

[Ken Knierim]

I have a Pertronix on a '65 Mustang with a 200 6 banger that I'm slowly
resurrecting. The Pertronix is the way to go. I had tightened up the shaft
but the mount plate for the points was somewhat loose. While it worked the
dwell angle on the points was moving around a bit too much. The Pertronix
solved that; it's a lot more forgiving than points. Yeah, if the magnet
hits the housing you'll have trouble but if the engine was running with
points it'll probably be alright with the Pertronix. They also have a lot
more consistent on-resistance which will probably help with the coil to
make more consistent spark, especially during starting.

Just my $0.02

Ken in AZ


On Sat, Dec 16, 2017 at 4:41 AM, Stephen Offiler <soffiler at gmail.com> wrote:

> I haven't used a Pertronix ignition myself, but they do have a good
> reputation (here on ATIS and elsewhere).  They have several products, most
> designed for newer equipment and performance/race applications.  Per their
> website, the original "Ignitor" is the one for old tractors, with some 6V
> pos or neg ground models available.
>
> http://www.pertronix.com/prod/ig/ignitor/default.aspx
>
> A magnet unit slides onto the distributor shaft under the rotor, and the
> points are replaced by a little black box containing a device that senses
> when the magnet goes by.  It will probably work pretty well even if the gap
> between the magnet and black box varies due to slop in the shaft.  Up to
> the point where the magnet physically contacts the black box, I suppose.
>
> It appears that you locate the correct kit by entering the model number of
> your distributor, or, you call them the old-fashioned way.
>
> I'm thinking about one of these for my JD440IC, but haven't pulled the
> trigger yet (just a round tuit thing).  When several months go by without
> firing it up, I always need to clean the points before it will run.
>
> SO
>
>
>
>
> On Sat, Dec 16, 2017 at 12:16 AM, Darrell Ratliff <dbigdog at columbus.rr.com
> >
> wrote:
>
> > They do have 6 volt Pertronix units but since the Pertronix uses the
> > distributor shaft I think the existing play in the shaft would give the
> > same problem
> >
> > From: John Hall
> > Sent: Friday, December 15, 2017 8:24 PM
> > To: Antique tractor email discussion group
> > Subject: Re: [AT] Farmall distributors
> >
> > Don't know anything about the conversion, do they work with 6 volt
> > systems? I've got a LOT of mechanical wear in these distributors.
> >
> > John
> >
> >
> > On 12/14/2017 9:50 PM, Mike M wrote:
> > > Would converting to the Pertronix system work in it's place?
> > >
> > > Mike M
> > >
> > >
> > > On 12/14/2017 7:59 PM, John Hall wrote:
> > >>     Got a couple Super A Farmalls with worn out distributors. I put a
> > set
> > >> of points in one last spring and it was almost impossible to get them
> > >> set as the shaft has a ton of slop in it. I see there are a few
> > >> aftermarket parts for these, so this must be a common problem. To be
> > >> honest, I have never had to do anything to a distributor other than
> tune
> > >> up items. I'm assuming there are some bushings, and maybe a shaft that
> > >> need replacing. Anything in particular I should really look for? Not
> > >> wanting to make them factory perfect as we don't use them enough to
> > >> warrant that extensive of repair. But if I can wind the clock back
> 30-40
> > >> years, well that's an acceptable amount of wear I can live with. Any
> > >> advice is appreciated, probably won't get into them until first of the
> > year.
> > >>
> > >> John Hall
> > >>
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