[Fot] What alternators are you using on a Spitfire?

[Mike Harmuth]

Thanks for all the info. A bad 3 wire connector was what started all this
and a new one fixed my immediate problem. A couple of Denso, single wire
types, are on the way here as well as assorted brackets and a 4" pulley.
The good news is I don't need to scramble to make my next 3 events (just
make sure the battery charger is in the new camper) and hope to have the
reengineered parts installed in time for PittRace.

thank you

mike h

On Mon, May 19, 2025 at 5:26 PM R. John Lye via Fot <fot at autox.team.net>
wrote:

> The Suzuki 1987/1989 Samurai alternator that was mentioned previously is a
> three wire alternator, and is very small.  You will have to make some
> mounting
> bracket changes, but it fits well.
>
> John
>
> On Mon, 19 May 2025 13:02:50 -0700, "TeriAnn J. Wakeman via Fot" <
> fot at autox.team.net> wrote:
>
>
> While on the subject of alternators ...
>
> Once upon a time, a couple decades past I purchased an alternator
> conversion kit from a Morgan parts house for my TR3. About 7 or 8 years ago
> it failed while I was near Laughlin NV. I had a local shop fix it. They
> replaced my 3 wire alternator with a single wire system that used the wire
> going to the idiot light to charge the battery. For the past few years the
> alternator output didn't start charging until I hit about 2000 RPM and
> didn't go to a full 15V charge unless the engine was turning 3200 RPM or
> better. The 2 wire connector on the side of the alternator has a wire they
> never connected to anything.
>
> I've been tempted to replace the alternator with a 3 wire system that
> starts charging when it is supposed to but have no idea which alternator to
> buy.
>
> I never wrote down the number or ID of the alternator I purchased from the
> Morgan shop and forgot which shop it was. I've only worked with Delco 10 &
> 12SI alternators and what's in there appears slightly smaller.
>
> So what is a good 3 wire alternator that fits a TR3 bay? I have an
> electric fan so I would guess 60 AMPS would be more than enough for the
> fan, headlamps, and a pair of aux lamps.
>
> Suggestions?
>
>    TeriAnn
>
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