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

[R. John Lye]

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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