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

[rocky spitfire4.com]

No help here. My 1964 Spitfire came with a generator. We built it into a race car in 1971 and threw the generator away. After that I only had a battery and I fully charged it before each weekend plus a spare that I swapped out on Sunday.

--Rocky

From: Fot <fot-bounces at autox.team.net> On Behalf Of TeriAnn J. Wakeman via Fot
Sent: Monday, May 19, 2025 3:03 PM
To: fot at autox.team.net
Subject: Re: [Fot] What alternators are you using on a Spitfire?


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

[cid:image001.jpg at 01DBC8D1.B617BA50][cid:image002.jpg at 01DBC8D1.B617BA50]
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20250519/10722beb/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 225905 bytes
Desc: image001.jpg
URL: <http://autox.team.net/pipermail/fot/attachments/20250519/10722beb/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 231977 bytes
Desc: image002.jpg
URL: <http://autox.team.net/pipermail/fot/attachments/20250519/10722beb/attachment-0001.jpg>