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

TeriAnn J. Wakeman tjwakeman at gmail.com
Mon May 19 14:02:50 MDT 2025


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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20250519/ba0b109c/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_4276.jpg
Type: image/jpeg
Size: 225905 bytes
Desc: not available
URL: <http://autox.team.net/pipermail/fot/attachments/20250519/ba0b109c/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IMG_4275.jpg
Type: image/jpeg
Size: 231977 bytes
Desc: not available
URL: <http://autox.team.net/pipermail/fot/attachments/20250519/ba0b109c/attachment-0001.jpg>


More information about the Fot mailing list