Tym
I just completed this conversion recently - multi step process if you want to keep the voltage regulator in place even though it will be gutted per Ron Fraziers instructional on one of the tiger websites.
I used the following parts:1. Old CAT alternator bracket - one piece - they sell a kit now. Bill Martin makes a real nice MK II reproduction bracket but pretty pricey. Also: The original MK II bracket can be hard to find - Casting #
C5JZ-10151-B
CAT sometimes lists a bracket, Reisentz Restoration has an original style
bracket and a wire conversion kit.2. Here is the alternator I used - a 100 AMP USA made 1 wire alternator but did not like their pulley and fan but they make a nice black one that is period correct.
3. I also bought a nice Jager faced volt meter gauge from Jim jim at island.net that matches existing guages nicely for around $105
4. Ron Fraziers write up on TE/TA covers the dummy up of the voltage regulator and wiring up
the dummy light pretty well.5. A new fan belt will be needed. I used Car Quest 15480 after many tries.
Hope this helps.
Joel Martin
From: "tigers-request at autox.team.net" <tigers-request at autox.team.net>
To: tigers at autox.team.net
Sent: Sunday, June 3, 2018 4:49 PM
Subject: Tigers Digest, Vol 10, Issue 129
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Today's Topics:
1. Re: Generator Conversion (Gary Winblad)
The beauty of a one-wire alternator is that you don't have to worry
about all that.
One wire (large) from the alternator to the battery (at the solenoid on
a Tiger is a good place),
and you are done. Ok, the light won't work any more, hence the
recommendation of a voltmeter.
And a fuseable link or fuse in-line perhaps.
It automatically starts (at just a little over idle speed) and regulates.
If you look at most new hot rods or old competition rally cars or
tractors, it is what everybody uses.
I and most use a GM style case. It hangs on a CAT club bracket easily
with only a small spacer.
Gary
On 6/1/2018 9:36 AM, Jay Laifman via Tigers wrote:
> I don't know a specific alternator for Tigers. But, I will add that I
> put a newer alternator on my Alpine and there is an important wiring
> feature that I didn't have right for a very long time. That is, the
> "L" wire from the alternator needs to go to the dash light - it might
> be labelled S on some alternators. Then the other wire on the dash
> light needs to go to keyed 12V - no ground for the light. This does
> two things. First, and least important, it allows the light to work
> correctly. Second, and most importantly, it lets power hit and
> initiate the coils in the alternator so that it's charging immediately
> (the coils serve as ground for the light until the charging starts,
> then the 12V at each end of the light turns it off. If you don't do
> it this way, the alternator will work - but it would need to drive a
> bit to get it to self initiate the coils. I drove for years thinking
> that the alternator just had something wrong with it, and just lived
> with it.
>
> With this set up the "Warning Light Simulator" box that the Alpine had
> is no longer used. I have no idea if a Tiger has that part.
>
> I'm assuming there would be a similar potential issue for a newer
> alternator for a Tiger.
>
> On Thu, May 31, 2018 at 4:54 PM, Dr. T. Y. McDowell via Tigers
> <tigers at autox.team.net <mailto:tigers at autox.team.net>> wrote:
>
> Tigers,
>
>
> I'm having issues with the generator on my Mk1A. It's a three (3)
> wire.
>
> Can anyone recommend an alternator and include how many wires?
>
>
> Thanks in advance,
>
>
> Tym McDowell
>
>
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