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Delco Alternators (long)

To: DANMAS@aol.com
Subject: Delco Alternators (long)
From: "Ryan Smith" <shmitty99@hotmail.com>
Date: Sat, 31 Oct 1998 13:09:12 PST
Ok guys here's the deal on Delco replacement alternators.  Barry 
wondered yesterday if there was a direct bolt on replacement in part 
stores computers.  Well I can't swear to all part stores but NAPA does 
not list a GM style alternator for triumphs.  (I looked up several years 
of spits and TR-6's)  However I did happen upon a footnote for a voltage 
regulator for a car with a Delco alternator.  I'm assuming that 
somewhere along the line Triumph used a few delco alternators (low amp 
37A or so) along with the Lucas units.  

Now on to the 7127 model that dan suggested.  I interchanged this and it 
came up to 2 "families" of GM alternators.  The 2 families basically had 
the same housing but one was rated at 42A and the other 63A.  This leads 
me to believe that #7127 is housing style not a specific alternator.  
Within the 42A and 63A families my dad stocked 6 different alternators 
that all interchanged to the 7127.  The different alternators were very 
similar but the connections were rotated, what in the industry is 
referred to as clock position.

Ok so what do you guys ask for if you want to buy one of these things.  
Like Barry said, if you're in a store with real books and ppl who know 
how to use them just asking for a GM 63A alternator should get you the 
right one (with various clock positions).  I searched the books through 
the Chevy line and that alternator was used for nearly 30 years in 
almost every Chevy car.  There is the possibility of getting a double 
pulley version but the books should point this out.  The NAPA number is 
13-4011 (with A & B variants for clock position) for a 63A alternator.  
The 42A family is 13-4010 (A & B).

Whew (getting long winded here)...
Hope this helps. And if anyone would like that number interchanged to 
practically any part store or brand just let me know.

Ryan Smith
72 Emerald Green Spit
VT 27 WVU 13


>On all three of the alternators I have, there is a decal or a sticker 
on the
>side with some form of 7127 on it- something like M7127S-5, or 
14-7127-P, or
>some such (these are all fictitious numbers), not stamped on the case. 
The
>three came from two different stores, and three different re-builders. 
Also,
>when I bought the last one, the clerk I first dealt with didn't know 
what to
>get for me, so he asked one of the more experienced clerks, who 
answered "oh,
>yeah, that'd be a 7127."
>
>From that, I assumed 7127 may be a universal number of sorts. 
Never-the-less,
>I will be interested to see what you learn from your Dad.  This is one 
of the
>most common questions I get about the conversion. If you can get some 
good
>part numbers, it would be a great help.
>
>On two of the units, the amperage is stamped on the side, but whether 
that
>means anything or not, I don't know.
>
>Sorry your not feeling well, hope you get better soon.
>
>Dan
>



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