I have the 12si alt and the sites helped. I am pulling off the alt tomorrow
and tossing it. Then rewiring it to eliminate the external regulator.
Thanks, you saved me allot of time.
Al
----- Original Message -----
From: "Bow Tie" <[EMAIL PROTECTED]>
To: "The Chevelle Mailing List" <[email protected]>
Sent: Thursday, September 15, 2005 11:45 AM
Subject: Re: [Chevelle-list] alternator stopped charging new with old
You probably have an old DN model. You can't use the
external regulator with an internal one. It's one or
the other. If your not concerned about being "correct"
as far as originality, I would suggest you move up to
a SI alternator. A 12SI 94 amp is simple to install.
They're are several sites to help you do this. These
are a couple of links for you to look at.
This is a good article...
http://hotrod.com/techarticles/pit/index15.html
also M.A.D. has alot of info.....
http://www.madelectrical.com/electricaltech/delcoremy.shtml
The fact that you have a serpentine belt means nothing
as far as which alt. you have. You can put that belt
on just about anything with the right pulleys. Hope
this helps you out. I did this swap to a 12 SI on my
'66.
You won't regret it. Especially if your in a slow
cruise. And if you add air, radio amp, elect. fans,
etc later on you'll be all set with enough amps to run
everything.
--- Al Hembd <[EMAIL PROTECTED]> wrote:
I am not sure if it is a 10si or a 12si it has a
serpentine belt. The
battery is good it holds a charge. The car does not
run when the battery
cable is pulled off. The car dies. Is it ok to run
the old voltage regulator
with the alt that has the built in regulator. When
I turn the key on with
out the car running should I have 12 voltage at the
alt and what wire
should it be. I believe that on the alt, on the back
where the wires plug in
there is the letter "F" on one side and not sure the
letter on the other
side of the plug in. I am going to take the alt off
and have it checked. But
back again to the switched hot wire to the alt? If
there is not a hot to the
alt do I go back to the external voltage regulator.
Thanks
AL
----- Original Message -----
From: "Bow Tie" <[EMAIL PROTECTED]>
To: "The Chevelle Mailing List"
<[email protected]>
Sent: Wednesday, September 14, 2005 11:41 AM
Subject: Re: [Chevelle-list] alternator stopped
charging new with old
> What do you mean by "new style alternator"? Is it
a
> 10SI or 12 SI? If it is, it has an internal
regulator.
> If it's a DN "old style" you have an external
> regulator. You will only have as many volts at the
> alt. as you have in the battery with the car not
> running. You can check the alt. With a volt meter
on
> DC you can check at the battery or on the bus bar
of
> your horn relay(10 ga. red wire) while the engine
is
> running at about 2400 rpm. You should show about
14.5
> volts. If not, take your alt. to a store that can
> check it. This test is not always accurate. You
may
> have a bad alt. and the thing will test good. The
> charging wire going to the regulator will be a 20
ga.
> red. It should be the 2nd wire from the pass.
side.
> You may have a weak battery also that won't hold a
> charge.
> --- Al Hembd <[EMAIL PROTECTED]> wrote:
>
>> I have a question I have a 70 Chevelle SS and
when I
>> got it a new style alternator and the original
>> voltage regulator is on it. and it stopped
charging.
>> This is my question. When I turn on the key
should I
>> have 12 volts to the alt, and from what lead
coming
>> out of the old regulator should it be. If I don't
>> should I replace the old regulator or should I
>> bypass it. If I do? how do I do it and still keep
>> the idiot light working normal. I need to fix
this
>> because I will be going on a car cruse on OCT.
10.
>>
>> Thanks
>>
>> AL
>
>
>
>
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>
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