[v12-engine] GMALT: fitting the CS130 to the wild cat ( long )

I’ve had 2 days with the CS130 alternator in place of the exisitng
alternator from the GMALT conversion I had done. It is nice to see a
13.5 v indication on the voltage gauge with all fans running at 750
idle!

I pulled the existing alternator that I had installed as a

recommendation in the GMALT kit from Johns Cars. This alternator was a "
lifetime rebuild " from Pep Boys. The alternator was having the " rev up
to charge " problem which finally changed to " no charge at all " .
Being the nosy person I am, I opened up the alternator and had a look,
as I thought I’d just change the voltage regulator pack & be on my way.
I found that the innards were NOT for an 80 A alternator ( the SI-12 )
as I had specified, but a SI-10 which has a much lower rating.
Furthermore, the stator that was installed had score marks showing that
the rebuilder didn’t care about the quality of the work and put in
damaged parts in the first place. So much for a lifetime warranty. I
decided to follow Kirby’s lead in his recommending installing the CS130
alternator. I then went to a local salvage yard, found several CS130
alternators ( 105 A rating, including one that had a new DELCO rebuild
sticker on it! ). and an extra SI-12 ( 96 A rating ) just in case the
CS130 didn’t work. I just had 2 big questions. 1) would it be a bolt-on
fit into the GMALT bracket? 2) what wires need to go where? And the
final answer is: 1) YES! the alternator bolted straight in. An added
bonus: the alternator is MUCH smaller physically and did not require
dropping front suspension pieces to put in place. 2) with double
checking from Kirby, I determined the BROWN wire on the plug ( cut with
the alternator ) was all that was needed to connect up the warning light
in the dash. I didn’t need any other connection other than the one to
the battery. I did have to swap pulleys, a quick brrp with the impact
wrench took care of that. I had previously beefed up the wiring to the
terminal block using 8 GA flex wire from a car audio supplier and ran a
separate fused line to supply both the electric fans in front. Do not
install this alternator without suitable wiring mods as you are almost
doubling the current output of the charging system! I now have a system
that can keep the cat cool in the 80F stop & go traffic we had 2 days
ago in Denver and also not to worry about running the battery down .
Note: I cannot replace the air pump with the alternator as the emission
nazis here are very strict about that sort of thing…total cost:
$80USD for 4 alternators ( 30 day waranty ) and the replacement for the
xj6 is next! -art- P.S. A thank you to Kirby and " the book " for the
CS130 suggetion and ID’s for the various GM alternators available.

Arthur,
Thanks for your input to the list. I’ve got to do something about my
alternator before it gets too hot here in San Antonio. I’m sure that’s why
my A/C clutches have been going out (lack of volts when idling with the A/C
on.

Charles
85 XJ6

<< Subj: [xj] GMALT: fitting the CS130 to the wild cat ( long )
Sender: owner-xj@jag-lovers.org
Reply-to: aeb1@americanisp.net
(v12-engine@jag-lovers.org)

 I've had 2 days with the CS130 alternator in place of the exisitng

alternator from the GMALT conversion I had done. It is nice to see a
13.5 v indication on the voltage gauge with all fans running at 750
idle!

 I pulled the existing alternator that I had installed as a

recommendation in the GMALT kit from Johns Cars. This alternator was a "
lifetime rebuild " from Pep Boys. The alternator was having the " rev up
to charge " problem which finally changed to " no charge at all " .
Being the nosy person I am, I opened up the alternator and had a look,
as I thought I’d just change the voltage regulator pack & be on my way.
I found that the innards were NOT for an 80 A alternator ( the SI-12 )
as I had specified, but a SI-10 which has a much lower rating.
Furthermore, the stator that was installed had score marks showing that
the rebuilder didn’t care about the quality of the work and put in
damaged parts in the first place. So much for a lifetime warranty. I
decided to follow Kirby’s lead in his recommending installing the CS130
alternator. I then went to a local salvage yard, found several CS130
alternators ( 105 A rating, including one that had a new DELCO rebuild
sticker on it! ). and an extra SI-12 ( 96 A rating ) just in case the
CS130 didn’t work. I just had 2 big questions. 1) would it be a bolt-on
fit into the GMALT bracket? 2) what wires need to go where? And the
final answer is: 1) YES! the alternator bolted straight in. An added
bonus: the alternator is MUCH smaller physically and did not require
dropping front suspension pieces to put in place. 2) with double
checking from Kirby, I determined the BROWN wire on the plug ( cut with
the alternator ) was all that was needed to connect up the warning light
in the dash. I didn’t need any other connection other than the one to
the battery. I did have to swap pulleys, a quick brrp with the impact
wrench took care of that. I had previously beefed up the wiring to the
terminal block using 8 GA flex wire from a car audio supplier and ran a
separate fused line to supply both the electric fans in front. Do not
install this alternator without suitable wiring mods as you are almost
doubling the current output of the charging system! I now have a system
that can keep the cat cool in the 80F stop & go traffic we had 2 days
ago in Denver and also not to worry about running the battery down .
Note: I cannot replace the air pump with the alternator as the emission
nazis here are very strict about that sort of thing…total cost:
$80USD for 4 alternators ( 30 day waranty ) and the replacement for the
xj6 is next! -art- P.S. A thank you to Kirby and " the book " for the
CS130 suggetion and ID’s for the various GM alternators available.Date: 04/06/2000 9:43:06 AM Central Daylight Time
From: aeb1@americanisp.net (Arthur Blackwell)
To: xj@jag-lovers.org, v12-engine@jag-lovers.org

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