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delco alternator

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Forum Name: Electrical - non engine
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Topic: delco alternator
Posted By: 69amxman
Subject: delco alternator
Date Posted: Apr/04/2012 at 1:24pm
does anybody know where the list is that had all the cars that were suppose use possible alternators , having a hard time finding a alternator for my 69 amx want to upgrade to 90 amps min.



Replies:
Posted By: whizkidder
Date Posted: Apr/04/2012 at 2:36pm
http://theamcforum.com/forum/alternator-conversion-motorola-to-cs130_topic17485.html?KW=130" rel="nofollow - http://theamcforum.com/forum/alternator-conversion-motorola-to-cs130_topic17485.html?KW=130

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Ron Frost
marne1ancient @ gmail.com
910 nine two two 0563

"There is no limit to what a man can do, so long as he does not care a straw who gets credit for it. Charles Montague


Posted By: 69amxman
Date Posted: Apr/04/2012 at 2:45pm
there was a list of gm cars that showed what years the cars were and what alternators they used and amperage , i remember seeing it around 2 weeks ago. the problem is whenever we looked up a high amp alt they all had a serpintine pulley, is there any with the v belt?


Posted By: whizkidder
Date Posted: Apr/04/2012 at 3:03pm
Check the shaft sizes -- you may be able to swap the pulleys with in impact gun.

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Ron Frost
marne1ancient @ gmail.com
910 nine two two 0563

"There is no limit to what a man can do, so long as he does not care a straw who gets credit for it. Charles Montague


Posted By: 69amxman
Date Posted: Apr/04/2012 at 3:38pm
yeah we went thru that the motorola alt is smaller , my only other option is going to junk yard and getting a pully off a newer alt , its just the car list had good info


Posted By: THE MENACE
Date Posted: Apr/04/2012 at 5:28pm
Originally posted by 69amxman 69amxman wrote:

does anybody know where the list is that had all the cars that were suppose use possible alternators , having a hard time finding a alternator for my 69 amx want to upgrade to 90 amps min.
 
I never saw this list you are refering to, but I'm converting my 70 AMX to a Delco Alt. too. 
 
Rather than using the CS series Alt.(which has weird mounting IMO) I'm going to keep things simple by using a Delco 12SI Alt. which is what was used on an 87 Grand Wagoneer 360. That way (rather then spending time fabricating brackets, or butchering the Alt. housing to fit the early car mounting bracket) I am using the Alt. bracket from an 87 Grand Wagoneer 360 and have a simple bolt on Alt. upgrade. The GW also uses a V-belt like you are looking for. The NAPA part number for the 94 Amp. Delco 12SI Alt. is #NAE 66042. You can also get 100 Amp and higher versions of that same Alt. from Summit Racing.
Cool 
Dennis  


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Former Owner of:
The Craig Breedlove "AERO AMX"

Still Owner:
SS/AMX #9 replica (THE BIG MENACE)
70 AMX 416, EFI, Nash 5 speed   
70 Javelin 401, 727 (Wife's)
72 Gremlin Autocross Project.


Posted By: 69amxman
Date Posted: Apr/04/2012 at 8:24pm
thank-you for the input, the list was refrence from someone who requested it, saying something like everybody talks about these gm alternators 10si,12si, and the cs130, but nobody says what cars they came from. sounds like you have it under control, and i will look into it, might be a matter of finding a bracket, but again thank-you appreciate it


Posted By: KermitDRambler
Date Posted: Apr/05/2012 at 7:13am
Powermaster makes a 10si that bolts into the stock Motorola brackets. Also, it's pretty easy to modify a 10si to fit in place of a Motorola alternator. All you need to do is cut down the pivot boss on the case.
 
Matt


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1967 American wagon

http://www.mattsoldcars.com" rel="nofollow - http://www.mattsoldcars.com


Posted By: 69amxman
Date Posted: Apr/05/2012 at 7:57am
the problem is going to a parts store they always want to know what year the alt came from , so asking for a 10si is useless , they have no idea what that means


Posted By: 69amxman
Date Posted: Apr/05/2012 at 8:08am
has anybody use the bulltear alt bracket , would that work for a 12si?


Posted By: KermitDRambler
Date Posted: Apr/05/2012 at 10:36am
The 10si was used from the early 70's (72 or 73 I think) through the 80's. Take your pick of any GM car or truck from that time period and you'll be all set.
 
Matt


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1967 American wagon

http://www.mattsoldcars.com" rel="nofollow - http://www.mattsoldcars.com


Posted By: billd
Date Posted: Apr/05/2012 at 1:50pm
Gee, Dennis - that info looks familiar!

 Some info I shared a while back ->

The 10si was the first internal regulator alternator - from GM for sure, but I believe from anyone.
It was used from the early 70s to the mid 80s and can be found all over. Physically larger than the Motorola units.
Then the 12si came out in the mid 80s to end up replacing the 10si. A few design changes and improvements. They included larger stator and rotor, heavier/larger diodes, this way GM could get more output from them.
Then the CS series replaced that for the late 80s and into the 90s.

The CS alternators are what GM came out with to replace their aging SI line. They put out a bit more amperage with a lighter weight.
The number after the CS is the diameter of the unit across the stator - that's the core that has the ring of windings in it, so that's very nearly the outside diameter of the alternator.
So a CS121 is about 121 mm across the outside of the stator. The CS130 is 130 mm across the stator.
The design was also a bit different in that they didn't use a diode trio for the first time with this CS series.






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