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#1054719 - 12/07/17 02:34 PM Upgrading CS 144 Alternator  
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SSLance Offline
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SSLance  Offline
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Smithville, MO
So back when I installed my electric fans 6 years ago or so I also upgraded to a CS144 style alternator. Can't remember where I purchased it from but it came with the adapter plug so I could wire my choke wire up to "excite" the new alternator. It has performed flawlessly even with everything I put the car thru but apparently gave up the ghost couple of days ago.

I am looking into putting a new voltage regulator and Rectifyer in the old alternator as the rest of it is still in good shape. Has anyone here ever done this and if so, did you also upgrade it to make more amp output at the same time? Some upgrades have these alternators putting out over 200 amps...


Lance
1985 Monte Carlo SS Street Car
#1054758 - 12/11/17 09:13 AM Re: Upgrading CS 144 Alternator [Re: SSLance]  
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FinallySS Offline
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Nice Sunny Hawaii
I'm not sure if this will help, but I did a rebuilt on original-type alternator (was is called SI? Can't remember..............) with higher output kit, but that kit was, lack of a better word, conversion type rebuilt kit with one-wire setup. I believe it made higher output as I did not have any way to test it, but it did work fine and kept up with all the electrical demand that car had ( it was on my Gutless and I did convert that car to electric fan. Also had two 100w, one 250w amp), but during idle stop such as stoplight, you can actually see the headlight dims as when green light and time for you to go, it does brighten up.

So if you gonna choose to rebuilt it, make sure it's not the one-wire setup as I see lots of this type of rebuilt kit. I'm not sure this can be done (one-wire setup) on CS-type alternator, but just wanted to share my experience. Aside from that, I think heat build-up was the another issue with high-output alternator, but the knowledge I have is little bit more than a few years back.


1986 Silver MCSS - Poly bushing and Hotchkis spring w/Bilstein, Posi w/3.73, MSD 6-AL, E-Brock 600cfm, Aluminum 2-row radiator.
1986 Black MCSS - R.I.P............Finally.
#1054759 - 12/11/17 10:06 AM Re: Upgrading CS 144 Alternator [Re: SSLance]  
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Richie Cat Online content
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Richie Cat  Online Content
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Lake Ronkonkoma, N.Y.


83 SC, 355 w/TPI
#1054761 - 12/11/17 03:08 PM Re: Upgrading CS 144 Alternator [Re: SSLance]  
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gmachinz Offline
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gmachinz  Offline
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Wow Lance...them Delco CS144 alternators are super stout...yours is only 6 years old and its toast? Yikers.


gbodyparts1234@yahoo.com

HARNESSWORX
#1054764 - 12/11/17 07:53 PM Re: Upgrading CS 144 Alternator [Re: SSLance]  
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thepezking639 Offline
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Just Do an LS swap, HD OEM alternators are 250a lmao


86 SS 6.0L LQ4, TBSS GEN IV intake, 92mm TB, 30lb injectors, LS3 cam and valvesprings, stainless long tube headers, Microsquirt ECU, Built 200-4R, B&M Megashifter, Torsen LSD, QA1 Lvl 3 Suspension Kit, UMI Front & Rear Braces. Check out my build thread: http://www.pro-touring.com/threads/126188-SSLOW6-0-Build
#1054772 - 12/12/17 12:16 AM Re: Upgrading CS 144 Alternator [Re: gmachinz]  
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SSLance Offline
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SSLance  Offline
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Smithville, MO
Originally Posted by gmachinz
Wow Lance...them Delco CS144 alternators are super stout...yours is only 6 years old and its toast? Yikers.


I'm pretty sure is was operator error that did it in. I arced the fuel line from the battery wire post to the alt case a month or so ago, enough to leave an arc Mark on the case. Pretty sure that did the voltage regulator in. Rebuild parts from alternatorparts.com are here...will update tomorrow how it turns out.


Lance
1985 Monte Carlo SS Street Car
#1054796 - Yesterday at 01:49 PM Re: Upgrading CS 144 Alternator [Re: SSLance]  
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SSLance Offline
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SSLance  Offline
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Smithville, MO
So, I took a bunch of pictures of the internal guts of the CS 144 while I had it apart to show those that had never seen the inside of an alternator before (Like me)...but after replacing the voltage regulator and bridge rectifier and cobbling up an exciter wire...the old CS 144 still would not charge.
Remember, I'm currently working out of a storage unit I can barely walk around in with Barney on a trailer inside and I can't find or access a bunch of my shop tools. I think I did everything right, who knows why it won't charge.

Anyway, after spending almost $100 in repair parts and several hours of wasted time, I called a friend here that has an attic full of old GM parts in a panic last night and asked if he had any old alternators laying around that he knew were good. I wanted to try to figure out if my "exciter" wire wasn't operating or if it was something else causing the alternator to not charge before plunking any more extra cash down to fix this.

I pull the car over to my friend's and he produces a CS144 that he pulled out of a ex-cop\taxi Caprice that he parted out in 1999 and has had on the shelf ever since. It even had a 5 rib pulley on it instead of a V-Groove... Woot!! We put it on and right away it started charging. We then decided to pull my nice billet pulley and fan cover off the defective unit and put it on the cruddy old derelict unit and call it good.

I have a race this Sunday...my first event in Arizona... And now I have an alternator that charges once again. I still don't know what happened to my other one, at this point I don't care. And next time, I'll just run down to O'Reillys plunk down the$125 for a replacement for a 1990 Caprice Cop Car alternator and call it good. #Lessonlearned


Lance
1985 Monte Carlo SS Street Car

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