Thread: GM small Alt ???

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I asked elsewhere ,But I have not gotten an aswer that fit the question other than "Maybe this bracket..." . I have bought four different bracket sets, No way around it, I have to use a small case GM CS130 or AD230 alt. if I want it low (and I do). The large case alts bang into my frame rail. before coming near bolting up (about an inch smaller Dia.would fit) I want parts yard sources. I know where and how much small case racing and new alt's are-OUCH I want USED until I KNOW it fits.

Now I need to know-
1. What GM car/truck has the small case GM CS or AD one I need - bolt holes strt across from each other,apparently there are a few versions w bolt holes at different angles.
2. How to wire it. A diagram would be nice
3. Diameter + how deep Front 2 Back are these small GM alternators?
I know I am a picky Bstrd, but I wants what I wants. Appearence but not showy is everything on this car.

Hey Dgas -

Delco CS130 is used on most early 90's GM with the 3.8L engine. Wrecking yards should have a ton of them.

Regards,
Glenn

I think you can clock those alt just like the early ones remove the front nut and fan and pulley and spacer remove 4 bolts that hold the front case and rear case together set set rear of the alt on a solid surface hold pressure on the armature so it stays in the rear bearing and slide the front case forward and turn it to the position you want and reassemble it no problem just dont let the armature come out of the rear bearing....ted

Are you familiar with Alan Grove Components? His website has some good infor on what you're asking about, see here: http://www.alangrovecomponents.com/Important_Info.htm
Then go to the Chev short pump link and look at page 2, the model 209L, click the dimensions button, it will show you the dimensions you're looking at. Given depth of field issue in the picture you put up, I can't tell for sure but it looks like you might still have issues with that crossmember.
One other alternative is an import alt, they're even smaller still. Here's a pic of one I've used that comes from a Kubota tractor (though these are real common so could be available in lots of places, it's just that the tractor uses a V belt pulley rather than serpentine style). It's a one wire internal reg type.

I'll give that some looksee. Thanks. Its hard to get a good angle of the motor , but your pic is pretty much what I have going in crossmember space. I have more of an side rail issue. here is the clearence I have from the crank bolt center line, out to side rail-11.25", down from that Cntrline to crossmember 7.5"

It's 12" to center on the pictured app.

The Kubota alternator will be your best bet here. The Alan Grove bracket & CS130 alt. will be as compact a package as you will find otherwise. These people are the best to work with and their products are first class. They can probably tell you over the phone if you have the room for CS130. Just keep in mind that you need some room for belt tension adjustment. The alt. will swing out and up to tighten belt with Alan Grove brkt. I looked at pic again. Man that is going to be a tight fit!

Here's a pic of the 209L bracket and CS130 in my '36 roadster, this has 12 1/8th center line.

I looked up the Kuboda Alt online. OUCH! 319 clams. For slightly more you can buy the Powermaster race alt including the brackets. After a couple calls to some dealer freinds I am going to just bite the bullet and get a high center mount. Although I hate those if I am going to be a cheap skate,which I am. Its the only setup that will fit this situation according to one experianced rod shop owner (of course he is a dealer for Alan Grove). Considering I have a brand new int reg Gm Alt. now its more cost effective to buy the ugly high mount. A copy of which I found on Ebay for $60. Oh well, maybe I can doctor it old school w lightening holes in the wide area's. At least I have the room up top.

Some judicious shopping would lower that amount substantially, I'm in mine for less than half the number you found, all new.

If that high mount you've pictured is an example of what you think you're stuck with take a look at this one: http://cgi.ebay.com/ebaymotors/ws/eB...3AIT&viewitem=

MUCH cleaner!

Neat,Unfortunately its a small block setup, I have a BBC alt bracket search saved in "My Ebay". Maybe It will come up w more choices. Given I am in MN and cold /snow is a certainty for the next 3-4 months Now that I have the engines initial brake in done w/o the front clip on it, heheh. I am in no hurry

Don't know your fab skills, but when I see something like that I see it as inspiration to scale to my needs. I buy when it's cost effective, build when it's more advantageous to do so or feel the need to just do because.

the alt off a geo tracker or prizm i think they all used the denso s alts is what i use 25.00 at the bone yard very small 50 amps seams to work fine on the 50 chevy and a resistor from radio shack that was less then $6.00 makes it a one wire alt i am running two spals fans a holley blue pump and a msd 6a box it keeps up . you may want to check out CVproducts.com they have some nice lay outs of drives you could pick up some ideals if you go this way i can get the color code off the resistor just pm me

heh heh ,skills I have,but no fab equipment to do it. I no longer have decent welding equipment, plasma cutter or shears (sold it all w the shop equip. when I got the cancer) I do have a minimal 110 wirefeed w gas, good for sheet metal only + acetylene torches,Neither is any good for welding a stress area) , Die and 4"/10" disc grinders etc. So either I take the parts/cardboard patterns to someone who does ,often more expensive at current shop rates or I buy used/ready built. More often than not off/Ebay brands or used.

I'll have to look into the Geo alt. I too need very little charging power w only a cd/radio and heater as add ons.