72and86

The bearings sound like they're going in my 1965s alternator ... I have an rebuilt alternator in a box somewhere from my C3 1972 350ci, are they compatible?

Plasticman

My 70 Vette used a 10SI alternator, which has the integral regulator. It would not be compatible with your 65 version, which uses an external regulator (unless you want to do some rewiring).

Note that rebuilding the old alternators is not difficult, and bearings, brushes, etc. should be available at NAPA.

Plasticman

72and86

Thanks

kingwoodvette

Most of the Corvette parts suppliers offer a simple connector to by-pass the voltage regulator and allow the use of these internal regulated alts. A pretty easy way to up your output to 70+ amps. As I remember, connector is less than $20. Of course, you wouldn't have the enjoyment of rebuilding the old one!

72and86

My motor is a NOM. I just looked at the alt, it has 2 separate connectors and one wire going to it. I am told by the PO the engine is a 1972(?) 350.

AZDoug

An external volt regulator alt has connector spades that looks like this: I I

An internal reg alt looks like this: _ _

Doug

72and86

Yes I have the II connector, a boot connector and wire screwed to it. What name is given to this type of alternator?

JohnZ

That's "externally regulated" (requires a separate voltage regulator); used from '53-'68.

72and86

I bought a Delco Remy 10 DN Alternator Repair Kit on ePay for like $25 shipped. I guess I'll give it a shot repairing it...

Plasticman

John,

Think you mean "used from 63"..........

Plasticman

72and86

Ok the rebuild kit came in the mail, its 2 small bags of parts w/o any instructions.
Does anybody know of a tutorial to rebuild this external regulator alt?

JohnZ

Good catch - yup, there weren't many internally-regulated generators....

72and86

Alright got the kit and trying to get thru this. (my first time) How do I put back in the newDIODES without breaking them. I was going to try to punch them in with a socket and hammer but the connector is in the way and the socket size I need would be too small to thread the connector up and out of the way?
Any ideas?
No instructions anywhere to rebuild this? I got it all apart on the kitchen table .

rene-paul

If it was charging ok and just bearing noise, I would not change the diodes. Check the rotational field armature where the brushes contact and polish with crocus cloth. The bearings can be tapped or pressed out with a small socket and a c-clamp. A good cleaning new bearings and a brush pack and you should be good to go. Do not forget to clock the halves properly. Let us know...
Brgds;
Rene

72and86

Doah! Forgot to clock the halves, Great theres only four ways it can go.

72and86

Well I finally finished rebuilding it and I thought it came out pretty good, since I had nothing to go by as a guide.
Once installed it read on the guage "+20" then in a minute or 2 it went down to about "+7".
I hope thats normal....