1100693 Alternator

[Robert T.]

Been looking into the 1100693 alternator and I noticed that some have a Delco Remy circular logo casting on the rear case, and some do not. I'm not talking about the big "DELCO - REMY" on the bottom of the alt, but rather a logo that is a couple of inches below the BAT stud. Actually it's about mid way between the Bat terminal and the big DELCO - REMY label.

Does that logo, or absence thereof, further identify the time frame or usage of the rear case. Do they get replaced occasionally during a rebuild?

Thanks in advaced for any inputs.

bob

[Ronald L.]

Re: 1100693 Alternator

My original April 66 dated unit has this as you have described.

[Joe L.]

Re: 1100693 Alternator

Been looking into the 1100693 alternator and I noticed that some have a Delco Remy circular logo casting on the rear case, and some do not. I'm not talking about the big "DELCO - REMY" on the bottom of the alt, but rather a logo that is a couple of inches below the BAT stud. Actually it's about mid way between the Bat terminal and the big DELCO - REMY label.

Does that logo, or absence thereof, further identify the time frame or usage of the rear case. Do they get replaced occasionally during a rebuild?

Thanks in advaced for any inputs.

bob

Bob------


During rebuild by commercial rebuilders it's a virtual impossibility that all of the parts of an alternator that was received as a core remain together after the alternator is rebuilt. Commercial rebuilders tear down alternators, clean and restore re-usable parts, and place the parts in bins for re-assembly. It's a process much like was used when the alternators were first assembled except the parts are used rather than new.

As far as the Delco-Remy logo, I have not noted any pattern to when it appears, although there may be one. I have noted that the logo may appear on the inside of the case half. When that occurs, there is no logo on the outside. Sometimes, there is no logo, at all.

These alternator case halves were a die casting. Some were manufactured by Central Foundry Division in Bedford, IN. These are often identified on the INSIDE by a "CFB" embossment. However, Delco-Remy was using these things by the millions and I don't know that Central Foundry Bedford cast them all. Different foundries might explain the presence or absence of the Delco-Remy logo. If any other foundries cast these parts, I doubt they were a GM foundry. GM only had 2 aluminum foundries at the time----Bedford, IN and Massena, NY. I doubt that Massena cast any of these.

[Michael M.]

Re: 1100693 Alternator

I just looked at my documentation photos for my 67 (#276) built in Sept. 66. It has the logo you mentioned. Maybe the first week of production for 67s?

[Robert T.]

Re: 1100693 Alternator

Thanks for the replys guys, and thanks for all the details Joe. You'd think I'd have better things to worry about, but I was curious about this "anomaly."


Thanks again,

bob

[Wayne M.]

Re: 1100693 Alternator

.....As far as the Delco-Remy logo, I have not noted any pattern to when it appears, although there may be one. I have noted that the logo may appear on the inside of the case half. When that occurs, there is no logo on the outside. Sometimes, there is no logo, at all.....

Here's a Delco logo that not too many have seen [see two thumbnails at bottom]. Evidently, Delco Canada (?) was casting these alternator case halves. This is a "693" dated 7B13.

The big pic immediately below is of 3 NOS cases (Anderson Indiana boxes). No Delco logo on inside, but there's a "Pbc" in an oval [about 1/4" long] which maybe relate to manufacturer.

Another front half of a '669', Dec '63, has letters 'CFD' next to a small multispoke wheel (3/16" dia), so that may mean something as well.

[Joe L.]

Re: 1100693 Alternator

Here's a Delco logo that not too many have seen [see two thumbnails at bottom]. Evidently, Delco Canada (?) was casting these alternator case halves. This is a "693" dated 7B13.

The big pic immediately below is of 3 NOS cases (Anderson Indiana boxes). No Delco logo on inside, but there's a "Pbc" in an oval [about 1/4" long] which maybe relate to manufacturer.

Another front half of a '669', Dec '63, has letters 'CFD' next to a small multispoke wheel (3/16" dia), so that may mean something as well.

Wayne------


I'm sure the "PBC" in an oval relates to the company that produced the casting. Most likely, the "C" at the end represents "Casting(s)", but I have no idea what the "PB" represents.

The "CFD" is interesting. Are you sure it's not "CFB"? "CFD" usually represented "Central Foundry Danville", but Danville was a cast iron foundry. It's unknown to me, but maybe they did do some aluminum there at some point. Seems very unlikely, but I suppose it's possible.

[Wayne M.]

Re: 1100693 Alternator

---- I'm sure the "PBC" in an oval relates to the company that produced the casting. Most likely, the "C" at the end represents "Casting(s)", but I have no idea what the "PB" represents.

The "CFD" is interesting. Are you sure it's not "CFB"? "CFD" usually represented "Central Foundry Danville", but Danville was a cast iron foundry. It's unknown to me, but maybe they did do some aluminum there at some point. Seems very unlikely, but I suppose it's possible.

Joe -- here's the pics of the interior casting symbols. I know for sure the CFD is on a 3M17 1100669 42 amp alternator. The other (3) in the NOS boxes could be cast 1969 or '70, due to what seems like calendar grids cast on the webs. But I thought these orange and white boxes were pretty well replaced by the white, red and blue by then.

Looking now at the blow-up of that 'Pbc', I'm not sure whether it's a "b" or whether the 'P' is an 'R'.

[John P.]

Re: 1100693 Alternator

Dad and I have never been able to find any pattern to when the Delco logo casting shows up. It appears across a wide spread of years. We also are familiar with the canadian castings. I dont believe them to be original for Corvette applications.

[Joe L.]

Re: 1100693 Alternator

Joe -- here's the pics of the interior casting symbols. I know for sure the CFD is on a 3M17 1100669 42 amp alternator. The other (3) in the NOS boxes could be cast 1969 or '70, due to what seems like calendar grids cast on the webs. But I thought these orange and white boxes were pretty well replaced by the white, red and blue by then.

Looking now at the blow-up of that 'Pbc', I'm not sure whether it's a "b" or whether the 'P' is an 'R'.

Wayne------


Yes, it's clearly "CFD". The "wagon wheel" symbol is further confirmation that the "CF" represents "Central Foundry". Thinking about, I expect the "D" probably represents "Division" rather than a specific foundry, so it represents "Central Foundry Division". I'll bet it was cast at Bedford, IN, though. Many that I've seen have "CFB" for "Central Foundry-Bedford"