1100884 spoke question

[Terry M.]

Re: 1100884 spoke question

From a C2 perspective, is this the 6-spoke drive end you guys are referring to ? As for the C.E (commutator end, or slip ring end), can you describe (a
picture would be better) what the difference is from the C2 era ?

Yes Wayne that is the six thin spokes us C3 guys with 1100884 have. That looks like it might be an LT1 motor. I can see the Holley accelerator pump.

[Edward B.]

Re: 1100884 spoke question

Joe, yes, it's an 884 (I have TI). Took me a few years to find one that was reasonably priced, but I finally stumbled on one on Craigslist for $200 plus shipping! It had a small dent on the top where something had fallen on it and needed a complete rebuild, but there's a shop just a few miles from me and they did a really nice job for $75.00. A little JB Weld and some silver paint and it looks as good as new! Yes, it was built two months after my car, but beggars can't be choosers, and besides, I don't have my car judged so I'm happy.

Ed

[Wayne M.]

Re: 1100884 spoke question

Yes Wayne that is the six thin spokes us C3 guys with 1100884 have. That looks like it might be an LT1 motor. I can see the Holley accelerator pump.

Terry -- now you've got me wondering what's under the rebuilder's tag (nothing, maybe ?). This is on my '65 L76 air car.

Anyone have suggestions on how to remove these small pins attaching the tag without damaging the case underneath.

Joe -- sure looks like the 6-spoke drive end is adaptable to the 10 DN rear case; been running like this for 30+ years. My Jan 1970 P&A30B lists 1100842 as a 42 amp rebuilt generator (exchange req'd) for '62 thru '68 Corvette. My July 1969 revision of P&A30 repeats that and adds "69 All" (meaning other than Corvette, I believe).

rebuilt 842 w-6 spokes.jpgrebuilt 842_42 amp.jpg

[Wayne M.]

Re: 1100884 spoke question

Well I got the rebuilder tag off, and nothing was underneath, so I guess this means that they used a 6-spoke NOS front case. So I'm left with two rivet holes and a stamping "J
3052" on the passenger upper side corner. Anybody know what that could mean ? Obviously, this front/rear case mis-match is an affront to my C2 sensiblities, so off it comes .

6-spoke, no part stamp.jpg6-spoke, 2 rivet holes.jpg

[Joe L.]

Re: 1100884 spoke question

Well I got the rebuilder tag off, and nothing was underneath, so I guess this means that they used a 6-spoke NOS front case. So I'm left with two rivet holes and a stamping "J
3052" on the passenger upper side corner. Anybody know what that could mean ? Obviously, this front/rear case mis-match is an affront to my C2 sensiblities, so off it comes .

[ATTACH=CONFIG]59089[/ATTACH][ATTACH=CONFIG]59090[/ATTACH]

Wayne------


I've never seen a stamping like that on an NOS drive end case. I have many (but, unfortunately, not of the 6 or 5 spoke configuration). You've got what could be a very valuable case half for a 1969-70 guy. This one is a "wild card"; it could be stamped with any number or date.

This one could have started life as a SERVICE case half. However, it would have to have been from a LONG time ago. I don't think this case half configuration was manufactured after 1970.

[Edward B.]

Re: 1100884 spoke question

Both the 5 spoke and 6 spoke front drive end cases are available aftermarket. When I had my alternator rebuilt, the shop that did it had a catalog of available parts including cases (both front and back), and the 6 spoke case was around $20 new. HERE'S one on ebay as a matter of fact.

Ed

[Joe L.]

Re: 1100884 spoke question

Both the 5 spoke and 6 spoke front drive end cases are available aftermarket. When I had my alternator rebuilt, the shop that did it had a catalog of available parts including cases (both front and back), and the 6 spoke case was around $20 new. HERE'S one on ebay as a matter of fact.

Ed

Ed-------


I had heard somewhere that reproductions were available but I'd never confirmed that or seen one. This one looks pretty good. One slight difference, though, is likely the lack of the Delco-Remy logo usually seen on originals, sometimes inside, sometimes outside the case half. That nuance would not be a big deal to me but it might be for some folks.

I wonder if the rear case halves have the prominent Delco-Remy script? To do that, they would have to be GM-licensed.

[Edward B.]

Re: 1100884 spoke question

Joe, the special 7 cooling fin rear case isn't available. (And trust me, I searched high and low!!) I was actually surprised the 6 spoke case was available! The guy that rebuilt my alternator has been doing this for almost 50 years and this was the first time he'd ever seen the cooling fins! We search every book he had (and he literally had dozens from the late 60's on up), and while we found the 5 and 6 spoke front case, we never found the 7 cooling fin rear case. He said we could make millions if we reproduced them!! (He was joking of course.)

Ed

[Joe L.]

Re: 1100884 spoke question

From a C2 perspective, is this the 6-spoke drive end you guys are referring to ? As for the C.E (commutator end, or slip ring end), can you describe (a
picture would be better) what the difference is from the C2 era ?

Wayne------


Pictured below is an NOS GM #1959917. This is the drive end case half used for all 1962-68 Corvettes with DN series alternators.

Also, I was incorrect about one thing I said in an earlier response. I said that GM never cataloged the SI series drive end case for a DN series applications. I was incorrect. While they never used the SI series drive end case on a PRODUCTION alternator, the 1959917 was replaced for SERVICE by the GM #800135 in March, 1973. The 800135 is the drive end case half that apparently had 3 different configurations-----6 spoke open, 5 spoke open, and 5 short spoke closed. The 5 short spoke closed configuration had been adopted well prior to the time the 800135 became the SERVICE case for DN series alternators.

DSCN3094.jpgDSCN3095.jpg


On the rear of the case half, note the casting number of 1959918. Also note the "wagon wheel" followed by "CFD". This denotes Central Foundry Division. At that time (and even to this day, I believe) the only Central Foundry Division foundry that did/does aluminum die castings was the Bedford, IN foundry. So, that's where this, particular, piece was cast.

[Wayne M.]

Re: 1100884 spoke question

Joe -- I also have three NIB of the earlier Delco 3-spokes, ready for stamping (I didn't just say that ).

Bad news on the 6-spoke (kinda). I just took mine apart, and here's what I found (no marks outside, but inside, check the pic). No Delco Remy insignia, but a stylized "lpm", a casting sundial, and the characters IA-2003 (or is it 1A ?). I googled "lpf die casting" and turns out they are an Italian company that supplies low pressure and gravity casting machines to many industries and countries. I wonder if the $20 one on eBay that Ed has mentioned has similar internal markings ? I don't see how the "2003" can refer to a date, as I know when the previous alternator was changed for this jobber unit in the early '80s (due to an 'en route' emergency), and the car has never been out of my sight since.

[Edward B.]

Re: 1100884 spoke question

I don't remember the part number and there wasn't a picture showing the inside in the book my rebuilder had, but I've asked the seller on ebay if he can take a picture of the inside for us. Stay tuned...

Ed

[Edward B.]

Re: 1100884 spoke question

Ok, the ebay seller replied:

hi ed, there are nomarkings inside the case, it is aftermarket. thanks

So maybe there are two or more companies supplying these cases?

Ed

[Joe L.]

Re: 1100884 spoke question

Ok, the ebay seller replied:



So maybe there are two or more companies supplying these cases?

Ed
[/FONT][/COLOR]

Ed-------



I doubt the manufacturer of the example Wayne showed us is still making these. I expect that any manufactured today originate from China.

[Edward B.]

Re: 1100884 spoke question

I expect that any manufactured today originate from China.

Good point Joe.

Ed

[Joe L.]

Re: 1100884 spoke question

Good point Joe.

Ed

Ed------


Yes, China is becoming THE source for castings. Sometimes, the parts will be machined here in the USA but the casting, itself, came from China.