C2-C3 Restamped Alternators

[Wayne M.]

Anybody see these and care to comment ?

Seller calls them remanufactured, offered by someone called "Goat Hill". Original Delco front (DE) case roll stamped with correct fonts. (Does he shave off the original stampings or must he start with virgin case ? And if he is the one who stamps them, then why are only specific dates available ?)

http://cgi.ebay.com/ebaymotors/1965-68-Chevrolet-Corvette-Alternator-Drive-End-Housing_W0QQitemZ290101731870QQihZ019QQcategoryZ6755QQrdZ1QQcmdZViewItem

And just who the h*** is "The Colonel" at Carlisle who has given his blessing ?

[Harmon C.]

Re: C2-C3 Restamped Alternators

The people on this board have said enough in the past about a vendor with the same name so cash and carry at Carlisle and judge the part yourself is the only way I would go.
Lyle

[Dick W.]

Re: C2-C3 Restamped Alternators

When the "Colonel" gets wind of this add, GH will wish he never learned to spell Colonel.

[Lyndon S.]

Re: C2-C3 Restamped Alternators

his he refering to JP?

[Mike M.]

Re: C2-C3 Restamped Alternators

colonel will put goat hill on boot hill. mike

[Joe L.]

Re: C2-C3 Restamped Alternators

Wayne-----

I have been TOLD that someone is reproducing these alternator drive end case halves. However, I've never confirmed that or otherwise verified that. If not, there are two possibilities for a source for the case halves. First, of course, is that they are NOS SERVICE case halves. These have no numbers stamped upon them. I have seen these sell on eBay in the $100+ range.

The other possibility is that Paul has found a way to indiscernably "obliterate" the original numbers and stamp his own.

I expect that the reason that he only has certain dates is that's what he's already made up to "cover the range". He could likely make others, to order.

It does look like he's found the means to "roll stamp" the cases halves. However, I would not think that this stamping is going to fool too many. There are certain "facets" of typical stampings as originally applied that are hard to duplicate. Really, though, I feel silly even getting into this thing about "nuances" of original stampings, particularly as they apply to alternator case halves. This fascination with "original numbers" and "original dates" never ceases to amuse and confound me.

[Terry F.]

Re: C2-C3 Restamped Alternators

They look took clean to me. Original castings were rougher. Possibly heats and hammers the letters out then reskins them in a tumbler???? Hard to tell. You could probably do it a number of ways if you took your time. It seems to get crazyer all the time. I love original stuff but it is hard to tell fake from original so what's the point anymore. Joe, do you know of anyone that sells a .06 thick chromoly push rod that is single piece for big block? Thanks, Terry

[Wayne M.]

NOS -- smooth as a baby's b**

and that's one of the reasons why I started the thread. Originals were quite smooth, yet Goat Hill's seem textured, as through they've been through some surface treatment.

None of these are for sale, unless someone has an original 1100697 with date range that doesn't clash with needs of others that frequent this board.

[Loren L.]

Mike, should we start a bail bond fund??? *NM*

[Mark #28455]

roll stamping is easy for him

Remember, he also sells restamped starters - so he already has access to roll stamping.

There are several ways to obliterate the original stamping and the tip off is that the finish as noted above is too rough. The originals used a permanent mold, so were smoother. In addition, there reportedly is a vendor who is selling repro cases to the Camaro crowd that are blank.

Mark

[David D.]

Time for NCRS Approved Bore Scope? *NM*

[Joe L.]

Re: NOS -- smooth as a baby's b**

Wayne-----

Most of the 10DN-series alternator case halves that I've seen, including many that I have in the collection, appear to be manufactured using a die casting process. This process produces a very smooth surface. However, I have seen some that appear to be a permanent mold casting which makes for a somewhat more textured surface finish. For 10DN-series alternators, though and for the most part, both the drive end and split ring end case halves appear to have been die castings and with very smooth and "matching" surface finishes. Whatever finishing processes were used, the vast majority of the time, it produced a very smooth surface.

Things changed somewhat for the 10SI series alternators, though. For one thing, there were at least 4 different designs for the drive end case and at least 4 different designs for the split ring end case. Most of the drive end case halves appear to be die castings with very smooth surfaces. However, some that I have seen, including several NOS case halves that I have, have a bit rougher surface finish. These may either have been cast using a permanent mold process or using a different casting finishing process. Many different casting finishing processes are utilized in both die and permanent mold casting and these can significantly affect surface finish.

The split ring case half for 10SI series alternators is another matter. I believe that a different finishing process for these case halves was used. I have yet to see one with the very smooth surface finish of most 10DN-series split ring case halves. Also, unlike most 10DN-series alternators, the 10SI-series alternators usually have VERY noticeable differences in surface finish between the drive end and split ring case halves. In fact, most split ring case halves for 10SI-series alternators appear to have a BEAD BLASTED surface finish. I have many NOS 10SI-series split ring end case halves and several NOS 10SI-series alternators. ALL have split ring cases that appear to be BEAD BLASTED. Curiously, bead blasting is one of several finishing processes commonly used for both die and permanent mold castings.

One thing to keep in mind: when these alternators, both 10DN and 10SI were being manufactured for PRODUCTION, Delco-Remy was turning these things out by the MILLIONS. I'm quite sure that different foundries were used for casting of the case halves. GM specifications may have allowed for different casting processes (i.e. die casting and permanent mold casting) and may have allowed for different surface finishing after casting (i.e. bead blasting, tumbling, etc.). The only foundry within the GM system I know of that had capabilities for producing these castings at the time was the GM aluminum foundry at Bedford, IN. In fact, Bedford did produce many of these alternator castings. However, by no means did they produce them all. So, I really think that there was quite a bit of variation in the "subtleties" of these alternator case finishes.

[Dick W.]

Re: roll stamping is easy for him

And if you know what to look for, you can spot his restamped starters 5' away.