Unmarked engine case
 

I was looking over a mag case that I had lying around from purchase a few years ago and noticed the case has no engine type number or serial number on it....I looked at the location where the 914-6 numbers are located and blank. This is an 3R case. I assume this is a replacement case sold by the factory. I have a 69E that came without the motor. Can I get this case stamped so I can get "create" matching number/type engine for my car?

Yeah. However, I believe its illegal to do that. Some car theives do have really good stamps. Some machine shops have the correct tools to do it, but to look factory would take some set up time. Then, in the end, is it really a matching number deal or is it a fraud? In my mind there is nothing wrong with a factory replacement case. Even that is an assumption, but your integrity remains intact.

Diverdan

I'm not saying it is right or wrong it's your choice but the 356 guys do it all the time.

I wouldn't touch that engine with someone else's 10-foot pole. Probably has a less-than-savory history somewhere in its past.

I could be wrong about this, but AFAIK even factory replacement cases from the factory should have #'s stamped on them.

I would have to disagree as factory replacement cases are sold new, over the counter, by Porsche unstamped. Oh, and they will cost you!

replacement case
 

Onboost is correct. When you buy a replacement case, there are no serial numbers. If your case were replaced under warranty, the dealer would (should) stamp your original case number on the replacement and the original is (should) be destroyed or returned to the factory (where it is destroyed).

Racing cases often had no serial numbers.

So much for the value of "matching numbers"?

Your only correct statement. Factory replacement cases are unstamped for type or SN, and bear no stigma.

Thanks for your input....I'll leave the case as is. Its obvious that the case has not been tampered with. I had a feeling that stamping the case was not kosher but I wnated to check here.

As a postscript..I did get very lucky and found a complete 69E motor/trans with production numbers very close to the chassis so I'm very happy.

Thanks again.

Thanks for the info - anyone have first-hand experience with this? "Trust but verify" you know. . .

Yep - - me and my mechanic....

And me..

Check with some of the racer boys... many of them have bought new cases from Porsche and they come blank on the number boss..

P-

Replacement cases with no numbers and types were the rule back in the day. Nice find.

And me...

I also have a 1970 motor with no serial number on the case. The rebuild records indicate it was done by a dealer, however, amongst the 50 pages of service work the PO had done, there isnt a clear indication of a replacement case. Looks like a tensioner failure from the cryptic parts list.

Based on my personal experience I would say that there are no universals when it comes to this old stuff. I have held in my hands a couple of NOS factory replacement cases from Vasek's collection. They were both 901/16's that would have been intended for use in a '69 911T.

I have also seen an NOS 1972 911/73 911s 2.5l motorsports case from Dr. Bill Jackson's collection.

So there's two instances of street cases and one instance of a race case where replacement cases were stamped. They also had serial numbers on them, but it was a couple years ago and don't remember anything other than the fact that the 911/73 started 64xxxxx.

My '73 has no number stamped either, but has 7R cases.

HOLY MOLY. If that thing has a '73 casting date, you own the holy grail: an RS correct replacement case! Last one I saw sold for $3K.

Hmmm, I will have to double check I am almost positive it has 7R at the end of the part number. I am going to the garage right now and checking. Or it will drive me nuts.

Ok just ran out and got all dirty and the number is 901 101 102 7R, just above oil return tubes and number 901 105 111 OR just above exhaust valve cover?

I have an original 911/73 2.5 ST Engine case, date stamped
Engine number; *6622037*

Here's a link look to my site;

http://www.porschespecialist.nl/shop_detail.php?type=onderdelen&a_ID=38