Transmission Numbers

[LongRanger]

Had my vehicle up in the air, a few days ago, to look at the transmission numbers.

According to The Porsche 911Red Book, 911/01 refers to a 5-speed transmission.

What does the |10 stamped after signify?

Also found were these numbers --- 382 --- painted inside the right-hand trailing arm. Has anyone seen this before, or know what they signify?

Rick Kreiskott

[davep]

That is a 911 transmission from 1970, not a 901 but similar.
The 10 means it had an LSD !!!

[LongRanger]

That is a 911 transmission from 1970, not a 901 but similar.
The 10 means it had an LSD !!!

Thanks, Dave --- and I fixed the number.

The Red Book shows two LSDs --- 40% and 80% lock-up. I'm pretty sure this one's 40% . . . do you know the designations?

Rick Kreiskott

[peekaboo]

I think the other would be '12' . I'm curious if there was an '11' ? (60 percent ?)


(From Matt Monson - he's refering to 1973 915's ...and I believe it is applicable to later also. Possibly earlier too) :

"Here's something from my specific area of expertise.
The 12 is the indication that it was fitted with a ZF LSD from the factory. "


Apparently , these LSD stamping designations are thought to have only been done on production car tranaxles. I would be interested in knowing if this procedure was done on factory built 901 transaxles ?

[LongRanger]

. . . Apparently, these LSD stamping designations are thought to have only been done on production car tranaxles. I would be interested in knowing if this procedure was done on factory built 901 transaxles? . . .

The trans in the photos in this thread is installed in a '70 Euro car, VIN = 9110301059. The LSD is listed on the CoA . . . but the transmission number is 'not recorded.'

Does anyone have a CoA or Kardex that lists both a transmission number and an LSD?

Rick Kreiskott

[davep]

I believe that the code 10 / 11 / 12 was more of a model year thing.
As in 12 for the early 915 with LSD; 11 may have been 914. I'd have to check my datafiles, but haven't loaded the programs on this new computer yet.

[ajwans]

Does anyone have a CoA or Kardex that lists both a transmission number and an LSD?

Yes, my Kardex shows the transmission number and shows LSD in the options list, it says "sperrdifferential". This was 1967 so they may have changed
the recording procedure.

andy

[LongRanger]

Hey, Andy . . .

We've all seen and heard of some of the goofiness that turns-up on CoAs. The Kardex really is the only way to fly . . .

So --- how can I get a copy of the Kardex for my vehicle?

Rick Kreiskott

[ajwans]

So --- how can I get a copy of the Kardex for my vehicle?

Rick Kreiskott

I won't say how I got mine, they are hard to obtain because the discs which contain them have not been scrubbed
to remove details such as the original owner when a car was special ordered, therefore there are privacy implications
which is why you can't simply be sent a copy of your Kardex.

Certainly the Porsche owned dealers have the discs. Certain individuals also have access to the discs although I'm not
sure how. Some folks on here have alluded to "a source in the alps" who they can obtain information which could only
be via access to the Kardex, it's all very mysterious.

There has been a similar thread recently:

http://www.early911sregistry.org/for...l=1#post503596

If you email these guys with your chassis, engine and transmission they can confirm they match and tell you your
options. But please guys don't everyone email them at once, they had to stop accepting queries at one point because
of the deluge from EarlyS registry owners.

andy

[peekaboo]

I was sorting thru some photo's , and I noted I had a photo of a 915 trans '12' LSD stamping.

So I though i'd come back here and post it ( I believe from a 1980 MY 911SC) :