[RWebb]

Obviously, I cannot change the pinion, but I will try to get it to work by brushing off the worst rust and then use a rust reducer, followed by more cleaning & some lubrication.

This unit was sold to me by a guy who has several items for sale in the parts section - he assured me by Email and by telephone that the tranny was "excellent" and "perfect." The price was $1,000 + $200 shipping. I just wish he'd been honest about the condition.

Assuming it it REALLY is a '75, I am thinking of doing the following things:

[1] replace the guide tube - if lucky, I can use the one from my 1973.5 transmission that I still have.
I've looked in the PET (v.6 - the program not the pdf files) and it says the Guide Tube different on '73, but same on '74 & gives a p/n of 915-116-087-03 (The '73 vs. '74 difference might be critical since Porsche might possibly have started using '74 parts on the late model (CIS breathing) '73.5 cars).


[2] Maybe replace the drive flanges (where the CV joints hook up). Again, if lucky, I may be able to use the ones from my '73.5 trans.

3 differnt p/n's (types) of drive flanges are shown by PET pgm6 for '75 (+ another type for LSD) - for '73 the p/n starts with 911-xxx
So, that doesn't look good for swapping the things -- but you never know....


[3] Maybe replace the clutch fork with the one on the '73.5 trans.
Some research shows the p/n as 915-116-712-01 -- clutch fork, 1975 - Stoddards's says same fork 1972-86, but Pelican has 2 different p/n's (differ byt last 3 extra digits "M260" & says one w/o M260 works only for 1972-73; --- PET pgm6 says guide tube different on '73, but same on '74

I posted the above in detail in case anybody else ever has the issue - it took several hours of research to see what PET, Pelican & Stoddard's all have to say...

If ANYBODY knows for sure whether any of the above can be swapped from the '73.5 trans tot he '75 one, please post! Each item is $150 to $200, so this could get expensive very quickly.