shift fork specs 915
 

I want to know when it's time to replace the shift forks in my 915 gearbox (86 3.2).
Anyone can lead me to the specs (I assume the thickness is important ?)

How about "Check play between selector fork and operating sleeve of 1st through 5th gears. Distance "a" = max. 0.5 mm." That is from a loose page copied from a Porsche publication with 911 Carrera Manual Transmission / Gears and Shafts 35 heading I have stored in my Assembly Group 3 volume of the manual I have (pre-3.2, but the 915 is the same).

So this accounts for wear on the operating sleeve as well as the (much softer?) fork.