Transmission Shift Fork Jig DImensions, Help required - Porsche 901 shift fork alignment jig (P260) dimensions Options

[guy.huxley]

I was wondering if someone would be able to help me out.
I am making my own jig for aligning the shift forks on the 914 transmission. If anyone has an orginial jig (P260) and would be kind enough to measure it for me, I would be very grateful.
I have one source of information, (see attached image - sizes in mm) however I would like to check the accuracy/ improve the precision before I get something machined to the wrong size!

The one thing I would also like to find out is the thickness of the original jig, if anyone has this information they could share too.

Many thanks,
Guy

[Red76]

If you are lucky enough to have a core transmission you can pull the intermediate plate out and clean it up. You need to pull out the old bearings.

If you want to make one yourself the intermediate plate serves as a great template
The o.d of the pinion shaft bearing is 64 mm
The o.d. Of the input shaft bearing is 46.12 mm
Each shift fork rod (3) is 13.87 mm dia.
Thats their exact measurements. You might need to leave a few thousandths of clearance to make it fit well.
Ive made these out of wood and also out of uhmw plastic.
iMHO if you only do these occasionally it doesn’t make sense to blow $80.