Manual for 914-6, want to change shifter bushings Options

[shepmon]

Hi all, Can someone suggest a manual for the mechanically challenged. I'm trying to improve my shifting on a factory 914-6. I got a set of bushings but don't know where they are on the car and how to change them. Also thinking about a RennShift but wanted to try the bushings first. Any thoughts would be appreciated. Thanks, shep

[Porsche Rescue]

The linkage and bushings are different on 6 vs 4 tailshifter. And you're in luck, the 6 is simpler.
First bushing will be the cylindrical shaped cup at the bottom of the shift lever. Remove the 5 bolts and lift the lever up. The bushing will probably be in several pieces with some remaining in the cup of the shift rod. You will note that the two 10mm bolts hold a metal ring which should have a round plastic bushing inside. Likely it is in pieces on the floor of the tunnel. Once you remove the set screw and pull the cup off the shift rod you can slide the ring forward and off. Put in a new bushing and reinstall. Lube the cup bushing and use a soft hammer to pop it on the end of the shift rod.
If you are going to replace the firewall bushing you will need to separate the front and rear portions of the rod at the rear of the tunnel, under the center cushion. It is the hardest to replace. I find it helpful to boil it in water in the microwave and then push it into the firewall from the rear by prying (and swearing) with a screwdriver.
There is another round bushing in a bracket on the tranny (same bushing as used in the front guide ring). You must unbolt the bracket from the tranny and remove the rear shift rod with bracket to the bench. You then drive out a roll pin to remove the selector piece at the back end of the rod. Then you can slide the bracket off and install a new bushing. Note orientation before removing the pin because the selector must go back in the same position. If it is 180 degrees off it won't line up.
There is also a plastic piece in the joint at the front of the rear rod which can wear. I have never replaced one so can't offer any help there.
Then you need to adjust the linkage after reassembly. Post again when you get there, or sooner if more help is needed.