915 shift linkage

[Gunscrossed]

Today I had a go at replacing the bushes and rear linkage on my SC.
As the car is in storage about an hour away from me I bought a second hand 915 rear linkage and some Super Pro polybushes and installed them so all I had to do was swap over when I got to the car.
When I removed the one from the car it was slightly different from the one I bought.
The replacement that I re-bushed had a date code on it (79) the one fitted has nothing at all.
Anyway I swapped them over but the one I’ve removed is a lot stiffer than the one I’ve installed and I’m just wondering what is better?
Any help appreciated

IMG_8254.jpeg

[jury]

No expert on this, but I have replaced a few linkages with Polyurethane bushings. I wonder if a later linkage has a slightly beefier casting ? It looks like they are interchangeable....but don't quote me on that.

Personally I would go with the option that feels the best, assuming it shifts into all gears.....As you know the linkage doesn't take the most direct route, so anything that makes it feel better would be a bonus.


Chris

[Gunscrossed]

Thanks Chris, the shift has improved but I think that was more to do with the adjustment and I don’t think there was anything wrong with the linkage (certainly didn’t have any play)

[911hillclimber]

In all my 34 years with my 73T/915 I have found little play in the rear bushes, but quite a wear rate in the 2 bushes under the shifter 'tower' itself.

The factory bushes are moulded with the holes in the slight shape of a 'double D'.
This 'sloted' hole allows a lot of fore/aft or 1st to 2nd/ 3rd to 4th etc movement.
This allows for a simpler adjustment and allows the shift rod in the box to reach it's detent position for each gear on selection, but also any misalignment of the whole of the shift rod path as Jury says.

It is paramount the gear can get fully detented in position or it will jump out of gear...

If the new bushes are round then the adjustment can need a more exacting approach to get to the sweet spot.

Once found the shift is great, but it is not easy.

[Gunscrossed]

Thank you, I think I may still need to tweak it slightly.

[Bootsy]

I replaced my bushes recently - again with Super Pro.

Adjustment is key. you can go from virtually no gears to all of them but stiff to smooth with the slightest adjustment -

There's some great stuff on You Tube about how to adjust - I'll try and dig out the one I used.

[Gunscrossed]

Thanks again

[MikeS911]

Hi Bootsy
Did you manage to find the Utube post you usedfor the adjustment,
MikeS

[Bootsy]

Hi - from memory it was this one https://www.youtube.com/watch?v=2xwpwKu2jb8

and although this is about fitting a Stormski precision coupler I did watch this one a couple of times too https://www.youtube.com/watch?v=MZIvrS-pZQw