Gear linkage bush

[colin944]

http://www.ebay.co.uk/itm/PORSCHE-944-NYLON-GEARBOX-LINKAGE-SUPPORT-BUSH-BUSHING-/150735922067?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3APorsche%7CModel%3A944%7CCars+Type%3A3.0+S2&hash=item23188fa393
Anybody seen this or even used one.Good price to fix the wiggly gear stick problem.

 

[Mike_Pollock]

Interesting, someone should buy one and let us all know!

There are plastic / metal ball joints on the mounting arm that also wear, so not sue if that's a complete solution but it is a start as the whole assembly is over 100 from Porsche.

 

[George Elliott]

Pity they used nylon, its hygroscopic water absorbing properties will not agree with the polished spindles it runs on, and nylon can disintegrate. (see our heater clip behind the dash)
Hopefully the exhaust will keep it dry
I made one from Delrin / Polyethylene and its working great, but its not a simple part when you study it carefully.
George

 

[Hairyarse]

I thought that was the benefit of using nylon for bushings so it's self lubricating?

 

[colin944]

Bump

 

[zcacogp]

ORIGINAL: colin944

Bump

Bump back atcha.

Original item has sold from eBay and I can't find any more either. Which part was it?


Oli.

 

[colin944]

IT was the bushing at the gearbox end. The one that holds the two rods at right angles.

 

[geoffbateman]

When I had mine out I got some DX bushes of the correct diameter for the rods/pins and carefully drilled out the plastic cross piece (using a bench drill) to insert them. The DX bushes have a thin wall, which is necessary because of there not being much material to drill and also the centres of the cross drilled holes are quite close together. One year on it's still working OK and the gear lever still has much less play than it did before the mod.

 

[zcacogp]

Interesting, what are DX bushes?

 

[Frenchy]

JMG has posted a link to some very good articles on their website regards this, good reading.

 

[Eldavo]

I think that's why we're all asking suddenly!

 

[zcacogp]

Interesting, thanks for mentioning that Frenchy, I didn't even know that JMG did such articles.

I've now read the ones on the gearshift mechanism and concur with it entirely. He highlights the three main areas of wear - the front gearlever, the rear cross-brace and the linkage bush. The front gearlever is easy to re-engineer with even a modest home workshop for no more than the cost of a couple of inches of 10mm stainless steel bar. The modified cross-brace JMG have made is exactly what I have in mind to make, and I am sure it could be done very cheaply and easily with some stainless steel M6 rose joints - I don't expect this will cost more than £10 or so, and that article will guide me very well when I do the work on my own car.

The difficult bit is clearly the gear linkage bush and the two shafts that run within it. I wonder how hard it would be to replace the pin on the cast iron part that is mounted on the 'box itself, in much the same way as replacing the pin on the gearlever? It may well be just as easy. And, if you could find some bushes of the right size, you could re-bush the gear linkage bush at the same time. Geoff - is this what you refer to when you talk about DX bushes?

Hmmm. This has got me thinking. Does anyone have a spare old linkage they could send me to study? Mine is attached to my car, and not available for careful inspection ....


Oli.

 

[Duffman502]

I bought one similar to the op and tightened everything up nicely it was an interim replacement before i fit my schenll linkage but it shifts so nicely now i havent bothered to fit the schnell linkage.
I think you have to buy the whole assembly from porsche iirc so its much cheaper but is a ball ache to fit without a ramp.