Johnny G Pipe

GregBBRD

Personally, I would update everything. The pivot ball, the arm, the T/O bearing, the collar.

The failure rate on the early stuff was extremely high, so most people have been updating this stuff since 1980.

Hymodyne

I found these:
https://www.partsgeek.com/catalog/19...e_bearing.html

A site member offers a rebuild service.

James

hwyengr

Good news/bad news, the entire release bearing assembly is available from Porsche again. It's just expensive. http://www.classicshop.porsche.com/p...811608525.html

Mark Anderson

or buy it from the manufacturehttp://shop.928intl.com/Throw-Out-Be...28-116-085-23/

Wisconsin Joe

If the bearing has any "notchiness" to it, replace it.
As you realize, it's spinning all the time. It's under different loads when the clutch is released or engaged, but it's always spinning.

I did mine (85) a couple years ago. Roger had the bearing itself, and I pressed the old one out and then back in (it was smooth as butter, and apparently was fairly new). It took longer to set up the press than it did to do the actual "pressing" part.

The pilot bearing is also a good thing to replace when the clutch is out. Good news is that the pilot bearing is less than $10 (or it was a couple years ago).

GregBBRD

Are you saying that you are making the new throw out bearings that Porsche is selling?

Mark Anderson

No, Its just that Parts Geek seem to be reselling our sleeve, bearing, and washer.

Johnny G Pipe

Thanks Mark and all, I don't know how I missed that on your website, sorry. Tom has been in touch about this and the other clutch ingredients, and so I think we have a plan.

GregBBRD

For various reasons (all longevity related), I've been using the newly released T/O bearing that Porsche recently had remade.

Apparently no longer made by F&S, it is now made in England and seems like it is very robust.

Granted, there were some changes in dimensions and it is more difficult to install....

Opelotus

@GregBBRD Have you experienced any failures on the new Porsche T/O bearing since you started installing them? I installed a new one last year on a friend's '84, along with a new Sachs pressure plate and associated parts, and the bearing failed after about 1000 miles. As you mentioned, the new bearing is dimensionally slightly different that the original Sachs version; it seems that the groove for the snap ring is beveled. This is what caused the failure on my friend's car, as the snap ring blew off the snout of the bearing. Meanwhile there was a terrible about of fretting corrosion after only 1000 miles of use (IIRC the new bearing eliminated the tab which prevents the thrust washer from spinning???). Ended up costing my friend another new pressure plate and a bearing insert (somehow the new bearing thrust washer really ate into the PP fingers). I tried talking to the Porsche parts department but they were of no help. I have heard of at least 2 or 3 other people who experienced premature failure of the new Porsche bearing as well. Major disappointment.

GregBBRD

Zero issues.
I just went and looked at all the bearings I have in inventory.
None of them have a beveled groove for the thrust washer.
The groove is square to the OD, on every one.

Does the failed bearing rotate freely, or did the actual bearing part seize?

Cheburator

The bearing is made by Helix Autosport who now produce intermediate plates too as they scanned and copied one of mine. It’s worth getting in touch with them directly, rather than Porsche…

GregBBRD

Can you share their contact information?

Darklands

https://helixautosport.com/products/