rjtw

Just resurrecting an old thread here in preparation for replacing rear shocks on my '83. While I don't have any special symptoms of any alignment or wear problems, I'm considering replacing all the rear rubber suspension bushings as a matter of course (four upper control arm, two inner lower control arm, AND the four bushings pressed into the rear hubs). And I'm also assuming that the Weissach bushing is still NLA so guess I'll need to leave that alone.

As a note to self, here's another good thread on the rear bushings, and working on the rear suspension generally: https://rennlist.com/forums/928-foru...-bushings.html

My question: I think I've seen some advice on other threads that it's best to NOT replace the four bushings pressed into the rear hubs. Why is that? Stan, I think that advice may have come from you, so just wanted to confirm the reasoning?

Also, Rob -- is your offer still good? I'm in Nor Cal but could definitely drive down with the parts sometime this fall!!!!

Thanks all,
Rick

Cheburator

Rick,

The Weissach bushing has been available for years. It's the price that sucks...

https://www.rosepassion.com/en/cat/p...ker-bar/P22489

There is an alternative from Powerflex in polyurethane too... Search their catalogue...

Hope this helps,

Alex

Speedtoys

Still no reason not to stay OE, a plastic bushing doesn't work the same as a rubber one.,,if you can find one now (Discontinued), $600US for a part that will last another 40yrs is a good buy.

Still, a used one should be fine..like most OE bushes, they stretch and twist...and last nearly forever.

skpyle

I am going to add to what Speedtoys said, the rocker bars rarely wear out. Please look at my thread below where I swapped rocker bars from one set of rear lower control arms to another. The rubber bushings were fine. I had problems with seized bolts in the originals.

Also, if I remember correctly, both Stan and SeanR mentioned that pressing out and then pressing back in the four bushings in the lower control arms was a bitch. Mucho trouble with keeping them aligned going back in.


https://rennlist.com/forums/928-foru...trol-arms.html



Good Luck!

GregBBRD

NO guys, they go bad.

The last time I tried to get some of these, my dealer told me that they were NLA. Porsche has been actively "moving" parts from their "normal parts supply" and "hiding" them away in the "classic" parts system....so they might have moved these, which is why my regular dealer could not get them (I've been running into this on a routine basis, BTW.)

I talked to Mark Anderson about having the people that rebuild his control arms (in Europe) build new ones of these.

Last I talked with him, he told me that they were in the process.

Speedtoys

Sure, eventually, when was the last thread on these going bad? It's not a perfect data point, but it's not a huge wild field problem with any exposure on RL either.

But still no reason not to shift from proper materials to something that doesnt work the same, when they do go bad.

rjtw

This is great info. Seth, thanks for the thread (I KNEW there was a recent thread on this!!) and Greg, that's really valuable info.

Seeing as how I already have Anderson's rebuilt front upper and lower A-arms for the front, new shocks, along with a bag of all the nuts the WSM calls for being replaced F&R (AND the Optimoly and Molykote lubricants), I think I'll do a "total" refresh here and replace all the bushings in the back too including the Weissach bushing.

My new mantra: "Good for the NEXT 35 years!!"

Greg, any words of wisdom on replacing all the rear bushings, especially keeping the lower outers aligned properly? (I'm imagining pressing them in with the link pin inserted?) Lube everything with Molykote first?

EDIT: Just saw in Seth's thread that Rob Edwards recommends "AGS Syl-Glide". I'll look into that. Seth, is this the product?
Cheers,
Rick

Cheburator

Rubbish!

it’s not discontinued for God’s sake! You can order as many as you like and they will ship from Germany on Monday at $640-odd per bush.

Also, Porsche doesn’t move and hide things in Classic catalogues. They either have them or they don’t in their main warehouse in Germany. However, Porsche has no way of knowing what individual dealers may have on each continent. Hence why we sometimes see parts with Sunset or AutoAtlanta that are NLA in Europe. The Germans sometimes shop in the UK from individual dealers and vice versa. Everyone is making sound like you need some secret handshake kind of thing. You don’t - you just need to ask...

Speedtoys

Huh, Auto Atlanta and a few online sources show NLA...great update!

ROG100

Actually they have NOT been available for some time - I just double checked - none in the Stuttgart main warehouse in Germany, none in all three warehouses here in the States or sitting on a shelf at a dealer here in the USA/CAN. I can't see dealer stock in Europe or the ROW but I doubt many are sitting there at that price.
They were officially stated as NLA and removed from being stocked on 3/28/2018.

I agree about Porsche Classic - any numbers they have in stock are included in both PET and the master price/order lists. Certainly not hidden as such.

Cheburator

Without wanting to get into a pissy argument etc I would trust the biggest supplier of Porsche parts globally outside of Porsche themselves
to be pretty current on stock, especially given that 99% of their stock comes in from Stuttgart.

https://new.rosepassion.com/en/diagr...cker-bar-22489

Also, Porsche GB tell me the part has been dropped without replacement on your date of 26/03/18 indeed, however Porsche GB are showing a price, which is pretty much the same as Rose Passion. It is very rare, almost impossible for Porsche to drop a product and to still show a price and not to have the part in stock.

Another nugget of info - Rose Passion are very good with their traffic light system of availability and also with their shipping out days. I tried to order on Thursday and it said it would ship on Monday - if they had it in stock in France it would be shipping on Friday. If it is green light and shipping out on Monday coming, it means it is coming in from Germany, most likely....

DuncanF

I’ve had an order cancelled by Rose Passion in the past because they couldn’t get hold of the parts. I ordered from my local Porsche Centre instead and it took over 3 months. Given how much I’ve bought off of Rose Passion it’s a pretty good hit rate but they’re not infallible.

Duncan

ROG100

Not a pissing contest at all just stating absolute fact. Porsche does not have any at all in USA/Canada or in the Stuttgart Warehouse. If they did I would be selling them I can assure you as I get asked for them all the time. I have ordered many parts from Rose passion in the past, that they have for sale knowing they are not available via Porsche, but hoping they might have some in stock - and as always they refund my money. Same goes for Pelican. Does that mean RP has a couple on the shelf - possible but doubtful. Does it mean a dealer somewhere in Europe has a couple on the shelf possibly. All you have to do is call a Porsche parts department in the UK or Europe and ask for availability, They can then look at all the dealers in Europe like we do here in the States. If you can find them I WILL buy them from you no problem at all.

Nobody at the large parts suppliers checks stock on 928 parts like I do - I do every day - seven days a week.

See the attached .pdf - pretty self explanatory. It shows a price for the old part but that will disappear in time if the part is not superseded and/or reintroduced. Notice that my PET is the latest iteration of illustration and price PET 8.0 523/148. I am not allowed to post actual pictures from the Porsche system as I got into a lot of trouble the last time I did that.
The part is on the Classic list as a needed part so fingers crossed it will be available again at some point in the future.

I have no vested interest in making this stuff up because I make money by selling 928 parts 8>)

ROG100

I am hoping you are correct and that RP knows more about stock than Porsche - I just ordered and paid for one and fingers crossed they have some as I have customers waiting.

Cheburator

I hope you receive it. If you do - you owe me a beer
If you don’t - I will eat humble pie and will keep my mouth shut...

P.S. I too have the full on proper PET linked via the internet to Porsche’s database. I update it once a week. The pdf has long been consigned to history. And yes, I get the same message, but I also get a price, which is unusual...