S4ordie

Stock original coils/springs (88k mi over 20 years) with Bilsteins turned down almost to the bottom (2.5 to 3 threads showing). Most comfortable and confident suspension I've ever had on the same car. Rob Edwards and I spent a couple of hours Sharktuning on all manner of roads and speeds. This suspension setup works very very very well. Simple too.

James Bailey

The only adjustment on the Bilstein is for ride height has nothing to do with valving or how it rides. The old very brown 1980 has Eibachs and Bilsteins I quite like how it feels but perhaps I have more cushion on my butt than some Bilsteins were an option with the "sport suspension" for many years but they cost much more than the Boge shocks. Bilsteins are a mono tube shock with digressive valving. They have high pressure gas over oil to help prevent foaming. I may be getting old but I still like it to be stiff..........

Speedtoys

No it doesnt, it shows you came in without a reasonable argument, just wanted to huff about something to a newbie.

Yes, you're taller than me.


Congratulations.


SO..about those higher spring rates, do they ride softer where you come from?

Porsche's come from Germany, and in Germany..stiffer springs ride...stiffer.

EspritS4s

Actually, my original question was an honest request for information (btw from someone who has owned 5 928s over the last 8 years). I came in with NO argument. You responded to my post, not the other way around. However, regarding your response, you've owned your 928 for what, all of three weeks? Maybe you should get the lay of the land, or at least get a little experience with your car before offering advice (especially 928 specific advice)? Or maybe not, 357 posts is pretty impressive for someone's first month on Rennlist, obviously you have a lot to offer.

blown 87

Nice post.

ROG100

928 343 055 04 and 051 08 are oil filled Boges. Be careful you don't buy them by mistake.
The later gas Boges are very hard to find now particularly the fronts.
After they are gone - nothing.

Would the oil filled shocks be any good on a street car? They are available but probably old stock.
Is this a possible alternative or bad idea?

Mrmerlin

from installing all 3 types of shocks
Boge oil
and boge gas
and bilstiens
the oil filled seem the least damped
the gas a bit better
the bilstiens the most
I find the Boges offer more of a Cadillac ride, if you push on a corner of the car the body will more freely.
If you try that with a fresh set of Bilstiens the body may move an inch or so . its rather stiff at rest
As Greg said earlier, the best money spent on a 928 is for a good set of shocks,
i would suggest Bilstiens and stock springs, they offer a great great ride and superior handling at speed , offering a ride thats comfortable for long distance ,and hi speed

WallyP

Remember that you are looking at a complete package. Suspension that is perfect for touring might suddenly be really harsh when you change from 16" to 18" wheels...

BigAl1

Thanks for the info Roger and Mrmerlin.

BigAl1

I did a search and didn't see a clear answer, so here goes. Can Bilstiens use the stock springs and perches from a 1980 Euro S? And secondly, can the later Boge gas shocks from 86+ use the same stock springs and perches from my '80?

Thanks

depami

I've heard that can be a problem!

Mrmerlin

Al if you get new Bilstiens it will come with new lower perches and adjuster collars.
If you get new Boges it will just come with the shock you would use the old lower perches and adjustable collars if your older car has them , it probably wont) otherwise use just the lower unadjustable collars from the 80

You will use the old top perches in all cases and you should look at each shock to verify that the plastic dust covers are still intact, dont take the shocks aprt till you have new dust covers, used will also work as the shocks have to totally taken apart to fit the dust covers,
Note the covers usually crack on the older cars due to age

James Bailey

Calling them gas shocks is somewhat misleading. All the shocks use oil as the medium for restricting movement. Gas shocks just add high pressure gas to keep the oil from getting aerated/foaming when used on uneven surfaces for a long time. Just as a pressure cooker or radiator cap elevates the boiling point the gas helps keep bubbles out of the oil.

depami

Doesn't the gas also push the shock to full extension when not installed?

Is this not correct?

Compress a non gas shock and it stays. Compress a gas shock and it returns to full extension.

James Bailey

Yes the gas acts like a spring a weak one but a spring.