PSS9/PSS10 "Voodoo" knobs...
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From: Solana Beach, CA
PSS9/PSS10 "Voodoo" *****...
That are claimed to control compression and rebound. I have been a naysayer, that is, until now. Go to the URL below
http://www.bilsteinus.com/products/p...b16-pss9pss10/
Next, look at the right corner of the page, you'll see two (2) symbols for "DOWNLOADS". click the first one. This will take you to a page, and at the bottom is a graphic showing the "*****" effect on compression and rebound, the lower thew **** #, the stiffer the suspension, and the contrary for the largest number, be it 9 or 10.
The more I read the more I conclude the PSS9s and PSS10s are essentially the same other than the *****. The PSS9 ***** are a pain in the *** in my humble opinion, the PSS10 ***** are bigger and look to be easier to adjust.
http://www.bilsteinus.com/products/p...b16-pss9pss10/
Next, look at the right corner of the page, you'll see two (2) symbols for "DOWNLOADS". click the first one. This will take you to a page, and at the bottom is a graphic showing the "*****" effect on compression and rebound, the lower thew **** #, the stiffer the suspension, and the contrary for the largest number, be it 9 or 10.
The more I read the more I conclude the PSS9s and PSS10s are essentially the same other than the *****. The PSS9 ***** are a pain in the *** in my humble opinion, the PSS10 ***** are bigger and look to be easier to adjust.
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That are claimed to control compression and rebound. I have been a naysayer, that is, until now. Go to the URL below
http://www.bilsteinus.com/products/p...b16-pss9pss10/
Next, look at the right corner of the page, you'll see two (2) symbols for "DOWNLOADS". click the first one. This will take you to a page, and at the bottom is a graphic showing the "*****" effect on compression and rebound, the lower thew **** #, the stiffer the suspension, and the contrary for the largest number, be it 9 or 10.
The more I read the more I conclude the PSS9s and PSS10s are essentially the same other than the *****. The PSS9 ***** are a pain in the *** in my humble opinion, the PSS10 ***** are bigger and look to be easier to adjust.
http://www.bilsteinus.com/products/p...b16-pss9pss10/
Next, look at the right corner of the page, you'll see two (2) symbols for "DOWNLOADS". click the first one. This will take you to a page, and at the bottom is a graphic showing the "*****" effect on compression and rebound, the lower thew **** #, the stiffer the suspension, and the contrary for the largest number, be it 9 or 10.
The more I read the more I conclude the PSS9s and PSS10s are essentially the same other than the *****. The PSS9 ***** are a pain in the *** in my humble opinion, the PSS10 ***** are bigger and look to be easier to adjust.
As you know, the PSS10 is essentially the next gen to the PSS9. Aside of some improvements to the weak area of the 9's ****, valving consistency and some construction changes, it is basically the same.
https://rennlist.com/forums/performa...ifference.html
I am with you regarding preload, compression, and rebound damping for track dedicated suspension packages.
The compression/rebound damping, touted in the PSS10, is not much more than Marketing 101, and you know it! The answer was contained in your previous post re the new Carnewal Porsche suspension offering.
..."the lower thew **** #, the stiffer the suspension, and the contrary for the largest number, be it 9 or 10."
Ignore the notes on the chart, it's the only one I could copy over. This is generic PSS10, , not specific to a 993 part number.
Last edited by nine9six; Jan 2, 2017 at 11:14 PM.
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From: Solana Beach, CA
50 % of the mystery solved.
Thanks gents, your posts have been very illuminating, love that graph. I couldn't manage to cut, paste and save the one on the Bilstein website.
Damon from Tire Rack (Above noted URL) has an informative post up, hadn't seen this before, didn't catch it in my search attempts.
As far as is setting "#1" the stiffest, or is it setting "#10", I am still not 100% clear on this, and I really don't need to be at this point...don't own PSS10s now, but have owned PSS9s...those front ***** were a bitch to adjust consistently, one of the reasons I got rid of them. In fact one failed and I had to pull off the shock and send it back to Bilstein for a fix. And while you're in there, I sent the other three struts/shocks back for a rebuild.
The second part of the mystery, what are the ratings for the PSS9 and PSS10 springs for the 993 narrow body? I have heard multiple conflicting reports. I have posed the question to Patrick Motorsports..they sell Bilsteins and associated install goodies. I realize the PSS springs are progressive...
According to the PCA GCRs, springs rates for the PSS9s run on **** Boxster are 450 front 500 rear, or the inverse of the owners wishes to swap out the springs. I have seen a Bilstein M3 spec, 460 front and 685 rear, now that is a r993 acing setting if I have ever seen it.
From Bilstein 1/3/17 Technical Support:
FRONT
MAIN: 225
TENDER: 255
REAR
MAIN: 405
TENDER: 570
Damon from Tire Rack (Above noted URL) has an informative post up, hadn't seen this before, didn't catch it in my search attempts.
As far as is setting "#1" the stiffest, or is it setting "#10", I am still not 100% clear on this, and I really don't need to be at this point...don't own PSS10s now, but have owned PSS9s...those front ***** were a bitch to adjust consistently, one of the reasons I got rid of them. In fact one failed and I had to pull off the shock and send it back to Bilstein for a fix. And while you're in there, I sent the other three struts/shocks back for a rebuild.
The second part of the mystery, what are the ratings for the PSS9 and PSS10 springs for the 993 narrow body? I have heard multiple conflicting reports. I have posed the question to Patrick Motorsports..they sell Bilsteins and associated install goodies. I realize the PSS springs are progressive...
According to the PCA GCRs, springs rates for the PSS9s run on **** Boxster are 450 front 500 rear, or the inverse of the owners wishes to swap out the springs. I have seen a Bilstein M3 spec, 460 front and 685 rear, now that is a r993 acing setting if I have ever seen it.
From Bilstein 1/3/17 Technical Support:
FRONT
MAIN: 225
TENDER: 255
REAR
MAIN: 405
TENDER: 570
Last edited by Martin S.; Jan 4, 2017 at 01:03 AM.
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From: Anaheim Hills, CA
My understanding is that for PSS9, setting 1 is the stiffest. For PSS10, setting 10 is the stiffest. So much for consistency.
The springs on PSS9 appear to be progressive, which is consistent with the descriptions. It will be interesting to see what you find out about the PSS10 springs, to me they do not physically appear to be progressive.
The springs on PSS9 appear to be progressive, which is consistent with the descriptions. It will be interesting to see what you find out about the PSS10 springs, to me they do not physically appear to be progressive.
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From: Central California
I called Bilstein regarding spring rates. For the AWD 993 kit, They said the tender springs actually are "assisting springs". The combined F/R rates of both springs sets is about 500/700 F/R. That was from the kid who sounded about 20 yrs old. So not solid on those numbers. Not sure if you can swap springs for bigger ones on the PSS systems?
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I called Bilstein regarding spring rates. For the AWD 993 kit, They said the tender springs actually are "assisting springs". The combined F/R rates of both springs sets is about 500/700 F/R. That was from the kid who sounded about 20 yrs old. So not solid on those numbers. Not sure if you can swap springs for bigger ones on the PSS systems?
500/700 F/R.
the tender and main are not additive in nature, the froont comprsses fully before the rear much more than starts, It thus has 2 'set points'
PSS10 was reported as 225/250 front and 400/685rear tender/main
front: main E4-FD1-Y406A00 tender E4-FD1-Z351A00
rear: main E4-FD1-Z348A00 tender E4-FD1-Z418A00
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Thanks gents, your posts have been very illuminating, love that graph. I couldn't manage to cut, paste and save the one on the Bilstein website.
Damon from Tire Rack (Above noted URL) has an informative post up, hadn't seen this before, didn't catch it in my search attempts.
As far as is setting "#1" the stiffest, or is it setting "#10", I am still not 100% clear on this, and I really don't need to be at this point...don't own PSS10s now, but have owned PSS9s...those front ***** were a bitch to adjust consistently, one of the reasons I got rid of them. In fact one failed and I had to pull off the shock and send it back to Bilstein for a fix. And while you're in there, I sent the other three struts/shocks back for a rebuild.
The second part of the mystery, what are the ratings for the PSS9 and PSS10 springs for the 993 narrow body? I have heard multiple conflicting reports. I have posed the question to Patrick Motorsports..they sell Bilsteins and associated install goodies. I realize the PSS springs are progressive...
According to the PCA GCRs, springs rates for the PSS9s run on **** Boxster are 450 front 500 rear, or the inverse of the owners wishes to swap out the springs. I have seen a Bilstein M3 spec, 460 front and 685 rear, now that is a r993 acing setting if I have ever seen it.
So I'll keep digging for the "official" springs rate, maybe a note to Damon is in order?
Damon from Tire Rack (Above noted URL) has an informative post up, hadn't seen this before, didn't catch it in my search attempts.
As far as is setting "#1" the stiffest, or is it setting "#10", I am still not 100% clear on this, and I really don't need to be at this point...don't own PSS10s now, but have owned PSS9s...those front ***** were a bitch to adjust consistently, one of the reasons I got rid of them. In fact one failed and I had to pull off the shock and send it back to Bilstein for a fix. And while you're in there, I sent the other three struts/shocks back for a rebuild.
The second part of the mystery, what are the ratings for the PSS9 and PSS10 springs for the 993 narrow body? I have heard multiple conflicting reports. I have posed the question to Patrick Motorsports..they sell Bilsteins and associated install goodies. I realize the PSS springs are progressive...
According to the PCA GCRs, springs rates for the PSS9s run on **** Boxster are 450 front 500 rear, or the inverse of the owners wishes to swap out the springs. I have seen a Bilstein M3 spec, 460 front and 685 rear, now that is a r993 acing setting if I have ever seen it.
So I'll keep digging for the "official" springs rate, maybe a note to Damon is in order?
1 is comfort soft
10 is sport stiff
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From: Solana Beach, CA
Front: 225 Main/255 Tender
Rear: 405 Main/570Tender
*** Concur with Bill
Now the question is, what are the PSS9 spring rates? Anyone can call their office (I called Poway, CA), all you need is a part number and they'll give you the info. Maybe I'll call them tomorrow. Then again, what for? I don't think they are making PSS9 for 1995 to 1998 Carrera cars. And even if they did, those damn ***** are a pain in the *** to adjust. I had a front that lost its clicks, had to send it back to Bilstein, while you're in there, might as well rebuild it (Them)...of course I had to send the other front, and the two (2) rears while I was at it.
Last edited by Martin S.; Jan 4, 2017 at 01:05 AM.