HELP!!! PSS-9 installation
#16
Burning Brakes
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John,
I'm not sure what you mean by "adjustment range is pretty small". I don't have the PSS-9 (I have the H&R coilovers) but I've seen the PSS-9 system and the threaded strut body looks roughly equivalent to the H&R which is a *huge* range. The range looks like 5" from full top (SUV range) to fully lowered. That's not a small range at all. The stock front struts have a very small range, could that be what you're referring to?
I'm not sure what you mean by "adjustment range is pretty small". I don't have the PSS-9 (I have the H&R coilovers) but I've seen the PSS-9 system and the threaded strut body looks roughly equivalent to the H&R which is a *huge* range. The range looks like 5" from full top (SUV range) to fully lowered. That's not a small range at all. The stock front struts have a very small range, could that be what you're referring to?
#17
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John,
I agree with JC. I seem to recall at least 25mm and probably up to 50 mm of thread above where I have mine set all 'round (I'm set pretty low - to RS specs). I'd be surprised if there weren't at least a 30-35mm range of adjustment available.
Am I missing something?
Ben
I agree with JC. I seem to recall at least 25mm and probably up to 50 mm of thread above where I have mine set all 'round (I'm set pretty low - to RS specs). I'd be surprised if there weren't at least a 30-35mm range of adjustment available.
Am I missing something?
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Ben
#18
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I also found when installing the PSS-9 that height adjustment is, in fact, limited. Limited by the drop links. Turned out to be perfectly fine. Actually called Krup/Bilstein during the installation to ask about the height adjustment and was advised that the system is designed to allow lowering as JohnM indicated.
I find the system to be too soft on the street when set at full soft. I have since firmed up the shocks by three notches (6), definitely noticed a positive difference, and it is still not in any way harsh.
If you want more height adjustment, you probably have to go with the Pro Kit or JRZ setup.
Richard (not C4S)
I find the system to be too soft on the street when set at full soft. I have since firmed up the shocks by three notches (6), definitely noticed a positive difference, and it is still not in any way harsh.
If you want more height adjustment, you probably have to go with the Pro Kit or JRZ setup.
Richard (not C4S)
#19
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Richard,
To clarify - I also have the RS sways and thus different drop links - could that make a difference in adjustability? But I think you're right - the drop link clearance rather than available strut threading will be the limiting factor on ride height.
Ben <img src="graemlins/wave.gif" border="0" alt="[byebye]" />
To clarify - I also have the RS sways and thus different drop links - could that make a difference in adjustability? But I think you're right - the drop link clearance rather than available strut threading will be the limiting factor on ride height.
Ben <img src="graemlins/wave.gif" border="0" alt="[byebye]" />
#20
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Ben, JC,
The struts have lots of thread I agree, but Bilstein's information supplied with the kit says 15mm max adjustment for the rear and 20mm max for the front, with dimensions to which that applies. In a post back in Sept last year Laura of Hergesheimer Motorsports made a comment "Ride height needs to be addressed and in our conversations with Bilstein it is something they are aware of" - not sure what was meant by that and she did not elaborate when someone asked.
The struts have lots of thread I agree, but Bilstein's information supplied with the kit says 15mm max adjustment for the rear and 20mm max for the front, with dimensions to which that applies. In a post back in Sept last year Laura of Hergesheimer Motorsports made a comment "Ride height needs to be addressed and in our conversations with Bilstein it is something they are aware of" - not sure what was meant by that and she did not elaborate when someone asked.
#22
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John,
It would appear that shorter drop links would allow additional lowering. The factory drop links and RS links, as well as those supplied with the kit, appear to be the limiting factor, at least in the rear. I don't know if there is any engineering or safety reason that would come into play if shorter drop links were utilized.
Richard (not C4S)
It would appear that shorter drop links would allow additional lowering. The factory drop links and RS links, as well as those supplied with the kit, appear to be the limiting factor, at least in the rear. I don't know if there is any engineering or safety reason that would come into play if shorter drop links were utilized.
Richard (not C4S)
#23
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The drop links present practical issues, certainly, but that is not the issue I'm referring to. I've dug out the leaflet that comes with the kit, there is a page headed:
IMPORTANT!
Spring plates must not be adjusted outside the ranges specified below!
Bold face and exclamation marks courtesy of messrs Krupp Bilstein. This is followed by tables for the front and rear, each of which has an entry "permissible adjustment range". For the front it says:
120 - 140 mm = 20 mm range.
measurement: top edge of spring seat down to the centre of top mounting screw of axle bracket.
For the rear it says:
195 - 210 mm = 15 mm range
measurement: top edge of spring seat down to the center of the bottom mount.
The dampers are designed for a ride height much lower than US std, as is only appropriate. There is a footnote that says:
If vehicle is equipped with a spoiler, lower rear panel and/or special exhaust system, be aware of reduced slope angle ( be careful of ramps, etc. )
Uprated motorsport suspension is Nicht Kompatibel with off-roader ride heights.
IMPORTANT!
Spring plates must not be adjusted outside the ranges specified below!
Bold face and exclamation marks courtesy of messrs Krupp Bilstein. This is followed by tables for the front and rear, each of which has an entry "permissible adjustment range". For the front it says:
120 - 140 mm = 20 mm range.
measurement: top edge of spring seat down to the centre of top mounting screw of axle bracket.
For the rear it says:
195 - 210 mm = 15 mm range
measurement: top edge of spring seat down to the center of the bottom mount.
The dampers are designed for a ride height much lower than US std, as is only appropriate. There is a footnote that says:
If vehicle is equipped with a spoiler, lower rear panel and/or special exhaust system, be aware of reduced slope angle ( be careful of ramps, etc. )
Uprated motorsport suspension is Nicht Kompatibel with off-roader ride heights.
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
#24
Drifting
Thread Starter
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This talk of spring plate adjustment ranges leads me to my next question on my installation. I am going to use the original nut. The way I understand it is that I should tighten it down to almost the end of the threaded portion and then put my torque wrench on it. Correct? Is the torque suppose to be 80nm?
So, at this point I have the shock assembly attached at the perch and the perch completely bolted to the fender. Now, I have a question regarding setting the spring plate holder rings. Where do you start out at? How do I know I am within the specified range? Am I being dense and missing something? Thanks for the help.
NRK,
I will be happy to give an evaluation after I get things set up. As a reference I had H&R springs with US standard shocks prior to this “experiment” as my wife is liking to call it now. She came out to the garage to find the car jacked up and parts laying everywhere. Her only comments do you know what your are doing? Can you put it back together. Will it be safe to drive? Should you have paid someone to do this.
So, at this point I have the shock assembly attached at the perch and the perch completely bolted to the fender. Now, I have a question regarding setting the spring plate holder rings. Where do you start out at? How do I know I am within the specified range? Am I being dense and missing something? Thanks for the help.
NRK,
I will be happy to give an evaluation after I get things set up. As a reference I had H&R springs with US standard shocks prior to this “experiment” as my wife is liking to call it now. She came out to the garage to find the car jacked up and parts laying everywhere. Her only comments do you know what your are doing? Can you put it back together. Will it be safe to drive? Should you have paid someone to do this.
#25
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Brian,
typical wifely comments - do as I do and ignore them
According to John's post of Bilsteins instructions
[quote] 120 - 140 mm = 20 mm range.
measurement: top edge of spring seat down to the centre of top mounting screw of axle bracket.
For the rear it says:
195 - 210 mm = 15 mm range
measurement: top edge of spring seat down to the center of the bottom mount.
<hr></blockquote>
Get out your calipers and have some fun <img src="graemlins/wave.gif" border="0" alt="[byebye]" />
typical wifely comments - do as I do and ignore them
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
According to John's post of Bilsteins instructions
[quote] 120 - 140 mm = 20 mm range.
measurement: top edge of spring seat down to the centre of top mounting screw of axle bracket.
For the rear it says:
195 - 210 mm = 15 mm range
measurement: top edge of spring seat down to the center of the bottom mount.
<hr></blockquote>
Get out your calipers and have some fun <img src="graemlins/wave.gif" border="0" alt="[byebye]" />