Which coilover, x74, H&R, PSS9/10, KW V3 lowers the car the least
03-25-2009, 03:50 PM
#16
Race Car
For once I'm glad I live in Ohio. I can barely fit my shoe under the front splitter on my Aero I front bumper with the factory splitter on there, but I rarely ever have issues scraping as long as I take transitions at an angle. Matter of fact, my wife drives it more than I do on the street and that same splitter has lived for >2 years without an issue.
Andy
Andy
03-25-2009, 11:23 PM
#17
Thanks, George. No rush, I'm still waiting for parts (2-3- weeks). I have all the manuals, both from Bilstein and every forum there is, covering most anything, except that no one (but you, it seems) has ever tried to get the car any higher than eurospec height. Virtually everyone either wants to slam it low (like 24 3/4 or 25") or goes for 25 1/2, (roughly eurospec). I just assumed that 25 1/2 was as high as they would go. Did you install them yourself, or have them done?
yes i did install them myself with a friend. it took about 6 to 8 hours nice and slow. I think if you follow Bilsteins insrructions (from memory 100 to 120mm for the front and 185 to 190 for the rear) the height at the fenders will be about 24.25 rear and 25.5 front. Also, the correct way to measure the vehicle height is from certain points under the car. i set mine a little higher that the recomended x74 heights, 127 front and 136 rear (note that these dimensions are from the chassis to the ground, not like the Bilstein measurment referenced above. Besides the initial installation i have tweeked the heights several times to get it where i like it. will post pics next week.
03-26-2009, 01:48 AM
#18
Burning Brakes
More excellent information! Yes, I am aware of the under chassis dimensions/locations F&R that Porsche uses. I prefer them to be even and a lttle higher than X74 as well, as my car is/will be 95% street. Really sounds like you've done the hard work for me! Thanks a ton!
03-26-2009, 03:20 AM
#19
More excellent information! Yes, I am aware of the under chassis dimensions/locations F&R that Porsche uses. I prefer them to be even and a lttle higher than X74 as well, as my car is/will be 95% street. Really sounds like you've done the hard work for me! Thanks a ton!
Also, you will like the handling and dampening adjustability. I auto-x about once per month and plan to do some DE. If you like to play around then you will probably change the dampening depending on what you are doing with the car. This is one advantage that the x74 over the pss9's has as well as there is nothing to fiddle with. I am sure there are other pros and cons.
There is one negative point for me, it is not uncommon to hear a twang/klunk when making a turn into a driveway. You can research this on this site.
03-26-2009, 05:59 PM
#20
Burning Brakes
Yes, I've read a lot about it, but while not uncommon, it doesn't seem to be universal. Some have used thrust sheets between the springs and seats on coilovers in general. When you did yours, did you reuse ALL the parts from the front struts (minus the bump stops)? I've seen where the majority seem to have not reused the upper bearing (part #11 in the PET), assuming the rubber spacer and backing plate will perform the same function. The ones that reused (or put in new) bearings, seemed to have eliminated the noise. Just curious.
03-26-2009, 11:12 PM
#21
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I think some people us the X74 upper bearing mount on the front when installing PSS9 because it is stiffer than the stock suspension mount. It should eliminate the klunk noise .....
I opted for X74 on my car because I knew I'd never fiddle with the ride height. It transformed the car, far better handling than stock and really improves the look. No scraping issues at all, just angle over speed bumps and curbs ....
I opted for X74 on my car because I knew I'd never fiddle with the ride height. It transformed the car, far better handling than stock and really improves the look. No scraping issues at all, just angle over speed bumps and curbs ....
03-27-2009, 09:26 AM
#22
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Yes, I've read a lot about it, but while not uncommon, it doesn't seem to be universal….When you did yours, did you reuse ALL the parts from the front struts (minus the bump stops)? I've seen where the majority seem to have not reused the upper bearing (part #11 in the PET), assuming the rubber spacer and backing plate will perform the same function. The ones that reused (or put in new) bearings, seemed to have eliminated the noise. Just curious.
03-28-2009, 02:18 AM
#25
Burning Brakes
I've also ordered X74 upper strut mounts (and new rear upper mounts as well) mainly because I didn't want to reuse 7 year old rubber parts that have taken a set. The bearings are the same for X74 and stock. I still may use thrust sheets.
03-28-2009, 03:04 AM
#26
the x74 front mounts have a different offset than the stock so that you can have minimal negative camber at the low ride height. In other words the relationship between the strut centerline to the plate mounting bolts is 9mm more towards the fender. I actually measured this when installing x74 on a friends car. I found that at my ride height (25.75) i could adjust between 0.2 to 0.8 negatvie. I would think that with the x74 mounts i would not be able to have as much negative camber. It just depends on what you are trying to do.
Last edited by george996; 10-11-2013 at 06:34 PM.
03-28-2009, 10:29 AM
#27
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george996, that is good info ... If i remember correctly the Porsche X74 front camber spec is 0.4 negative +/ 0.1, For the street I don't think you"ll want to run more than 0.5 negative in the front. I run 0.5 in the front and 1.5 negative on the rear, X74 ride height is the same as GT3 ....
03-31-2009, 01:04 AM
#28
Burning Brakes
Jeez, where were you a month ago when I was trying to find out JUST this kind of info!! Can you verify (or recall) that the X74 mount was a stiffer mount? I'm basing my input on an email from Gert at Carnewel(?) that told the X74 was stiffer and should better match the PSS9s characteristics. Like I mentioned the car is/will be 95% street, so I wouldn't give it a track alignment anyway, but dang, 9mm is about 3/8" and that does sound like a lot! Well, I'll eventually have the standard top strut mount and the X74's side by side and can decide then I guess. I'll take plenty of pics. I just hate to have paid a premium for the same mount, where the only difference is the center hole. I wonder if with the standard top mount, can you still get X74 height street alignment, or are you forced to have more neg camber because the mount can't be slid far enough to the outside?
Last edited by perryinva; 03-31-2009 at 01:43 AM.
03-31-2009, 01:33 AM
#29
Parts Specialist
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why is it I feel so lost and confused now.........
arg, I will re-read these - great info, just tough to digest all in one sitting
although I found I am running -.55 front and -1.55 rear camber.. YEA, I am happy I found that in my print out from my alignment
arg, I will re-read these - great info, just tough to digest all in one sitting
although I found I am running -.55 front and -1.55 rear camber.. YEA, I am happy I found that in my print out from my alignment
Last edited by ivangene; 03-31-2009 at 02:05 AM.
03-31-2009, 02:21 AM
#30
Jeez, where were you a month ago when I was trying to find out JUST this kind of info!! Can you verify (or recall) that the X74 mount was a stiffer mount? I'm basing my input on an email from Gert at Carnewel(?) that told the X74 was stiffer and should better match the PSS9s characteristics. Like I mentioned the car is/will be 95% street, so I wouldn't give it a track alignment anyway, but dang, 9mm is about 3/8" and that does sound like a lot! Well, I'll eventually have the standard top strut mount and the X74's side by side and can decide then I guess. I'll take plenty of pics. I just hate to have paid a premium for the same mount, where the only difference is the center hole. I wonder if with the standard top mount, can you still get X74 height street alignment, or are you forced to have more neg camber because the mount can't be slid far enough to the outside?
below is a pic of my 996. running about 25.75 f & r. I wanted more negative camber since i auto-x.
Last edited by george996; 10-11-2013 at 06:35 PM.