I haven't climbed underneath but can someone tell me if the PSS9's be ride height adjusted while mounted or does it require a disassembly? I'm at GT2 height at present and considering raising 1/2" or so.

Thanks.

 

You can adjust the firmness for front and rear while it's on the ground, but I'm almost positive it needs to be on a lift to change the ride height. I haven't changed my height settings so I'm not sure what level of labor is involved.

 

Fairly certain you change the ride height while they are mounted but if you are at GT2 ride height you should definitely raise your car. The PSS9's are not meant to ride that low and you can easily blow a shock/damper.

 

do you know of anyone who has blown a shock or damper ? i have read that it can affect the handling in a negative way but dont remember seeing anyone whose car has been damaged as a result of pss9's being set low

 

They shouldn't require disassembly. Do you have the spanner wrenches for the coilovers. Has your car been corner balanced.

If you're attempting a DYI, make sure your car is on level ground, proper air pressure in tires and take some reference measurements. People recommend measuring from the "center" of your wheel center caps to bottom of fender lip. But sometime that's hard to be consistent with finding the approximate center. I hook the tape measure on the bottom lip of the wheel and then measure to the bottom of fender lip.

Without a lift you will need to jack up and remove the tire(s) either one corner at a time or use jack stands; do all four or front then backs.

Maybe start with 1-2 full turns on each coil over, make reference point before turning. I believe turning up (compressing spring) will raise the car. After all four corners are done, wheels on etc. and car on ground, move / drive car back and forth a few times to settle adjustments. Then measure again to see how much you adjusted them.

Repeat if necessary.

It's a bit tedious but, I hope this give you an idea.

Good luck!

 

Not personally but I've read about it here. IMO, it's not worth the risk. The reality is, between GT2 ride height and 20mm safely above it, you wont notice a difference in handling on the street, I doubt even on the track. If you wanna run that low just get a set of JIC's.

As mentioned above, I'm fairly certain you dont need to remove the damper to adjust it but it's MUCH easier with a lift. I'd recommend taking the car to your local competent shop. The should be able to do it in under an hour or two and they'll get it right the first time.

 

Does any body know what exactly the GT2 ride height should be front and rear ?
Where are the measure points on the chassis ? How does that calibrate to fender lip height?
I have JICs and want to lower to that .
any help would be appreciated
Elliot

 

i did mine on an 01 no problems and it been a couple of years

 

Turbohead,

I had the same question. I'm sitting at 25 1/4 to 25 1/2" from ground to lower lip of fender opening. Not sure where that fits in with the USA, ROW or GT2 heights or what the measurements are from the method described in tech manual. I may try and get those measurements later this week.

K

 

If you have the spanner wrenches that came with the shocks, put the whole car up on jack stands. Pull the wheels and start to raise the coil collars keeping the number of turns even. (The correct height measurements are taken off specific frame points under the car). You can mark one of the notches in the collars to keep track of the number of turns. (If you're at GT2 ride height with PSS9, you're much too low.) You can use a tape measure after you're finished as a rough estimate if you've done it right. When you're done, you'll need to get an alignment as raising the car will change camber and toe.

 

Usually the Bilsteins don't externally fail, but internally wear out very quickly if set too low or too stiff.

 

Ok I took some measurements using the Tech Manual measuring points and here's what I found:

___________________***** Relative to *********
__________Current ___USATT ROWTT X73 GT2
Front _____114mm ____-44 __-24 __-14_ -4
____Fender 25 1/4"
Rear ______128mm____ -35 __-25___ -5 _-5
____Fender 25 1/4"

Bottom line is the car is set very low.

Not having problems that I'm aware of, but haven't really pushed it as yet or had track days. My concern is the discussions in the past about PSS9's not suitable for GT2 ride heights and running out of room, hitting bump stops.

I'm wondering how low I can really go without having issues with PSS9? Is the ROW a safe setting? Or maybe split the difference between ROW and X73.

Thoughts?

 

Well, remember there are PSS9's that are valved differently and may also have internal modifications like MiKelly's. He is at GT2 height no problem. When i was at the height of the above posters (below GT2), the car would basically ride on the bump stops taking an off/on ramp at slightly higher than normal speeds. It would also porpoise in the front on the highway if it went over some undulations. I have since raised it about .5" and it seems to have helped TREMENDOUSLY. I am on PSS10's for reference, but they are basically the same.

 

Do you mean at 114mm & 128 mm you are too low?...are the the x73 measurements lower than this meaning you should deduct that amount ?
Where are tech manual measuring points ?
please explain.
Elliot

 

My numbers of 114mm front and 128mm rear is lower than any of the Porsche Measurements for even GT2. The "-" numbers are how much below the settings I am for each of the options. I cot the particular points from where to take measurements and the actual values from the Porsche Repair Manual. There's an actual picture in the manual, but here's the description of points:

Front axle

Measure from road contact surface to the lower edge of the hexagon−head bolt of the tension−strut screw connection on the body!

Rear axle

Measure from wheel contact surface to the locating bore in the rear−axle side section (between toe and camber eccentrics)!