996 suspension question

Currently enjoying a �03 996 Carrera Cabriolet with 19� wheels installed. I would like to add moderately stiffer springs but retain stock ride height. All the upgrade springs I have found are engineered to lower the ride height. Can anyone advise on a spring set that does what I want? Thanks

Generally speaking, suspension components (especially springs &s trust/shocks) are engineered to work together. So, with non adjustable struts/shocks it�s difficult to just swap out the springs - as they were designed/engineered to work with a specific amount of damping provided by the strut/shock� Your best bet is to go with something that�s adjustable - ie, coil overs�

Have you considered going with sportier shocks? They can be found that will work with your existing springs.

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For the labor and cost involved with swapping in new struts, it�s a better idea to get adjustable coilovers and be done with it.

I will be upgrading my shocks, but wanted to add OEM height springs with a slightly higher rate and stiffness ... probably add thicker sway bars as well ... just didn't want to spend big on the coil overs ...

There’s a company that does this. I used them on my van to accept heavy loads without sagging. I was skeptical but they turned out amazing and do exactly what they were designed for. You don’t even notice that they are heavy spring rates.

OP - What is(are) the target performance parameter(s) you seek? Why a stiffer sway bar if you don’t want to lower the COG, for instance? What is the mileage on your suspension? What shocks and springs are you currently on? Have you driven another 996 to compare rides? So you need to find a spring rate that’s a bit stiffer but won’t degrade the performance and has the same static height. As mentioned, shocks are valved to work best within a specific range of rebound and compression rates. You’ll need to research the shock and spring combos to find a spring with specs within the range of a shock’s performance characteristics. I believe you’ll find you have a very small pool of candidate springs to match your existing shocks or, indeed, find a combo that improves handling noticeably at stock height if your current suspension isn’t worn out. From Dickerson, Gagnon and Schatz, “ 996 Standard and Sport Suspensions Analyzed”, PCA Panorama, 2003

Thanks ... do you remember the company name?

Www.coilsprings.com expect to pay $6-800 for a complete set

Just an idea based on his YT channel, why not contact fat cat motorsports You Tube

Since my 996 is 19 years old, and run 90K miles, I�m assuming the shocks and springs are original. Before I make any solid decisions, I should know the stock new ride height. Are there measurements from ground to the top of the front and rear wheel wells, that should be considered before any ordering of replacement parts?

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You might want to consider the ROW M030 Sport Suspension kit from Porsche. It does lower the car, but it's a very modest 10mm. The kit comes with springs, shocks/struts and sway bars. The downside is that it's gone from $1,400 when I bought mine in 2017 to $3,000 today. https://www.gaudinporscheparts.com/o...it-00004450007

I live in a super smooth part of Australia. Canberra the national capital. Cyclists tell me of the improvement in road quality crossing the border.Also - my inter city commutes are smooth, so I'm "risking" Feals 441+ 7 and 13. As a club member the rough road guys who want a little more from a 996 coupe or convertible use Bilstein B6 shocks. A stock rebuild oncluding springs, and might go H and R, Eibach or premium sways. A complete stock refresh does a lot for cars at this age. Many have perfect service books but the shocks, arms related bushes are very worn. You might be plesantly surprised by a close to stock approach as above.

Exactly what I was considering � after many years of use the suspension parts must be sagging a bit � with a baseline reading of OEM new ride height measurement vs. what I�m faced with currently, I may be riding at a 1� drop now - just from wear, and in that case can invest in the easily sourced sport drop springs etc. to get what I want � anyone with particular spring and shock packages able to list the manufacturer / model / part number and age of the components on the car as well as the measurement from street to top of wheel well center?

Good idea to measure ride height. Porsche spec is given as a distance between ground and certain points on front and rear suspension attachments and thus are dependent of wheel size (tyre radius to be exact). Specs are given for 17" and 18" wheels. See page 275 in Adrian streather's 996 companion https://books.google.de/books?id=Raa...page&q&f=false