Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, WERE due Dec 4th, 2022. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

996 Vs 986 Suspension Components

Recommended Posts

  • Moderators

Physically, I cannot see why they would not fit. But I think you are right that the valving is different. The struts for a Boxster have 986 part numbers and the 996 struts have 996 part numbers. If the specs were the same there would not be different sets of part numbers. Jeff

Link to comment
Share on other sites

The way I see it is all else being equal, the two cars weigh differently and as a result the struts may have different tolerances. I would recommend changing suspension parts with ones that are spec'd out for your application. :)

Link to comment
Share on other sites

I don't mean to be a pain, but what would be the downside of doing it, it seems pretty straight forward and easy - to top it off.

If they have the same sprung weight [almost], The only bias I can see would be the rear not flowing with the front, but I am not a Porsche engineer, so I defer to the audience.


1998-1999 911 Carrera

1320 kg


All models

2350 mm

Track (front / rear)

all models

1455 / 1500 mm

Length, Width

All models

length: 4430 mm

width: 1765 mm


Porsche Boxster

Overall length 171.0 in. (4340 mm)

Overall width 70.1 in. (1780 mm

Curb weight (manual) 2822 lbs. (1280 kg)



Link to comment
Share on other sites

I don't mean to be a pain, but what would be the downside of doing it, it seems pretty straight forward and easy - to top it off.


Well, both cars have quite different handling characteristics due to, amongst other things, their different polar moment of inertia (PMI). That is obviously reflected in the suspension, which is why the Boxster has, at least according to the parts catalogue, different springs and different shock absorbers.

There is no point to drive a low PMI car (boxster) with the same suspension as a high PMI car (996), and there is even less point to use 996 shock absorbers with 986 springs, simply because damping characteristics of the 996 shock absorbers will not match the spring rate of the 986 springs.

It is generally safe to assume that Porsche has put some thought into matching the springs and shock absorbers to the car, which is also why aftermarket springs without matching shock absorbers (and possibly anti-roll bars) is not such a good idea.



Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.