Bigbwb

hey guys,
Looking to upgrade from my 2006 CS to a 2010-11 turbo 997.2. Have there been any changes to the suspension/ride quality between these models? I'm aware of the engine/tranny, infotainment, etc, changes but not sure on the suspension.

Any help or links would be great!

Thank you,
Brandon

Hella-Buggin'

Yes. The PASM system was refined and I've been told is much better. Smoother and quicker reactions and more adaptive to road conditions. This is just based off of discussions with friends.

Bigbwb

Good to hear! My current 2006 CS with PASM rides a bit rough even in "normal" mode. Any further improvements in ride quality would be much appreciated!

Thanks for the reply.

ogun228

Don't spend money needlessly: you'll never achieve the cushy ride of a sedan. This is a sport car and the ride is consistent with the handling. The 991 is smoother and a lot of RL'ers prefer the 997 because of that.

Bigbwb

I am aware it wont ride like a sedan Just want it to ride a bit better than my current car. I have driven/rode in several 991's and they are a drastic improvement over my 2006. Im hoping the 997.2 will be somewhere in between!

ogun228

Before you go all out with $, try other things like tire pressure (lower), 18in. rims if you have 19's. Just trying to save you some $.

Jossue

Keep in mind that a lot of other factors can make or break your ride quality, like.....the age of the tires, how old are your shock absorbers, also mounts pretty much anything that is still in the car since it left the factory it is a 9 year old car. Please don't take it personally but at the end of the day this is a sports car with comfort being maybe a second thought to performance.

StormRune

The following images show excerpts from a book I have on the 997.2 changes. You can see that there were some made for comfort.

Bigbwb

Thanks for the great info folks! Rest assure, the turbo upgrade is not about the ride quality, that's just an added bonus

However you look at it, the 997.2 has many significant changes, most for the better.

nwGTS

Can someone show me the hydraulic bearing on the front control arm? ive never seen that and dont remember seeing when working on my suspension.

StormRune

Good question... I was curious about that too. It seems it may have been on models starting in 2006 if this article is correct.

http://www.gospecracing.com/forums/showthread.php?p=233

nwGTS

Okay, got it. Great info. Nice find. So it's in reference to that center 'puck'. But what is 'hydraulic' about it? There is liquid contained within that center bushing? That's the only way I could see it being called 'hydraulic' but I've never noticed any oil in that piece. Anybody else on here who can help out?

Edit: I hope this doesn't seem like I'm stealing the OPs thread. Just want to know the different in CA 'puck' b/w 997.1 and 997.2.

StormRune

After a bit more Googling around... here's my summary of the mostly scientific writings I see on the subject:

Hydraulic bushings contain fluid in channels and chambers within the bushing itself. Its not clear to me what this fluid is but I assume it is reasonably viscous like oil. The configurations and lengths of these channels and chambers can be tuned to dampen out certain frequencies that are deemed undesirable from a comfort/sound point-of-view, but at the same time can act fairly rigidly when exposed to other forces and pressures that could affect handling.

Here is a couple of sample sources of this info:
http://www.contitech.de/pages/produk...uchsen_en.html

https://www.deepdyve.com/lp/elsevier...ges-rXoeboMEdK

semicycler

Yup, fluid filled. Mine leaked a little over time, another wear item I supposed (2006 C2S). I used it as an excuse to upgrade to GT3 two-piece LCA's to get more negative camber up front. They also have a rubber puck instead of the hydraulic one.

malahhaor

What im understanding is if i have a set of shocks for 997 C4 they wont fit 997.2 C4?