Looking for PN # for GT3 and GT3 RS Springs
#1
Rennlist Member
Thread Starter
Join Date: Nov 2002
Location: Between rock and hard place
Posts: 3,718
Received 1,120 Likes
on
620 Posts
![Question](https://rennlist.com/forums/images/icons/icon5.gif)
I am looking for the part numbers for the GT3 RS front springs and the number for the rear springs. Are both front and rear different than the Standard GT3?
Also anyone have a picture or diagram of the front springs.
Thanks,
Also anyone have a picture or diagram of the front springs.
Thanks,
![Cheers](https://rennlist.com/forums/images/smilies/beerchug.gif)
#2
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by cosmos
I am looking for the part numbers for the GT3 RS front springs and the number for the rear springs. Are both front and rear different than the Standard GT3? Also anyone have a picture or diagram of the front springs.
GT3RS Front Spring: 996.343.531.97.504
GT3 & GT3RS Rear Spring: 996.333.531.95.504
#6
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I think Cos is onto something here. The MKII front spring rate is 228lbs, rear 540. Thats a very large differential which could be one of the causes of the 'porpoising' phenomenon on bumpy roads, overall bumpy road instability, and understeer. Besides, it's not an expensive experiment, if it fails.
Robin
Robin
Trending Topics
#8
Keeper of the Truth
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by gtdrei
The MKII front spring rate is 228lbs, rear 540.
#9
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Viken,
Porsche Club Panorama 9/03. Front 40 N/mm linear springs, Rear 95 n/mm progressive springs. Based on my math, which has never been good, and some help from a few conversion sites, the formula is n/mm X 5.71=ft/lbs. Which delivers the results I posted. Let me know if i'm wrong.
BTW, the same article claimed spring rates for the Cup car as Front 240 N/mm with 60N/mm helpers and Rear 260 N/mm with 60mm helpers. (no progressive springs )
Robin
Porsche Club Panorama 9/03. Front 40 N/mm linear springs, Rear 95 n/mm progressive springs. Based on my math, which has never been good, and some help from a few conversion sites, the formula is n/mm X 5.71=ft/lbs. Which delivers the results I posted. Let me know if i'm wrong.
BTW, the same article claimed spring rates for the Cup car as Front 240 N/mm with 60N/mm helpers and Rear 260 N/mm with 60mm helpers. (no progressive springs )
Robin
#10
Rennlist Member
Thread Starter
Join Date: Nov 2002
Location: Between rock and hard place
Posts: 3,718
Received 1,120 Likes
on
620 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Yes, you are correct, however there is enough adjustablity in the swaybars to rid the car of whatever understeer the stiffening of the front may cause. The sways can not fix the rebound or compression that can IMO be fixed by stiffer springs.
The car has serious front end issues and stiffer front spings are the only way to cure those issues.
The car has serious front end issues and stiffer front spings are the only way to cure those issues.
![thumbup](https://rennlist.com/forums/graemlins/thumbup.gif)
#11
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Sorry, my bad, the conversion is N/mm to lbs/inch. The factor used here and some other places was N/mm X 5.7 = lbs/in. Here's one of the sites I enlisted for help
Spring Conversions
Spring Conversions
![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
#12
Drifting
Join Date: Feb 2002
Location: Kuwait & Sweden
Posts: 2,057
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I would have thought that Porsche would have sorted any such issues, perhaps your car just needs a proper wheel allignment and corner balance.
It get's very scientific the day you start playing around with the GT3 chassi components (trust me, I know) and the end result might not be any better and you will find that the stock components work best but with a more track oriented chassi set-up. = all expensive parts in the bin.
I would personally not go down the route of changing chassi components unless the car spends 99% of it's time on a track and is being trailered to and from the track.
Ciao,
Johannes E.
It get's very scientific the day you start playing around with the GT3 chassi components (trust me, I know) and the end result might not be any better and you will find that the stock components work best but with a more track oriented chassi set-up. = all expensive parts in the bin.
I would personally not go down the route of changing chassi components unless the car spends 99% of it's time on a track and is being trailered to and from the track.
Ciao,
Johannes E.
#14
Addict
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Originally Posted by Biker
What about the 05 GT3, which is has softer springs (in the USA), are these cars equipped with different shocks?
Whats with the softer springs on the 05 GT3 for the USA? I had not heard that one before...
![Confused](https://rennlist.com/forums/images/smilies/confused.gif)
#15
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
What about the 05 GT3, which is has softer springs (in the USA), are these cars equipped with different shocks?
Robin