Discussion
Digga said:
First Sea Lord said:
RSVP911 said:
Had a very successful afternoon today at Center Gravity as they sorted out the bumpy B road manners on my 992 GT3. Lots of chatter about the 992’s not being as good a road car as the 991.2. I can see how some might think this as the 992 is very “set up” sensitive. Mine has been fettled and is now, to me, just perfect - agile & very GT3 like, but it’s lost it’s overly firm / harsh skittish behaviour that was apparent on really poor road surfaces - cock on now on these types of roads & as nice in every way when compared to my 991.2 GT3. Big shout out to CG - I would highly recommend them to sort out your GT3’s if you have one that does this and it bothers you. Hope this helps 
That car looks just so right.Purple vein!
IREvans said:
RSVP911 said:
Had a very successful afternoon today at Center Gravity as they sorted out the bumpy B road manners on my 992 GT3. Lots of chatter about the 992’s not being as good a road car as the 991.2. I can see how some might think this as the 992 is very “set up” sensitive. Mine has been fettled and is now, to me, just perfect - agile & very GT3 like, but it’s lost it’s overly firm / harsh skittish behaviour that was apparent on really poor road surfaces - cock on now on these types of roads & as nice in every way when compared to my 991.2 GT3. Big shout out to CG - I would highly recommend them to sort out your GT3’s if you have one that does this and it bothers you. Hope this helps
Cool colour, is that Amethyst..?Out of curiosity, what geometry changes did they do, only toe and camber on the front axle..?
Ok, so this is going to be tricky for me as I’m not very technical but I will try and describe what’s was happening / has been done as best I can, but please bear with me
The issue as I understand it, was that individual wheels were so firmly sprung, that any shock caused by an uneven piece of road was not being soaked up in the damping and as such, was unsettling the whole car.
To solve this the ARB setting on all 4 corners were moved from the mid to the softer setting. However, I believe this softer setting is equivalent of the mid setting on the 991.2 GT3 (which is how my old car is set up). Also, the car is on Goodyear tyres and I am told that these are very sensitive to TP’s and have now been set lower at 29 on the front and 30 on the rear (apparently MPSC2’s are fine at the recommended setting.)
Also, the front cars castor wasn’t even on each side and was resulting in the car pulling to the right and again was destabilising the car on bumpy roads. To solve this and equalise the castor measurement a 1 mm shim was added on the drivers side.
All in all, I think the end result is the car is more compliant and less prone to that skittish / roller skate feeling when it is unsettled by uneven roads. As such, I now feel much more confident to press on as I fell like I’m in control of the car all the time, whereas before it could sometimes do things I wasn’t expecting.
I imagine it isn’t quite as agile when really pushing on, on a track but, in truth, my ability to drive at anything like 10/10th simply doesn’t exist and as such, I’m not sure that I’d notice. If I do, I can always put back on mid ARB setting for track days - but I think this would be unlikely. In the road it feels just as agile to me as it did before and no less agile than the 991.2 - hope that sort of helps ?
RSVP911 said:
IREvans said:
RSVP911 said:
Had a very successful afternoon today at Center Gravity as they sorted out the bumpy B road manners on my 992 GT3. Lots of chatter about the 992’s not being as good a road car as the 991.2. I can see how some might think this as the 992 is very “set up” sensitive. Mine has been fettled and is now, to me, just perfect - agile & very GT3 like, but it’s lost it’s overly firm / harsh skittish behaviour that was apparent on really poor road surfaces - cock on now on these types of roads & as nice in every way when compared to my 991.2 GT3. Big shout out to CG - I would highly recommend them to sort out your GT3’s if you have one that does this and it bothers you. Hope this helps
Cool colour, is that Amethyst..?Out of curiosity, what geometry changes did they do, only toe and camber on the front axle..?
Ok, so this is going to be tricky for me as I’m not very technical but I will try and describe what’s was happening / has been done as best I can, but please bear with me
The issue as I understand it, was that individual wheels were so firmly sprung, that any shock caused by an uneven piece of road was not being soaked up in the damping and as such, was unsettling the whole car.
To solve this the ARB setting on all 4 corners were moved from the mid to the softer setting. However, I believe this softer setting is equivalent of the mid setting on the 991.2 GT3 (which is how my old car is set up). Also, the car is on Goodyear tyres and I am told that these are very sensitive to TP’s and have now been set lower at 29 on the front and 30 on the rear (apparently MPSC2’s are fine at the recommended setting.)
Also, the front cars castor wasn’t even on each side and was resulting in the car pulling to the right and again was destabilising the car on bumpy roads. To solve this and equalise the castor measurement a 1 mm shim was added on the drivers side.
All in all, I think the end result is the car is more compliant and less prone to that skittish / roller skate feeling when it is unsettled by uneven roads. As such, I now feel much more confident to press on as I fell like I’m in control of the car all the time, whereas before it could sometimes do things I wasn’t expecting.
I imagine it isn’t quite as agile when really pushing on, on a track but, in truth, my ability to drive at anything like 10/10th simply doesn’t exist and as such, I’m not sure that I’d notice. If I do, I can always put back on mid ARB setting for track days - but I think this would be unlikely. In the road it feels just as agile to me as it did before and no less agile than the 991.2 - hope that sort of helps ?
TDT said:
993rsr said:
Shows how much a proper set up can do, tailored for what you intend to use the car for. A lot of these cars come badly set up from the factory, a good investment getting the geo properly done.
Yep… maybe the other thread should have a read here… Of course, 'some people' can have their cars setup right and still drive like the rear axle is entirely independent of the front. But that's another issue.
TDT said:
993rsr said:
Shows how much a proper set up can do, tailored for what you intend to use the car for. A lot of these cars come badly set up from the factory, a good investment getting the geo properly done.
Yep… maybe the other thread should have a read here… RSVP911 said:
TDT said:
993rsr said:
Shows how much a proper set up can do, tailored for what you intend to use the car for. A lot of these cars come badly set up from the factory, a good investment getting the geo properly done.
Yep… maybe the other thread should have a read here… 
Hey R… likewise nice to see also.
Lol. Yep.
The 992 GT3 Touring thread need to have a read of your last few contributions here to find out what a difference setup makes to a car.
Particularly acute from you as you have 991.2 also.
Look forward to seeing you at the March meet up if not before.
Lol. Yep.
The 992 GT3 Touring thread need to have a read of your last few contributions here to find out what a difference setup makes to a car.
Particularly acute from you as you have 991.2 also.
Look forward to seeing you at the March meet up if not before.
TDT said:
Hey R… likewise nice to see also.
Lol. Yep.
The 992 GT3 Touring thread need to have a read of your last few contributions here to find out what a difference setup makes to a car.
Particularly acute from you as you have 991.2 also.
Look forward to seeing you at the March meet up if not before.
It’s a date Lol. Yep.
The 992 GT3 Touring thread need to have a read of your last few contributions here to find out what a difference setup makes to a car.
Particularly acute from you as you have 991.2 also.
Look forward to seeing you at the March meet up if not before.
Feel free to send them this way Edited by RSVP911 on Friday 3rd February 14:39
In my long rambling set up comment - I referred to the Caster being out, resolved by adding a shim - I think, looking at the diagnostics I might mean Toe - possibly, maybe ?? Whatever it was, it was all about “building a stable front axel” apparently, sorry for the continued confusion 
Edited by RSVP911 on Friday 3rd February 14:35
RSVP911 said:
In my long rambling set up comment - I referred to the Caster being out, resolved by adding a shim - I think, looking at the diagnostics I might mean Toe - possibly, maybe ?? Whatever it was, it was all about “building a stable front axel” apparently, sorry for the continued confusion
Great to hear how Chris has got the car how you want it. Money very well spent Edited by RSVP911 on Friday 3rd February 14:35
Warning - TOTAL noob questions! How 'robust' are suspension settings once tuned?
Obviously, there are loads of variables but take this recent example, a 992 GT3 taken to a renowned specialist.
Presuming the driver adds say 5k miles a year, with weekends, the odd Europe trip and a few trackdays. Using the car as intended, but with mechanical sympathy.
For a car such as the 992 GT3 (which is sensitive to having the 'right' set up), how long until it needs to be checked and tuned again?
Obviously, there are loads of variables but take this recent example, a 992 GT3 taken to a renowned specialist.
Presuming the driver adds say 5k miles a year, with weekends, the odd Europe trip and a few trackdays. Using the car as intended, but with mechanical sympathy.
For a car such as the 992 GT3 (which is sensitive to having the 'right' set up), how long until it needs to be checked and tuned again?
CloudStuff said:
Warning - TOTAL noob questions! How 'robust' are suspension settings once tuned?
Obviously, there are loads of variables but take this recent example, a 992 GT3 taken to a renowned specialist.
Presuming the driver adds say 5k miles a year, with weekends, the odd Europe trip and a few trackdays. Using the car as intended, but with mechanical sympathy.
For a car such as the 992 GT3 (which is sensitive to having the 'right' set up), how long until it needs to be checked and tuned again?
Very, unless you are constantly bouncing on and off the curbs on track. If it's done well every 18 months to 2 years. You'll soon feel it if it's 'off'.Obviously, there are loads of variables but take this recent example, a 992 GT3 taken to a renowned specialist.
Presuming the driver adds say 5k miles a year, with weekends, the odd Europe trip and a few trackdays. Using the car as intended, but with mechanical sympathy.
For a car such as the 992 GT3 (which is sensitive to having the 'right' set up), how long until it needs to be checked and tuned again?
CloudStuff said:
Warning - TOTAL noob questions! How 'robust' are suspension settings once tuned?
Obviously, there are loads of variables but take this recent example, a 992 GT3 taken to a renowned specialist.
Presuming the driver adds say 5k miles a year, with weekends, the odd Europe trip and a few trackdays. Using the car as intended, but with mechanical sympathy.
For a car such as the 992 GT3 (which is sensitive to having the 'right' set up), how long until it needs to be checked and tuned again?
I can help here - I asked Chris if I should take back in 6-12 months to check all is well once the car has “settled” as it loosens up with milage - he said “no way” about 7k miles or when it obviously felt very different and then he’d like to see it again - hope this helps Obviously, there are loads of variables but take this recent example, a 992 GT3 taken to a renowned specialist.
Presuming the driver adds say 5k miles a year, with weekends, the odd Europe trip and a few trackdays. Using the car as intended, but with mechanical sympathy.
For a car such as the 992 GT3 (which is sensitive to having the 'right' set up), how long until it needs to be checked and tuned again?
RSVP911 said:
I can help here - I asked Chris if I should take back in 6-12 months to check all is well once the car has “settled” as it loosens up with milage - he said “no way” about 7k miles or when it obviously felt very different and then he’d like to see it again - hope this helps
I'd go back after 12 months just for a chat - he's a great guy!RSVP911 said:
In my long rambling set up comment - I referred to the Caster being out, resolved by adding a shim - I think, looking at the diagnostics I might mean Toe - possibly, maybe ?? Whatever it was, it was all about “building a stable front axle” apparently, sorry for the continued confusion
Hi R I hope you're well ?Possibly, but just as, if not more likely, to be shimming of the camber adjustment.
These : https://tarett.com/collections/control-arms-996/pr...
fit in between the two components arrowed in red here :
and arrowed in blue here :
Edited by Slippydiff on Friday 3rd February 19:22
Slippydiff said:
RSVP911 said:
In my long rambling set up comment - I referred to the Caster being out, resolved by adding a shim - I think, looking at the diagnostics I might mean Toe - possibly, maybe ?? Whatever it was, it was all about “building a stable front axle” apparently, sorry for the continued confusion
Hi R I hope you're well ?Possibly, but just as, if not more likely, to be shimming of the camber adjustment.
These : https://tarett.com/collections/control-arms-996/pr...
fit in between the two components arrowed in red here :
and arrowed in blue here :
Edited by Slippydiff on Friday 3rd February 19:22
RSVP911 said:
the car is more compliant and less prone to that skittish / roller skate feeling when it is unsettled by uneven roads. As such, I now feel much more confident to press on as I fell like I’m in control of the car all the time,
Mine is like this as it came from Porsche, just been thrashing it down some Mexican roads at speed and it soaks up mid corner dips and cambers in total control.... sounds like a few people got some bad eggs geo wise.Gassing Station | 911/Carrera GT | Top of Page | What's New | My Stuff