Prospective 981 GT4 Owners Discussion Forum.
Discussion
It's funny you say that Chris. I'm running a virtually stock geo (I do 15k road miles per year in it) on my 997 GTS but running Cup2's. I've done 3 pretty hard track days on them and there is no sign of roll over at front or rear. Even after pushing them to the point of going off.
I wonder if it is just a factor of the new Cups that is helping? Clearly a new construction.
I wonder if it is just a factor of the new Cups that is helping? Clearly a new construction.
Replies to various posts:
DARK BLUE METALLIC: Looks very classy, especially with the grey wheels. I originally narrowed my choice down to GT Silver and yellow, settling on yellow which I've been very happy with but if deciding now I would want to see the dark blue metallic.
FRONT SPLITTER SCRAPING: Have you tried crossing the gradient transitions at the most acute angle possible? It makes a huge difference.
DUNLOPS: Massive grip and good feel in the dry, sudden breakaway in the wet (just wet, not standing water), very fast wearing. Good ride, hard to judge noise without trying an alternative. Because of the wear rate, when they're finished I'lI try an alternative. Haven't decided whether Cup 2 or something a little less grippy such as PS2 or Corsa System (if approved by Porsche) to make it easier to play with the handling limits. Any thoughts?
DARK BLUE METALLIC: Looks very classy, especially with the grey wheels. I originally narrowed my choice down to GT Silver and yellow, settling on yellow which I've been very happy with but if deciding now I would want to see the dark blue metallic.
FRONT SPLITTER SCRAPING: Have you tried crossing the gradient transitions at the most acute angle possible? It makes a huge difference.
DUNLOPS: Massive grip and good feel in the dry, sudden breakaway in the wet (just wet, not standing water), very fast wearing. Good ride, hard to judge noise without trying an alternative. Because of the wear rate, when they're finished I'lI try an alternative. Haven't decided whether Cup 2 or something a little less grippy such as PS2 or Corsa System (if approved by Porsche) to make it easier to play with the handling limits. Any thoughts?
RSVP911 said:
Drive the 4 at the PEC today - lovely car , great fun - only complaint was it had a horrid , what I can only describe as a , "whirring" noise under acceleration - sounded like a turbo spooling up - very odd - other than this : lovely - think others have mentioned this noise on here (or have I imagined it ?) Does this happen to any owners cars ? 
+1 ref the noise. It gets right on my tits! RSVP911 said:
That looks very nice - congratulations - do you have any photos in normal daylight that you would be willing to post ? I was at SC today , Carl said your car looked great in the metal
thanks. no sorry i don't have any pictures. i will take a couple and post, but it might be a few weeks before i get a chance. 
ChrisW. said:
Useful information, I guess it's quite possible that the structure of the PSC2 is the difference ---
In any event 997 Cup toe links can be fitted for more geo --- it would be interesting to know the effect.
I run bespoke geo,toe links , RSS arms etc and cup 2's on my spyder and still scrub the fronts with -2 In any event 997 Cup toe links can be fitted for more geo --- it would be interesting to know the effect.
and I can scrub the pss on my R with -1.5 on the road !
So I cannot get my head around people not having issues with only -1 up front. ESP in that Spyder, saying that the p zero is a s
t track tyre and would never cope with more camber anyway.I would say when the owner of the 981 fits cup two,s that car will be crying out for more front neg camber.
I guess it depends if one is after a balanced car or lap times ! If you get my drift as a balanced car will give you a faster lap ofcourse :-)
You can tweak a cars geo on p zero to get a nice balanced drive, but you are never going to break and lap records on a p zero.
You add grip you add roll, you add roll and you need more camber or stiffer springs , stiffer arb etc
My gt4 is already on stiff rear arb over factory it just feels way better for me.
cymario said:
I love these seats, look fantastic and so comfortable
R
This image keeps loading upside down - this measurement is on the seat bum part :?NOT the back rest as it looks in the image - sorry for the confusion.
Edited by RSVP911 on Sunday 29th November 12:47
Edited by RSVP911 on Sunday 29th November 12:49
PorscheGT4 said:
ChrisW. said:
Useful information, I guess it's quite possible that the structure of the PSC2 is the difference ---
In any event 997 Cup toe links can be fitted for more geo --- it would be interesting to know the effect.
I run bespoke geo,toe links , RSS arms etc and cup 2's on my spyder and still scrub the fronts with -2 In any event 997 Cup toe links can be fitted for more geo --- it would be interesting to know the effect.
and I can scrub the pss on my R with -1.5 on the road !
Why aren't you on telly in that thing going on in Abu Dhabi? Shocking!
On the other hand it may be that you bespoke geo and setup isn't working too well. Maybe try tweaking something? My Cayman S on -2deg all round never rolled it's MPSS's
RSVP911 said:
rk123 said:
![](http://thumbsnap.com/sc/OwWNNK4Y.jpg[/img]</a> <a href="http://thumbsnap.com/EZ7vo1ox" Target="_blank" rel="nofollow">[img]http://thumbsnap.com/sc/EZ7vo1ox.jpg)
jackwood said:
Wow! You must be so FAST!
Why aren't you on telly in that thing going on in Abu Dhabi? Shocking!
On the other hand it may be that you bespoke geo and setup isn't working too well. Maybe try tweaking something? My Cayman S on -2deg all round never rolled it's MPSS's
fast is subjective :-) I just do the odd track day for fun and I am 2 to 3 seconds off a pro's lap hence I do I.T and am not paid to race cars !Why aren't you on telly in that thing going on in Abu Dhabi? Shocking!
On the other hand it may be that you bespoke geo and setup isn't working too well. Maybe try tweaking something? My Cayman S on -2deg all round never rolled it's MPSS's
But I would have put the soft tyre on my car for the last 15 laps at Abu Dhabi mind you and see what happened rather than sitting in a safe 2nd place !
did you have KW in your Cayman ? or PSS9 or some thing not stock but stiffer ? or after market ARB's that would be the only way to make -2 100% work imo.
As for only having -1 up front in all these cars, forget it imo, but it is only that my opinion ;-)
GaryF said:
For those that own one, does the DBM really look like this in real life? i.e. that it is clearly blue? I also posted some pics where the blue shines through but they were in tge sun/enhanced.
No, strangely it looks pink in the sunshine. Yes, of course it does and in fact looks even better! These pictures were taken(not very well) on a 18mp SLR camera. No editing has been done, other resizing so that i could upload them. IMO it looks amazing. But as i understand it this colour is no longer available for Cayman or Macan. It was taken off the list about a month ago so if you were considering it, i'm afraid you have missed out!!PorscheGT4 said:
jackwood said:
Wow! You must be so FAST!
Why aren't you on telly in that thing going on in Abu Dhabi? Shocking!
On the other hand it may be that you bespoke geo and setup isn't working too well. Maybe try tweaking something? My Cayman S on -2deg all round never rolled it's MPSS's
fast is subjective :-) I just do the odd track day for fun and I am 2 to 3 seconds off a pro's lap hence I do I.T and am not paid to race cars !Why aren't you on telly in that thing going on in Abu Dhabi? Shocking!
On the other hand it may be that you bespoke geo and setup isn't working too well. Maybe try tweaking something? My Cayman S on -2deg all round never rolled it's MPSS's
But I would have put the soft tyre on my car for the last 15 laps at Abu Dhabi mind you and see what happened rather than sitting in a safe 2nd place !
did you have KW in your Cayman ? or PSS9 or some thing not stock but stiffer ? or after market ARB's that would be the only way to make -2 100% work imo.
As for only having -1 up front in all these cars, forget it imo, but it is only that my opinion ;-)
Yes, I would have stuck the SS's on too! Very boring decision by Mercedes.
It had stock ARB's but PSS10's.
Certainly sounds like you need to be upgrading the ARB's on your cars. Cheaper than the other option of doing the dampers.
RSVP911 said:
Loving your GT4 - nearly as much as your immaculate garage ! I wonder if you could help me - I am about to go to spec lock down on my Spyder and I need to see if my child's booster seat fits in the buckets - I have ordered the same buckets as you as I want them to be heated. I know it fits (just) in the 918 buckets . (wife banned me from these though as they are not heated) and I assumed they'd be fine in yours but thought I'd better check - would it be possible for you to measure your seats in the two places shown as per the photos below - I know this is a pain and I would completely understand if you ignored this request - but if you can be arsed , I'd really appreciate it as its lock down D day tomorrow , cheers ,
R
This image keeps loading upside down - this measurement is on the seat bum part :?NOT the back rest as it looks in the image - sorry for the confusion.
Sorted - had confirmation that the measurement at the 2 points are identical - please "stand down"
R
This image keeps loading upside down - this measurement is on the seat bum part :?NOT the back rest as it looks in the image - sorry for the confusion.
Edited by RSVP911 on Sunday 29th November 12:47
Sorted - had confirmation that the measurement at the 2 points are identical - please "stand down"
Edited by RSVP911 on Sunday 29th November 12:49
jackwood said:
I think we are all more than 2-3 seconds off a pro lap, lol. Unless it was a circa 40s lap to start with
Yes, I would have stuck the SS's on too! Very boring decision by Mercedes.
It had stock ARB's but PSS10's.
Certainly sounds like you need to be upgrading the ARB's on your cars. Cheaper than the other option of doing the dampers.
that's the issue with road cars VS race cars how hard does one want a road car set up when you use it 96% on the road and just do 3 track days a year.Yes, I would have stuck the SS's on too! Very boring decision by Mercedes.
It had stock ARB's but PSS10's.
Certainly sounds like you need to be upgrading the ARB's on your cars. Cheaper than the other option of doing the dampers.
I have been out and had training with 3 pro racers from GT current racers to touring car drivers, was about 3 seconds off the pace in my cars vs a pro in my car, I thought 3 seconds was quite a lot esp when you are trying to find another 3 seconds and can only get another 1/10th when you know the car can do it lol
I think if I were to be 5 seconds off the pace I wouldn't bother, I am happy with my current speed, just not happy with final car settings, as small adjustments is not possible.
when I tracked my Exige with 3 way ohlins, I could fine tune with bump and rebound, on a Porker it's all about the geo and you just cannot add a 1/4 degree here or there wet or dry track etc.
My cars could go a bit faster (as could I), but one cannot do the changes track side or spend enough time in them to hone them in how I would like, the Spyders a bit loose at the rear atm !
but that prob won't see a track day again now the GT4 is here, now a summer show and week end car. just what to do with the GT4 to fit how I drive.
on the plus side we should see way more GT4 on track and people can swap info, I was pretty much alone doing my Spyder set ups, it's prob a 1 off with the parts it has world wide let alone the UK.
They are what they are, a bit of fun away from the mundane work life.
Edited by PorscheGT4 on Sunday 29th November 16:31
PorscheGT4 said:
fast is subjective :-) I just do the odd track day for fun and I am 2 to 3 seconds off a pro's lap hence I do I.T and am not paid to race cars !
Sure you are, 2 to 3 seconds hahahaha!!! Anyway, thought you sold the GT4, oh no, hang on, that must have been the other you, the one that drives an Audi TT!Yes it's all just good fun and escapism. None of us are racers, at least not racing these cars...
It will be interesting to see how things go down the line when these are on track next year. The Americans are already at it and the standard recognised track setup (see Rennlist for the exact geo numbers, but something like -2 all round and some toe adjustments front and rear) seems to work for most.
Of course there is always those for whom a standard setup doesn't work. But that's the beauty of these cars. You can tweak them as and when you want.
What is going to be interesting to see is how Porsche handle the addition of toe links on these cars. I still can't understand why they would build and sell a GT product that is hamstrung in terms of getting decent track geo by the fact there isn't enough toe adjustment to get the requesit camber adjustment.
It will be interesting to see how things go down the line when these are on track next year. The Americans are already at it and the standard recognised track setup (see Rennlist for the exact geo numbers, but something like -2 all round and some toe adjustments front and rear) seems to work for most.
Of course there is always those for whom a standard setup doesn't work. But that's the beauty of these cars. You can tweak them as and when you want.
What is going to be interesting to see is how Porsche handle the addition of toe links on these cars. I still can't understand why they would build and sell a GT product that is hamstrung in terms of getting decent track geo by the fact there isn't enough toe adjustment to get the requesit camber adjustment.
mdianuk said:
Sure you are, 2 to 3 seconds hahahaha!!! Anyway, thought you sold the GT4, oh no, hang on, that must have been the other you, the one that drives an Audi TT!
I never said I sold it ! , some one thinks I have because I bought a TTS and that's how nasty rumors start and all the nasty flipper comments, not that it bothers me, hence I played on it a week or 2 for my own amusement!! def brought out a few nasty bds !!!I have 4 cars, does not mean I sold my GT4, I did sell my R which was a shame, but running an R as a winter hack when I own a GT4 and Spyder seems daft so I have a 4WD TTS as a work hack, and it's a nice place to be with 4WD, heated seats and xenons these winter nights.
As for lap times, people think what they think, I am mr slow and a s
t driver seems common, people have always said that, it's up to them what they post, but I record all my track days, and it's interesting to see who is fast and who is not when looking at them, I tend not to post them these days unless some one really pisses me off on track, then I'll post a vid may be if push came to shove, I have some corkers.you tend to find the all shouters don't do track days though or will NOT goto a how fast event !!! funny that ;-) the track guys normally are a great bunch and it's great to learn new stuff and tips going out with others and times don't mean anything, we are just having fun, I have many friends who I see on most days I go to.
new hack, as the ST is a bit wearing at times.
Edited by PorscheGT4 on Sunday 29th November 17:34
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