Cayman GT4: Where are we up to now?
- Thread starter Motorhead
- Start date
Update on the running-in period ... which is just about complete. Did the Oulton Park Trackday on the 4th. It was wet early in the day and then dried out, giving the car an easy morning and a busier afternoon. This was the data at the end of the day --- with no "offs" --- or understeer. Despite the maxed out negative camber at the rear the whole car is clearly set-up very nicely with no significant shoulder wear on the tyres --- either front or back. I'm therefore unsure how much extra camber it needs ...
Front -1 degree 36', with 02' each side of toe in.
Rear -1 degree 18', with 10' each side of toe out.
I would need 997 GT3 Cup rear toe links to get more rear camber and retain the toe, but as I say, I'm not sure if it's required.
The tyre wear appears to have been very even but it would have been interesting to look at the tyre temperatures across the tread width.
From standard tyre pressures I took out 10 psi and at their hottest both front and rear came up to 35 psi at which the car was starting to move around a little more.
I would normaly run at 30psi hot all round and drop pressures if they run much above 32psi.
Rear -1 degree 18', with 10' each side of toe out.
I would need 997 GT3 Cup rear toe links to get more rear camber and retain the toe, but as I say, I'm not sure if it's required.
The tyre wear appears to have been very even but it would have been interesting to look at the tyre temperatures across the tread width.
From standard tyre pressures I took out 10 psi and at their hottest both front and rear came up to 35 psi at which the car was starting to move around a little more.
I would normaly run at 30psi hot all round and drop pressures if they run much above 32psi.
Steve Brookes
Moderator
Chris had a lot of people eager to get in the passenger seat in the afternoon. Andy Fagan being one. Andy knows a thing or two about driving Caymans fast and was mightily impressed with the performance of Chris' GT4.
I managed to blag the last couple of laps (literally) in the passenger seat before the circuit closed. The track was at its driest and Chris was on it for those laps. To me it felt like a hard core version of his previous R with even more front end bite - the car can carry serious speed into corners. I don't think I've been in a car that had so much grip through Island bend (a big balls turn for those that know it). The ceramic brakes are staggering in the way that they can scrub off the speed. But most memorable of all is the howl of the engine behind your head....it's not far behind the aural splendor of the old Mezger lump that was in the previous GT3s.
It's one hell of a car for having fun on track. [8D]
I managed to blag the last couple of laps (literally) in the passenger seat before the circuit closed. The track was at its driest and Chris was on it for those laps. To me it felt like a hard core version of his previous R with even more front end bite - the car can carry serious speed into corners. I don't think I've been in a car that had so much grip through Island bend (a big balls turn for those that know it). The ceramic brakes are staggering in the way that they can scrub off the speed. But most memorable of all is the howl of the engine behind your head....it's not far behind the aural splendor of the old Mezger lump that was in the previous GT3s.
It's one hell of a car for having fun on track. [8D]
Selecting “Circuits” in the TPMS menu
For driving on a race circuit, you can set and
monitor pressures different to those used for road
mode.
Race circuit mode is not designed for driving on
public roads.
This gives the experienced driver the option of
customising tire pressure to suit race circuits, for
optimum handling.Set the desired actual tire pressure for race
circuits at the wheel.
The actual tire pressures are updated in the
“Circuits” display every 5 seconds for a
maximum of 15 minutes
Good to hear that the new cars are making their presence felt already on track days.
For those who've not yet noticed, both bucket seat options as well as the black rear wing supports have been back on the Configurator for a few days now.
Who knows why Porsche just can't leave the Configuator alone? Maybe the person in charge of the site is anxious about their job and likes to make it appear to the boss that they're doing something....
Jeff
For those who've not yet noticed, both bucket seat options as well as the black rear wing supports have been back on the Configurator for a few days now.
Who knows why Porsche just can't leave the Configuator alone? Maybe the person in charge of the site is anxious about their job and likes to make it appear to the boss that they're doing something....
Jeff
Image of the interior of the Clubsport from ppf.de thread [link=http://www.pff.de/porsche/index.php?thread/2764101-cayman-gt4-clubsport/&s=bc2e3e3f63b350a66d28ca0f70cefbbc474e83d3]Cayman GT4 Clubsport[/link]
For the track day enthusiasts, this rennlist thread may be of interest..
[link=http://rennlist.com/forums/gt4/898226-report-on-toe-links-alignment-aftermarket-air-filters-and-headers.html]http://rennlist.com/forum...lters-and-headers.html[/link]
[link=http://rennlist.com/forums/gt4/898226-report-on-toe-links-alignment-aftermarket-air-filters-and-headers.html]http://rennlist.com/forum...lters-and-headers.html[/link]
flat6 said:
Not impossible of course which is why I quoted source. Let's see what appears for LA show on the 20th..
(Edit) Given the Clubsport can be run in only a few series mostly perhaps in the USA I wonder if this version is just aimed at some race halo effect and USA Cayman racing/track days in particular, maybe also a toe in the water for a proper FIA race series car later?
Ralph,
Someone's posted elsewhere that because the Clubsport half-cage doesn't include any cross-bracing (unlike that in the GT3) it can't even be used for club racing in the UK (??). I have to say that to me it just looks like an open roll-hoop with two trailing struts incorporating a cross-piece - a rather flimsy affair - which doesn't even incorporate any harness anchorage points.
Jeff
Someone's posted elsewhere that because the Clubsport half-cage doesn't include any cross-bracing (unlike that in the GT3) it can't even be used for club racing in the UK (??). I have to say that to me it just looks like an open roll-hoop with two trailing struts incorporating a cross-piece - a rather flimsy affair - which doesn't even incorporate any harness anchorage points.
Jeff
To Quote Road and Track [Edits]
Upgrades to the Clubsport [Race Version not to be confused with the Clubsport option for the GT4] over the GT4 apparently include a PDK gearbox, 911 GT3 Cup car front suspension, beefed up brakes, a welded-in roll cage, a six-point racing harness, and the removal of excess weight like the passenger seat. A larger fuel tank, and a fire suppression system will be available, as well. Automobile [/i]also reports that several other factory options will be available. Air jacks should set you back $4,200, Recaro bucket seats another $3,900, and a package of replacement parts such as bumpers, brakes, and wheels close to $10,000
Unquote
So the Clubsport Race Version will have a full welded in cage but would it be eligible for any UK race series?
Upgrades to the Clubsport [Race Version not to be confused with the Clubsport option for the GT4] over the GT4 apparently include a PDK gearbox, 911 GT3 Cup car front suspension, beefed up brakes, a welded-in roll cage, a six-point racing harness, and the removal of excess weight like the passenger seat. A larger fuel tank, and a fire suppression system will be available, as well. Automobile [/i]also reports that several other factory options will be available. Air jacks should set you back $4,200, Recaro bucket seats another $3,900, and a package of replacement parts such as bumpers, brakes, and wheels close to $10,000
Unquote
So the Clubsport Race Version will have a full welded in cage but would it be eligible for any UK race series?
Just Locked in GT4 Spec ... Cant wait - just need to learn how to Drive now .. 
G1: Guards Red
68: Black Leather and Stitching in Guards Red
802: Rear Wing supports in Black
620: PDLS Lights system
XYB: Aluminium Fuel Cap
643: Sports Chrono Package
085: 64 Litre Fuel Tank
XDK: Wheels Painted Satin Black
003: Club Sport Package
750: Stitching in Contrasting Colour
454: Cruise Control
630: Light Design Package
P11: Full Carbon Fibre Bucket Seats
583: Smokers Package
CPK: Vehicle key Painted
XSX: Guards Red Seat Belts
CPE: Key Pouch in Leather
XLJ: Storage Compartment in Alcantara
XLU: Sun Visors in Alcantara
EGA: Carbon Interior Package
XHM: Centre Consul in Carbon
P23: PCM with Sound Package
666: Telephone module
UNI: Online services
691: Digital Radio
G1: Guards Red
68: Black Leather and Stitching in Guards Red
802: Rear Wing supports in Black
620: PDLS Lights system
XYB: Aluminium Fuel Cap
643: Sports Chrono Package
085: 64 Litre Fuel Tank
XDK: Wheels Painted Satin Black
003: Club Sport Package
750: Stitching in Contrasting Colour
454: Cruise Control
630: Light Design Package
P11: Full Carbon Fibre Bucket Seats
583: Smokers Package
CPK: Vehicle key Painted
XSX: Guards Red Seat Belts
CPE: Key Pouch in Leather
XLJ: Storage Compartment in Alcantara
XLU: Sun Visors in Alcantara
EGA: Carbon Interior Package
XHM: Centre Consul in Carbon
P23: PCM with Sound Package
666: Telephone module
UNI: Online services
691: Digital Radio
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