GT2RS Delivery Pics
02-08-2011, 04:15 AM
#91
Rennlist Member
I think the 997 gt2 also came with an Akra system if I recall correctly. It probably has more to do with the fact that the Akra are generally a louder system but 'turbos' tend to quitten loud exhausts and they can get away with it with the turbo variants... I'd say that the Akra would have featured on the 3RS also except that it would probably be virtually impossible to get it quite enough to meet worldwide noise requirements...
CGT, they would have stung everybody another $10k for that piece to be titanium... and more importantly, you need somewhere to attach a magnetic key holder with your spare 
02-08-2011, 08:25 AM
#92
Burning Brakes
Join Date: Oct 2008
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WOWZERS!!!! Killer thread with tons of cool info! Thanks for your info and congrats on the experience!!! I will have to finish reading this thread later today when I have more time. Interesting to hear all the info they knew about you and that they follow the forums like they do. Smart on their part as there sure are enough enthusiasts here.
What an experience!
What an experience!
02-08-2011, 08:31 AM
#93
Addict
Rennlist Member
Rennlist Member
Many thanks for sharing your experience.
Same as GT2 although different carbon ducting on new RS bumper ?
Exact same as GT2 ? isn't the back pressure a problem, how do the EGTs fare with 1.6bar and 600cell cats or are they different ?
Doesn't GT2 also have this ?
Documented in bumph
Is this different ducting to regular GT2 ? If yes did he discuss how this works with RS aerodynamics in giving the downforce numbers ? Did he reflect on the 0.35 Cd increase over the 0.32 of the GT2 ?
We knew this stuff I think ?
Cumon spill the real juice
Same as GT2 although different carbon ducting on new RS bumper ?
Exact same as GT2 ? isn't the back pressure a problem, how do the EGTs fare with 1.6bar and 600cell cats or are they different ?
Documented in bumph
Is this different ducting to regular GT2 ? If yes did he discuss how this works with RS aerodynamics in giving the downforce numbers ? Did he reflect on the 0.35 Cd increase over the 0.32 of the GT2 ?
Cumon spill the real juice
02-08-2011, 10:58 AM
#94
If it is a kw suspension, kw historically runs a much larger front rear spring rate differential (ie 300f, 900r) than Porsche has ever used. If you search the kw site you can see they have done this for a long time on almost all 911s. This alone would be worth taking a much closer look at on the new 2RSs. Porsche has been steadily increasing the spring rates on the gt3 so can the owners take a look at the new 2RSs and see if the springs have details on them?
02-08-2011, 12:05 PM
#95
Drifting
Thread Starter
That's a great win for Akro.
Is that a steel brace under the nose?
Is that clamp bolt bent?
After all that Ti, they still use those donkey kong steel band clamps ... keep saying "it's a light weight special ... it's a light weight special ..."
: )
... but come on ... where's the close-up photos of the coolant and power steering fittings ... : )
Is that a steel brace under the nose?
Is that clamp bolt bent?
After all that Ti, they still use those donkey kong steel band clamps ... keep saying "it's a light weight special ... it's a light weight special ..."
: )
... but come on ... where's the close-up photos of the coolant and power steering fittings ... : )
WOWZERS!!!! Killer thread with tons of cool info! Thanks for your info and congrats on the experience!!! I will have to finish reading this thread later today when I have more time. Interesting to hear all the info they knew about you and that they follow the forums like they do. Smart on their part as there sure are enough enthusiasts here.
What an experience!
What an experience!
Many thanks for sharing your experience.
You are welcome of course.
Same as GT2 although different carbon ducting on new RS bumper ?
Any GT2 owners can chime in? I don't know?
Exact same as GT2 ? I think so. isn't the back pressure a problem, how do the EGTs fare with 1.6bar and 600cell cats or are they different ?
Andreas said the high cell cats definitely rob power. But emissions laws force the restrictive cats. No surprise for many of us
Powerband looks essentially identical to GT2 except for massive gains in the upper rpm ranges. Upper 2000-2500 as I recall.
Doesn't GT2 also have this ?
GT2 owner?
Documented in bumph
Yep.
Is this different ducting to regular GT2 ? If yes did he discuss how this works with RS aerodynamics in giving the downforce numbers ? Did he reflect on the 0.35 Cd increase over the 0.32 of the GT2 ?
Haha, you are asking all the right questions, but again I don't know answer on the ducting. GT2 owners? He went into some detail in a presentation how they worked on downforce and balanced F/R dwonforce and that very minor change can drastically raise Cd.
As I recall at 120 mph it has 120 lbs of down force increasing to 400 lbs of down force at top speed.
We knew this stuff I think ?
Cumon spill the real juice
I am surely forgetting things. Ask and if I know I will answer
You are welcome of course.
Same as GT2 although different carbon ducting on new RS bumper ?
Any GT2 owners can chime in? I don't know?
Exact same as GT2 ? I think so. isn't the back pressure a problem, how do the EGTs fare with 1.6bar and 600cell cats or are they different ?
Andreas said the high cell cats definitely rob power. But emissions laws force the restrictive cats. No surprise for many of us
Powerband looks essentially identical to GT2 except for massive gains in the upper rpm ranges. Upper 2000-2500 as I recall. Doesn't GT2 also have this ?
GT2 owner?
Documented in bumph
Yep.
Is this different ducting to regular GT2 ? If yes did he discuss how this works with RS aerodynamics in giving the downforce numbers ? Did he reflect on the 0.35 Cd increase over the 0.32 of the GT2 ?
Haha, you are asking all the right questions, but again I don't know answer on the ducting. GT2 owners? He went into some detail in a presentation how they worked on downforce and balanced F/R dwonforce and that very minor change can drastically raise Cd.
As I recall at 120 mph it has 120 lbs of down force increasing to 400 lbs of down force at top speed.
We knew this stuff I think ?
Cumon spill the real juice
I am surely forgetting things. Ask and if I know I will answer
If it is a kw suspension, kw historically runs a much larger front rear spring rate differential (ie 300f, 900r) than Porsche has ever used. If you search the kw site you can see they have done this for a long time on almost all 911s. This alone would be worth taking a much closer look at on the new 2RSs. Porsche has been steadily increasing the spring rates on the gt3 so can the owners take a look at the new 2RSs and see if the springs have details on them?
Last edited by savyboy; 02-08-2011 at 01:03 PM. Reason: fixed bar
02-08-2011, 12:11 PM
#96
Cumon spill the real juice
02-08-2011, 12:24 PM
#97
Addict
Rennlist Member
Rennlist Member
Great stuff 
It is supposed to be 1.6bar boost not 1.4bar ?
Very interesting re the cats and emissions, that must really upset the engineers as those stock cats are a menace for this cars engine. My pal who has a GT2RS in the UK took a set of Cargraphic 200 cell cats which I had, they make a big difference, and sound awesome as well as keeping the temps down and CEL off.
I will take a look at that ducting, personally I am not after more downforce for my Road GT2 but I know of a few owners who want the RS's aero !
Did he say anything specific about engine differences ? We know it has a plastic intake but that is the same dimension as GT2 so that is a weight saver ? He mentioned before about pistons and rods, did he elaborate ? are they different parts or just blueprinted in terms of weights ? Are the turbos the same as GT2 ?
I posted quite a while ago that Porsche engineers (so presumably Preuninger et al) were testing heavilythe 3.8dfi motor for RS fitment but could get the reliability they wanted so the Mezger lump becomes the "Motorsport" engine !!! love it
Did he explain any differences in the gearbox, SA say the ratios and final drive are the same ? maybe it has the short shifter ?
The suspension is still PASM (which is Bilsteins') isn't it so are those new shocks Bilstein with KW springing
Did he expalin anything further about the tyres ?
Many thanks
It is supposed to be 1.6bar boost not 1.4bar ?
Very interesting re the cats and emissions, that must really upset the engineers as those stock cats are a menace for this cars engine. My pal who has a GT2RS in the UK took a set of Cargraphic 200 cell cats which I had, they make a big difference, and sound awesome as well as keeping the temps down and CEL off.
I will take a look at that ducting, personally I am not after more downforce for my Road GT2 but I know of a few owners who want the RS's aero !
Did he say anything specific about engine differences ? We know it has a plastic intake but that is the same dimension as GT2 so that is a weight saver ? He mentioned before about pistons and rods, did he elaborate ? are they different parts or just blueprinted in terms of weights ? Are the turbos the same as GT2 ?
I posted quite a while ago that Porsche engineers (so presumably Preuninger et al) were testing heavilythe 3.8dfi motor for RS fitment but could get the reliability they wanted so the Mezger lump becomes the "Motorsport" engine !!! love it
Did he explain any differences in the gearbox, SA say the ratios and final drive are the same ? maybe it has the short shifter ?
The suspension is still PASM (which is Bilsteins') isn't it so are those new shocks Bilstein with KW springing
Did he expalin anything further about the tyres ?
Many thanks
02-08-2011, 01:02 PM
#98
Drifting
Thread Starter
Anyhow, on the hoist, yes, that was yesterday, right after getting home...lol
Oh- the problem with the CEL was that the "Transmission Cooler Temperature Control Solenoid" vacuum hose elbow came loose. The engine was running too cool, the ECU found the Oil/Coolant temps readings to be "implausible", and tossed me a CEL. My tech reconnected the vacuum line and voila' it all works properly. He said the hose was in a physical (as opposed to temporal) location that allow it to be easily knocked loose at various points of the manufacturing process.
Great stuff
It is supposed to be 1.6bar boost not 1.4bar ?
My bad, sorry, 1.6 bar is correct.
Very interesting re the cats and emissions, that must really upset the engineers as those stock cats are a menace for this cars engine. My pal who has a GT2RS in the UK took a set of Cargraphic 200 cell cats which I had, they make a big difference, and sound awesome as well as keeping the temps down and CEL off.
Agreed- Uncorking a turbo engine is always a happy thing as opposed to a N/A engine where it may hurt low-end tq.
Did he say anything specific about engine differences ? We know it has a plastic intake but that is the same dimension as GT2 so that is a weight saver ? He mentioned before about pistons and rods, did he elaborate ? are they different parts or just blueprinted in terms of weights ? Are the turbos the same as GT2 ?
Intake is an "expansion intake", info on the GT2RS microsite. During testing the increased power was bending connecting rods (losing parellelism). So rods were upgraded. Turbos same, intercoolers are much more efficient.
Did he explain any differences in the gearbox, SA say the ratios and final drive are the same ? maybe it has the short shifter ?
No short shifter unless you consider a .2 GT3RS a short shifter. Shifters are the same. It is a good shifter and feels great. Given I got 24mpg avg driving home so I don't think the gearbox is the RS short ratio one. In my 3RS I get approx 18-19mpg hwy mileage.
The suspension is still PASM (which is Bilsteins') isn't it so are those new shocks Bilstein with KW springing
It is PASM. Let me look at the shocks (dampers to my ROW friends) and I will follow-up.
Did he expalin anything further about the tyres ?
Fronts are standard N1 tires same as GT3RS. The rear N2 is totally different construction than the N1 used on GT3RS. Different tread, different carcass, different sidewalls, and even though it is same size it is physically wider and offers a slightly larger contact patch. He said it was roughly equivalent to a 330. Tolerance allows the size difference while still being officially a 325. Could be used on a 3RS but because of better traction, would move handling towards more understeer.
Many thanks
It is supposed to be 1.6bar boost not 1.4bar ?
My bad, sorry, 1.6 bar is correct.
Very interesting re the cats and emissions, that must really upset the engineers as those stock cats are a menace for this cars engine. My pal who has a GT2RS in the UK took a set of Cargraphic 200 cell cats which I had, they make a big difference, and sound awesome as well as keeping the temps down and CEL off.
Agreed- Uncorking a turbo engine is always a happy thing as opposed to a N/A engine where it may hurt low-end tq.
Did he say anything specific about engine differences ? We know it has a plastic intake but that is the same dimension as GT2 so that is a weight saver ? He mentioned before about pistons and rods, did he elaborate ? are they different parts or just blueprinted in terms of weights ? Are the turbos the same as GT2 ?
Intake is an "expansion intake", info on the GT2RS microsite. During testing the increased power was bending connecting rods (losing parellelism). So rods were upgraded. Turbos same, intercoolers are much more efficient.
Did he explain any differences in the gearbox, SA say the ratios and final drive are the same ? maybe it has the short shifter ?
No short shifter unless you consider a .2 GT3RS a short shifter. Shifters are the same. It is a good shifter and feels great. Given I got 24mpg avg driving home so I don't think the gearbox is the RS short ratio one. In my 3RS I get approx 18-19mpg hwy mileage.
The suspension is still PASM (which is Bilsteins') isn't it so are those new shocks Bilstein with KW springing
It is PASM. Let me look at the shocks (dampers to my ROW friends) and I will follow-up.
Did he expalin anything further about the tyres ?
Fronts are standard N1 tires same as GT3RS. The rear N2 is totally different construction than the N1 used on GT3RS. Different tread, different carcass, different sidewalls, and even though it is same size it is physically wider and offers a slightly larger contact patch. He said it was roughly equivalent to a 330. Tolerance allows the size difference while still being officially a 325. Could be used on a 3RS but because of better traction, would move handling towards more understeer.
Many thanks
Last edited by savyboy; 02-08-2011 at 11:48 PM. Reason: fix spelling
02-08-2011, 01:21 PM
#99
Nordschleife Master
Fronts are standard N1 tires same as GT3RS. The rear N2 is totally different construction than the N1 used on GT3RS. Different tread, different carcass, different sidewalls, and even though it is same size it is physically wider and offers a slightly larger contact patch. He said it was roughly equivalent to a 330. Tolerance allows the size difference while still being officially a 325. Could be used on a 3RS but because of better traction, would move handling towards more understeer.
02-08-2011, 01:32 PM
#100
Rennlist Member
In this case I suspect that they simply revised the rear tyre to cope with the 2RS power etc.
02-08-2011, 06:56 PM
#104
3120lb is decent with the big ole turbo donk. Only what, $5K for the plastic fenders?
If you'd gotten with the program sooner, you'd have the lightweight headlights ...
It's a yoyo diet from here -- take some weight off ... then put in a cage ...
If you'd gotten with the program sooner, you'd have the lightweight headlights ...
It's a yoyo diet from here -- take some weight off ... then put in a cage ...
02-08-2011, 08:33 PM
#105
Instructor
Join Date: May 2010
Location: On the way to the track...
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Hi Pete,
Thanks for sharing, and all the excellent information you've posted. One question: Did you ask if Porsche plans to offer a non CL wheel option on GT cars for track junkies in the future?
All the best with the new car,
Ron
Thanks for sharing, and all the excellent information you've posted. One question: Did you ask if Porsche plans to offer a non CL wheel option on GT cars for track junkies in the future?
All the best with the new car,
Ron