Rennteam 2.0 - EN - Forum - Re: Cayman GT4 RS - Page1

Jul 10, 2015 5:25:06 AM

jesse: Co-Pilot; Loc: Germany , Germany; Posts: 270, Gallery; Registered on: Nov 13, 2004

Cayman GT4 RS

From what I hear coming out of Weissach we need a new, please non-salmon, thread Smiley
All this, let's try to foresee what we can expect:

- Production numbers: Limited edition , or limited due to time constrains? Probably a limited edition
- Engine as in GT4: no X51 options, but GTS software mapping, with only slightly reduced power? Probably 410 - 420 HP
- Gearbox: 6 Speed manual
- Less weight than GT4: of course , which numbers can be expected (-40 kg) ?
- Better down force numbers: bigger rear spoiler, for sure

Edit : I've have overseen the GT4 CUP thread, so, just to clarify, I'd like to talk here about the street legal version, P seems to plan.

Next
Threads

Jul 10, 2015 7:11:32 AM

bluelines: Rennteam VIP; Loc: Argovia , Switzerland; Posts: 11655, Gallery; Registered on: Apr 29, 2005; Reply to: jesse

Re: Cayman GT4 RS

Interesting rumour. I could see a bump in price for this GT4 RS. It will sell out immediately anyway.

Any idea how they are going to achieve that power figure with only software and no hardware? Sounds optimistic to me. The 997.2 GTS had 408hp with software and hardware.

--

Next
Threads

Jul 10, 2015 7:30:47 AM

Adam2S: Senior; Loc: UK , United Kingdom; Posts: 745, Gallery; Registered on: Feb 19, 2007; Reply to: bluelines

Re: Cayman GT4 RS

Is there even time left in the 981.1 lifecycle to squeeze in even a short run of GT4RS production? I thought GT4 was taking through to the end so unless they run in parallel, which would mean ramping up total production or reducing GT4 production, I cant see how it could happen?

--

Current - Aston V12 Vantage, Morning Frost White, Buckets, Manual

On Order - Cayman GT4, Racing Yellow, LWB

Next
Threads

Jul 10, 2015 8:53:43 AM

d997h: Expert; Loc: . , Germany; Posts: 1810, Gallery; Registered on: Nov 24, 2005; Reply to: Adam2S

Re: Cayman GT4 RS

I have my doubts as well - dealers here in Germany try to get every slot they can get hold of on any GT4 production, so why should P. bother with the RS, it cannot be a matter of homologation, could it ?

Next
Threads

Jul 10, 2015 1:29:13 PM

MKW: Rennteam Pro; Loc: Palo Alto and North Lake Tahoe , United States; Posts: 2491, Gallery; Registered on: Nov 22, 2002; Reply to: d997h

Re: Cayman GT4 RS

ECU software tweak cost them almost " nothing "......making the lithium battery std , with reg battery " optional " results in advertising a further 30 lb weight drop for the RS version .......optimizing bigger or taller wing or some added / changed front aero biased for the track costs mostly wind tunnel time but their experienced folks can do it in their sleep and .....small tweeks to electric steering or yaw control software and such and voila , GT4RS, for homoligation and would be easy to crank out in parallel with remaining GT4 orders until 981.1 is concluded . So even a small run of them is profitable , certainly not a money loser ,

I suspect all the above was done concurrently with regular GT4 development so it is just a matter of market timing if an RS has always been part of the plan , with the former model's specing simply being " dialed back " .

Next
Threads

Jul 10, 2015 2:55:44 PM

jesse: Co-Pilot; Loc: Germany , Germany; Posts: 270, Gallery; Registered on: Nov 13, 2004; Reply to: bluelines

Re: Cayman GT4 RS

> Any idea how they are going to achieve that power figure with only software and no hardware?

For example, the HP upgrade for the 991 GTS is just an other engine mapping (including an other exhaust system of course)

Next
Threads

Jul 10, 2015 3:31:32 PM

bluelines: Rennteam VIP; Loc: Argovia , Switzerland; Posts: 11655, Gallery; Registered on: Apr 29, 2005; Reply to: jesse

Re: Cayman GT4 RS

jesse:
> Any idea how they are going to achieve that power figure with only software and no hardware?

For example, the HP upgrade on the GTS is just an other engine mapping (including an other exhaust system of course)

Which GTS are you referring to? The 991 GTS which "shares" the 3.8l engine from the GT4 but with X51 which is far more than just a software remap... or the 981 GTS which has a different 3.4l engine than the GT4 where the software remap achieved +10hp?

Unless the GT4 is heavily detuned, which I doubt, I think it will be optimistic to see output higher than 400hp with only a software remap.

--

Next
Threads

Jul 10, 2015 3:38:37 PM

Gnil: Rennteam Moderator; Loc: VD, Switzerland , Switzerland; Posts: 14171, Gallery; Registered on: Mar 11, 2005; Reply to: bluelines

Re: Cayman GT4 RS

According to RS magasine the detuned engine in the GT4 is due to a problem fitting the larger intakes etc.... from the standard 991 S engine . The engine as it is in the carrera does not fit into the Cayman

--

997.2 C2 , -20mm I 964 Carrera 4 I 991 GT3 RS on order delivery early Sept .

Next
Threads

Jul 10, 2015 3:47:04 PM

bluelines: Rennteam VIP; Loc: Argovia , Switzerland; Posts: 11655, Gallery; Registered on: Apr 29, 2005; Reply to: Gnil

Re: Cayman GT4 RS

Gnil:
According to RS magasine the detuned engine in the GT4 is due to a problem fitting the larger intakes etc.... from the standard 991 S engine . The engine as it is in the carrera does not fit into the Cayman

Yes, this was mentioned in a few reviews earlier this year too. But I don't know if they all quote each other indecision The 6-chamber intake from the X51 package apparently does not fit yes

--

Next
Threads

Jul 10, 2015 7:57:47 PM

MKW: Rennteam Pro; Loc: Palo Alto and North Lake Tahoe , United States; Posts: 2491, Gallery; Registered on: Nov 22, 2002; Reply to: bluelines

Re: Cayman GT4 RS

bluelines:
Gnil:
According to RS magasine the detuned engine in the GT4 is due to a problem fitting the larger intakes etc.... from the standard 991 S engine . The engine as it is in the carrera does not fit into the Cayman

Yes, this was mentioned in a few reviews earlier this year too. But I don't know if they all quote each other The 6-chamber intake from the X51 package apparently does not fit

we are making it too complicated ...the GT4 engine prob produces minimum of , say, 395 hp, but is officially listed as 385 ...if GT4RS sees light of day, even if using idetical motor and ECU tune, Porsche can simply list its official power as , say , 390 hp . They will simply give a carefully scripted vague answer to how they came up with the " extra " power .

Smiley

Next
Threads

Jul 10, 2015 9:22:46 PM

bluelines: Rennteam VIP; Loc: Argovia , Switzerland; Posts: 11655, Gallery; Registered on: Apr 29, 2005; Reply to: MKW

Re: Cayman GT4 RS

MKW:

we are making it too complicated ...the GT4 engine prob produces minimum of , say, 395 hp, but is officially listed as 385 ...if GT4RS sees light of day, even if using idetical motor and ECU tune, Porsche can simply list its official power as , say , 390 hp . They will simply give a carefully scripted vague answer to how they came up with the " extra " power .

Naaaaah, they would never do that! Smiley After all this is a company who said they would never build a diesel again and that PDK in a GT-car is for grandmothers... oh, wait... Smiley

--

Next
Threads

Jul 10, 2015 9:46:42 PM

DaveGordon: Rennteam Pro; Loc: Zürich , Switzerland; Posts: 2774, Gallery; Registered on: Aug 20, 2007; Reply to: Gnil

Re: Cayman GT4 RS

Gnil:
According to RS magasine the detuned engine in the GT4 is due to a problem fitting the larger intakes etc.... from the standard 991 S engine . The engine as it is in the carrera does not fit into the Cayman

RUF put the standard X51 911 motor in Boxsters and reckon it makes the same hp on the dyno.. yes

--

2015 911 GT3, 2011 987S, 1964 Type 1

Next
Threads

Jul 11, 2015 5:37:43 AM

jesse: Co-Pilot; Loc: Germany , Germany; Posts: 270, Gallery; Registered on: Nov 13, 2004; Reply to: bluelines

Re: Cayman GT4 RS

bluelines:
jesse:
> Any idea how they are going to achieve that power figure with only software and no hardware?

For example, the HP upgrade on the GTS is just an other engine mapping (including an other exhaust system of course)

Which GTS are you referring to? The 991 GTS which "shares" the 3.8l engine from the GT4 but with X51 which is far more than just a software remap...

I mean the 991 GTS. From what I've been told, intake, exhaust and mainly software mapping making the difference in comparison to the "standard" 991 Carrera S. Right?

Top
Threads

Board	Subject	Last post	Views	Replies
Porsche	SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II)	4/17/24 7:16 AM Gnil	763850	1798
Porsche	Welcome to Rennteam: Cars and Coffee... (photos)	4/7/24 11:48 AM Boxster Coupe GTS	436177	565
Porsche	OFFICIAL: Cayman GT4 RS (2021)	5/12/23 12:11 PM W8MM	260897	288
Porsche	OFFICIAL: Porsche 911 (992) GT3 RS - 2022	3/12/24 8:28 AM DJM48	257862	323
Porsche	The new Macan: the first all-electric SUV from Porsche	1/30/24 9:18 AM RC	82579	45
Porsche	OFFICIAL: Taycan 2024 Facelift	3/15/24 1:23 PM CGX car nut	5325	50
Porsche	The moment I've been waiting for...	2/1/24 7:01 PM Pilot	876587	1364
Porsche	992 GT3	7/23/23 7:01 PM Grant	808530	3868
Porsche	Welcome to the new Taycan Forum!	2/10/24 4:43 PM nberry	387809	1526
Porsche	GT4RS	4/17/24 8:53 PM Gauss	385828	1452
Others	Tesla 2 the new thread	12/13/23 2:48 PM CGX car nut	368885	2401
Porsche	Donor vehicle for Singer Vehicle Design	7/3/23 12:30 PM Porker	366739	797
Ferrari	Ferrari 812 Superfast	4/21/23 8:09 AM the-missile	289858	550
Porsche	Red Nipples 991.2 GT3 Touring on tour	4/11/24 12:32 PM Ferdie	286501	668
Porsche	Collected my 997 GTS today	10/19/23 7:06 PM CGX car nut	259239	812
Lambo	Huracán EVO STO	7/30/23 6:59 PM mcdelaug	237582	346
Lotus	Lotus Emira	6/25/23 2:53 PM Enmanuel	225611	101
Others	Corvette C8	10/16/23 3:24 PM Enmanuel	220136	488
Others	Gordon Murray - T.50	11/22/23 10:27 AM mcdelaug	167122	387
Porsche	Back to basics - 996 GT3 RS	6/11/23 5:13 PM CGX car nut	139067	144
BMW M	2024 BMW M3 CS Official Now	12/29/23 9:04 AM RC	115808	303
Motor Sp.	2023 Formula One	12/19/23 5:38 AM Whoopsy	107644	685
Others	Valkyrie final design?	4/28/23 2:45 AM Rossi	99343	219
Porsche	2022 992 Safari Model	3/7/24 4:22 PM Whoopsy	83653	239
AMG	Mercedes-Benz W124 500E aka Porsche typ 2758	2/23/24 10:03 PM blueflame	74908	297
Porsche	992 GT3 RS	3/3/24 7:22 PM Whoopsy	53233	314
Motor Sp.	Porsche 963	3/16/24 9:27 PM Whoopsy	24726	237
Ferrari	Ferrari 296 GTB (830PS, Hybrid V6)	1/21/24 4:29 PM GT-Boy	20963	103
BMW M	2022 BMW M5 CS	4/8/24 1:43 PM Ferdie	19235	140
AMG	G63 sold out	9/15/23 7:38 PM Nico997	16471	120

Crown

Forum - Thread

Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Re: Cayman GT4 RS

Forum

Boards