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718 GTS 4.0/GT4/GT4RS/Spyder/25th Anniversary Discussions about the 718 version of the GT4RS, GTS 4.0, GT4, Spyder and 25th Anniversary Boxster
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Old 11-19-2021, 12:08 PM
  #4321  
Loess
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Has anyone seem reference to the use of helper springs?
Old 11-19-2021, 12:15 PM
  #4322  
BioBanker
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Re the cost of the engine that was referenced in a previous post as a reason why P would not put the "expensive" GT3 engine in a GT4.

I cant find the reference, but I have heard (read: it might not be correct!), that the total cost of manufacturing a base Boxster and a GT3 differs by $5k. Which is why Porsche has created this halo around the higher end cars and uses the lower price cars as gateways. Porsche used to limit production of some cars - no longer - and pricing based upon scarcity seems to be sticking. Amazing marketing - have scarcity jack price into a stratasphoric gross margin and then remove the scarcity and capture that margin on volume because demand is still higher than the cars that are available any given day (and then come out with a next gen once demand is satisfied) and the buyers have accepted the price as being the price.

I believe that Porsche has the highest gross margins in the business - there is a reason for that (the cars are less expensive to make versus their selling price compared to peers)
Old 11-19-2021, 12:16 PM
  #4323  
greatfox315
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Plastic intake and airbox photos






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Old 11-19-2021, 12:18 PM
  #4324  
FourT6and2
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Originally Posted by GrantG
What is the reason the 992 GT3 lost 10 PS from the previous RS?
Most likely emissions stuff. Particulate filters and tuning. The 991.2 GT3RS (at least prior to the very very last run for ROW), had none of the more recent regs. applied to it.
Old 11-19-2021, 12:18 PM
  #4325  
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Originally Posted by greatfox315
Plastic intake and airbox photos





Thanks for sharing the pics
Old 11-19-2021, 12:20 PM
  #4326  
FourT6and2
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Originally Posted by Loess
Has anyone seem reference to the use of helper springs?
I think I saw them in photos. All of the GT cars have had them for a number of years.
Old 11-19-2021, 12:21 PM
  #4327  
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Configurator says Weissach is not selectable this morning. Interest how quick that got turned off.
Old 11-19-2021, 12:24 PM
  #4328  
GrantG
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Originally Posted by FourT6and2
Most likely emissions stuff. Particulate filters and tuning. The 991.2 GT3RS (at least prior to the very very last run for ROW), had none of the more recent regs. applied to it.
The RS that I am referring to (sometimes known as 991.3 RS for RoW) also had particulate filters and ITB's to meet new Euro regs. That motor is fundamentally the same as 992 GT3 engine, yet was rated at 520PS.
Old 11-19-2021, 12:24 PM
  #4329  
matttheboatman
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Interesting that the engine compartment top lid is raised to make it work - why not? since that was generally dead space on the street car raising it and making a bespoke cover is a brilliant solution. Literally, thinking outside of the box. Kuddos to the Porsche engineers!
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Old 11-19-2021, 12:32 PM
  #4330  
TDT
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Originally Posted by Loess
Has anyone seem reference to the use of helper springs?
Yep. Stiffer main springs + Helper springs Front and Rear this time.

I’m interested to know if it has adjustable rear toe links from the factory this time around.
the impression from the published info is that that car is fully adjustable for height, camber, toe angle and ARBs.

Last edited by TDT; 11-19-2021 at 12:35 PM.
Old 11-19-2021, 12:33 PM
  #4331  
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One interesting observation from seeing the car in person yesterday: the storage bins on the right and left of the intake air filter are still intact, including the sliding cover and hand grip, yet they cannot be opened. Not sure if they were fixed shut for the show or if they are disabled from the factory. If the latter, I suspect it may be due to the fact that the air intake would make getting anything in and out of those bins a challenge.
Old 11-19-2021, 12:34 PM
  #4332  
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Did I miss the Clubsport price?
Old 11-19-2021, 12:36 PM
  #4333  
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Originally Posted by GrantG
The RS that I am referring to (sometimes known as 991.3 RS for RoW) also had particulate filters and ITB's to meet new Euro regs. That motor is fundamentally the same as 992 GT3 engine, yet was rated at 520PS.
The difference would be tuning then. Porsche needs to differentiate the power somehow between GT3 and GT3RS. Usually it's a few hp that's either just on paper for marketing or due to slight tuning difference. 10hp is nothing. The new GT3 typically has matching performance as the outgoing RS model. In this case, looks like the 992 GT3 and 991.2 GT3RS have similar performance so that keeps to the trend.
Old 11-19-2021, 12:38 PM
  #4334  
Stephen Shi
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Originally Posted by Loess
Has anyone seem reference to the use of helper springs?
Yea, it's described on the gt4rs page on the porsche website, performance section
Old 11-19-2021, 12:43 PM
  #4335  
GrantG
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Originally Posted by FourT6and2
The difference would be tuning then. Porsche needs to differentiate the power somehow between GT3 and GT3RS. Usually it's a few hp that's either just on paper for marketing or due to slight tuning difference. 10hp is nothing. The new GT3 typically has matching performance as the outgoing RS model. In this case, looks like the 992 GT3 and 991.2 GT3RS have similar performance so that keeps to the trend.
Yes, I am not worried about any potential loss of performance. I am just suggesting that 992 GT3 is intentionally detuned to differentiate it from the more expensive 991.2 GT3 RS and I am also suggesting that further detuning was done to differentiate the GT4 RS from both the 991.2 RS (-20hp and -15ft-lbs) and the 992 GT3 (-10hp and -15ft-lbs) for marketing reasons (more than plumbing issues with the layout).

All 3 models have fundamentally the same motor with slight plumbing differences (as well as Speedster and GT4 RS Clubsport).

BTW, the new 4RS Clubsport makes 465 Nm of torque vs. 470 Nm for 991.2 RS, Speedster, 992 Cup, and 992 GT3 vs 450 Nm for the GT4 RS.

The new Porsche 718 Cayman GT4 RS Clubsport

It would be quite a coincidence if the plumbing changes resulted in such exact round number differences in both power and torque among the 5 models, don't you think

Last edited by GrantG; 11-19-2021 at 01:55 PM.
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