Notices
GT4/Spyder Discussions about the 981 GT4/Spyder

718 GT4?

Thread Tools
 
Search this Thread
 
Old Jun 13, 2018 | 12:54 PM
  #2461  
ciscostud's Avatar
ciscostud
Advanced
 
Joined: Jun 2010
Posts: 52
Likes: 0
From: San Diego, CA
Default

Originally Posted by blackholescion
It's easy to calculate the approximate HP increase. (4.0/3.8)*385. Ratio of displacement increase * HP. This gets you to 405.26. If you consider the Carerra motor as a 400HP motor (since it was detuned in the GT4), then you get to 421.05 with nothing more than stroking.
That was somewhat my point too a while back. I would think you would be able to do more to it than just a cobb tune and exhaust based on this?
Reply
Old Jun 13, 2018 | 01:23 PM
  #2462  
digitalrurouni's Avatar
digitalrurouni
Pro
 
Joined: Jun 2016
Posts: 604
Likes: 5
From: Cumming, GA
Default

Originally Posted by chillindrdude
lol! This!

If you look at the CG of the engine/transaxle assembly in the 911, it's been steadily moving more towards the rear axle. Along with improvements in traction/stability control, that old school canti-levered feel of a rear engine car doesn't apply as much anymore.
I just read the RSR has gone mid engined right? Also apparently the next gen 911 will have it's engine pushed a bit more inboard as well...I guess they are doing that by making the car a little bit longer and thus not sacrifice the useless rear seats? Pretty soon the 911 will become the new Cayman :P
Reply
Old Jun 13, 2018 | 02:12 PM
  #2463  
Elderstatesman's Avatar
Elderstatesman
Cruisin'
 
Joined: Mar 2018
Posts: 9
Likes: 0
Default “Making sure it’s oroducts are profitable”

Originally Posted by jmartpr
That's great and I share your sentiments but....the reality is that if auto manufacturers do that they end up with twice the amount of models which require specific parts for each one driving the cost up, just to satisfy a niche. As an example see how many manufacturers are consolidating platforms, engines and eliminating low volume models. You got to see the macro from the manufacturer side.....PAG first priority is making sure their products are profitable while covering the most markets/products they can.... Hell....if I could ask for something, take out the rear trunk on the Cayman and drop the GT2 engine! The mid-engine platform was develop by PAG to be the entry level, if something new comes up it wont be a Cayman trust me.
Sometime our passion for Porsche products don't allow us to see the business side, which at the end is the #1 priority.
i’m not convinced a limited run GT4 RS with the GT3 motor would be bad for PAG’s profitability. The car would be priced much closer to the GT3 than the “normal” GT4, so it wouldn’t be “entry level” and cannibalize GT4 sales, and the factory would make plenty of profit on each one it sold. And if the “threat” to profitability is that GT3 customers supposedly will turn away from the GT3 because a handful of hot, but less engineered, decidedly “junior” GT4 RSs are running around, I don’t buy that. It totally discounts the 911’s history and mystique (you’ve always needed some extra skills to drive a 911 fast, right? — or so the mythology goes), and it underestimates the customer loyalty that has created. And one last, admittedly tongue-in-cheek point about profitability: how much did Porsche make on each 959? I’m not saying the GT4 RS with GT3 motor will happen; I just think the apocalyptic arguments for why it won’t are not sound.
Reply
Old Jun 13, 2018 | 02:30 PM
  #2464  
TJF's Avatar
TJF
Instructor
 
Joined: May 2012
Posts: 117
Likes: 10
From: San Diego
Default

Originally Posted by GAZZ
At the same time by not having a high end mid engine platform they are missing out on my business and many others who simply do not want the inferior driving dynamics of a rear engine car. Even if the GT3 had an 18,000 RPM engine and I dont care that much about the price, I just dont want a car that suffers from lift off oversteer at the limit. I want it to do what I tell it to do, not the other way around.
Absolutely! I agree wholeheartedly. I could get a GT2 RS , but would prefer GT4 RS.

This is also why am hoping they make a RSR for us, or convert all of their GT cars to mid engines. Just make sense..
Reply
Old Jun 13, 2018 | 02:39 PM
  #2465  
Whoopsy's Avatar
Whoopsy
Rennlist Member
15 Year Member
 
Joined: Aug 2006
Posts: 3,078
Likes: 1,516
From: Vancouver, BC
Default

Originally Posted by rloggie
He didn't say that Porsche told him this, only that he was told this talking to his connections within the network. I'm not saying he's right but we'll see soon enough. I've had this car promised since they ran out of 981 Spyder's. The man believes what he's saying. Just surprised mw that he offered this info in passing while I was there having service. I never brought it up. With people still debating whether the car will have a four or six cylinder.engine, I found it refreshing that he says it's a detuned GT3 NA. To me that's what was important. You put money on one hoping its a six cylinder I suspect. Anyway he didn't get this from reading a thread on RL unless he's lying, not.

He read a post from me that I posted oh 2 months back. Or heard it from someone that read my post 2 months ago.

When I first heard 4.0L I had automatically assumed it was the GT3 engine. It isn't and I had an updated post oh 3 weeks ago that he or his friend didn't read.

The GT3 engine, actually did make an appearance on another prototype at Weissach when I was there. A car that doesn't officially exists but these guys here are all over it already anyways.
Reply
Old Jun 13, 2018 | 03:04 PM
  #2466  
GrantG's Avatar
GrantG
Addict
Rennlist Member

20 Year Member
 
Joined: Jun 2002
Posts: 20,014
Likes: 7,040
From: Denver
Default

Originally Posted by GAZZ
At the same time by not having a high end mid engine platform they are missing out on my business and many others who simply do not want the inferior driving dynamics of a rear engine car. Even if the GT3 had an 18,000 RPM engine and I dont care that much about the price, I just dont want a car that suffers from lift off oversteer at the limit. I want it to do what I tell it to do, not the other way around.
I love rear-engine handling (much more than mid). Lift-off oversteer is not a bug, it's a feature. The car Does do what you tell it to do. Being able to cause rotation mid-corner is a rare and valuable asset (most cars are not this adjustable). If you don't want over-steer, then don't lift mid-corner. Yes, it does take awhile to train yourself to react properly to this handling behavior (best learned on a track).

Once learned, there is no substitute as they say

BTW, the main reason that the RSR went to mid-engine is because this allowed them to make a huge under-car splitter (engine is in the way on a rear-engined car), not because the rear-engine car had a handling issue.
Reply
Old Jun 13, 2018 | 07:34 PM
  #2467  
jmartpr's Avatar
jmartpr
Rennlist Member
10 Year Member
 
Joined: Jul 2015
Posts: 4,762
Likes: 1,501
Default

Originally Posted by Elderstatesman


i’m not convinced a limited run GT4 RS with the GT3 motor would be bad for PAG’s profitability. The car would be priced much closer to the GT3 than the “normal” GT4, so it wouldn’t be “entry level” and cannibalize GT4 sales, and the factory would make plenty of profit on each one it sold. And if the “threat” to profitability is that GT3 customers supposedly will turn away from the GT3 because a handful of hot, but less engineered, decidedly “junior” GT4 RSs are running around, I don’t buy that. It totally discounts the 911’s history and mystique (you’ve always needed some extra skills to drive a 911 fast, right? — or so the mythology goes), and it underestimates the customer loyalty that has created. And one last, admittedly tongue-in-cheek point about profitability: how much did Porsche make on each 959? I’m not saying the GT4 RS with GT3 motor will happen; I just think the apocalyptic arguments for why it won’t are not sound.

"limited run" as in 500 or 1000 of them? Ok...guess we will se the $350K Cayman. Ok so we take out limited run and do the GT3 engine....you have two cars probably $5K apart from each other or the same price. One has more options to choose (goodies) and some extra performance bits you do want at that price....or they plan to also do Multilink rear suspension and steering on a Cayman? Now that it's really a stretch for the current platform and a must if doing an RS. And believe it or not....there are a lot of P-Car owners, including GT owners specially since the introduction of PDK, that do care about those little GT4s getting too close to their GT3 performance space. The 959? That was Porsche development for their future 911s that they are still reeling in the profits...water cooled, twin turbo, all-wheel drive. It was a radical approach for racing different classes (homologation needed) that culminated in all of that technology being used on the production cars for years. Besides it was not a regular production car unlike a GT4 or a possible GT4RS. Bottom line, I'm not saying it can't happen but the chances are very, very slim. They had a better chance to do that on the 981.1 GT4....just do the X51, maybe a single mass flywheel (like in 997 GT3/RS era cars)...then on the next one go up to 4.0L...but they didn't do it and it wasn't because of profits.
Reply
Old Jun 13, 2018 | 07:41 PM
  #2468  
jmartpr's Avatar
jmartpr
Rennlist Member
10 Year Member
 
Joined: Jul 2015
Posts: 4,762
Likes: 1,501
Default

Originally Posted by GAZZ
At the same time by not having a high end mid engine platform they are missing out on my business and many others who simply do not want the inferior driving dynamics of a rear engine car. Even if the GT3 had an 18,000 RPM engine and I dont care that much about the price, I just dont want a car that suffers from lift off oversteer at the limit. I want it to do what I tell it to do, not the other way around.

Hey...It just came to me...they are not missing out on your business...you just have to buy a 918 or a Carrera GT!!!!!! Just kidding......
Reply
Old Jun 13, 2018 | 07:43 PM
  #2469  
Yargk's Avatar
Yargk
Rennlist Member
20 Year Member
 
Joined: Sep 2004
Posts: 2,368
Likes: 347
From: SF Bay Area, CA
Default

Originally Posted by GrantG
I love rear-engine handling (much more than mid). Lift-off oversteer is not a bug, it's a feature. The car Does do what you tell it to do. Being able to cause rotation mid-corner is a rare and valuable asset (most cars are not this adjustable). If you don't want over-steer, then don't lift mid-corner. Yes, it does take awhile to train yourself to react properly to this handling behavior (best learned on a track).

Once learned, there is no substitute as they say

BTW, the main reason that the RSR went to mid-engine is because this allowed them to make a huge under-car splitter (engine is in the way on a rear-engined car), not because the rear-engine car had a handling issue.
This. So much about my 930 was lazy and sloppy compared to the GT4, but I did like the rear weight distribution!
Reply
Old Jun 13, 2018 | 08:32 PM
  #2470  
Knutsm01's Avatar
Knutsm01
Rennlist Member
 
Joined: Apr 2018
Posts: 591
Likes: 189
From: US
Default

Originally Posted by Whoopsy
He read a post from me that I posted oh 2 months back. Or heard it from someone that read my post 2 months ago.

When I first heard 4.0L I had automatically assumed it was the GT3 engine. It isn't and I had an updated post oh 3 weeks ago that he or his friend didn't read.

The GT3 engine, actually did make an appearance on another prototype at Weissach when I was there. A car that doesn't officially exists but these guys here are all over it already anyways.
How would a mid engine prototype, hypothetically, perform against a known rear engine model with the same engine? In your expert opinion obviously. Assuming that might be one of the most desirable prototypes to come out of Weissach in a while.
Reply
Old Jun 13, 2018 | 08:59 PM
  #2471  
otisdog's Avatar
otisdog
Pro
 
Joined: Nov 2008
Posts: 569
Likes: 0
From: Sierra Madre, Ca.
Default

Originally Posted by jmartpr
"limited run" as in 500 or 1000 of them? Ok...guess we will se the $350K Cayman. Ok so we take out limited run and do the GT3 engine....you have two cars probably $5K apart from each other or the same price. One has more options to choose (goodies) and some extra performance bits you do want at that price....or they plan to also do Multilink rear suspension and steering on a Cayman? Now that it's really a stretch for the current platform and a must if doing an RS. And believe it or not....there are a lot of P-Car owners, including GT owners specially since the introduction of PDK, that do care about those little GT4s getting too close to their GT3 performance space. The 959? That was Porsche development for their future 911s that they are still reeling in the profits...water cooled, twin turbo, all-wheel drive. It was a radical approach for racing different classes (homologation needed) that culminated in all of that technology being used on the production cars for years. Besides it was not a regular production car unlike a GT4 or a possible GT4RS. Bottom line, I'm not saying it can't happen but the chances are very, very slim. They had a better chance to do that on the 981.1 GT4....just do the X51, maybe a single mass flywheel (like in 997 GT3/RS era cars)...then on the next one go up to 4.0L...but they didn't do it and it wasn't because of profits.
Your arguments are rather specious...how do you get to a $350K Cayman? Then you say that the two cars have a price that is either the same or $5K difference? A GT3 , or even a GT3 RS doesn't cost $350K. You can have it one way or the other, but not both. Then consider this...by the time a GT4 RS would hit the market there would be no GT3 models for sale - they'll be out of production. So, actually, there would be no "competition" between the two model ranges. The GT3 boys will already be salivating over the new 992 GT3, which, I think, won't be a very slow car. How is a rear multilink 'a must'? You work at Weissach? Have you driven a 500HP cayman? Okay, so how hard would that GT4 multilink be to come up with? The RSR has got a cayman bulkhead. It's also got a multilink suspension bolted to that bulkhead - not really that much of the stretch that you claim...
You, and a couple of other people on this forum are adamant that a GT4 RS is not coming, and your arguments are more emotional than factual.
Reply
Old Jun 13, 2018 | 09:20 PM
  #2472  
Knutsm01's Avatar
Knutsm01
Rennlist Member
 
Joined: Apr 2018
Posts: 591
Likes: 189
From: US
Default

As far as price for a possible RS, could they price it inline with a regular GT3? If they offered a Weissach package with mag wheels as an option you could easily reach $175k and sell 5x more than they would supply. That would be about $50k lower than a similarly equipped 3RS. In my opinion with an RS designation I would expect it to be more expensive than the standard GT3.
Reply
Old Jun 13, 2018 | 09:49 PM
  #2473  
chillindrdude's Avatar
chillindrdude
Burning Brakes
10 Year Member
 
Joined: Nov 2014
Posts: 923
Likes: 61
From: Virginia
Default

Originally Posted by GrantG
I love rear-engine handling (much more than mid). Lift-off oversteer is not a bug, it's a feature. The car Does do what you tell it to do. Being able to cause rotation mid-corner is a rare and valuable asset (most cars are not this adjustable). If you don't want over-steer, then don't lift mid-corner. Yes, it does take awhile to train yourself to react properly to this handling behavior (best learned on a track).

Once learned, there is no substitute as they say

BTW, the main reason that the RSR went to mid-engine is because this allowed them to make a huge under-car splitter (engine is in the way on a rear-engined car), not because the rear-engine car had a handling issue.
it kinda IS a handling issue when you think about it right? the mid-engine location intrinsically gives better weight distribution which "should" make damper and suspension geometry optimization easier. and the larger diffuser increases downforce, further improving handling/stability.

king of nurburgring times is important (to me) because i feel no other track on earth really tests the full range of a car's handling character like the nurburgring.

however, the rear engined 911 are not the end all be all, lest you remember, the top production car records of many tracks in this country are still held by the Viper ACR. a front engine RWD car.
Reply
Old Jun 13, 2018 | 10:36 PM
  #2474  
Whoopsy's Avatar
Whoopsy
Rennlist Member
15 Year Member
 
Joined: Aug 2006
Posts: 3,078
Likes: 1,516
From: Vancouver, BC
Default

Originally Posted by Knutsm01


How would a mid engine prototype, hypothetically, perform against a known rear engine model with the same engine? In your expert opinion obviously. Assuming that might be one of the most desirable prototypes to come out of Weissach in a while.
Wouldn't have matter if the other one is already out of production.

Plus, the HP rating would be different simply because of different intake and exhaust configuration.
Reply
Old Jun 13, 2018 | 10:40 PM
  #2475  
Wild Weasel's Avatar
Wild Weasel
Drifting
 
Joined: May 2016
Posts: 2,033
Likes: 315
Default

I don’t think that’s a fair comparison though.

Like it or not, the Ring is the only one that matters. Firstly for the reasons you mentioned. It’s just so massive and diverse that it tests all facets of a car’s capabilities.

Just as important though is the fact that the world has sort of decided it is and therefore it’s the only place that everyone goes to make their name.

I think GM just recently set a record at VIR with the new Corvette. So what? Porsche isn’t gonna send their A team there to beat it with the GT2RS. Why would they? Nobody cares.
Reply



All times are GMT -3. The time now is 01:03 AM.