Consolidated 991RS thread
#1486
Addict
Rennlist Member
Rennlist Member
#1487
Addict
Rennlist Member
Rennlist Member
#1488
Agree with you SAM!!! I still don't understand why the motoring world doesn't see the benefit of the low CofG rear engine 911. They just keep propagating the old 911 stories, and say Porsche has engineered the danger out of it. It just amazes me. You will hear that the 911 is "efficient" with it's use of power, but never that it "could" be an advantage to have the rear engine. Remember that article in one of the magazines, comparing the Cayman and the Gt3?
The 911 does have advantages, and I generally prefer the way it drives. Many of those advantages, however, are the result of engineering decisions such as a multi-link rear suspension on the 911 vs strut on the Cayman, higher ride height on the Cayman, etc. In the limit, at least as far as absolute performance the majority of situations is concerned, mid-engine is the way to go. Porsche knows this, and the CGT, 918, and every real race car demonstrates this. Driving enjoyment is a different question...
SW takes the same stroke as the 4.0 and increases bore. At that point the bore is essentially at the limit without boring the block; with boring the block a slight bore increase is possible, and a further stroke increase is also possible. Something in the range of 4.4 liters seems possible reliably on the Mezger with some drawbacks such as reduced revs. The 9A1 will be different again...
#1489
Rennlist Member
Heck, I'll take one at 350hp provided it's NA, revs above 8k, and weighs less than 2600lbs but we've all given up on the weight front at this point, it seems. These games PAG is playing by stuffing the 300-475hp range with infinite variations of basically the same engine, separated by 10hp differences, are becoming ridiculous. A mere distraction for the fact that their cars are heavier with each new generation despite using ever lighter materials with which to build them. Preparation for the wonderful world of porky hybrids, I guess.
#1490
Rennlist Member
Join Date: Feb 2006
Location: Wishing I Was At The Track
Posts: 13,659
Received 1,886 Likes
on
972 Posts
Bear in mind that the 991 body in white and the new motor are each about 70lbs lighter than the prior gen. It's really PDK and RWS that undercut most of the potential weight savings in new paltform.
Porsche has the basic bones to make the 991 RS significantly lighter than the 997.2 RS and it's going to be very interesting to see how aggressive they get in terms of decontenting/weight savings.
Porsche has the basic bones to make the 991 RS significantly lighter than the 997.2 RS and it's going to be very interesting to see how aggressive they get in terms of decontenting/weight savings.
#1491
Drifting
Bear in mind that the 991 body in white and the new motor are each about 70lbs lighter than the prior gen. It's really PDK and RWS that undercut most of the potential weight savings in new paltform.
Porsche has the basic bones to make the 991 RS significantly lighter than the 997.2 RS and it's going to be very interesting to see how aggressive they get in terms of decontenting/weight savings.
Porsche has the basic bones to make the 991 RS significantly lighter than the 997.2 RS and it's going to be very interesting to see how aggressive they get in terms of decontenting/weight savings.
The car could have 475 bhp and weigh exactly the same as the "base" GT3 (some lighter parts for sure; but bigger wing and aero package, bigger wheels and tires, wider bodywork, etc.) and be slower at the top end due to drag and also potentially shorter gearing.
They'd still sell them all. They don't have to do much.
#1492
Rennlist Member
Bear in mind that the 991 body in white and the new motor are each about 70lbs lighter than the prior gen. It's really PDK and RWS that undercut most of the potential weight savings in new paltform. Porsche has the basic bones to make the 991 RS significantly lighter than the 997.2 RS and it's going to be very interesting to see how aggressive they get in terms of decontenting/weight savings.
Thanks Nizer. All you guys with red need to take note. The lighter chassis only applies to white.
#1494
Three Wheelin'
In the modern era of cars, safety and government regs really control what we will see. The 73 RS would do terrible in a modern day crash test. The governments of the world are protecting the public. In fact, nearly all mfrs will be forced to start making electric vehicles simply to meet fleet average mpg by 2025.
#1495
RL Community Team
Rennlist Member
Rennlist Member
If I have my history right (and I may not), the last inline-8 that Porsche made was for the 908, which had a tail as long as some car hoods these days.
#1496
Technical Guru
Rennlist Member
Rennlist Member
we can't just pretend that the 911 platform is doing amazing in motorsports. They're in 2nd behind Chevy in IMSA (and would be lower if not for some failures on the other cars), and had a pretty poor showing at Le Mans, only coming in 3rd in the GTE Pro. I don't know if there are other reasons, but it does seem like Porsche is not dominant like it once was.
#1497
#1498
Addict
Rennlist Member
Rennlist Member
BTW, the 9A1 platform of the new DFI Flat-6 was specifically designed to be modular, allowing F-4, F-6, and F-8 configurations...
#1499
Rennlist Member
Thread Starter
Heck, I'll take one at 350hp provided it's NA, revs above 8k, and weighs less than 2600lbs but we've all given up on the weight front at this point, it seems. These games PAG is playing by stuffing the 300-475hp range with infinite variations of basically the same engine, separated by 10hp differences, are becoming ridiculous. A mere distraction for the fact that their cars are heavier with each new generation despite using ever lighter materials with which to build them. Preparation for the wonderful world of porky hybrids, I guess.
I think the motor was moved forward in the 991 specifically to make room for an eventual Flat-8 (much shorter than inline-8 by the way), as well as hybrid gear in some models. It should only be several inches longer and not terribly more heavy. It would allow higher revs, displacement, power, and torque than the GT3's F-6, without resorting to turbos.
BTW, the 9A1 platform of the new DFI Flat-6 was specifically designed to be modular, allowing F-4, F-6, and F-8 configurations...
BTW, the 9A1 platform of the new DFI Flat-6 was specifically designed to be modular, allowing F-4, F-6, and F-8 configurations...
Its official folks you read it here first.
#1500
Addict
Rennlist Member
Rennlist Member