Notices
991 GT3, GT3RS, GT2RS and 911R 2012-2019
Sponsored by:
Sponsored by:

Porsche's new philosophy with the GT3 according to AP

Thread Tools
 
Search this Thread
 
Old 03-28-2017, 12:56 PM
  #136  
Brosef
Racer
 
Brosef's Avatar
 
Join Date: May 2016
Posts: 487
Received 36 Likes on 25 Posts
Default

Originally Posted by Waxer
Seriously? LOL.

Power curves are near identical to me on both hp and torque. One curve Nm/Torque. On torque curve RS is blue other is Kw/hp where RS is red. No meaningful difference. If you think your butt can feel the difference in 200 rpm you have a very sensitive rear.

In fact the "9000 rpm" red line produces nothing but diminishing returns based on the power curve. In fact, it appears from the power curve the RS actually is generating more torque from 6000 to 8000 rpm while the .2 is lower and dropping all the way to 9000.
let's wait and see what shows up on an independent dyno. we know the displacement of the two is the same, but the updated motor has improved oiling and valvetrain that reduces parasitic losses to the tune of about 8hp. nevertheless, Porsche is advertising it as a clean 500hp. that's not to say it isn't higher than that.

my money is on the fact that it will prove to be a more powerful motor on the independent chassis dyno (and at the drag strip), regardless of the dyno charts published by the same group that is rating it as an even 500hp.
Old 03-28-2017, 02:12 PM
  #137  
Mika911
Racer
 
Mika911's Avatar
 
Join Date: Oct 2015
Location: London
Posts: 487
Received 34 Likes on 25 Posts
Default

Originally Posted by Brosef
let's wait and see what shows up on an independent dyno. we know the displacement of the two is the same, but the updated motor has improved oiling and valvetrain that reduces parasitic losses to the tune of about 8hp. nevertheless, Porsche is advertising it as a clean 500hp. that's not to say it isn't higher than that.

my money is on the fact that it will prove to be a more powerful motor on the independent chassis dyno (and at the drag strip), regardless of the dyno charts published by the same group that is rating it as an even 500hp.
Shouldn't the ram air effect of the side intakes on the RS make up for some of the gains of the GT3.
Old 03-28-2017, 02:18 PM
  #138  
Airbag997
Rennlist Member
 
Airbag997's Avatar
 
Join Date: Aug 2016
Location: Phoenix
Posts: 1,126
Received 442 Likes on 231 Posts
Default

Originally Posted by Mika911
Shouldn't the ram air effect of the side intakes on the RS make up for some of the gains of the GT3.
Those are not ram air scoops on the side, for cooling only. Ram air scoops are on the top of the rear deck lid
Old 03-28-2017, 04:28 PM
  #139  
GrantG
Addict
Rennlist Member

 
GrantG's Avatar
 
Join Date: Jun 2002
Location: Denver
Posts: 17,770
Received 4,721 Likes on 2,691 Posts
Default

Originally Posted by Airbag997
Those are not ram air scoops on the side, for cooling only. Ram air scoops are on the top of the rear deck lid
Yes, they are ram air scoops on the sides with the RS. The GT3 has its intakes on the rear deck, but the RS does not (funnels air from the rear quarter panels).
Old 03-28-2017, 04:30 PM
  #140  
GrantG
Addict
Rennlist Member

 
GrantG's Avatar
 
Join Date: Jun 2002
Location: Denver
Posts: 17,770
Received 4,721 Likes on 2,691 Posts
Default

Originally Posted by Mika911
Shouldn't the ram air effect of the side intakes on the RS make up for some of the gains of the GT3.
Any difference there won't show up on the dyno - car needs to be traveling very fast to make a difference (not parked on engine dyno). Not sure how much more power the RS's intakes could add compared to the rear deck intakes of the GT3, but I'd be surprised if it was more than 1 to 5 hp and only when traveling near top speed.

Last edited by GrantG; 03-28-2017 at 05:02 PM.
Old 03-28-2017, 04:49 PM
  #141  
Airbag997
Rennlist Member
 
Airbag997's Avatar
 
Join Date: Aug 2016
Location: Phoenix
Posts: 1,126
Received 442 Likes on 231 Posts
Default

Originally Posted by GrantG
Yes, they are ram air scoops on the sides with the RS. The GT3 has its intakes on the rear deck, but the RS does not (funnels air from the rear quarter panels).
I stand corrected.
Old 03-28-2017, 04:51 PM
  #142  
GrantG
Addict
Rennlist Member

 
GrantG's Avatar
 
Join Date: Jun 2002
Location: Denver
Posts: 17,770
Received 4,721 Likes on 2,691 Posts
Default

Originally Posted by Airbag997
I stand corrected.
Happens to the best of us
Old 03-28-2017, 04:59 PM
  #143  
Airbag997
Rennlist Member
 
Airbag997's Avatar
 
Join Date: Aug 2016
Location: Phoenix
Posts: 1,126
Received 442 Likes on 231 Posts
Default

Originally Posted by GrantG
Happens to the best of us
Learn something new everyday.
Old 03-28-2017, 07:43 PM
  #144  
Waxer
Nordschleife Master
 
Waxer's Avatar
 
Join Date: Jul 2011
Location: Central New Jersey
Posts: 5,435
Received 810 Likes on 424 Posts
Default

Originally Posted by Spyder Man
More performance is more performance doesn't matter about your insensitive butt can read it or not!


The graphs are for guidance only as the actual power curves will be slightly different.


What's to take home for the 911.2 GT3 engine is that


1. Max torque is at 6000rpm instead of 6250rpm of the RS
2. Max rev of 9000 rpm instead of 8600rpm of the RS so one can stay in a gear longer and also at a higher torque point after shifting.
Your butt is obviously very very sensative. I don't think I could tell the difference from the seat of the pants based on the power curves above.
Even 0-60 times seem comprable.

Yes, you can stay in a gear longer alll the way down to the bottom of the power curve. Except for the Mulsane Straight or the high banks at Daytona I am unaware of any straights in the north east where you would run out to 9000 in 7th gear. Enlighten me if you know otherwise.

In vast majority of cases its a non issue and meanigless to most DE'ers and merely bragging rights you can rev to 9000 all the way down . Woohoo.

You discount and lost sight of the remaining areo and rear and front track advantage that remains with the RS likely more than offsetting the predominately irrelevant 400 rpm advantage of the .2

The real advantage of the .2 engine is what they do with it in the future. The real world peformance difference with this iteration seems non existant or neglible at best.

Cheerio.
Old 03-28-2017, 11:45 PM
  #145  
Leica 993
Racer
 
Leica 993's Avatar
 
Join Date: Jan 2015
Location: Ohio
Posts: 429
Received 4 Likes on 3 Posts
Default

Who cares about all of these statistics, let's get the heart of the matter. If I buy a 991.2GT3 road car, will I be able to beat my neighbor, driving his 991.1 GT3RS and my other neighbor, in his 996 Turbo to Whole Foods, which is 8.5 miles away from our houses? Couple of low speed sweepers and approximately 5 miles of highway? I'll go back and check the ratio calculators and transmission diagrams again. I have a feeling these guys are in for it this time. Mach Five Out!
Attached Images  
Old 03-29-2017, 12:50 AM
  #146  
Waxer
Nordschleife Master
 
Waxer's Avatar
 
Join Date: Jul 2011
Location: Central New Jersey
Posts: 5,435
Received 810 Likes on 424 Posts
Default

Ha! No way will my RS keep up with the Mach 5.

I'll have to dust off the Shooting Star. Bought it from Racer X years ago.
Old 03-29-2017, 01:01 AM
  #147  
Leica 993
Racer
 
Leica 993's Avatar
 
Join Date: Jan 2015
Location: Ohio
Posts: 429
Received 4 Likes on 3 Posts
Default

Originally Posted by Waxer
Ha! No way will my RS keep up with the Mach 5.

I'll have to dust off the Shooting Star. Bought it from Racer X years ago.
Old 03-29-2017, 05:47 AM
  #148  
Cay_PI
Racer
 
Cay_PI's Avatar
 
Join Date: Aug 2016
Posts: 381
Received 88 Likes on 62 Posts
Default

Forget about these marketing graphs. The real power curves look different. The 991.1 RS has ists power peak at about 8100 rpm, the 3.8 at about 8400 rpm. Lets wait for the first dyno runs of the new one...
Old 03-29-2017, 07:13 AM
  #149  
Spyder Man
Instructor
 
Spyder Man's Avatar
 
Join Date: Nov 2015
Location: Sydney
Posts: 112
Likes: 0
Received 2 Likes on 1 Post
Default

Originally Posted by Waxer
Your butt is obviously very very sensative. I don't think I could tell the difference from the seat of the pants based on the power curves above.
Even 0-60 times seem comprable.

Yes, you can stay in a gear longer alll the way down to the bottom of the power curve. Except for the Mulsane Straight or the high banks at Daytona I am unaware of any straights in the north east where you would run out to 9000 in 7th gear. Enlighten me if you know otherwise.

In vast majority of cases its a non issue and meanigless to most DE'ers and merely bragging rights you can rev to 9000 all the way down . Woohoo.

You discount and lost sight of the remaining areo and rear and front track advantage that remains with the RS likely more than offsetting the predominately irrelevant 400 rpm advantage of the .2

The real advantage of the .2 engine is what they do with it in the future. The real world peformance difference with this iteration seems non existant or neglible at best.

Cheerio.


We are talking about the engine only...


What they will do in the future is anyone's guess and now I mean right now the 991.2 GT engine is the highest performance NA engine ever in a Porsche production car


Enjoy your RS and of course I like it too
Old 03-29-2017, 09:48 AM
  #150  
Waxer
Nordschleife Master
 
Waxer's Avatar
 
Join Date: Jul 2011
Location: Central New Jersey
Posts: 5,435
Received 810 Likes on 424 Posts
Default

Originally Posted by Spyder Man
We are talking about the engine only...


What they will do in the future is anyone's guess and now I mean right now the 991.2 GT engine is the highest performance NA engine ever in a Porsche production car


Enjoy your RS and of course I like it too
Based on that power curve the .2 wins by the hair on my chin if that.

I'm sure PAG made sure it's the "best" performing 4.0L they've sold even if by a hair. That is of course until the next GT 4.0 arrives.

It's all a major mind **** game with them to get you to transfer your wealth to their bank account.


Quick Reply: Porsche's new philosophy with the GT3 according to AP



All times are GMT -3. The time now is 10:23 PM.