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Motor Trend Head 2 Head: AMG GTR vs GT3 PDK vs GT3 M

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Old 03-15-2018, 03:19 AM
  #31  
cox1974
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hahahhahahahahahaha....... correct
Old 03-15-2018, 03:33 AM
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Oldmxnut
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Intriguing that manual times are coming out so close to PDK. Although I would respectively suggest that for 95% of us on here the delta would be significantly greater. That is, we personally couldn't get near our own PDK times. So I am thinking that if local club/ track day times are important to you (and in this case you wouldn't be a paid driver anyway) you would still want a PDK for lap time bragging rights. If you don't care so much, its the manual all the way.
Old 03-15-2018, 09:26 AM
  #33  
Waxer
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What's the huge surprise? LOL. One lap wonder with MT vs. PDK comparing a perfect lap. Ever see a one lap race or a 1 lap DE without traffic? I haven't. Compare lap times and finishing over a 1 to 2 hour race in traffic or multiple lap averages. You will see the PDK stretch the time differential.
Old 03-15-2018, 10:19 AM
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haven't seen the footage, but can anyone report if Pobst used rev match and no-lift shifting?
Old 03-15-2018, 10:20 AM
  #35  
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I’m not sure why they didn’t use launch control on the manual. Pretty awesome review though. Glad I got a 6 speed.
Old 03-15-2018, 10:21 AM
  #36  
drdonger
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Originally Posted by Waxer
What's the huge surprise? LOL. One lap wonder with MT vs. PDK comparing a perfect lap. Ever see a one lap race or a 1 lap DE without traffic? I haven't. Compare lap times and finishing over a 1 to 2 hour race in traffic or multiple lap averages. You will see the PDK stretch the time differential.
Not all of us are race car drivers like you Waxer. Some of us just want to have fun and don’t need every last tenth. I personally don’t race cars to put food on the table
Old 03-15-2018, 10:24 AM
  #37  
GrantG
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Originally Posted by neurotic
haven't seen the footage, but can anyone report if Pobst used rev match and no-lift shifting?
I think he did not. He's a good enough driver that he gave away very little if any time by skipping the Rev-Match downshifts. I haven't tried the No-Lift upshifts yet, so don't have an opinion yet about whether it's significantly faster or not.
Old 03-15-2018, 10:27 AM
  #38  
drdonger
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Originally Posted by GrantG
I think he did not. He's a good enough driver that he gave away very little if any time by skipping the Rev-Match downshifts. I haven't tried the No-Lift upshifts yet, so don't have an opinion yet about whether it's significantly faster or not.
Driving a manual is so second nature to him, he probably would have been slower with rev matching and no lift shifting😂
Old 03-15-2018, 10:50 AM
  #39  
Riz
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The liveliness of the manual gt3 has to be the mechanical lsd right?
Old 03-15-2018, 11:11 AM
  #40  
gago1101
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Originally Posted by Riz
The liveliness of the manual gt3 has to be the mechanical lsd right?
That’s what they were attributing it to in the review.
Old 03-15-2018, 11:46 AM
  #41  
GrantG
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Originally Posted by Riz
The liveliness of the manual gt3 has to be the mechanical lsd right?
Hopefully, it will survive a bit longer than some of the past LSD versions...
Old 03-15-2018, 11:47 AM
  #42  
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Isn’t torque vectoring not lost with the manual? May not matter on the street but I’m sure it provides additional stability on the track.
Old 03-15-2018, 11:52 AM
  #43  
GrantG
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Originally Posted by p997s123
Isn’t torque vectoring not lost with the manual? May not matter on the street but I’m sure it provides additional stability on the track.


Both Manual and PDK have torque vectoring, but the electronic LSD in the PDK car theoretically should make it more effective (because it can fully open the diff to allow truly independent braking of each rear wheel without transferring braking force to the opposite side rear wheel). That's why Manual has PTV and PDK has PTV+

But it's possible that the chassis are tuned differently to compensate for the above difference, leading to a more entertaining balance (and faster Firgure-8) in the Manual.

Probably worth playing around with swaybar settings if one wants a looser setup...
Old 03-15-2018, 11:53 AM
  #44  
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Originally Posted by GrantG
Hopefully, it will survive a bit longer than some of the past LSD versions...
Yea I'm wondering how this will last, with the no lift upshifts and the rev matching. Porsche has still been incredible with its ability to build resilient cars but going back to a manual with mech LSD just not sure where we will end up
Old 03-15-2018, 12:09 PM
  #45  
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Originally Posted by Oldmxnut
Intriguing that manual times are coming out so close to PDK. Although I would respectively suggest that for 95% of us on here the delta would be significantly greater. That is, we personally couldn't get near our own PDK times.
I disagree. For those of us who go to the same track repeatedly, the shift points and rhythm of the lap become second nature and it's possible to become very consistent with some practice. And with the Rev-Matching Downshifts and No-Lift upshifts if needed/desired, there's no reason that a decent driver shouldn't come quite close to his PDK times.


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