GTR Vs McLaren Vs Porsche Vs ZL1

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Old Oct 17, 2024 | 11:11 AM
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GTR Vs McLaren Vs Porsche Vs ZL1

Hello,

I wanted to write a honest feedback about my AMG 2018 GTR with a quick comparison with my previous cars.

Mclaren 570s: Easy to drive, its chassis is better, but big reliability problem.
Porsche 991.2: Turbo, reliable but less fun to drive, less agile.
Porsche 991 GT3: reliable, easy to drive, lack of sensation during acceleration, better suspension.
Camaro ZL1: Reliable, monstrous to drive, lack of rigidity at the rear.
AMG GTR: Reliable, overheating brake, too much firecracker when decelerating, good acceleration sensation, bad suspension(Significant mass transfer between the front and rear)


This is not a race or a competition, but videos between friends where no risks are taken, or no one has anything to prove.


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Old Oct 17, 2024 | 03:47 PM
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Never thought I would see an S2000 pass a GTR…
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Old Oct 18, 2024 | 07:41 AM
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Originally Posted by AMG 17GT
Never thought I would see an S2000 pass a GTR…
Never rely on the appearance of a car.
I have owned a Honda S2000, Civic Type R, and a Honda NSX.
These are very reliable and efficient cars with few modifications.

My best time on that track that day was 1m34s, following my friend's S2000.
Without slowing down when catching up to the Porsche and the S2000, I could have done 1m32s, and with a better line, I think I can reach 1m30s.
With Trofeo R tires and a camber adjustment for the track, I think I can reach 1m28s.
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Old Oct 18, 2024 | 01:59 PM
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Originally Posted by menfou
AMG GTR: Reliable, overheating brake, . . .
Please specify your brake setup:

OEM Steels, or OEM Carbon Ceramics?

Tried any brake ducting?
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Old Oct 18, 2024 | 04:34 PM
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My comparison is based on original cars.
For my first track test, I had the original steel brakes with Tikt scoops.
Big disappointment.

I then installed Ferroro DS1.11 pads with BF Goodridge hoses + RBF700.
On the passenger side I left the Tikt scoops and on the right side I installed aluminum scoops.
The result is clear, simple scoops on the lower triangle are more efficient than the Tikt scoops.
I measured 30°C less on the side with the aluminum scoops.
320°C without scoop, 290°C with Tikt scoop
320°C without scoop, 260°C with aluminum scoop.
I no longer have any brake problems, I drove for 45 minutes without stopping, about 30 laps.

Last edited by menfou; Oct 18, 2024 at 04:35 PM.
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Old Oct 18, 2024 | 05:38 PM
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Interesting.

What Brand, and from where did you purchase the Aluminum Scoops?
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Old Oct 18, 2024 | 06:59 PM
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I mean, is anybody going to say it? We have become like sheep here.
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Old Oct 19, 2024 | 07:12 PM
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Originally Posted by AMG 17GT
I mean, is anybody going to say it? We have become like sheep here.
Spell it out for us, for us slow ones in the back ;P
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Old Oct 20, 2024 | 01:49 AM
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I built a very basic scoop with 1mm aluminium



Last edited by menfou; Oct 20, 2024 at 01:51 AM.
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Old Oct 20, 2024 | 05:33 AM
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I don't see a scoop. I see a deflector that doesn't seem to be guiding the air in any particular direction.
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Old Oct 20, 2024 | 05:55 AM
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Yes it's a deflector, something simple, who works better than the Tick
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Old Oct 20, 2024 | 08:49 AM
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Originally Posted by menfou
Yes it's a deflector, something simple, who works better than the Tick
Fast forward a few years....next owner of that car is on this site trying to identify "weird rattle" in the front wheel wells........
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Old Oct 20, 2024 | 06:19 PM
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Originally Posted by menfou

Yes it's a deflector, something simple, who works better than the Tick
Not sure what you have exactly from Tikt but their scoop has been tested and proven to be very effective. It would certainly be better than this deflector... Have some pics to share from the other side?
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Old Oct 20, 2024 | 06:57 PM
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I bought the Tikt because it was more efficient than nothing, it's true.
After only 1 session I completely lost my break, something who never happened with my GT3.

I checked a GT3 deflector and decided to try to make something simple.

I cut out a piece of cardboard to make the largest possible piece, which I then cut out of aluminum.

I then drove on the ctrack with the Tikt on one side and my aluminum scoop on the other side. The result was clear, the side with the Tikt was much hotter.
​​​
I sold my tikt and duplicate my aluminium deflector.

I didn't create my topic to talk to you about tikt or aluminum, but to give my opinion between McLaren, Porsche and AMG.
What is certain is that the wind-catching surface under the car is much larger with my deflector and that the disc is not enclosed.
This is a picture from my Porsche OEM deflector.


Last edited by menfou; Oct 20, 2024 at 07:09 PM.
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Old Oct 20, 2024 | 07:38 PM
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My point here isn't to argue whether the aluminum deflector is better or worse than the Tikt ducts. The Tikt ducts have two key design functions:
  1. They direct all scooped air to the center of the rotor, allowing the air to flow between the rotor plates and cool both sides evenly. This prevents heat buildup in the rotor core, resulting in faster heat dissipation. If you don’t cool from the center, the heat stored there will radiate back toward the outer surface (and the pads), making cooling less effective. A deflector-type system, on the other hand, seems to cool only one side of the rotor.
  2. The Tikt duct doesn’t add drag. The rotor vanes act like a powerful pump, pulling all the air that enters the large Tikt opening. It seems that over 90% on the air entered exits via the rotor's vanes.
While it's surprising that the Tikt ducts might seem less effective compared to some other scoops/deflectors for the GT, if your experience shows otherwise, that's perfectly fine.

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Old Oct 21, 2024 | 01:59 AM
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What track is the video from?

Last edited by Frafoss; Oct 21, 2024 at 02:00 AM.
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Old Oct 21, 2024 | 02:39 AM
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Originally Posted by Frafoss
What track is the video from?
Dijon Prenois in France.
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Old Oct 21, 2024 | 04:59 AM
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Originally Posted by menfou
Dijon Prenois in France.
Looks like a nice track! Is it often track days there?
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Old Oct 21, 2024 | 08:45 AM
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Originally Posted by Frafoss
Looks like a nice track! Is it often track days there?
Yes very often.
https://fr.europatrackdays.com/racet...-dijon-prenois
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Old Oct 21, 2024 | 10:35 AM
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Some of the BMW guys including me run these https://www.bimmerworld.com/Brakes/P...F8X-M3-M4.html

On the GTR, I installed the ANSIX scoops https://ansixauto.com/front-brake-du...z-amg-gt-gt-s/
I have used both products on the F80 and the GTR at Laguna Seca which is one of the most brake stressing tracks without any issues.
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Old Oct 21, 2024 | 11:31 AM
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Originally Posted by menfou
I bought the Tikt because it was more efficient than nothing, it's true.
After only 1 session I completely lost my break, something who never happened with my GT3.

I checked a GT3 deflector and decided to try to make something simple.

I cut out a piece of cardboard to make the largest possible piece, which I then cut out of aluminum.

I then drove on the ctrack with the Tikt on one side and my aluminum scoop on the other side. The result was clear, the side with the Tikt was much hotter.
​​​
I sold my tikt and duplicate my aluminium deflector.

I didn't create my topic to talk to you about tikt or aluminum, but to give my opinion between McLaren, Porsche and AMG.
What is certain is that the wind-catching surface under the car is much larger with my deflector and that the disc is not enclosed.
This is a picture from my Porsche OEM deflector.
I appreciate your response but please keep in mind that in a public forum you may hear questions you don't care for but help others in understanding your setup and results. Your experience with the Tikt scoops vs a handmade, strapped-on aluminum shield is surprising and thus pictures may help to underline your findings.

There are plenty of members that track various GT models and levels of modifications. Same for running against the cars you mentioned. Anything that works positively on a GTR on track is interesting info...
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Old Oct 21, 2024 | 12:32 PM
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Originally Posted by drroc
Some of the BMW guys including me run these https://www.bimmerworld.com/Brakes/P...F8X-M3-M4.html

On the GTR, I installed the ANSIX scoops https://ansixauto.com/front-brake-du...z-amg-gt-gt-s/
I have used both products on the F80 and the GTR at Laguna Seca which is one of the most brake stressing tracks without any issues.
The ANSIX was my first choice, but I bought the Tikt, because it looked better, wrong choice 😂
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Old Oct 21, 2024 | 12:41 PM
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Originally Posted by menfou
The ANSIX was my first choice, but I bought the Tikt, because it looked better, wrong choice 😂
But at least now we have a data point from someone willing to run Tikt on one side and a deflector on the other side
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Old Oct 21, 2024 | 04:23 PM
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Menfou - appreciate your replies and photos.

What method did you use to test the temperatures, and where -Exactly- did you place your temperature probes?

Yes, the video below is provided by the manufacturer themselves, TikT, but shows the temperatures in real time.Their well conceived design uses sound physics to optimize air flow and heat dissipation.




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Old Oct 21, 2024 | 06:04 PM
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Originally Posted by menfou
My comparison is based on original cars.
For my first track test, I had the original steel brakes with Tikt scoops.
Big disappointment.

I then installed Ferroro DS1.11 pads with BF Goodridge hoses + RBF700.
On the passenger side I left the Tikt scoops and on the right side I installed aluminum scoops.
The result is clear, simple scoops on the lower triangle are more efficient than the Tikt scoops.
I measured 30°C less on the side with the aluminum scoops.
320°C without scoop, 290°C with Tikt scoop
320°C without scoop, 260°C with aluminum scoop.
I no longer have any brake problems, I drove for 45 minutes without stopping, about 30 laps.
Now I'm real curious how you did you perform the measurement because all temperatures you mentioned are considered "cold" brakes... So either your measurement is wrong or you're not driving fast enough to get the brakes hot.
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