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RS: Rubbing front and rear

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Old 05-10-2016 | 12:18 PM
  #31  
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Originally Posted by markow
my march 2016 built has used 0.75 liters of oil in 750km at break-in revs.
pretty ridiculous, no?
in my F458 italia i never had to top up oil in 29K km.
peter
Compared to mine 4 dl / 5500 km of which 2450 are on track: Yes.
Old 05-11-2016 | 08:00 AM
  #32  
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Is part of the bulletin to remove the plastic mesh in the forward section of the front fender liner? The mesh that separates the tire from the front side radiators and fans?

If so, one should note that the regular GT3 has a propensity to shoot rocks off the tire towards the radiator and has been known to pierce the radiator.

2014 GT3s were delivered with no mesh, fine mesh was installed via service bulletin.
2015 and 2016 GT3s were delivered with a medium mesh. There has been more than one medium mesh car that still managed to pop its own radiator. I was present for one during the last Smokies event.

On my personal 2015 I added small stainless mesh on the radiator side of my factory mesh.

Not sure if this applies, but certainly be wary of what is getting removed and potential side effects.

Ryan
Old 05-11-2016 | 08:23 AM
  #33  
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Originally Posted by reidry
Is part of the bulletin to remove the plastic mesh in the forward section of the front fender liner? The mesh that separates the tire from the front side radiators and fans?
No it is not. It is the mesh beneath the fender vents:


Old 05-11-2016 | 08:50 AM
  #34  
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Originally Posted by Kobalt
No it is not. It is the mesh beneath the fender vents:


A great Mod Would be to have someone make the vented liner without the inside section solid. I believe this is where most of the increased downforce comes from. The inner half is actually not vented when the mesh is in place. If one could remove the OEM one, and replace with a full mesh, one that doesn't need removal, then I think most would swap to a "track mesh" and never remove.
Old 05-11-2016 | 12:19 PM
  #35  
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In a nutshell

Measure for the Entire Vehicle:
Perform alignment. Make sure height is never less than the required vehicle height at front and rear axles

Measure for the Front Axle

Remove upper grilles in the wheel housing liners ... for track use. Re-Install for raod use.

Measure for the Rear Axle

Flare the wheel arch on the rear side panel over an extended area to prevent...

They privode guidance for the work. This is a 9 pages bulletin...

Hope it helps
Pierre
Old 05-11-2016 | 12:39 PM
  #36  
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Originally Posted by PierreTT
They privode guidance for the work. This is a 9 pages bulletin...
You don't happen to have a copy?
Old 05-11-2016 | 01:24 PM
  #37  
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Originally Posted by PierreTT
In a nutshell

Measure for the Entire Vehicle:
Perform alignment. Make sure height is never less than the required vehicle height at front and rear axles

Measure for the Front Axle

Remove upper grilles in the wheel housing liners ... for track use. Re-Install for raod use.

Measure for the Rear Axle

Flare the wheel arch on the rear side panel over an extended area to prevent...

They privode guidance for the work. This is a 9 pages bulletin...

Hope it helps
Pierre
One hopes this is all being done at the factory now.
Old 05-11-2016 | 02:39 PM
  #38  
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Originally Posted by Kobalt
You don't happen to have a copy?
No, sadly.
These are the "side notes" I took while looking at it. Nothing very scentific as I saw.

It was published April 20th as far as I remember. I also hope they "fix" this at factory now...
Old 05-11-2016 | 09:04 PM
  #39  
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Originally Posted by TRAKCAR
Exactly what mine did.

Porsche gave me new revised front fender liners and a secret setup.
Now it's fine. Even at Sebring.
Sure Sebring is bumpy but there is no load. Turn 1 at Road Atlanta will let you know every time if your clearances are OK
Old 05-12-2016 | 05:03 PM
  #40  
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I think there is more (shorter) compression over the big bumpes at Sebring.
T1 is much less compression that at the Ring and eventually it stopped rubbing at the Ring.
Still if it doesn't rub at the Ring, it shouldn't rub anywhere and if the car works at the Ring is should work everywhere. The car should just come with street and Ring setup numbers. Done.
Old 06-09-2016 | 09:18 PM
  #41  
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I just noticed my new RS front tires rubbing against the back part of the inside wheel well when at about 50% to 100% lock range on both front tires. This is when the car is at rest. Only 250 miles on it. 100% stock off showroom.

Are you guys seeing this problem only when tracking the car or always? Trying to see if my issue is the same as the tech bulletin addresses. Looks like it's going back for service after just 2 weeks home.
Old 06-10-2016 | 01:52 PM
  #42  
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Originally Posted by Nizer
One hopes this is all being done at the factory now.
No kidding. We are talking about a 200K car designed for track use. Love Porsche but sometimes...
Old 06-10-2016 | 02:36 PM
  #43  
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Originally Posted by Kobalt
No it is not. It is the mesh beneath the fender vents:


Does removing that mesh make it more likely that a rock can get through? Every time I am turning slowly in my GT3 I can see little rocks shooting up. Assuming that is what the mesh is for here.
Old 06-10-2016 | 03:44 PM
  #44  
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Originally Posted by robmypro
Does removing that mesh make it more likely that a rock can get through? Every time I am turning slowly in my GT3 I can see little rocks shooting up. Assuming that is what the mesh is for here.
Yes. Much more likely to see debris or rocks shoot up there without the mesh
Old 06-21-2016 | 08:54 AM
  #45  
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I finally got my car to a Porsche Workshop:

They got an advice from Porsche for a specific setup for every 991 GT3RS to avoid to much scratching of the fenders. It is 2mm higher in the front and 5mm higher in the rear than my current setup (factory setup).

The car is currently at the shop and I will use it next week so I don't know much more.

Soon it will be a perfect off-roader...


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