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Manthey Upgrade Kit OEM Suspension - GT2 RS

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Old 09-21-2022, 07:34 PM
  #31  
juanpablo046
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Originally Posted by Mvez
Just realized the OP was talking about OEM upgrades using only those few parts pictured, sorry for my misunderstanding, I thought you were talking about their 3/4 way suspension kits....

Sorry, so far just this to align the car properly. Next year I'll upgrade the shocks with the MR kit (to be sure warranty is still valid I'm not considering any other brand).
Old 09-22-2022, 05:46 AM
  #32  
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Originally Posted by Nizer
Anyone know the spring rates for the Manthey GT2 RS KW's?
120Nm/mm front
170Nm/mm rear



Old 09-22-2022, 05:25 PM
  #33  
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Originally Posted by Tom@TPC Racing
Thanks for the info. I'd have thought to raise the OEM spring collar to add more clearance(i.e. raise the front ride height). Interesting that the MR choose spacers for the task.
this is AFTER the upgrade... maybe way worse without the spacers





Originally Posted by Mvez
Just realized the OP was talking about OEM upgrades using only those few parts pictured, sorry for my misunderstanding, I thought you were talking about their 3/4 way suspension kits....
MR is considered OEM now and 100% covered by standard Porsche warranty, so KW 3/4 way is OEM if installed at Manthey or Porsche dealer as tequipment upgrade.

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Old 09-22-2022, 10:31 PM
  #34  
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Originally Posted by pepinozaur
this is AFTER the upgrade... maybe way worse without the spacers







MR is considered OEM now and 100% covered by standard Porsche warranty, so KW 3/4 way is OEM if installed at Manthey or Porsche dealer as tequipment upgrade.
Ouch, you did setup and installation at Manthey, right?

Old 09-23-2022, 01:36 AM
  #35  
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Yes, but that happens only at the Ring and only bellow 7:40m laps or so, lots of compressions and jumps that are only possible at the ring and only if running at a minimum certain pace.

On all other tracks, the car runs fine. No touching anywhere.

PS:: I think full mr suspension will fix that, I am at the Ring for a week, and going to check that.
All gt3rs non MR ring taxis have the same problem, I checked last time 3 of them... all the same.
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Old 09-23-2022, 04:05 AM
  #36  
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True. Using complete MR kit, with 6.50's laps, nothing touches inner arche. Useless to say the car is much more stable with the complete suspension especially on the Nordschleife.
Old 09-23-2022, 06:42 AM
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Originally Posted by smookey
True. Using complete MR kit, with 6.50's laps, nothing touches inner arche. Useless to say the car is much more stable with the complete suspension especially on the Nordschleife.
Did you notice any difference in best lap time on other tracks with the MR coilover kit ?

Old 09-23-2022, 07:59 AM
  #38  
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Originally Posted by Maxi_z
Did you notice any difference in best lap time on other tracks with the MR coilover kit ?
definitely. Car is less bumpy, more stable.
it is a must have on the 2RS from my opinion
Old 09-23-2022, 09:58 AM
  #39  
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Originally Posted by pepinozaur
this is AFTER the upgrade... maybe way worse without the spacers
Adjustable caster bushings like the ones shown in pic below will fix this.
The OEM 2RS and 3RS only have the caster bushing hole in the middle.
As you add more shims for camber it causes the wheel to move forward.
Depending on how many shims added the forward movement can be up to 10mm closer rubbing the fender liner.
Having adjustable caster bushings will gain back the clearance.
However, I find the OEM RS metal caster bushing to be extremely difficult to remove. The non-RS rubber caster bushing is a lot easier to remove.
Also stiffer springs and dampers will reduce the rate of movement during compression travel.


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Old 09-23-2022, 10:39 AM
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Originally Posted by Tom@TPC Racing
As you add more shims for camber it causes the wheel to move forward.
Depending on how many shims added the forward movement can be up to 10mm closer rubbing the fender liner.
Having adjustable caster bushings will gain back the clearance.
Correct but MR usually invert the OEM top mounts to get more camber instead of using a lot of shims to the lower arms ( so the top of the wheel is more inwards )

Maybe this way it makes less change to the OEM caster angle and in that case the adjustable bushings could not be required can anyone confirm that ?



Old 09-23-2022, 11:51 AM
  #41  
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Originally Posted by Maxi_z
Correct but MR usually invert the OEM top mounts to get more camber instead of using a lot of shims to the lower arms ( so the top of the wheel is more inwards )

Maybe this way it makes less change to the OEM caster angle and in that case the adjustable bushings could not be required can anyone confirm that ?
Yes, flipping the OEM top mounts from side to side to achieve more camber doesn't move the wheel forward as much as by adding lower shims for a given camber number. As the camber number becomes more aggressive it is more ideal to have separate caster adjustment same as on a Cup car.
Old 09-27-2022, 07:05 PM
  #42  
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I had the first trackday with the upgrade and Cup 2R today.

Camber helps a lot but with the higher grip of the Cup 2R stock suspension starts to feel soft.

Cup 2R peak of grip lasted for around 35 min of track time, now I'd say it feels better that a Cup2 but best grip was gone fast.



Last edited by juanpablo046; 09-28-2022 at 02:29 PM.
Old 10-08-2022, 11:40 AM
  #43  
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i would go with more camber.



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