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What did you do to your 991 turbo today?

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Old 07-21-2024, 06:11 PM
  #7636  
Big Swole
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Didn't Fadi from Boost It Forward do an AIM build with GT2RS turbos on his 991.1 TTS?

He made great power. Haven't seen anything out of him in a long time.




https://www.youtube.com/@BoostITFORward




Yup....He talks about it here:



Last edited by Big Swole; 07-21-2024 at 06:12 PM.
Old 07-21-2024, 06:19 PM
  #7637  
onfireTTS
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If they were a bolt on , I would have gotten weak and already installed a set out of curiosity.

Nothing fits. Need GT2RS manifolds, exhaust, and possibly the oil and coolant hoses. If you could find a donor car , it might be possible.

If I ever develop a leaker , Sam’s Stage 5 turbos are a no brainer.
Old 07-21-2024, 06:33 PM
  #7638  
2fcknfst
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Exactly the problem I have on the 996 at the moment, passenger side is leaking pretty bad.

Gt2rs turbo upgrade sounds like it'll be quite spendy.
Old 07-21-2024, 06:33 PM
  #7639  
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Originally Posted by Big Swole
Didn't Fadi from Boost It Forward do an AIM build with GT2RS turbos on his 991.1 TTS?

He made great power. Haven't seen anything out of him in a long time.




https://www.youtube.com/@BoostITFORward




Yup....He talks about it here:


https://www.youtube.com/watch?v=R9WFlXEMOGk
I hadn't seen that, pretty impressive.
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Old 07-21-2024, 06:59 PM
  #7640  
flsupraguy
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Just install 67mm turbo's. Prior owner installed full gt2rs body so added 67mm turbos, intercoolers, ohlins, girodisc, and straight pipe exhaust....

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Old 07-21-2024, 07:48 PM
  #7641  
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But that only increases the Compressor side.
Old 07-21-2024, 07:57 PM
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I see 9 and 7mm increases respectively... Or am I missing something?
Old 07-21-2024, 08:12 PM
  #7643  
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Originally Posted by 2fcknfst
I see 9 and 7mm increases respectively... Or am I missing something?
You are correct. I meant adding a 68mm TTS upgrade mentioned above only addresses the Comp side.
Old 07-21-2024, 08:34 PM
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Gotcha. Even with the expense, may be a neat upgrade.

It is always appealing when you can graft on OEM parts for performance increases.
Old 07-21-2024, 08:48 PM
  #7645  
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Originally Posted by 2fcknfst
Gotcha. Even with the expense, may be a neat upgrade.

It is always appealing when you can graft on OEM parts for performance increases.
EXACTLY ! If the GT2RS was AWD……I definitely would have one. Same thing, plus reliability issues keeps me away from a 750S. But that platform has some awesome tech that keeps me interested.

Last edited by onfireTTS; 07-21-2024 at 08:50 PM.
Old 07-21-2024, 10:10 PM
  #7646  
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Originally Posted by Foosh
As astounding as the GT2RS is, I'd much rather have the Turbo S because it is much better suited to daily use. The combination of comfort and insane performance is the sweet spot for me.
yeah the GT2RS is not a comfy car by any means, and i would have kept my 911TT but having a very high hp R8 the turbo just didnt fit the bill anymore and was not getting driven except at the track, and honestly i'd prefer have a GT3 for that battle.
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Old 07-22-2024, 09:52 AM
  #7647  
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Originally Posted by 2fcknfst
Same on my 996, I used the Rennkit mechanical ones, very clever design and will last for ever.
I’ve seen those.

I’d buy four sets if they made 991/981/718 versions.


WRT to OE/OEM struts…

Starting in the mid 00s, the lifetime of all the struts (OE, OEM, etc.) decreased significantly. Whereas prior, you might have to replace a set after 5 years, or 20 years, or never, now it seems *all* (*) of them are designed for 3-sigma 2 years. So, very few fail before two years, but many, many more fail by 5 or 6.

In my experience.

(*) For Porsche.

I have heard similar “two year” stories from multiple sources with regard to new and rebuilt parts.
Old 07-22-2024, 01:49 PM
  #7648  
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Originally Posted by onfireTTS
EXACTLY ! If the GT2RS was AWD……I definitely would have one. Same thing, plus reliability issues keeps me away from a 750S. But that platform has some awesome tech that keeps me interested.
Although I really appreciate the engineering that goes into any McClaren, there have been some pretty bad stories regarding reliability - particularly electrics, however, I do recall someone lunching a tock 720s motor somehow.
Old 07-22-2024, 01:53 PM
  #7649  
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Originally Posted by worf928
I’ve seen those.

I’d buy four sets if they made 991/981/718 versions.


WRT to OE/OEM struts…

Starting in the mid 00s, the lifetime of all the struts (OE, OEM, etc.) decreased significantly. Whereas prior, you might have to replace a set after 5 years, or 20 years, or never, now it seems *all* (*) of them are designed for 3-sigma 2 years. So, very few fail before two years, but many, many more fail by 5 or 6.

In my experience.

(*) For Porsche.

I have heard similar “two year” stories from multiple sources with regard to new and rebuilt parts.
Plus, they absolutely look the part...



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Old 07-22-2024, 02:00 PM
  #7650  
Thicc911Turbo
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Does anyone know the internal engine differences -- if any -- between 911 Turbo, Turbo S and GT2RS (I'm thinking specifically of the 991.2 but perhaps there's a broader answer too...)?

Can one literally just bolt on a set of GT2RS Turbos (with a tune and matching components) on a 991.2 Turbo and approach that level of power with the engineered-margins Porsche gave the GT2RS?

While I'm asking like a newb, what about the trans? For the 992 Turbo S Porsche upgraded the PDK to handle the increased power the new S makes, so what internal differences are there between the 991.2 PDK in a Turbo, a Turbo S and a GT2RS?


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