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991 GT3 info from the source!

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Old 07-27-2011, 12:44 PM
  #211  
savyboy
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Originally Posted by CRex
The high pressure fuel pumps proved to be a big challenge (and in some cases, disasters) for early adopters including BMW and VW.
They were/are a problem in the new Porsche DFI engine as well, I had a DFI failure on a 2009 C4S.
Old 07-27-2011, 01:07 PM
  #212  
sin911
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So is the 9A1 engine reliable and durable for track use/abuse?
Old 07-27-2011, 03:11 PM
  #213  
The Greek
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All I have to go off of is mdrums and I running the C2S. Absolutely no problems whatsoever with the cars, and to be honest, the lower torque coupled with a really nice linear powerband made it a real fighter for .1 GT3's....
Old 07-27-2011, 03:52 PM
  #214  
AYHSMB
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Originally Posted by sin911
So is the 9A1 engine reliable and durable for track use/abuse?
Cayman Interseries seems to be happy with it...
Old 07-27-2011, 03:56 PM
  #215  
chago996
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I think the non S Cayman and Boxster engines do not have the DFI. Only the S engines do. No IMS though and 4 oil pumps or like.
Old 07-27-2011, 06:56 PM
  #216  
Izzone
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Originally Posted by The Greek
All I have to go off of is mdrums and I running the C2S. Absolutely no problems whatsoever with the cars, and to be honest, the lower torque coupled with a really nice linear powerband made it a real fighter for .1 GT3's....
Lets be real honest

sure the C2 S is strong, and a real fighter against the "rumblebee"

I think that was more driver than car
Old 07-27-2011, 09:15 PM
  #217  
aussie jimmy
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when niko takes it to sebring, his viewpoint will change 180 deg.
Old 07-27-2011, 09:41 PM
  #218  
TigerStadt
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Originally Posted by Carrera GT
Right, the GTS pricing is its weakness (and it's not bad value compared to a new, equally equipped or as close as you can get with say a C2S or C4S if you want wide body) but it all adds up and suddenly you're at $120K+ for a GTS with PCCB and PDK (no option for lightweight headlights or battery, only for the GT2 style seats) and zero froufrou options (not even nav or whatever would make sense in a GTS with PDK (maybe say the $8K on PCCB and get the leather and nav and backup sensors or whatever.) But $110K, that's still crazy money compared to a GT3 and $120K+ compared to a 2011 GT3 RS unless you absolutely positively have to have rear seats. In which case, just get an '09 C2S, deal with a bit less power and pay maybe $70K? The wide body and power kit are not to be sniffed at, but for $50K? Hardly compelling. And I wonder how road car daily driver folks will feel about those bloody centerlocks. : )


Order no. Vehicle Prices*
997150 911 Carrera GTS $103,100
Exterior Color B4 Carrara White $0
Interior Color 28 Black Interior with Alcantara Seats $0
Performance 250 Porsche Doppelkupplung (PDK) $4,320
450 Porsche Ceramic Composite Brake (PCCB) $8,150
640 Sport Chrono Package Plus $1,480
P17 Sports Suspension (-20 mm) Including Mechanical Rear Differential Lock $950
Wheels 422 19" RS Spyder Wheels with Center Locking $0
Interior P03 Sports Bucket Seats $2,990
Destination Charge Amount $950
Vehicle price $121,940
+1 make mine a GT3
Old 07-27-2011, 11:45 PM
  #219  
ThatOneGuy
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Terrific thread!
Old 07-28-2011, 12:06 AM
  #220  
ChrisF
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Pete: to clarify - a DFI pump failure, correct?

I had a DFI Cayman S before the GT3 and tracked it quite a bit. The torture test I think was the AAA Speedway Roval where you're putting as much banked high G loading on the engine. The .1 CS motors would tend to go boom in similar situations due to cavitation and oil starvation. Not the .2. Zero issues with mine other than a HPFP replaced at about 4K miles. 17K miles when I sold it. Not exactly a torture test but a good indication they can take track conditions. I'm very curious to see if Porsche puts the 9A1 in the 991 GT3.
Old 07-28-2011, 02:01 PM
  #221  
Carrara
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I understand the discussion about making the engine competitive, but the reliability? Why is that in the discussion? The engine has been in constant testing for the last 5 years, at least. Porsche abuses the cars and engines over the span of 5 years much harder than any track day or motorsports event will. Porsche knows what they're doing. They wouldn't cancel the Mezger engine if they knew the 9A1 couldn't do the job.

And I know there really isn't any correlation, but the most successful LMP2 car of all time was a DFI Porsche.
Old 07-28-2011, 11:13 PM
  #222  
mdrums
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I tracked the heck out of my 2009 C2S....only warranty claim was a cracked weld on a header.

9A1 is a sweet engine. Yeah I'd rather have a GT3 but most of you know why I dont....but I have faith in the 9A1 for the future GT3 in being a sweet engine with lots of power and fewer issues.
Old 07-29-2011, 03:32 AM
  #223  
mooty
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u guys are GUESSING on things... it's pointless.
buy a 991gt3, track the **** out of it, then tell us if it's durable.
it's not that hard .....
Old 07-29-2011, 06:04 AM
  #224  
911rox
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Originally Posted by mooty
u guys are GUESSING on things... it's pointless.
buy a 991gt3, track the **** out of it, then tell us if it's durable.
it's not that hard .....
+1

bang, bang!!! Proof is in the pudding!!



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