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991 Turbo Turbo and Turbo S

991 Turbo or Turbo S Cabrilet

 
Old 10-05-2013, 06:34 PM
  #1  
wood930
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Default 991 Turbo or Turbo S Cabrilet

Interested in opinions, just sold my 997 TTS Cab; Buying 991 for European delivery next summer. I'm conflicted between another TTS or going with TT given its a Cab. Loved my 997 TTS, but after driving friends 997 TT Cab didn't find that big of difference. Given Cab will never be tracked, feel like ceramic brakes kind of waste.

Looking forward to hearing opinions -
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Old 10-06-2013, 08:53 PM
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I like my ceramic brakes on my 991S although it is hard to justify the price. No brake dust and they are very strong. I prefer the yellow over red. If you do get ceramics there isn't much of a price difference between the turbo and turbo s.
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Old 10-08-2013, 06:45 AM
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Originally Posted by wood930 View Post
Interested in opinions, just sold my 997 TTS Cab; Buying 991 for European delivery next summer. I'm conflicted between another TTS or going with TT given its a Cab. Loved my 997 TTS, but after driving friends 997 TT Cab didn't find that big of difference. Given Cab will never be tracked, feel like ceramic brakes kind of waste.

Looking forward to hearing opinions -
Actually, the PCCB is not really good for track racing since the wear will be high and replacement cost (discs) is pretty steep.
The choice between a Turbo and Turbo S is pretty easy if you know the options you want. If you would choose LED front lights, Sport Chrono (must have option), PDCC (must have option) and other goodies which are standard on the Turbo S, anyway, why not go the full way and get the Turbo S? Yes, the PCCB price is steep but PCCB looks amazing and furthermore, I wouldn't want to miss the very precise and firm brake feel. Yes, the standard brake is very good too but PCCB just adds to the experience.

Good luck with your choice.
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Old 10-13-2013, 04:10 AM
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wood930
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Thanks for replies. Will flip a coin as order date approaches.
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Old 10-14-2013, 11:10 PM
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The power output of the Turbo and Turbo S engines are a lot closer than the base specs indicate.
991 Turbo S
Max. Power 560 hp
@ rpm 6500 - 6750 rpm
Max. Torque 516 lb.-ft.
@ rpm 2100 - 4250 rpm
Max. Torque with Overboost 553 lb.-ft.
@ rpm 2200 - 4000 rpm
Compression ratio 9.8 : 1

991 Turbo

Max. Power 520 hp
@ rpm 6000 - 6500 rpm
Max. Torque 487 lb.-ft.
@ rpm 1950 - 5000 rpm
Max. Torque with Overboost 524 lb.-ft.
@ rpm 2100 - 4250 rpm
Compression ratio 9.8 : 1

Now let's look a bit more closely at the specifications:
Despite the apparent specified power advantages of the 991 Turbo S over the Turbo, 40 HP + 29 Lb. Ft. Torque, in continuous and overboost modes, an analysis of the data shows both engines are far closer in actual power.

The Turbo S's 560 HP is specced over a shorter 250 RPM (6500 - 6750) Range,
while the Turbo's 520 HP spreads over a wider 500 RPM Range (6000 - 6500)

The Turbo S's Max 560 HP is not reached until 6,500 RPM,
while the Turbo reaches its 520 HP at only 6,000 RPM, 500 RPM Lower than the S.

The higher continuous 516 lb.ft of Torque of the Turbo S spreads over a range of only 2150 RPM (2200 - 4000) while the Turbo's 487 lb.ft Torque spreads over a wider 3,050 RPM Range (2100 - 4250 RPM)
Both engines have the same 9.8 to 1 Compression Ratio.
Driven back to back, I doubt any driver would feel the difference between models.

So you may order either the TTS or TT and be as delighted with its performance without feeling deprived of power. They both are eminently qualified for Supercar status.
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Old 10-14-2013, 11:46 PM
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More complete and accurate Torque differences between the Turbo S and Turbo for continuous
and overboost Torque:
The higher 516 lb.ft of Maximum continuous Torque of the Turbo S spreads over a range of only 2150 RPM (2100 - 4250) while the Turbo's 487 lb.ft Maximum Torque rating spreads over a much wider 3,050 RPM Range (1950 - 5000) The Turbo's Maximum Overboost Torque Range is also wider, 1800 RPM (2200 - 4000) for the Turbo S, and 2,150 RPM for the Turbo (2100 - 4250 RPM)
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