Hi, I own a tuned Panamera Turbo and its fast,large and roomy, But not much fun , Recently I got to drive a 911 turbo on the street and a GT-3 on the track. Long story short Panamera got to go and I would like to get a used Turbo or Turbo S. whats the difference between the earlier 911 (997) and the 991 ? In addition I hear about Metzler engine in 09 ? I like the 2014 it is a little larger from what I see. if anyone can shed some light on this and educate me a little, That would be helpful Thanks S

 

• The 991 series cars (2014+) are an entirely different platform than the 997 series cars (2007 - 2013). It appears bigger visually, but in reality we are only talking about fractions of an inch. It has a longer wheelbase, which adds to the larger appearance.
• The 991 offers many improvements over the 997. It is more powerful, it’s faster, it’s more comfortable, it handles and rides better, it has better tech, etc. Having owned both, I could never go back to a 997. The 991 platform is better in every way.
• The engine in the first generation 997 turbos (2007 - 2009) is often called the Mezger engine (it was designed by Hans Mezger). It has a long history in Porsche Motorsport, and it is often considered one of Porsche’s best designs. It’s not without issues and potential problems, but it’s a very solid platform. That said, the 9A1 engine used in the 991 has proven to be very robust so far.
• The 997 Turbo (not the Turbo S) was the last Turbo generation sold with a manual transmission option. I you want a manual transmission, you’ll need to buy a 997.

Do do some research. Try to drive both cars. You’ll quickly see which one appeals more to you.

 

thanks I drove the 997 turbo-s, and it was fast and it was very loud inside, I drove the 991 on the track (gt-3) but i need to test drive the 991 on the street, I am leaning towards the later model 991 .

 

The 997.2 TTS has the same 9A1 engine as the 991's BTW. In fact, the 997.2 TTS has larger turbos, so if are going to mod it, it's good for more HP than the 991.1 TTS (700 WHP or so).

Some say the 997.2 is the last of the true 911 body styling and size. Last to have the more raw steering as well compared to the electric 991's.

Pricing on the 997.2 TTS's are also a good bit better value than the 991.1 TTS's

 

Don't get me wrong - I love the 997 turbo. My 997.1 turbo was one of my favorite cars that I've ever owned. You can't go wrong with either one. That said, my 991.1 turbo is my favorite car that I've ever owned. It's simply fantastic.

 

Oh don't get me wrong. I'd love to have a 991TTS!! I know it's a better car in many ways. Just not $30-$40K Difference (for me at this time.

But the 997.2TTS I think was a good step above the 997.1 also.

 

Dennis nailed it. BTW the 991 GT3 is NOTHING like the 991 Turbo. You should drive a 997 Turbo and a 991 Turbo to compare.

 

Yes I agree, GT-# , not the same car. what is 997.1 and 997.2 ?

 

.1 Mezger, .2 dfi motor. I am about 90% on that. Someone else can chime in.

 

-Yes, 997.1 TT's has the 3.6 Mezger motor and had 6MT's or the Tiptronic Tranny. 2007-2009 Here in the states ( 2009 had the 997.2 interior upgrades but still had 3.6 Mezger). 480 HP. ( Awesome motor but had the unfortunate coolant pipe issues that can be quite expensive to fix)

-997.2 TT / TTS's have the 3.8 (9A1) DFI motor with the 6MT or PDK tranny for TT's ONLY (500hp) and the TTS's ONLY (530 hp) came with the PDK tranny. Also had an upgraded PCM and interior pieces. (Very reliable platform and wicked fast with the PDK tranny option).


There are other small differences but that hit the high marks I think... Someone else can correct me and / or add to it.



David

 

This is also why I was explaining my thoughts on buying a 997.2 TTS vs. the 991.1 TTS (There is a 991.2 version starting in 2017 that even better but again, more expensive).

The 997.2 TTS is Very close in performance to the 991.1 TTS and has the same engine and PDK tranny. BUT, the PDK is a bit nicer in the 991's due to just being newer and Porsche continuing to advance tech / software.

But the pricing on 997.2 TTS's and 991.1TTS's are still $20K - $40K lower (than the 991.1 TTS's). In case money / budget is a "Thing" like it is with me.

If not about money, Hell, Go buy the nicest lowest mile 991.2 TTS you can find!!!

 

 

Excellence Magazine article 12/13 issue (pp 62) interview w/August Achleitner, director of 911 product line, stated thicker piston crowns compared to the 997 Turbo were changed for the 991 Turbo to withstand "greater combustion pressure" w/no change in in the 9.8:1 compression ratio.

 

Having owed 2 2007 TT's, a 2008 TT Cab and 2010 TT Cab and now a 991.1 TT cab I would wait and get a 992 TT when it comes out as every new model Turbo gets better all in phases. But if you cannot wait get the 991 TT in either form as some are getting as low as 110k CPO'd.

 

Good to know and thank you for the info for sure. Still basically the same platform though.

Cummins (diesel) used to make small improvements like that during generation models but in the long run, they weren't needed on a STOCK engine. We took "Stock" cummins engines / pistons to 60-80 psi of boost and close to (sometimes above) 1000 WHP / 1500+ WTQ on a stock motor.

My truck made 1050 WHP / 1700 WTQ with stock pistons / rods but the pistons were cut .100 to reduce compression a bit. That was at 75 psi of boost.
7100 lb. truck running 10.70's @ 130 MPH.

Seeing as how the 997.2's go 700 WHP with good tuning and seem to last, I'd say the 991 piston change wasn't a "huge" need for stock 991.1 or 991.2 combustion pressures. BUT, GOOD to have none the less for people who mod.

I'd say Rod strength would be the first to go for most modded cars.