Hello, everyone

I am looking for a 997.1TT, manual, and sometimes I see that some cars have a shortshifter and/or LSD installed from factory.

I do not do any track, just use cars as daily drivers all year round and sometimes go for spirited driving in the mountains.
Therefore I wonder if these options are critical when buying a 997TT.

Is LSD important at all and what advantage does it bring?

Is the gearshirft without shortshifter much longer and looser or is it still perfectly ok not to have a shortshifter?

Thank you in advance for your help!

 

I had a factory LSD when I bought my 993 new. It was a huge plus for mountain twisties. I installed a Guards LSD when the OEM plates wore out at about 80K miles, maybe earlier.

The current 997 traction management does virtually all the 993 LSD functions, particularly with AWD. Maybe better, so I would not reject a car that did not have the LSD.

 

Hi, Terry.
Thanks for the reply!

I do not reject, quite the opposite, I want to have both options! The problem is that some interesting used cars do not have either or both of the options (most often they lack diff, but sometimes also the factory-installed shortshifter is missing), so I wonder if their absence should be a deal-breaker for a guy who loves manual transmission and spirited driving in the mountains from time to time.
Also, I am looking at 2007-2008 997TT, maybe the LSD on these is different from what is on the facelifted 2010- model? I see you have 2008 model, so what is that traction management you are talking about and why then Porsche had a mechanical LSD as an option if the traction management already acts as an LSD?

 

What I meant was, do not reject a car without the LSD. Nice to have, but not got to have. Absence is not a deal breaker.

 

Don't let either be a deal breaker, a short shifter is quite easy to install (get the Porsche GT3 one) if you don't like the stock gear throws.

Given the AWD, and PSM (Porsche Stability Mangement) on these cars, you won't even miss an LSD. Installing one will make the car more sensitive to off-throttle oversteer. I wouldn't go that route unless you track the car a lot.

As a reference I currently have a 2007 Turbo.

Good luck and cheers.

 

Thanks, 512bb.

So higher propensity to step out when getting off gas due to LSD?
What other disadvantages does LSD have?

(I now found a 2007 model with shortshifter, LSD, Adaptive Sport Seats, Sport Chrono).

 

I had an 07 TT with LSD and now have an 08 TT without LSD - I can't tell the difference but then I don't track the car. SS can be easily added after the fact. Again, I've had both - SS and stock and actually prefer the stock.

 

How common is the LSD option on these cars????

 

^
I suspect not very common. It adds little to the already excellent traction control on a TT, and most buyers in this demographic don't understand how it works anyway.

 

LSD should have really been standard and not an option on the turbo. I got it and think it's a plus to have...

 

997 turbo 2007-2009 had an LSD option (codeI220) for the G97.50 transmision. The LSD was 22/27 %.

The GT2 and the GT2RS had a std LSD for the G97.88 gearbox with 28/40 locking %.

The 2010-12 turbo with the G97.55 manual or CG1.50 PDK again has the LSD as an option.

They lowered the locking rates, in the newer models, so that the LSD works harmonically with the electronic driver aids.

I wouldn't buy a 911 without an LSD.
But then again I will never buy a 911, unless there is a known way to kill all nannies. : )

 

Paul Guard sold his company a few years ago, and I don't know if the new company

http://www.guardtransmission.com/

sells an LSD for 997 TT, but here is the work of art I had on my 993