my TT didn't come with the diff lock option when i bought it. I called the Porsche service Center in Qatar and i was told that they cannot order that part. they told me that it can only be ordered as an option on new cars. does this make sense?
and does any company make this part other than porsche? maybe Techart etc..

Thanks alot

 

Quaife, maybe

 

Yes, to retrofit the LSD, the cost would be prohibitive, imo (over 10k).

 

Less than $2K for the Quaife LSD so if it can be done I imagine it will be considerably less than $10K.

 

Here's some more info for you - https://www.6speedonline.com/forums/...d.php?t=109542

 

thanks alot guys. I'll look into getting a Quaife LSD. Will it make a huge difference in handling? or should i get sticky tyres for track days instead?

 

It depends how serious of a track driver/racer you are.

The LSD will deff help on long corners where traction is needed.

I would just some slicks 1st. Your still going to need em' anyways.

 

I bet to replace an OEM LSD is going to be a lot more than $2K.

 

I'm not sure you can use the Q unit in the 997TT platform. Guard Transmissions makes a racing lsd 1888 89 GEARS, but it's a lot more than 2k, also try www.powerhausII .com
they were coming out with a unit, again, a lot more than 2k. Honestly, you'll probably never really need it, just get some good rubber and don't worry about it would be my advice.

 

i guess i'll go with some sticky tires and put the LSD money towards some performance parts. i can always make up the lost corner times in the straights

 

You should read up on the differences between torque biasing (Quaife) differentials, and limited slip differentials (LSD). The Feb. 2001 Issue (starting at page 10) of the Porsche Owner's Club Magazine has a great article....

http://www.porscheownersclub.com/pdf/2001/february.PDF

I think the thing you want to be most concerned about is that while a Quaife has great characteristics under acceleration, it's characteristics are not as good as a LSD under braking. That is, a Quaife becomes "open" under braking which provides less stability under turn-in conditions, essentially the car feels like it has more oversteer. A LSD will make the car feel much tighter during off throttle turn-in, and you can do much more corner braking. This will probably mean nothing to you unless you track the car.

The article (link above) provides a much better explanation than I can provide here. Good luck.