Mikelly

Yup, Should have mentioned this in my last post... I've got a built gearbox and a Guards LSD. Wouldn't think an open diff and RWD conversion would make for a happy balance to these cars...

Mike

Gary R.

Back to life with this, as prices for 996 Turbos are way down and they share the 996 GT3 engine type (true dry sump) with a lot more power this is an interesting choice for a "drive it to the track" car.. Do the 996TT all not come with LSD due to the AWD? No big deal to add one if I remove the FWD stuff I assume?

"02996ttx50

yes, they don't... and perhaps even more timely if you're considering it? read mkellys response just before yours. this is exactly what you wan't to avoid. namely running rwd "open" diff. it is utterly pointless and even "less" a car than awd is/was.

you MUST include an lsd in this conversion.

Gary R.

I did read Mike's response and agree it would be a must, just wasn't sure if all TT's came with open diff as i'm not AWD saaaavy.. Thanks for the info. For me the car would become a GT3 turbo... I could win me a LOT of DE's!

Wealth Manager

If you are racing on a track and convert to RWD then you def need a LSD. Street driving no.

Only the GT2 model came with a LSD....

"02996ttx50

the "open diff" situation only becomes an issue if you convert to rwd from awd. if you convert to rwd without installing an lsd you will often find yourself spinning one of the two wheels.

i think the best of all worlds could be summed up with jeff zwartz and his bbi built turbo powered cup car for pikes peak. now that is a seriously purpose driven car lol

"02996ttx50

that being true depends entirely upon how and what "streets" you drive.

Ahmet

Not quite that simple. The 996 turbo doesn’t have adequate brakes or brake cooling for serious track work. It’s also a little short on rubber in the front, is rather softly sprung and a bit too heavy as well. You’d be better off picking up a GT3 or GT2. The GT3s are very satisfying to drive on track with the high revving engine and non-turbo throttle response by the way.

Tuxiemama

I still have an open diff and corner like a crazy man (on vacant roads)... I'm actually having more WOT wheel spin on one side

On a track it is essential but on the street not so much.

I love the RWD with GT2 specs

"02996ttx50

that is less true in reality, than it is in internet catch phrase speak. not directed at you andrew, per se. just a comment about how and when it pays to have one in the car and whether or not it is necessary for "street" driving vs track time.

but anywhere and anytime you could/would spin wheels, a properly outfitted tt that is rwd and has an lsd, will help to eliminate any excessive wheelspin situations. i drove my current car open diff with simply the cardan removed to evaluate for myself what exactly power exclusively to the rear wheel(s?) lol would be like, prior to the addition of the wavetrac i use now, and it's night and day. one must run either awd ( as the car came ) or rwd with an lsd fitted. there is no workable compromise as there is simply too much power to the rear wheel(s) otherwise for the power to be properly applied in an rwd configuration.

in my limited experience with both.

Gary R.

I agree, LSD required for 2WD, especially since I would never leave well enough alone and look for some tuning mods to up the HP and brakes. The prices are just too attractive not to give this serious thought. What's a new Guard LSD installed? Set of big (steel, not Ceramic) brakes? Bolt in roll bar? I'm sure there is also a lot of extra weight that can be removed while keeping her streetable.

May even keep it AWD and make it my DD, who knows!

Tuxiemama

I hear you all

Oh, another mod added to my list and onto another slippery slope !

"02996ttx50

...it never freakin ends, does it... just when i get on top of any/all mechanicals to distract me for a few weeks/months allowing me to focus on something purely cosmetic, i'll get a grand idea like "hey! i could use a new windscreen" or some such thing. i just never ends......

powdrhound

Guard LSD will be in the neighborhood of $4K installed. 997GT3 RS 380/350 brakes with floating 2 piece rotors and all the trimmings including larger MC and vacuum pump will come to about $10K. Bolt in roll bar about $1500. I've removed close to 300 lbs, with fuel car comes in at a little over 3200 and still has full carpeting.