CincyScott

I'll be the first to admit I don't drive my 993TT past 7 tenths. However, for those of you who do, how is the top speed stability on them? Is there a speed they start getting goofy?

I had my LeMons racer (a Saturn Coupe) up to 100 the other day and it made me think I was gonna die . I thought to myself, "is this really smart??"

It then occurred to me after my life was spared that the 993TT is probably like silk to a point too. Anybody got any input?

(*Standard disclaimers about obeying speed limits at all times, blah blah blah)

TB993tt

Below is the lift profile for the 993tt from Porsche numbers. No downforce but little lift with ~30kg lift on the rear axle at around 200mph which is pretty negligable with 950kg to play with.



To your question specifically. First time you go over 150mph GPS speed the car wanders around so much that you are terrified. 10 more runs at this speed and you can cruise at it !

Faster than 150, yup more terror and over 180 mph GPS there can be violent swaying side to side and if there is camber on the road its brown trouser time.

Do this enough times and like most things you actually get used to it and can thunder round a closed runway time after time and the car does actually stay on the road

Oh and forgot to mention, the sunroof pops open at the front at about 185mph, you can hear it on the first vid

http://www.youtube.com/watch?v=75G3gk2-XMU
http://www.youtube.com/watch?v=tmsT6I0iPmM

CincyScott

Super cool! Thanks for posting this. What is RS Tuning? (probably a fine opportunity to stfa, but I'll ask anyway)

Turbodan

I think suspension will have a lot to do with this answer.

993MAN

I will never know.

Jean

I think it is TB993TT's Datsun tuner http://www.rs-tuning.de

Looks like 993TTs with street GT2 bodywork don't tend to fly out at speed, unlike the sunroof!

This car runs on Moton suspension, it is considerably lowered however and with a good rake angle, as it should be.. 236mph in one mile.

http://http://www.youtube.com/watch?...eature=related

Texas993

I have pss10s on my turbo r with a pretty low ride height.

I have gone 160-180 numerous times. No drama, just wind noise. Very stable.

My car was tested over 200 on the autobahn when it was converted to a turbo r by Alois himself. That was 10 years ago, not sure it still pulls that hard, but it has to be close!

bb993tt

I saw indicated speedo speeds of 190+ on the front straight of the 'ring in my turboR (lowered with Roock Racing suspension). Car was moving quite a bit from side to side which was a deffo attention grabber. I was also at the vmax event when MOD500's sunroof did it's famous James Bond DB5 impersonation.

Chuck W.

I love threads like this. Mainly, because I can live vicariously through the eyes of those that have driven that fast in their turbos. Thanks for sharing.

DM993tt

I have my car lowered significantly on PSS9 with 1000lb rear and 650lb front. It sits planted and pulls strong to 165. I've never really had it any faster only because there arent any tracks I've driven on that have enough room to, and the highway is not the place for me to find out - touched 170 once but risks are too high. But I doubt with my suspension setup it would feel much different as I found its top speed.

Robert993TT

The surface at the Nurburgring is generally uneven. Assume you mean straight past the toll station. There I have driven in 260+ km/h and the car moves a lot. There is no problem to get the car up close to 300, I believe, but it does not feel safe. I have noticed the same tendency driving on the autobahn on my way home from the ring when I ran out of time to the ferry. Over 260 km/h the car felt a bit unstable. Maybe it's just a feeling that presents itself. One must be very concentrated as opposed to driving a BMW M or Mercedes AMG under the same conditions. They feel very stable at speeds around 250 km/h. My 993tt is lowered and I have a bit more aggressive wheel alignment.

The indicated topspeed on a 993tt is over 300 km/h. Equipped with X50 maybe a couple of km/h more.

bb993tt

Yes, that was the location . This was on a Manthey Racing (non-public) sponsored day, so the entire straight was available.

993RUF

Hey Patrick,
I met the orginal owner of my car and he also told me that he and Alois had the "R" up to 204+mph & very stable. That Alois has a need for speed !
As we all do

Texas993

It sounds like a high speed autobahn run was part of the conversion package! I keep in touch with my car's orignal owner and get a new story every time.

bb993tt

Every car converted at P'hausen gets a final autobahn run. Just nowadays it's done by H-P Lieb. RUF euro-geared cars could see 200 mph; others wouldn't, or at least I wouldn't think they could.