Jussi

tell me more about that? In what way it is not a good choice? aero&downforce, handling, high speed driving, trackdays - or what?
I have no other info about it except it is cool/best looking..

pete95zhn

Jussi, have you been in contact with Juha? ( This is his build thread: https://rennlist.com/forums/993-turbo-forum/326765-engine-rebuild.html ). It was dynoed 434.1 kW / 787.5 Nm @ 1.1bar / OAT +2 ( both crank, not wheel ). At OAT +29 550hv and 750Nm @ 1.1 bar.

Then there's this third 993 turbo project going on nearby, with EvoMS tuned GT2 engine, came in a crate straight from AZ...

TB993tt

I think MOD is reffering to the information given to me by Marc Bongers who works for Ruf when I enquired about the effectiveness of the Turbo S set up and then about the CTR2 front spoiler, since he has detail about Cds in his book. Here is the reply he sent me:


thank you for your e-mail. I do not have any aerodynamic figures about the down force of the 993 turbo S. I know, that the additional front spoiler, that is fixed on the front bumper and the bi-plane rear wing improve the down force. The Cd and the front surface is the same as the standard car. Maybe you can get some information from the factory Porsche direct.
I would not recommend the CTR 2 front and rear bumper any more.

Jussi

Yes, I know that another Juha very well. We are friends and have been sharing our cars' info a lot. He is the best Porsche slalom driver in Finland. I was in Jurva (Botniaring) race track last week to follow his marvellous driving.

Is that third 993 turbo coming to Finland or Sweden?

Jussi

Thanks for that info!
I have also those Turbo S spoilers in my garage waiting installations but in last months I have been wondering that RUF front spoiler.. but now I can return my original plan and save +2000 euros in that RUF front spoiler..

TB993tt

I guess there was a language problem somewhere or you didn't read the "excuses" thread properly: https://rennlist.com/forums/showthre...hlight=excuses
The 520hp was for the runs I did at that vmax - read the thread and all will be revealed. The 6.9s run was done at a later date with full power resumed courtesy of an intercooler sensor lead and "favourable" conditions
Whilst there is still mockery about from people who think a 250kph run (in isolation without looking properly at impending IAT issues) reveals "Porsche hp"
then my "curves" are still top secret

TB993tt

Yes that was my plan also, the CTR2 spoiler is great looking and IMO looks awesome with the Turbo S rear - like on Steve's Arena Ruf
Hence why I asked the question. I was pretty impresed with Bongers' honesty, he could have told me anything as I was ready to bite...

The consensus seems to be that whilst you can really pin the 993 to the ground with GT2 EVO bodywork to have a 993tt which will still accelerate over 200kph effectively means lift - I think the sloped windscreen will have a very beneficial effect.

pete95zhn

Järvenpää

Jussi

Yes TB, I have read that topic and know that case but my point was to show what is your secret when you beat all 550, 570, 590, 610 hp Porsches and referring your "very low" own hp readings.

But I really like that Jean will also calculate (and show) your car's power from that 100-200 4th gear run because it is very good estimate for that purpose !

And what comes to "my Kaboom problem" when I will do that 0-330kmh test and for people who don't quite understand proper Motronic/ECU tuning:
ECU also lowers boost pressure when facing enough heat.
So you can't call that for "fixed boost" version even if it set up for that 1.31 max..

Jussi

WOW!

Then that guy can also join here and show some nice result with "Finnish XXX hp" car

pete95zhn

Well Hessu really doesn't hang out in the 'Net, he's busy painting cars... Then there's few tuned 996 turbos ( One EvoMS and another Cargraphic, I guess ) and this 997 turbo with EvoMS's EVT-690R kit around Helsinki.

Jussi

Good for him, this is very time consuming job..
I have to also little cut my hanging time here and focus to more essential things..

Jussi

I know that guy also. Very nice cobalt blue 997 turbo and his register plate numbers means something
btw. I were in his car last trackday in Ahvenisto when he showed how that newer technic monster rides.. I have to say, I was scared He had semislicks and nice G forces..

TB993tt

Jussi, now you have me even more confused..... You do not have fixed boost ie an external boost controller ? This function is handled by the Motronic via the N75 valve wastegate actuation ?
If yes then is your 1.3bar a maximum at peak torque or at max power ? how does the Motronic typically vary the boost during a run up to peak power in a higher gear ?
The Motronic will usually head for maximum boost at peak torque then the boost will drop as knock is approached - is this what yours does ?

Jussi

sorry for that
ECU controls that wastegate actuator.
Max pressure 1.310bar is at max power.
I don't/remember very accurate what my Motronic tuner said when speaking about these. I just remember that he said something that wastegate start opening already at 0.7bar (I may be wrong?) and ECU control that and keep pressures at that max value which is programmed(1.3). max pressure is achieved at max hp area, about 6000-6500 RPM.

But really, I have to work now, otherwise I can't fund my hobby
I may do some tests in weekend.....