Stephen,
You mean the plates inside the convertor ?

 

No, the friction plates for the tranny. It is setup much like a motorcycle clutch. You have a series of metal plates and friction plates that coupler together to change and hold gears. These are the bits that slip, overheat and come apart. It would be best described as material similar to that of your clutch. The difference is these sit in ATF. Keep in mind this is thesame tranny the big nasty Benz uses.

 

Stephen,

Do you think that the tranny of the 996TT is the same as say the one in the SL65AMG
That car has 1000 Nm !
If this is true we should not worry if we tune to 850 Nm

 

"Are you using GIAC software too ?" -- Yes, I am using GIAC software custom made for the Stage V turbos I am using.

"What are your additional mods ?" -- The following is a list of my performance mods: Ultimate Motorworks Stage V Zero Clearance turbos, ceramic coated, ported and polished, with custom wastegates (made by Kevin, who posted in this thread) * RUF exhaust * Custom ported/polished/ceramic coated headers * GIAC custom programming with 1.3 bar / 19 lbs. boost (programmed for 100 octane) * Gemballa sport air intake system and air inlet distributor * GT2 intercoolers * Aquamist methanol/water injection system (boost actuated direct spray into the intake) * Aquamist methanol/water intercooler sprays (boost and manually actuated) * La Bree Motorsport custom racing pipes * EVO MS Silicone Boost Hose Kit * Bailey diverter valves * K&N air filter * Techart coilovers * Techart sway bars (front and back) * Cargraphic alloy strut tower bar * Brembo 14in / 380mm Evolution brakes * Performance Friction Carbon Metallic brake pads * HRE 540R wheels (11.5 rear and 8.5 front) * Michelin Pilot Sport Cups (315 rear)

"Are you CEL and PSM/ABS error free ?" Yes.

"What power do you have ?" I have never dynoed my car, nor will I given that it is a Tip. Dynos are problematic for Tips.

"What about lag ?" Very little lag.

Stephen mentioned the importance of keeping the Tip cool. I second this. I have boiled my tranny fluid twice (by stepping on the brake and gas concurrently in order to launch hard). Stephen (Imagine Auto) offers a Tip cooling kit (typical of the high road he takes, Stephen elected not to advertise this in his post). I am first on the list when Stephen gets in a missing part -- I suggest you get on the list for this kit as well.

Craig

 

If money was no object, and someone was to modify the torque converter, I'd have the stall of the converter raised.. Most Domestic cars here in the US, that have turbo's have a higher stall. This allows the turbo's to spool up faster, thus allowing the engine to deliver more torque.. Throw out your fuel economy...

 

Kevin,
I believe the stall is at 2500 rpm
To how much would you raise that value ?

 

You need to match your turbochargers to the stall or match the converter to when your engine starts to make some good torque...

 

Another issue from memory with driving Alex's car, was that the lockup of the torque converter would uncouple to quick... It would be nice if someone would offer a shift kit for the tippy..

 

I believe I have the most (or one of) modded tips around and have beaten on it for a while. Tips can be made to be very fast and here's a video for ya:
http://www.6speedonline.com/forums/s...threadid=20007

Interesting thread indeed. As Kevin said and knows from first hand experience on my car level 4 is safe. We don't know what the maximum is yet but the S600s run around chipped etc... with 740 foot pounds of torque and use the same transmission. I did use Kevin's transmissions cooler system last year during the shoot out (space is so tight/limited up there) and it seemed to keep temps down nicely enabling for better launches etc... without the fluid boiling over.

The main issues with the tiptronic seem to stem from software support. It's not the same as a 6speed and has other variables that stop it from making full power all the time as Stephen/Kevin pointed out. There's also a seperate brain for the tranny which nobody has yet touched

 

I have noticed on my tip that it is hard to get a good launch from a dead stop. If I quickly floor the throttle with 1st gear selected the engine seems to get up to full power a little slowly - sort of like the software is protecting the trans from a huge surge of power. It seems to launch faster and harder if Drive (2nd gear) is used - it seems to downshift quickly to 1st and then go like hell. How do you get it to launch hard from 1st gear?

 

Look at the video in the thread above and you'll see that you have to build boost and stall the car for a bit. Then in 1st gear and with PSM off it launches hard... However I've noticed there's a fine line between launching hard and making it bog. It more often than not bogs at the top of 1st.