neilm

I contacted ZF Getriebe GmbH for information on the 5 HP 24 tiptronic transmission they supply for the S4 and A6 2.7T. The Tip in these cars is a 5-speed auto transmission with integrated center torsen differential and a front axle differential.

The Tip can handle 308 hp and 310 ft-lbs. They show 313 HP, but that doesn't follow the math I used:

HP = kW x 1.341
ft-lbs = Nm x .73756

Doesn't look like the Tip will be able to handle a chip upgrade with it only rated for 310 ft-lbs, but my A4 Tip is only rated for 228 ft-lbs and it seems to handle the PES with 265 ft-lbs with no trouble so far.

Transmission capacity:
T(max) Engine at 3500 rpm = 420 Nm
P(max) at 5500 rpm = 230 kW (313 HP)
n(max) in 1st to 4th gear = 7200 rpm
n(max) in 5th gear = 6200 rpm
n(max) KD shift = 7000 rpm
T(max) Turbine foward/reverse = 800 Nm/500 Nm
Converter:
W 260 S with 2 controlled converter clutches
T(p) = 78 -281 Nm at n(p) = 2000 rpm
Ratios:
1st gear 3.57
2nd gear 2.20
3rd gear 1.51
4th gear 1.00
5th gear 0.80
Rev. gear 4.10
Constant 2.63 ... 3.73

Weight with oil 141.1 kg

NeilM<ul><li><a href="http://www.a4.org/bbs/archive/9807x4/messages/474.shtml">A4 Tiptronic technical data</a></li></ul>

Brian M.

Thanks for the info. I was wondering if there was any way to beef up the tiptronic in the S4 in order to handle more torque. Or is rating on the conservitive side?

mrw

Can you ask them about the A8/S8 Tip?

Bob S

Dou yo know if it this is same box as in the 4.2 as I am considering the car for a later chip upgrade.

Ron O

Thanks for the research. I plan to have my S4 Tip chipped stage one and this is comforting to know that it will be "strong enough" for the increase. Thanks again this is a good example how this board services we the buyer.