Hey guys, i love my Ur-Q the way it is but i want more POWER.

I have a lead on an AAN, now the question is, do i need to swap transmissions/diffs or can i keep the factory stuff thats in the UR.

Also any ballpark on cost to rebuild a 20vT ?

any other advice towards this swap would be great, thanks.

The transmission can stay, but what you need to do is switch to the proper flywheel / clutch combo. Thats the easy part.

You will need to assess the amount of cutting to the front end you want to do. The AAN intake will let you use a front mount intercooler, on the downside - there isn't really too much room for one unless you start cutting. You will also run into interference between the intake manifold and the radiator. The radiator can be rotated a bit to help, but as you rotate it you will run into clearance issues with the bomb/hydraulics... Switch to a vacuum boost for the brakes and a 4k PS pump and lines and you will be ok.

Its quite a list of odds & ends to fit the AAN but its been done by many. If you can get ahold of 3B intake goodies you will have a much easier time of it, but people tend to ask the moon for 3B parts.

Not as much a shameless plug as just a ton of BTDT over on www.motorgeek.com Check through the PROJECT threads and research it before you start. Lots of AAN / 3B converted UrQ's and 4k's on that site with lots of know-how

Thank You. I would like to do this with zero cutting to the car.

Im a longtime VW guys but this is my first Audi project, so any info is good.

Thanks for that.

the v-belt setup a la all the old stuff. IMO best setup is AAN longblock with 3B architecture (IM, pulley, water manifold), so to speak. Just so many issues with putting an AAN in vs. 3B.

Brandon
'01 S4
'84 urquattro 20Vt (3B w/ some RS2 stuff)

With the amount of work it might as well have been an AAN - more potential.

Rick

that will give you the setup of a 3b, but w/ an AAN bottom end.

I'm in the same dilema w/ the UrQ my dad, brother and I bought. We want 20vt, but I"m trying to figure out the best plan of attack. I want to use the AAN wiring harness/ECU, but trying to figure out if it's worth trying to adapt the 3b to that system or just swapping in the AAN and going from there.

stay tuned...

see <a href="http://www.efiexpress.com/catalog/product_info.php?cPath=1&products_id=1">here</a> ;)

BTDT on setting up a customer car with a VEMS / coil per cylinder conversion kit.

When it comes down to it, there are LOTS of parts that need to be changed to convert an AAN to an RS2 ADU or S2 ABY configuration.

Here is a short list:
Intake manifold
idle valve bracket and plumbing
fuel rail
throttle body
oil pan
PCV system
water manifold

and I've never seen an aftermarket ECU reliably handle -20 degrees at 11,000ft. (my mtn house in winter) and 110 degrees at 3500ft. (Utah desert) without fooling with much more than I want to. Maybe 3b can do that though...

Rick

Thanks guys. My brother already purchased a 1994 S4 parts car so i just have to scrape some cash together and take this motor off his hands.

Another question would be what else would i want to steal from the S4 while im at it ?

I dont want the brakes, as my car already has G60's and i just purchased a complete 4 corner set of 951 S brakes.

Also i would love to run the RS2 intake manifold to complete the look =) Any idea where one would look for one, and approx. what it would cost to buy one ?

Thanks

you'd want the harness and ECU (no brainers), the coils, and any other ancilary engine related things.

Not sure on a RS2 IM right now. Need to start looking around myself... as well as start searching for a S4 parts car.

fast :-)
including the car, I'm in for about 50k or so thus far. There is a LOT to do to make it 'right'.
And now for more power we will need air/water intercooler and then head work for more flow. At 380awhp right now and its a BEAST. Easy 400-420 with the intercooler, and with the head work who knows.
even at 380 the front end is light when the boost hits. With the intercooler and 32lbs of boost, its downright frightening :-)