My idea of a mid engine rear drive using a 2.7T powerplant is becoming more realistic, as I've got the majority of the engine parts, and a great lead on a B5 quattro body to use for the project.

Now, the question is, what longitudinal transmission to use? I know there's a euro 6 speed available, but I doubt it'd be easy to purchase, and for a reasonable price, too. Other than that, I'm guessing a 2.8L AHA front track 5 speed, with S4 front driveshafts?

While we're on the topic, I'm considering using twin GT28R turbos. If anyone has any other theories or suggestions as to why these wouldn't work or why something else would be better, please, enlighten me. ;-)

wasn't sufficient?

right? ;)

and the oil feeds will be restricted, most likely. This will be a one - off setup, now you've got me interested in putting oil pressure sensors in the feed lines. Too bad I couldn't measure flow, to see how much oil is going through there. Hmmmm....

I'll have to give AWE a ring in regards to thier turbo choices, and what led them to it.

how much hp do you wnat to make?
a K04ed 2.7T in RS4 trim and tuning (i believe giac has tuning already for this setup) makes 430-450 hp and about 430 ft/lbs.

i would probably guess that like you said a front trak 2.8 5 speed would be easiest to find and work the best, as long as it were stong enough.

this concept kicks ass i realy hope to see it come to light, you are using a B5 A5 body? thatt deff be awesome, i assume the engine will sit where the back seat used to be? thatll be so easy to fab up headers and exhaust, so much room.

so why not be able to make any amount of hp only have the advantages of ball bearing turbos?

I'm pondering a single water/air IC with it's own radiator up front, GT28R turbos, custom exhaust manifolds, 4 inch downpipes/exhaust......

I'd like to think I can hit 600 whp or close to it. My biggest concern I think, will be the suspension & braking. Since this will be the first of it's kind with an audi frame, the brake bias will be wacky, along with the suspension. I'll have to get it weighed, and then select spring rates accordingly.

I've got a lot of the unique stuff planned in my head already. For the trans, I've mentally designed a shift plate similar to the VW's & TT's cable system. For the turbo inlets, some side scoops similar to what's on the boxters, and the IC will sit directly behind the front seats, somehow. No A/C, fuel cell up front, coolant/ps/fuel lines/water-to-air lines will run in the center cavity where the center driveshaft used to be. I've ditched the idea of trying to mount the front subframe in the back, since the rear subframe will need to stay in place since the rear suspension mounts to it. Rather, I'll weld in new plates where the engine & trans mounts will attach to the rear subframe. Tailpipes......through the license plate area? How about one, HUGE, 6" tailpipe? Bwahahaha.....

maybe email me. Something's not working on my end, I don't know.....

I dunno if it would work better, but a rear engine would also be fun.

Im not sure if they share the same engine bolt pattern.

I could be worth a shot.

keep in mind, that each turbo is only feeding 1.35 liters, and with that small displacement, you may never get to the right of the surge line.

Have you considered a big single turbo?

People w/ TT supras and 300zx's use much larger twin turbos with no problems also. The are have just 300cc's more displacement (as I'm sure you know).

and some tuner has done a single huge turbo S4 i forgot the name of the company....ok remember KTR performance. prob greatly simplifies hosing (except exhaust) and you can prob easliy switch between a HUGE turbo for highway crushing to a smaller one for like auto-x, i cnat imagine what the low end of a 2.7T with a single medium sized turbo (GT35?? or the like) would be like.

writing out multiple wish lists. I think smaller twin turbos as compared to one larger turbo will provide a better power band, smoother driveability & easier tuning. I've also thought of the 1.35 liters powering each turbo, and felt it'd suffice the GT28R's, but wanted other opinions. Nice to see other people were asking the same questions that I was. ;-)

large. You are looking at about 600 hp capability w/ those. If you want to get a little crazier, I say pick up some RS's w/ the small .64 housing. Basically identical spool, however it has more response before full boost comes in and it doesn't hit as hard as the R. Good for 700-750 hp also :)

so you can launch on NA power and have more control out of the hole no?

theres one big motor blocking your way to modify the shift linkage? cool idea tho