2.7t tt
 

Hello,
Let me begin by saying that I understand the issues. First, let me say it has been done, albeit by Audi with more resources than I have, but don't tell me it's impossible. I have a stage one 2.7t APB on a stand and a AEB head. I know someone who will trade a tt shell for that head. Let me run down the plan and people fill in what I'm missing. For starters, the tt is transverse and the b5 s4 was longitudinal. Audi shortened the wheelbase on a s4 by the dimensions to fit the tt. My plan is to get a Audi or Passat 2.8 subframe from any junkyard as all v6 audi s use the same subframe. Then modify this subframe to mount to the tt. This covers most engine difficulties, mount, intercoolers, etc. I plan on using an 01E transmission with a shortened prop shaft. I plan on swapping rear differentials and front uprights. Basically I intend to create a shortened s4 driveline. I will be cutting the firewall to fit and making whatever cabin modifications and transmission mount points necessary. The entire driveline will need to be swapped to full time 4wd. The ultimate plan is a 2.7 with a 3.0 crank, forged rods and pistons, APB valve covers, bel wiring harness, 2.0tsi coils, 1000CC injectors and e85, 4:1 center diff, and completely stripped interior with roll cage.