(first of all im doing a s5 TII swap into a 85 gs)

i have a question about the turbo oil drain.. how much pressure is in the metal tubing from the turbo to the front cover? is it adequate enough to just use a rubber hose from the metal tubing to the front cover? (i had to weld in a tube on the lower left corner of the front cover so the s5 TII omp would fit) thanks
-marvin

 

Not that much pressure. You may want to go to a hydraulic shop so you can purchase a high temp/oil resistant rubber hose. You can use a heater hose. But it will start leaking a few weeks later.