my1993nissan240sx wrote:i have the garrett s15 t28 turbo can someone post the proper diargam for hooking up the lines incase i have it backwards somehow???
Dude. There is only one way to route the oil and water lines to ANY turbo.
The top line you see going into the turbo is the oil feed line coming from the block. Usually you "T" into the oil pressure sender for oil supply. The fitting directly opposite the oil feed is your oil return. This gets routed back to the oil pan. The 2 ports on the left and right of the turbo, plugged with a red cap in the image, are for water cooling. The routing isn't important here since either can be the feed line.
The oil feed and return lines need to be as straight up and down as possible to facilitate proper oil drainage. The oil return is gravity drain only, so you want the hose to be straight up and down with as few turns and twists as possible on the return side.
Due process is very important - Right after they are waterboarded.