ok so i had a good tinkering with it today.
the oil drain pipe is WAY larger then the oil feed line and does run mostly down hill but has to enter the block horizontally, im assuming this should be ok given its size? i also worked out that it was leaking due to bodgeyness of install. thread sealed and tightened properly.
but i undid the top connection on it and checked for blockage and theres none, and the hose is empty after running the car so its not blocked.
also i took the lid off the catch can so the rocker cover breather hoses could breathy freely and after i had done both that and fixed the leak the turbo stopped blowing heaps of oil splats out the back, now it just blows lots of eye watering smoke.
BUT when the catch can lid is off (rocker cover breathing freely) the turbo blows a little less smoke and the engine doesnt run rough like it was thru the rev range, it runs smoother and doesnt hesitate and pop as much. also when i muck around with the vacuum line from plenum to fuel reg/ block the spare open vacuum line on the plenum the motor drops a couple of hundred revs at idle.
im hoping it is something as simple as vacuum hooked up wrong and im also not sure what should be happening with the vacuum from the waste gate-to the turbo or to the plenum?
took some more pics. if you can see something wrong with the vacuum set up im open to ideas..
also, im well aware the engine bay looks like a train wreck, the bloke i bought it off was setting it up as track drift hack and was just tryna get it running- and YES that is speaker wire for the tps, low coolant sensor and oil pressure sender