Alright heres some history, i had my d16z6 rebuilt with pistons, eagle rods, new rings, new bearings(main and rod) the crank was polished and balanced and the cylinder walls honed. When i got it back from the shop i put it in and cranked it some, never built up oil pressure, i replaced the oil pump with one from another z6, cleaned up the pickup and replaced the pickup gasket, built a very small amount of pressure. After weeks of trying and stuff i guess i destroyed the bearings. I had the bearings replaced again. Put the motor in, still no pressure. I dropped the pan(a6 pan was the only one i had that wasnt beat up) and replaced the oil pump AGAIN with one we know for a fact works fine(came off my brothers z6 he just swapped out) Still nothing, tried crankingthe motor with the plugs out, no pressure builds up, checked oil countless times, not low. I just dont get it. Is it possible that having an A6 pan will cause this problem on a z6? I looked and they looked pretty much the same size. but could that be a problem? I will be working on it again one of these days soon, but does anyone have any ideas or suggestions? thanks for any input

 

88-95 has more than one type of oil pickup, i've seen at least two different ones, they were different heights. I don't see how this could be a problem, however, granted you have enough oil in the pan to begin with.

Maybe you're oil pickup is hitting the pan?

hope you can figure it out, good luck.

 

checked the oil countless times, i guess im going to find a z6 pan and slap it on and see what happens, thanks for the input

 

Well after several months of frustration and lots of money, the issue was the oil pan, thanks alot man for the suggestion, ive posted on alot of forums and gotten very few suggestions, but its time to move on to some turbo hell