Ok I got the on3 turbo kit for my 91 GT vert. I bought it with the cheap turbo thinking it should last 6 mon to a year till I save up and get a better one. Well when I first started it, it was smoking like a freight train. Looked and seen oil coming out the V band clamp for the down pipe. So I pull the DP off and started it and oil is just coming out the exhaust housing of the turbo. So I was thinking maybe has something to do with the return line. So I pulled the return line off the oil pan and pointed it straight down into a cup. Started it and still the samething. So next I was thinking maybe it needed a restricter. So I filled the oil supply flange and pretty much just made it a pin hole for the oil supply like the one that came with my t3t4 turbo on one of my other cars. It seemed to slow it a little bit but was still doing it. So I chalked it up to a bad oil seal as I searched on google and a guy had the same problem mine did when he first started it on his 01 cobra with a on3 and cheap turbo. Well just so happens a guy I know whos kind ofa friend but more of a acquaintance had a turbonetics t70 turbo that was older but supposedly it had been rebuilt and only had about 1200 miles on it before he swapped it out for a t44 or something cause he thought that turbo was to big for his motor( built buick grand national) Supposedly. I inspect it there was pretty much no play in the shaft everything looked good. Went to put it on and the exhauist housing was touching my inter cooler pipe cause it was so big lol. I pulled the housing of my on3 turbo and it bolted right on no problems. Matter of fact my housing over all was smaller but the porting on the inside looked a little bigger than the turbonetics. Anyway I put it on and it did the same exact thing!!
So now im at a loss cause I really dont think 2 tubos are going to be doing the exact same thing . This is frustrating me. I just want to drive my car lol. When I installed the turbo kit I put some new gt40P heads and upper and lower intake on as well. So im wondering if someone could tell me if theres anything else that would make both turbos blow oil out the exhaust or is if a fluke that both turbos are having the same issue? please any help would be greatly appreciated. Lol and if anyone in GA has a turbo stang that would let me swap there turbo onto my car just to see if theirs worked on mine I would pay someone for there time so I dont go out buying a new turbo if I dont need it
So now im at a loss cause I really dont think 2 tubos are going to be doing the exact same thing . This is frustrating me. I just want to drive my car lol. When I installed the turbo kit I put some new gt40P heads and upper and lower intake on as well. So im wondering if someone could tell me if theres anything else that would make both turbos blow oil out the exhaust or is if a fluke that both turbos are having the same issue? please any help would be greatly appreciated. Lol and if anyone in GA has a turbo stang that would let me swap there turbo onto my car just to see if theirs worked on mine I would pay someone for there time so I dont go out buying a new turbo if I dont need it