Oil leak from O2 housing stud

[VergeTSi]

So I just swapped the hotside on my 16g and added a evoIII o2 housing but when I bolted everything back up and started the car I noticed a somewhat big oil leak from the stud and nut that connects the o2 housing and dp. I looked around and the oil isn't coming from the head or anywhere around, it seems like it's coming from inside the exhaust. Has anyone seen something lime this before? I don't know what to do.

 

[Dsmj89]

Take the turbo off and check it out for oil leaks inside the turbo, could probably have bad seals.

 

[VergeTSi]

I thought about that but the thing is that before this swap the turbo didn't blow any oil or anything and still has no shaft play. If that was the case would I need a new turbo?

 

[Dsmj89]

Not at all, you could rebuild it. Drop it and get it check out asap. Worse comes to worse you will end up buying a rebuild kit for the turbo. No need to spend another $300+ for another turbo.

 

[majik2k5]

Double check that middle exhaust manifold stud in the bottom row. Even if you don't see any oil outside the manifold. I had that happen with me, and it just ended up leaking the oil into the manifold instead of onto the head itself. Took me a little while to figure out what was going on.

 

[VergeTSi]

So i swapped out the 16g for a 14b thinking this would solve my problem and its doing the same, its smoking like crazy and still dripping oil from inside the exhaust. I looked closer into the leak and it seems like its oil mixed with coolant what is coming out.

 

[wickedz]

OLD thread, but mine is doing the SAME THING. any help please

 

[lil corb]

Double check that middle exhaust manifold stud in the bottom row. Even if you don't see any oil outside the manifold. I had that happen with me, and it just ended up leaking the oil into the manifold instead of onto the head itself. Took me a little while to figure out what was going on.

This ^^