Hello CSS.net! I was here years ago for this same problem and got no help, but now I come with a different question for the same problem, but first, some back story:

I used to track my car a fair bit. Some track days and a lot of autocross. Now the problem I was (and still am) having is that when I take my car to a road course, after a 20 minute session on track, I have oil literally spraying out of my intercooler piping. It's so bad that the underside of the car is covered in oil, starting around the intercooler piping, into the wheel wells, and half way down the underside of the car. I've only ever had the problem on road courses, never while autocrossing.

Now, I havent tracked the car in 2 years due to a bunch of life events, but I just recently tracked the car last weekend. I had totally forgot about this problem however, and had to park it after 2 sessions for fear of getting the oil on track and doing damage to any engine bits. After I parked it, I talked to someone at the track about it and he told me that my turbo probably had a gravity feed oil return line, and the constant cornering at high Gs was not allowing the oil to drain out the turbo right, and over time it builds up in the housing, which in turn is what made it to leak. This made a lot of sense to me seeing as how it never has this problem while autocrossing with it's short runs.

But I know little about turbos, so I wanted to come here, and ask and see if anyone more knowledgeable than I also agrees, and if so, what can I do to fix it? The car runs like a champ still, so I know It's not a super serious problem, but I am worried that I might be damaging the turbo if I just continue to track it with this problem.

Thanks for reading this if you've gotten this far. Any advice and/or help would be greatly appreciated.

 

Any shaft play?

 

No idea. How do I check?

 

well the turbo is definitely not gravity feed, the oil feed line is lower than the turbo on the block and runs up to the turbo. oil is pushed through the turbo from what I can see. sounds like u got lots of blow by and need the powell oil separator. but as for whats causing it only on the one type of racing, someone else would need to chime in there

 

take of ur intake and try wiggling the compressor shaft with ur finger, if it moves in and out or hits compressor housing wall, then ur turbo is toast. that would also explain all the oil in the intake. iv also seen pvc get clogged and cause the crank case to pressurize pushing oil past seals.

 

He said oil return, which is gravity fed.

You do have a problem though, what is it? Anyone's guess. A fair amount of people track their LNFs without this issue. If it were a clogged pcv or clogged drain it would be your piping that would be contaminated with oil, I've had it happen (not on an LNF though). But that would still be pushed through the piping to become part of the combustion process in which you would notice it driving differently and then being pushed out the exhaust. It would be all over your rear bumper, not the underside of your car. Unless you're running at atmospheric bov instead of the stock bpv. A bov would allow that oil vapor, or droplets, to escape from the piping and coat the underside of the car seeing as the only air path our cars have from the engine bay is traveling under the car.

Need a little bit more information other than that you track the car.

 

Oh crap lol I didn't read that right obviously. Forget everything I said about oil line. And arnt all turbos gravity fed oil return?

 

What else can I say? I've described the problem to the best of my ability, and the car is stock, other than a MPX Intercooler.

Well, I guess this is going to be well above my level of being able to fix. It's going to the shop on Monday. Thanks for the input guys. I appreciate it.