STS rear mount boost kit spitting out oil!! HELP!!!! - Nissan 350Z Forum, Nissan 370Z Tech Forums
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post #1 of 28 (permalink) Old 11-28-2010, 11:41 PM Thread Starter
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Angry STS rear mount boost kit spitting out oil!! HELP!!!!

Hey guys, i was wondering if anyone has an idea about this. i recently installed the sts rear mount turbo to my 03 z and ran it with the turboxs piggy pack unit which was tuned already for 8.5psi. i haven't done a tuneup yet but i drove the car and it drove fine with no issues but its spitting out a lot of oil from the exhaust and i noticed it became a bit foamy as well.i don't know if i was running lean or rich as i do not have the gauges installed yet.is this just the turbo that is installed in the back of my car's exhaust system or is it my motor?

also there was smoke coming out of the right side of the hood and smelled pretty bad of burning oil or something similar to oil. i personally don't know if this has something to do with the oil that showed up in the exhaust as someone looked at it quickly and said its the valve cover gasket leaking and the oil is getting on the manifold.

cars internals are stock and it has 160 k on it .the kit has no boost controller and is running 8.5 psi.

help appreciated
Thanks in advance
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post #2 of 28 (permalink) Old 11-29-2010, 08:36 AM
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well easy way to tell is to check the exhaust further up before the turbo and see if there is oil

it could be the turbo, maybe the oil pump is not working and not draining the oil

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post #3 of 28 (permalink) Old 11-29-2010, 08:34 PM Thread Starter
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the oil pump seems to be working as it makes a sound when i start the car.
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post #4 of 28 (permalink) Old 11-30-2010, 07:52 AM Thread Starter
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i found out that my valve cover gasket is leaking and it is causing the smoke from hood.but still curious about the oil out of exhaust. any one has any suggestions? is there any relation between the valve cover leaking and the oil from the exhaust ?

thanks
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post #5 of 28 (permalink) Old 11-30-2010, 08:48 AM
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there shouldn't be

As I mentioned before, unbolt the exhaust before it gets to the turbo and see if there is oil already, if not then you know it is the turbo, if there is then you probably have issues with piston rings

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post #6 of 28 (permalink) Old 11-30-2010, 02:10 PM
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I wanna say the oil was mix with water due to the milky color.

The left exhaust tip comes out from the waste gate and the right tip comes out the turbo, so it's prolly the turbo. If it comes out of both tips it would be the motor.
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post #7 of 28 (permalink) Old 11-30-2010, 02:22 PM
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Was it the valve cover or head that were leaking? If your head were leaking it would cause the engine to mix fluids from the water jackets to the piston cylinder.

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post #8 of 28 (permalink) Old 11-30-2010, 09:06 PM Thread Starter
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so far the shop has told me its only the valve cover gasket.when i asked about the milky greasy stuff they said as it was a used kit ,it was sitting for a while and its just pushing out the gunk.is this possible?
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post #9 of 28 (permalink) Old 11-30-2010, 10:22 PM
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There shouldn't be any "junk" anywhere in the kit. Just some carbon buildup. it sounds to me like your turbo has a bad seal and is leaking oil. BUT, that doesn't explain why it's milky so I'm not sure. I'd do what Westpak suggested and look at the exhaust upstream of the turbo.

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post #10 of 28 (permalink) Old 12-01-2010, 12:04 AM
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Are the turbos cooled with oil or coolant? If there's coolant running through them I'd guess the seals on the turbine are shot and that oil/coolant slurry is escaping.

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