Blown Turbo?

[2plus4plus0eq6]

I've been searching for the past couple hours now, but didnt end up finding anything really useful.

My car idles fine and there isn't any smoke coming from the exhaust, but I have some oil leaking from the turbo into my intercooler.

I've got a s14 Sr20det with a Ball bearing T28 Turbo. I've heard its hard to rebuild ball bearing turbos, so I would probably get a new turbo if I really had too. I'd rather not cause Im poor

My question is.. does this mean a definite blown turbo or could it possibly be something else thats fixable?

Thanks

[AznXstazy]

are you sure the turbo is "leaking" into your intercooler and not blowby?

[steve shadows]

Check yout Crank vent as well

[SleepR 240sx]

Sounds more like blowby to me.

[jspaeth]

+1 I had a catchcan setup where the hose running off the valve cover ran only "downhill" to the catchcan.

...as a result, EVERY single little drop of oil that was getting flung into the "T" was gravity-draining downhill into the catchcan, and it filled up faster than I could have ever imagined.

Now, i have the hose routed so that it goes "uphill" slightly at first when it comes off the valve cover "T" and then down into a catchcan.

The result is that most oil droplets gravity drain themselves back into the head now, while the catchcan still properly allows vapors to pass back through into the intake, catching any condensates.

This might help you.

[2plus4plus0eq6]

what exactly is blowby? I couldn't find any threads on it. Something like air getting into the head. I could tell if I idle'd the engine and took off the oil cap?

I've heard something about checking for a blocked pcv valve. I have looked into the FSM for the PCV and found nothing. Is this the same as the Blow-by Control Valve?

One thing I didn't mention was that this is a swapped engine which I am trying to get running, so I haven't driven the car around anywhere yet. (still finishing the swap)

Facts:

- No oil in intake (so cancel out PCV issue)
- Smoke from exhaust only in beginning of starting (from first engine start after swap?)
- puddle of oil coming from turbo to the intercooler

1. Is there still a possibility of blowby?
I know there is a blowby hose from the valve cover that goes down near the turbo, but not sure where too.

2. If there isn't any oil leaking into the exhaust, does this cancel out the possibility of blown turbo seals?

[filluptieu]

just for your info, you can NOT rebuild a ball bearing turbo. also if it is blow by, make sure you have the correct restrictor on it (its .30 inch i think, but i might be wrong) this is for a BB turbo

[2plus4plus0eq6]

When you say restrictor, are you talking about the metal divider in the turbo housing? the turbo thats on the engine is the stock t28 so I would assume it has the divider.

another question.. If I overfilled my engine with oil, would it cause oil to come out of the Turbo air outlet?

[filluptieu]

When you say restrictor, are you talking about the metal divider in the turbo housing? the turbo thats on the engine is the stock t28 so I would assume it has the divider.

another question.. If I overfilled my engine with oil, would it cause oil to come out of the Turbo air outlet?

no, not the divider. a restrictor basically holds back a certian amount of fluid pressure. this can be done by a banjo (stock banjo on a sr20, which is the one that bolts to the block) or a AN fitting. so what i am saying is that on a BB turbo it requires less oil because the ball bearing needs less lubercation to run then a journal bearing that uses the oil to sort of make the shaft of the compressor float on the journal bearing.

and if it has a divider on the exhaust side its a gt28rs i believe and yes a bb t28, and yes it need a restrictor. if not after a short amount of time the seal on the cold compressor side will leak oil into the intercooler