Turbo possible oil leak?.

[miguelmcv]

Hey guys, is it possible the turbo to leak oil from the union where the round collar is, I don't know what is it called but here is a pic of the piece.
I have my balanced shaft removed but the highest that it can get is 85 and 95psi of oil pressure, I don't know if it is leaking from the turbo, I checked all around the turbo and nothing even from the return oil line, I removed the collar and didn't find anything, it had a little bit of oil on the inside of the collar but nothing on the turbo.
I just wanted to know if it can leak from the turbo where the hot side meats.
The only explanation that I can think is that it is leaking from inside of the turbo and leaking to the way out where the hot side meats and goes down to the collar so that's the oily way the outside of the turbo don't get wet of oil.
I was planing to bring the turbo out and check, but before to do that just wandering what you guys think. Any advice?.

 

[JusMX141]

Probably a leaking turbine seal. That turbo should be seeing no more than 50psi of oil pressure from a restricted source...95psi unrestricted is fatal.

 

[johneclipse]

Probably a leaking turbine seal. That turbo should be seeing no more than 50psi of oil pressure from a restricted source...95psi unrestricted is fatal.

i think that he's saying his motor is running 95 psi at WOT.

 

[miguelmcv]

Probably a leaking turbine seal. That turbo should be seeing no more than 50psi of oil pressure from a restricted source...95psi unrestricted is fatal.

What?..... I have read that G turbos has an integrated oil restriction,
It can hold more then 50 psi oil pressure.

 

[JusMX141]

i think that he's saying his motor is running 95 psi at WOT.

Then what do you think the turbo is seeing if he's feeding from the filter housing?

What?..... I have read that G turbos has an integrated oil restriction, It can hold more then 50 psi oil pressure.

Completely false.

If this is the case, explain why the 14B on 1G DSM's, the 16G's found on Evo I - III's, and the reverse-rotation 16G's found on Evo IV-IX models come from the factory fed from the head (low-pressure source) WITH a restrictor in the banjo fitting at the turbo-end of the line?

READ.

· The recommended oil pressure at Full Load Rated Speed is: 3 ~ 3.5 kg/cm2 (42.67 ~ 49.78 psi).

Your turbo is seeing double that amount.

 

[LiquidX]

Are you smoking at all when doing a pull because where you claim it's leaking from would need a lot of oil to make its way out without it getting burned up in the process.

How is the seal for the oil drain?

 

[miguelmcv]

Are you smoking at all when doing a pull because where you claim it's leaking from would need a lot of oil to make its way out without it getting burned up in the process.

How is the seal for the oil drain?

No It does not smoke at all. Not even light.
Well, I check the turbo with the engine running and nothing happens, I clean up the area and acel the car till get 90 of oil pressure, the result is nothing, nothing happens, But after driving the car it shows up a drop on the same place.
I thought it was from somewhere else but looked multiple times and nothing, everything is dry all around that area, is just that little drop, It doesn't spray oil, is just that little drop that is bothering me.

Seal is good everything is new, this is a fresh engine and I just rebuild the evo3 turbo. so everything in the turbo is new.

 

[JusMX141]

Make sure the leak isn't at the oil drain flange itself, and would happen to be running down the v-band. However, any time a customer turbo is received and has oil in a similar place to yours, there is evidence of a leaking turbine seal when the turbo is torn down.

 

[miguelmcv]

Make sure the leak isn't at the oil drain flange itself, and would happen to be running down the v-band. However, any time a customer turbo is received and has oil in a similar place to yours, there is evidence of a leaking turbine seal when the turbo is torn down.

I will check that out. Thanks.

Well, I took that turbo out and it is leaking, (where the heat shield is), the journal bearing I guess, I called the shop where I bought the kit from and they said that I need to put a restrictor. so now, what size do I need?. Or where to get it from.
Any link would be apreciated.

 

[miguelmcv]

Updating.... After searching and reading.
Here is what I found, When I pull apart the turbo, it was a restrictor inside, It is a tight hole (on the middle).
But there was another hole on one side (like on the wall of the hole,)
Let's say where the thread ends before the restrictor hole.
This hole was way way bigger, But I don't know where that hole goes to,
What I saw as well is the 1g line (from the head) has a restrictor like all the people are saying, But the turbo restrictor is way way way more little then the 1g line restrictor, so to my conclusion is.
There is to much pressure that even with the turbo restrictor, wont hold down much pressure to let the turbo drain, all depends on how much oil pressure we are getting and how good the crank pressure reliefs as well, having crank pressure stress will make the turbo not to drain easy.
Now My Conclusion is..,, With high oil pressure, and not well vented crank case, it needs a restrictor, even knowing the evo has restrictor integrated, it is required another to slow down the oil pressure before the evo restrictor, It is to hold down more pressure. of course if you have a well vented crank case, then you don't need a second restrictor...

 

[JusMX141]

THE TURBO DOES NOT HAVE A RESTRICTOR INSIDE THE INLET. You're seeing the oiling holes which lead to each of the two journals and the larger hole which leads to the thrust plate.

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[LiquidX]

You should really learn to break down your sentences into more manageable pieces aka paragraphing.

The only restriction that was used is solely the banjo fitting as mentioned before.

 

[miguelmcv]

THE TURBO DOES NOT HAVE A RESTRICTOR INSIDE THE INLET. You're seeing the oiling holes which lead to each of the two journals and the larger hole which leads to the thrust plate.

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Got it, I thought it was a restrictor, I will update how it end up with the 1g line from the head,
Thanks to keep me straight.

You should really learn to break down your sentences into more manageable pieces aka paragraphing.

The only restriction that was used is solely the banjo fitting as mentioned before.

Sorry about my sentences, I will do my best next time.

Just to update all you guys, I finally run my baby with no problems,
no more oil out of the turbo.
I run the 1g oil line from the head,
I think that I will mar the thread like (SOLVE PROBLEM).
Thanks to all of you for the help,