[modifyd]

I have the original box the turbo was shipped in and the P/N on the box is 10-180 and below that is 269H. Can you guys give me any info on this and possibly a map?

I haven't pulled it off the car yet, just thought I may be able to use the box numbers. It's supposed to be a T3/T4 50 Trim. I need to rebuild/regasket it as the rear seal is leaking oil into the exhaust. Is there a ring kit or is it suggested to send it out?

Thanks,
Christopher

[Robert]

Originally Posted by modifyd

I have the original box the turbo was shipped in and the P/N on the box is 10-180 and below that is 269H. Can you guys give me any info on this and possibly a map?

I haven't pulled it off the car yet, just thought I may be able to use the box numbers. It's supposed to be a T3/T4 50 Trim. I need to rebuild/regasket it as the rear seal is leaking oil into the exhaust. Is there a ring kit or is it suggested to send it out?

Thanks,
Christopher

None of those number match up with any Turbonetics part numbers. I'd need the wheel measurements to be sure what it is.

[modifyd]

Hi Robert,
Thanks for the reply. I pulled the turbo off last night to get the "backing plate" number. It is T-23530. Can you get the specs from that? Also, what are the symptoms of a leaking oil seal besides the blue smoke out the exhaust? Do you know a reputable Turbonetics specialist around the Pittsburgh, PA area that could rebuild it?

Thanks again,
Christopher

[Robert]

Originally Posted by modifyd

Hi Robert,
Thanks for the reply. I pulled the turbo off last night to get the "backing plate" number. It is T-23530. Can you get the specs from that? Also, what are the symptoms of a leaking oil seal besides the blue smoke out the exhaust? Do you know a reputable Turbonetics specialist around the Pittsburgh, PA area that could rebuild it?

Thanks again,
Christopher

I'll ask the team to see if it's in the build computer. As for the symptoms there can be a bunch. What are you seeing?

[modifyd]

Thanks for the help and response. Is it possible to get a map of this turbo as well?

Back to the problem - The PO said it was turbo seals so I pulled the turbo off two days ago. I looked at a few things just to see if something caught my attention.
-The exhaust ports on the engine have a small amount of buildup - it's not "powdery" but it's far from slick.
-There is no oil or film in the compressor outlet.
-There is no visible film on the turbine outlet - just a small amount of buildup (like the engine ports).
-The turbo shaft is tight (moves ever so slightly axial but zero lateral - which I think is normal).
-I checked the compression and it's between 135-140 across the 4 which is good for the engine I'm running.
-When the car runs without the turbo/manifold connected (i.e. open exhaust ports), there is only small blue puffs when I blip the throttle - I think this is just leftover traces of oil in intake, etc.
-With the turbocharger connected and only into boost, the car leaves a "freight train" blue cloud behind it.
-When I let the turbo sit overnight resting on the turbine side, oil seeped out past the impeller. I don't know if this is normal.

My thoughts are:
1) Rings (compression test should have cancelled this one)
2) Valve seals
3) Turbo seals (front or rear)
4) Too much crankcase pressure under boost (maybe needed a vac system)

Thanks again,
Christopher

[Robert]

Originally Posted by modifyd

Thanks for the help and response. Is it possible to get a map of this turbo as well?

Back to the problem - The PO said it was turbo seals so I pulled the turbo off two days ago. I looked at a few things just to see if something caught my attention.
-The exhaust ports on the engine have a small amount of buildup - it's not "powdery" but it's far from slick.
-There is no oil or film in the compressor outlet.
-There is no visible film on the turbine outlet - just a small amount of buildup (like the engine ports).
-The turbo shaft is tight (moves ever so slightly axial but zero lateral - which I think is normal).
-I checked the compression and it's between 135-140 across the 4 which is good for the engine I'm running.
-When the car runs without the turbo/manifold connected (i.e. open exhaust ports), there is only small blue puffs when I blip the throttle - I think this is just leftover traces of oil in intake, etc.
-With the turbocharger connected and only into boost, the car leaves a "freight train" blue cloud behind it.
-When I let the turbo sit overnight resting on the turbine side, oil seeped out past the impeller. I don't know if this is normal.

My thoughts are:
1) Rings (compression test should have cancelled this one)
2) Valve seals
3) Turbo seals (front or rear)
4) Too much crankcase pressure under boost (maybe needed a vac system)

Thanks again,
Christopher

Crankcase ventilation is where my head is at with what you described. My bet is under boost the crankcase is getting pressurized (when it should be under vacuum) which is causing blow by and resulting in the James Bond smoke screen. Where is the crank case vent hose run? It should be sourced from in front of the compressor inlet to keep vacuum.

[Robert]

part number 11022-BB built in 2006. T3 T4e 50 trim with the old stage 3 turbine wheel. .63 a/r turbine housing.

Compressor map:

[modifyd]

The hose is coonected right in front of the compressor inlet. It connects through the factory separator to the PCV. I was thinking of running a gutted PCV to a catch can and using either the compessor inlet or a dedicated pump. The engine has a 4G63 head on it and I think they have evac problems. Is it normal for oil to seep out of the turbine housing when its just sitting? Also, can oil leak into the intake tract through the compressor?

Thank you for the help and information. I just don't want to send it in if thats not the problem.

[Robert]

Originally Posted by modifyd

The hose is coonected right in front of the compressor inlet. It connects through the factory separator to the PCV. I was thinking of running a gutted PCV to a catch can and using either the compessor inlet or a dedicated pump. The engine has a 4G63 head on it and I think they have evac problems. Is it normal for oil to seep out of the turbine housing when its just sitting? Also, can oil leak into the intake tract through the compressor?

Thank you for the help and information. I just don't want to send it in if thats not the problem.

Oil should not be seeping from anywhere. Yes oil can leak into the cold side if the seal on the compressor side of the bearing is leaking

[modifyd]

Robert,
One last question: So it looks as if a rebuild is neccessary since it seeps out just sitting, correct? What do you suggest as far as the rebuild or who/where do I send it? Are there any of your vendors on the East coast that would rebuild it? It should only need seals, but I don't want to take the the chance just marking the shaft and rebuilding it myself since it's a good turbo with the BB center.

Thanks again for your help,
Christopher