Here is what the cast ring seals and oil sling galleys look like in a turbo...



Did you try the check valve idea I gave you?

 

We ended up putting 95lb low imp inj and a meth kit on it lol.

Still trying to figure the smoke thing out.

 

Also, is the smoke immediate as soon as it's started, or a minute or two after it starts?

If it's right away on a cold engine, then it's not the turbo, the turbo won't be hot enough to burn oil till shortly after (1-2 min) the truck has been started.

 

I have not tried the check valve yet. The smokes starts like shortly after start up, not right away.

 

Also is it volume or PSI that will cause a turbo oil ring to leak? Thanks. I do have a restrictor in the oil feed line. Thanks!

 

Couldn't you let the truck sit for a day, and then pull the turbine housing off to inspect the seal? I know it would be a pain in the *** but it sounds like this would be the next step

 

when you put the turbo on, did you hold the center section still so it could fill with oil the first time it started with it on or did you just let it spin? I was always told you need to prime oil into the turbo first.....

 

No I did not do that. You think the oil ring messed up? IMO If it was the oil ring it would smoke all the time like the previous turbo he had with a bad oil ring.

 

That was going to be my last step to do.

 

I was just adding a suggestion to check, every metal has an expanding rate, even brass, so if it's cold and there is a small scratch, it could get oil through, and then the clearance of the bearing could reduce enough that you don't get the oil when the motor is hot.