Oil in Intake how much is normal?

[niterydr]

Originally Posted by perryg114

Well I am planning to mark everything so I can put it back the way it was. Like I said, other than the oil in the intake the turbo and car runs fine. If it was seized up I would definately have it rebalanced. If there is any contact with the scrolls or missing blade parts or lot of erosion I will definately have it rebalanced and parts replaced as necessary. Its got 120,000 miles on it. Its all stock and I run synthetic oil in it so I hope it is not coked real bad.

Perry

What do you plan on "marking it" with?

You do realize that turbochargers spin at 100K+rpm and any slight imbalance/imperfection/mis-adjustment will send it apart quickly.
The average shelf life on an OEM turbocharger is 100-150k miles. After that bearings and seals usually need replacement. I would suggest to find a low mileage 14b, a new turbo, or send it to someone that does quality, reputable rebuilds.

On a side note, John was not trying to sell you a turbocharger. If he would have posted "Buy an Evo 16g from us for $569.00 plus tax", THAT would have been trying to sell you a turbo. He was mearly providing information and an answer to your question.

In and out movement (on a journal bearing turbo) indicates thrust bearing wear. Slight side to side wear is normal. The amount of oil inside the center section can really effect how much "load" is felt.
If your crank case system is in check, you might have to look at the turbo for possible signs of seal failure. Are you still running the valve cover breather into the intake?

[perryg114]

Originally Posted by niterydr

What do you plan on "marking it" with?

I am not sure but I know it can be done because anyone that balances these things has to take the shaft off and balance the assembly out of the center section. It them must be taken apart and put back into the center section. If you have any suggestions as to how to do this I would be grateful.

You do realize that turbochargers spin at 100K+rpm and any slight imbalance/imperfection/miss-adjustment will send it apart quickly.

Yes I am an aerospace engineer I am familiar with turbo-machinery. I am assuming that if I can keep the turbine and the compressor properly clocked that I can maintain the factory balance.


The average shelf life on an OEM turbocharger is 100-150k miles. After that bearings and seals usually need replacement. I would suggest to find a low mileage 14b, a new turbo, or send it to someone that does quality, reputable rebuilds.

Finding the latter is hard to do.

On a side note, John was not trying to sell you a turbocharger. If he would have posted "Buy an Evo 16g from us for $569.00 plus tax", THAT would have been trying to sell you a turbo. He was mearly providing information and an answer to your question.

Sorry, I am pretty good with mechanical things I earn a living at it. I am not a turbo-charger expert but I am pretty competent with most things.

In and out movement (on a journal bearing turbo) indicates thrust bearing wear. Slight side to side wear is normal. The amount of oil inside the center section can really effect how much "load" is felt.
If your crank case system is in check, you might have to look at the turbo for possible signs of seal failure. Are you still running the valve cover breather into the intake?

Yes everything is stock should I change something to reduce oil consumption?

The turbo has a good bit of side to side play on the compressor side but very little axial play (in and out) and very little play on the turbine side. The turbine and compressor are in good shape and nothing was hitting the scrolls. The turbine does not look eroded at all. I am a little concerned about there being more play on the compressor side than the turbine side that has a much harder life.

Perry

[niterydr]

Originally Posted by perryg114

I am not sure but I know it can be done because anyone that balances these things has to take the shaft off and balance the assembly out of the center section. It them must be taken apart and put back into the center section. If you have any suggestions as to how to do this I would be grateful.

I don't balance turbochargers. I leave that to the places that have the proper equipment to do it.

Originally Posted by perryg114

Yes I am an aerospace engineer I am familiar with turbo-machinery. I am assuming that if I can keep the turbine and the compressor properly clocked that I can maintain the factory balance.

People have clocked (well put back to where they were before hand) turbo's in the past and it works for them. In theory it should work, but it is not something I will attempt or offer customers as a service.

Originally Posted by perryg114

Finding the latter is hard to do.

Forced Performance or Majestic Turbo for rebuilds.

Originally Posted by perryg114

Sorry, I am pretty good with mechanical things I earn a living at it. I am not a turbo-charger expert but I am pretty competent with most things.

Congrats on earning a living with your hands. So do I and most people on this forum.
http://www.gnttype.org/techarea/turbo/turborebuild.html
Okay article on rebuilding turbo's at home.
http://www.engine-builder.com/ar/eb20726.htm
2nd article down is a good read on blow-by.

Google.com works wonders when researching subjects .

Originally Posted by perryg114

Yes everything is stock should I change something to reduce oil consumption?

The turbo has a good bit of side to side play on the compressor side but very little axial play (in and out) and very little play on the turbine side. The turbine and compressor are in good shape and nothing was hitting the scrolls. The turbine does not look eroded at all. I am a little concerned about there being more play on the compressor side than the turbine side that has a much harder life.

The turbo sounds in decent condition, I would look at the rest of the vehicle.
Have you checked for crankcase pressure?
Done a cylinder leakdown test?
How much oil is burning?
Blow-by test?
The systems can fill up with oil mist quickly if you have a cylinder that is starting to get a substancial amount of blow-by.
Most OEM turbo's show more "wiggle" on the compressor side compared to the turbine side.

[Jakey]

Originally Posted by perryg114

Yes I am an aerospace engineer I am familiar with turbo-machinery.

Let me guess, you're a Six Sigma Black Belt as well.