Turbo going bad?

[JApol]

Recently I have noticed that after my truck shuts down the turbo sounds more raspy. I have also noticed while in the passenger seat as the turbo spools it doesnt sound like it did.

Last weekend I pulled off the intake tube, grabbed the compressor wheel and spun it by hand. It didn't feel free spinning to me. I did not feel any up/down, left/right movement of the wheel but I did feel a little bit of in/out movement. Do I have a turbo on the way out?

Boost and smoke seem to be normal.



Thanks for your help.

 

[Prairie Dog]

A bit of in/out movement is fine ~ they're like that from the factory. The wheel has a fair degree of flywheel effect to it so it doesn't really freely. If it didn't feel rough and it didn't have a lot of oil on it then I suspect its ok.

 

[JJPage]

Recently I have noticed that after my truck shuts down the turbo sounds more raspy. I have also noticed while in the passenger seat as the turbo spools it doesnt sound like it did.

Last weekend I pulled off the intake tube, grabbed the compressor wheel and spun it by hand. It didn't feel free spinning to me. I did not feel any up/down, left/right movement of the wheel but I did feel a little bit of in/out movement. Do I have a turbo on the way out?

Boost and smoke seem to be normal.



Thanks for your help.

There should be a small amount of radial play (up. down,left,right) as long as it does not come in contact with the housing, this is normal, as the shaft "floats"in oil.



There should not be any axial play (in,out), if there is, you are getting wear on the thrust bushings and they will eventually start to pass oil, either into the boost hose, or out the turbine side into the downpipe.



Keep a close watch(compressor side), you do not want to have to clean the mess out of your whole intake system, it can also cause a "runaway". Turbine side will just put oil into your exhaust... smokes blue, usually on take off, after idling, like at a stoplight.

 

[JApol]

so the fact it doesn't spinwell is not a problem.

I pulled on the wheel and turned and didn't feel any catching.

My last oil change went about 20K and the oil level was still good so it not leaking oil and the compressor wheel looked clean.

is 93,000 miles right for a thrust bearing?

 

[Scooby]

I have also noticed while in the passenger seat as the turbo spools it doesnt sound like it did.

I'm just wondering what you were doing in the passenger seat!

 

[Prairie Dog]

I don't want to be argumentive and I respect all opions but I checked the turbo of my last two DC's when they were new just for reference and they both had a small amount of in/out movement. Both are still going strong after many, many miles. Also, I just talked to a heavy equipment freind of mine who has lots of experience with turbos and he said the same thing. Perhaps the OP should call a local rebuilder to get more info. but these turbos tend to go many hundreds of thouands of miles unless abused.

 

[HBarlow]

... ... ... ... ... ... ... is 93,000 miles right for a thrust bearing?

No way, unless you ran it without oil.

As another poster stated above, they will run hundreds of thousands of miles in normal service.

 

[JJPage]

I don't want to be argumentive and I respect all opions but I checked the turbo of my last two DC's when they were new just for reference and they both had a small amount of in/out movement. Both are still going strong after many, many miles. Also, I just talked to a heavy equipment freind of mine who has lots of experience with turbos and he said the same thing. Perhaps the OP should call a local rebuilder to get more info. but these turbos tend to go many hundreds of thouands of miles unless abused.

Not taking anything you state as arguing, imo. This forum is great for hashing out problems and differences, and finding solutions.



As far as what I stated above, I was regurgitating exactly what Brady at Industrial Injection told me. I had a SPS 62 that was dumping oil into my exhaust, and sadly into my charge cooler hose, intercooler, intake horn, etc.



First he(Brady) was convinced my turbo drain tube must be restricted(turbo had about 2k miles). After verifying it was not, he had me check for axial play in the turbo shaft, at first there seemed to be none, but after a bit more effort there was about a 1/32" of axial movement.



Brady sent me a replacement turbo(the Silver 62 he sent me, had no axial play), before taking the SPS 62 off my truck, so I would have minimal downtime, nice customer service in my book. When he dismantled my turbo, he found the thrust bushing on the compressor side faulty.



I was speaking from my experience, and passing it on... . So were cool, as far as I'm concerned. Jess

 

[JApol]

I'm just wondering what you were doing in the passenger seat!

My wifes favorite passtime is making automatic headlights come on



I will check my charge air tubes and if there is no oil I will let it be.