Before you do anything else, run the engine briefly with all the belts disconnected, then you'll know for sure what the noise is, or isn't.

__________________
'83 300D, 126K miles.

Look at the compressor wheel, it shouldn't have any nicks or abrasion on it.

The shaft can have a little (as in you can feel it but not see it) play in the "side-to-side" direction. The in-out direction should be tight.

When feeling a turbo, just feel it-don't go gorilla and crank on the blades.

__________________
$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment

What he said.

__________________
1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

If you haven't already, it would probably be worthwhile to check and make sure the exhaust manifold is properly attached/secured. My motor was making a shrieking sound at around 2K-2.5K RPM and it turned out that the manifold was not secure, with bolts loose and even missing entirely. It is difficult for me to tell while viewing your video, however, if the shriek I experienced is similar to the one you are experiencing.

-Chris

__________________
Christopher
'06 Mercedes E350 station wagon (silver/black)
'85 Mercedes 300D (black pearl/palomino)
'85 Mercedes 300SD (smoke silver/burgundy)
'79 Cadillac Sedan DeVille

'05 Toyota Camry (because always running is nice)

'85 Mercedes 300D sold back to orig. owner 8-1-06
'84 Volvo 264GL Diesel, owned 2000-2013

I took the U pipe off, checked for play and took some pics.

From what I can tell:

-There is barely noticeable in-out play. It might not even be there.
-There is up-down play. I don't know how to quantify.
-There is no left-right play.

I took many photos of the blades. Let me know what you think. It does look like the blade has been impacting the housing:

W126 300SD Green - Turbo - Imgur

I think this might be the best pic of the blades, click to make bigger!

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Did you try to spin the wheel> Did you feel any binding?

__________________
'85 300D Cal 280,000 miles
'14 GLK 350 60000 miles

I hope you realize, if it is eating the housing = metal shavings are entering your engine.

.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Yes I realize this, where else would they go?

The car has been parked for now. It will not be driven until this matter is resolved.

I will be contacting Pure Turbos to see what their thoughts and cost are on rebuilding this current unit versus rebuilding another used unit.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Good.
The question was simply to verify that you know, and for future members.

A couple of my customers actually believed the shavings would fall to the bottom of the housing and stay there.

.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

Ha! Maybe if they were REALLY dense. Lots-o-wind power in there lol

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k