I Have A 92 5.9 12 Valve W\ Turbo And Innercooler
I Was Going Along And I Noticed That The Turbo Was Not Whisleing
Like It Does Most The Time At 25lbs Boost, Pulled The Air Filter Hose Off And The Turbo Does Not Spin As Free As It Did. Its Not Hitting Anything Nothing Broken That I Can See. Is This A Bearing Or What? It Dont Squeal. I Do Have The Pump Turned Up And My Egt Will Go As High As 1200 If You Dont Watch It But Its Never Been There Long Maybe 5-10 Seconds Give Me Some Ideas, I Know Turn It Down But What Else? Thank You

 

4" exhaust, BHAF, and a compressor upgrade and you'll get the

 

The bearings may be on the way out? If it is binding get it checked out before it comes apart and is not rebuildable.