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Journal bearing turbo shaft play with/without oil pressure

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Thought I'd do a little experiment while I had the pressure primer out, since I'm one of those people who always wonders how much radial shaft play is too much for an unpressurized journal bearing turbo. Here's a BNR 16G, with zero axial play but enough radial play for the compressor blades to touch the housing. Hope someone finds it interesting!


No oil:



50 psi:


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