Forced Induction Superchargers | Turbochargers | Intercoolers

Weird turbo question.

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Old Apr 25, 2023 | 11:01 AM
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Default Weird turbo question.

Ok has anyone ever run oil to a turbo with no exhaust or intake air going through it. So it wouldn't be spinning at all. If so did it push oil past the seals. I wouldnt think.it would but we had a caterpillar we ran wth the exhaust manifold off and it leaked past the seals. Cat said of course it did like I was dumb or something. Of course he then couldn't explain why it did it but put the exhaust back on and it no longer leaks. Wtf? Is this a FM thing-works by freaking magic.
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Old Apr 25, 2023 | 11:35 AM
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Wondering if at rest and not spinning the shaft isn't centered in the seals allowing a leak but when spinning its riding on the seals?
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Old Apr 25, 2023 | 12:55 PM
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From: Little Austin
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The common shaft is designed to float on a film of oil as it spins. I would not run a turbo like that...

Andrew
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Old Apr 25, 2023 | 01:15 PM
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The oil seal in a turbo is a lot like piston rings. The super-fast rotation of the gap and thin film of oil are what keep it sealed when the engine is running. If you pressurize it in a static state, oil finds a way through the stationary gap.
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