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Your opinion on this turbo exhaust leak

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Old 07-23-22, 03:40 PM
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Your opinion on this turbo exhaust leak

I've been diagnosing an exhaust leak, and this is where I saw soapy water bubbling (I had a blower pushing air into exhaust tip).
There shouldn't be any leaks from there, right? I want to make sure this before committing on buying a replacement turbine

The turbo is BW 8374



Old 07-23-22, 04:31 PM
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that looks like where the rod passes through for the wastegate. definitely an issue there. i would say pull it and inspect it before buying anything
Old 07-24-22, 11:28 AM
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it’s only a bushing so naturally it will leak some in order to have the necessary clearance for the shaft within it to rotate, but that clearance will most likely be much greater when cold than when at operating temperature.
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Old 07-24-22, 04:22 PM
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That bushing is designed to seal with exhaust heat.
Old 07-24-22, 04:23 PM
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What issue were you trying to diagnose?
Old 07-24-22, 04:28 PM
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I agree
I smoke tested my brand new bw efr IWG and it smoked out that bushing as well
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armans (07-27-22)
Old 07-27-22, 03:40 PM
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Thanks everyone for your answers. I will assume that bubbling is normal.

Originally Posted by BLUE TII
What issue were you trying to diagnose?
Lately, I hear a strange noise (not loud, just barely) which resembles an exhaust leak (or at least it seems so to my ears).
I was trying to locate that "leak".
Old 07-27-22, 11:41 PM
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What is your boost control strategy?

Just heard a Honda this weekend racing that kind of sounded like an exhaust leak on one cylinder once the turbo spooled, but it was just the boost controller mac valve duty cycle pulsing causing the wastegate to flutter.
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