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Old 01-09-2008, 07:46 PM   #1 (permalink)
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Turbo Flutter??

Iv heard a few trucks when they rev up high or are giviner good and let off the gas there is like a turbo flutter or some noise....anyone know what this is and how i get it? It sounds awesome!
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Old 01-09-2008, 07:50 PM   #2 (permalink)
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I think what you're talking about is turbo bark. this happens when you are revving, causing the turbo to spool up, then suddenly release the throttle. I don't know why you would want it as it can cause turbo failure (broken shaft I think)
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Old 01-09-2008, 07:50 PM   #3 (permalink)
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That is Turbo bark and is VERY BAD for your turbo. Will whip out th ebearings quick.
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Old 01-09-2008, 07:54 PM   #4 (permalink)
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well that cant be good then, I was at an automotive shop the other day and they installed a banks six gun system like intercooler and all and i heard that noise as they were playing with it after and it sounded good but i guess not......
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Old 01-09-2008, 07:54 PM   #5 (permalink)
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i cringe every time i head that noise...definately not good for the turbo
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Old 01-09-2008, 08:01 PM   #6 (permalink)
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Not good for the turbo at all. This is why they make blow off valves.
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Old 01-09-2008, 08:05 PM   #7 (permalink)
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yea BOV's are expensive though...just dont lett of the throttle so fast, if u can help it
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Old 01-09-2008, 09:28 PM   #8 (permalink)
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Can you get the bov's for our trucks??
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Old 01-09-2008, 10:08 PM   #9 (permalink)
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BD's turbo guard
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Old 01-12-2008, 02:02 AM   #10 (permalink)
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Are we talking about the short choppy "chooo chooo chooo" sound when you let out of the throttle at high rpms, or the "whoooosh" sound like when shifting gears? Like the sound at the end of THIS video?
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Old 01-12-2008, 02:53 AM   #11 (permalink)
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Isn't the "flutter" referred to as turbo surge? When the throttle is suddenly chopped at high boost pressures there is nothing forcing the the turbine to spin therefore causing the remaining air on the compressor side still has to be forced out of the turbo. But with the high pressure air fighting the now effortless compressor it cause it to flutter. Sound right?
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Old 01-12-2008, 10:07 AM   #12 (permalink)
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Maybe its not even "bark" he is referring too. After you let off the pedel on High boost, or elevated boost pressures, the still exsisting boost pressure is no longer needed in the turbo to be forced into the intake so the boost pressure is dumped thru the Waste gate. That is more than likley what you may be hearing. I hear it in mine everyday and it is the wastegate dumping boost out before it gets spooled into the intake.

During acceleration and haring the whistle fo love from the turbo and then letting off the pedel, you will hear a long accentuated "WHHHOOOOOOSH".

This is waste gate dump, not bark. Am I correct here. Someone chime in.

Just my .02
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