Loud whooshing sound? Turbo? - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 19 (permalink) Old 10-30-2019, 10:52 PM Thread Starter
 
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Loud whooshing sound? Turbo?

Hey guys, new to the forum. Installed a banks waste gate the other night & ever since then I’ve had a bad whoosing sound almost as if one of the intercooler boots are leaking. I’m still building 22PSI as I always have with tuning & checked all connections multiple times with a boost leak test. Nothing is coming up. I checked all intercooler lines, boots, intake, exhaust & still getting that bad sound. Any ideas? Could it be the turbo? Thanks
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post #2 of 19 (permalink) Old 10-30-2019, 10:55 PM Thread Starter
 
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Here’s a picture of the turbo? Noticed this line where the wheel would spin
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File Type: jpeg 29C27F5B-563C-4FA9-B1D7-9927C3676A88_1572497652594.jpeg (37.0 KB, 125 views)
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post #3 of 19 (permalink) Old 10-31-2019, 06:07 AM
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I cant see the picture. Does it have shaft play? Should have little to none side to side and none in n out. It sounds like it came in contact with the housing which isnt good.

2012 QCSB/Built 6.8L Cummins/48RE/Gated shifter
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post #4 of 19 (permalink) Old 10-31-2019, 07:10 AM Thread Starter
 
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Quote:
Originally Posted by SilverGorillaLML View Post
I cant see the picture. Does it have shaft play? Should have little to none side to side and none in n out. It sounds like it came in contact with the housing which isnt good.
I didn’t feel any play in the wheel which has me confused...
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post #5 of 19 (permalink) Old 10-31-2019, 07:50 AM
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Stupid question......Thats the banks "big mouth" waste gate isn't it? Isn't that what these kids driving Subbies and the turbo f150's do to their cars so they sound like this? Meaning that's how they are supposed to sound? Ignorant maybe but all in all just a dumb question.

2004 Chevy 2500HD LT CCSB 4x4 211,XXX miles, Glow shift Pillar Gauges Pyrometer, Boost gauge, PPE boost valve, PPE High Idle switch, Merch Auto welded water pump, PPE coolant hoses, Mishimoto thermostats, 4"RCD LIFT, 35" TOYO A/T XtremeII, Bilstein 5100's, 4" Magna Flow Cat Back, MBRP CAI, Stage III trans, PPE Stage 3 Tie Rods, Sinister coolant filter kit, Powerstop Brake kit F&R, Firestone bags, Accuair on board compressor w/ 3 gallon tank. #whitetrucksmatter

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post #6 of 19 (permalink) Old 10-31-2019, 08:58 AM Thread Starter
 
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Originally Posted by BOWTIE67 View Post
Stupid question......Thats the banks "big mouth" waste gate isn't it? Isn't that what these kids driving Subbies and the turbo f150's do to their cars so they sound like this? Meaning that's how they are supposed to sound? Ignorant maybe but all in all just a dumb question.
Don’t know how it’s a stupid question if I’m genuinely lost here. It sounds like a boost leak. How does an upgraded wastegate make a sound that is consistent with the RPMs? I know a good amount about diesels but never ever heard of this wastegate making a noise the way it does
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post #7 of 19 (permalink) Old 10-31-2019, 11:00 AM
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Waste gates spill air.
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post #8 of 19 (permalink) Old 10-31-2019, 02:34 PM
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@BOWTIE67 youre thinking of a blowoff valve

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post #9 of 19 (permalink) Old 10-31-2019, 02:52 PM
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Quote:
Originally Posted by SilverGorillaLML View Post
@BOWTIE67 youre thinking of a blowoff valve
Told you it was a dumb question. . HAHAHA Its amazing i maintain my own things with as little as i really know. HAHAHA I just know if i take it apart i can put it back together. I dont know much.

2004 Chevy 2500HD LT CCSB 4x4 211,XXX miles, Glow shift Pillar Gauges Pyrometer, Boost gauge, PPE boost valve, PPE High Idle switch, Merch Auto welded water pump, PPE coolant hoses, Mishimoto thermostats, 4"RCD LIFT, 35" TOYO A/T XtremeII, Bilstein 5100's, 4" Magna Flow Cat Back, MBRP CAI, Stage III trans, PPE Stage 3 Tie Rods, Sinister coolant filter kit, Powerstop Brake kit F&R, Firestone bags, Accuair on board compressor w/ 3 gallon tank. #whitetrucksmatter

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post #10 of 19 (permalink) Old 10-31-2019, 06:36 PM
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Quote:
Originally Posted by BOWTIE67 View Post
Stupid question......Thats the banks "big mouth" waste gate isn't it? Isn't that what these kids driving Subbies and the turbo f150's do to their cars so they sound like this? Meaning that's how they are supposed to sound? Ignorant maybe but all in all just a dumb question.
Your not the only one!! Lmao
I’ve never messed around with the waste gate or banks for that matter
You said it’s hitting 22 could you not have it adjusted right?

2002 LB7 5 inch exhaust, ppe boost valve, boost/egt/rail pressure gauges, fass 95
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