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Wastegate Rattle- 10th Anniversary

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Old 04-14-14, 02:32 AM
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Wastegate Rattle- 10th Anniversary

As the title states I have this really odd rattle occur whenever I let off the gas. I pin pointed it to my actuator/waste gate.

The actuator arm seemed to be working so I took my down pipe off and removed the backing plate. The waste gate seemed to be very loose and had quite a lot of play. I uploaded a video to show you.


What can I do to fix this issue?
Old 04-15-14, 11:53 AM
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Bump. Anyone know what I need to do? Rebuild? New turbo?
Old 04-15-14, 01:16 PM
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You need to get a good use exhaust housing and with that I don't think you have or will have strong boost because it is not holding pressure
Old 04-15-14, 02:07 PM
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im sure boost is fine. i actually think i have this rattle too. just noticed it today. its play between the rod and the "sheeth" but remember that the exhaust gas puts pressure on the flapper door to shut it.

if it bothers you, someone that rebuilds turbos can probably fix it, or you can get a new housing. or let it go. hate to say it.
Old 04-15-14, 02:55 PM
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The hinge bushing is worn out. You'll have to separate the shaft to replace the bushing.

I just bought a decent used housing and swapped everything over.
Old 04-15-14, 09:34 PM
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BNR can replace it for you:

https://www.facebook.com/photo.php?f...&stream_ref=10
Old 04-15-14, 09:46 PM
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PS in case you didn't know... you have an 89-91 (S5) turbo
Old 04-16-14, 11:15 AM
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Mine has same problem. It definitely needs fixed...u will have uncontrollable boost, wastegate will get stuck open closed etc...
Old 04-16-14, 12:14 PM
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Originally Posted by MaczPayne
The hinge bushing is worn out. You'll have to separate the shaft to replace the bushing.

I just bought a decent used housing and swapped everything over.
Where did you purchase your used housing?
Old 04-16-14, 02:21 PM
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Originally Posted by Pullout1979
Where did you purchase your used housing?
I just purchased a used/junk turbo off the classified section here.
Old 04-16-14, 02:22 PM
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Originally Posted by eage8
Is BNR a reputable source?
Old 04-16-14, 02:34 PM
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Originally Posted by Pullout1979
Is BNR a reputable source?
Yes, quite a lot of the people on this forum have BNR rebuilt/modified turbos:

BNRSuperCars
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