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Old 11-21-2012, 01:53 PM   #101
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Did you try fixing that exhaust leak between your turbo and dp? Because I would probably start there.

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Old 11-21-2012, 02:34 PM   #102
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Quote:
Originally Posted by thenuge26 View Post
Did you try fixing that exhaust leak between your turbo and dp? Because I would probably start there.

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All air leaks are fixed as far as I can tell.
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Old 11-21-2012, 02:44 PM   #103
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Originally Posted by EO2K View Post
I dunno, start eliminating variables? Your turbo is still in the mail, right?

This is my Miata.net style response: Put your factory exhaust and intake toob back on and run the car. Make sure its not something artarrded like your power steering or AC compressor by removing the belt and running the car. When was your timing belt service last done? Did you replace the idlers?

You know, my rotrex whistles and I was told that's just intake noise from having an open element filter. Back in the day when I had my NA with the Monsterflow intake, it also whistled.

...maybe learn to love the whistle? BrainBrain may have something here.
The turbo is still with the shop. I haven't told them to send it back yet.

I bought the car last year. Not sure off the top of my head when timing belt was done. There is no AC or PS. Don't know about idlers. I have the original exhaust manifold but no downpipe.

The noise is definitely coming from the immediate area at the turbo. It is loudest at the rear of the turbo. When I put my ear directly above the turbo and move my head slowly around the area it is coming from the rear of the turbo.

I don't think it is an air related sound. After studying it for the last few months I really thought (still think??) it is the turbo.
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Old 12-17-2012, 12:15 PM   #104
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I finally have another update. I believe the issue is resolved.

I got the CHRA back after Turbos Direct told me twice that after they cleaned inspected everything that the CHRA is perfectly fine.

They put it back together and shipped it back to me for $270 ($250 + $20 shipping). That price still seems a little high to me, but when I got the CHRA back I thought for a minute is was brand new because they cleaned it so well.

So, I put everything back together this weekend. I let the car idle for a few minutes and no more funny noises from turbo. I took it for a short drive around the neighborhood and it sounded as good as new. Since then I put another 50 miles on it.

I'm guessing that the cleaning and/or re-balancing resolved whatever issue was there.

Thanks again for everyone's input over the last few months and I'm excited that I can drive it again.
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