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Old 12-03-2019, 12:48 PM   #1
STINEY
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Default How hot is too hot? Did I catch an early turbo meltdown scenario?

What says TurboBricks?

Problem or not?

See inside the housing on the machined lip above the impeller - does that look just shy of melting into a puddle to anyone?

Or am I merely paranoid and this is normal?

Input welcome. This was boost limited to 15-16psi.






Last edited by STINEY; 12-03-2019 at 02:32 PM..
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Old 12-03-2019, 01:24 PM   #2
Chuck W
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I just see and old turbine housing. I don't recall how old that thing was.

As I mentioned before, it might be good to fatten things up under boost a bit more.
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Old 12-03-2019, 01:38 PM   #3
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Check spark plug condition. If no issues there, figure out what caused this.
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Old 12-03-2019, 02:52 PM   #4
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Too rich will also light up a turbo.

My MAP hose fell off once!
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Old 12-03-2019, 03:09 PM   #5
STINEY
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Quote:
Originally Posted by Chuck W View Post
I just see and old turbine housing. I don't recall how old that thing was.

As I mentioned before, it might be good to fatten things up under boost a bit more.
Thanks for the input Chuck. I appreciate you helping out with the back-history on Delores as I run across stuff like this.

I started out pulling the alternator for cleaning and testing, end up doing crack repair on the exhaust manifold. Typical old car adventures, fix what need fixing.


Quote:
Originally Posted by lummert View Post
Check spark plug condition. If no issues there, figure out what caused this.
Good advice. Never hurts to do a plug reading. Thanks.

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Originally Posted by Dirty Rick View Post
Too rich will also light up a turbo
That it will. I don't see any signs yet of an overly rich mixture, there were a couple of manifold-to-turbo studs that broke recently though. Reason number 2 for pulling stuff apart for inspection, "while I'm at it" strikes again.



I suspect Chuck is correct and this is just an old turbo housing with associated wear.

I don't want to ignore anything I could have easily fixed before catastrophic failure either.
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Old 12-03-2019, 03:19 PM   #6
Chuck W
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Yeah, I just don't remember what it looked like when I put it together. It could've been that way all these years. I'd been looking more for cracks.

Scope creep will get you every time.
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Old 12-03-2019, 08:50 PM   #7
mck1117
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I don't see anything out of the ordinary. Besides, the turbine outlet is colder than the inlet: that's the turbo's job, to pull heat out of the exhaust. If you're going to melt something, it's the inlet side of the housing (or the wastegate).
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Old 12-05-2019, 08:56 PM   #8
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Looks like normal used turbo to me.
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Old 12-09-2019, 03:05 PM   #9
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No picture yet, but I found a good sized crack on the hot side inlet, between the wastegate and the inlet path. Will post it later.
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