Help me diagnose what went wrong w/ my turbo
#1
Wax On, Wax Off
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and, we get my new standard cell phone pic!
I have no idea what could've caused this. does it look like foreign object damage? compressor stall, dead bearings?
I have no idea what could've caused this. does it look like foreign object damage? compressor stall, dead bearings?
#2
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I would go with foreign object damage.
I don't see any scoring on the intake throat.
But you can see where several of the fins are bent and chipped as if something bounced around a couple of times then either was vaporized or pulled through.
Some of the damage could be from the little bits of missing fin.
Just my less than two cents worth
I don't see any scoring on the intake throat.
But you can see where several of the fins are bent and chipped as if something bounced around a couple of times then either was vaporized or pulled through.
Some of the damage could be from the little bits of missing fin.
Just my less than two cents worth
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#4
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I'm guessing it ate something. Question is what, and where is what's left of it now! Keep in mind that those fins turn VERY fast, it doesn't take a bolt to knock chunks out of them. I would venture to guess a small piece of metal, or even big piece of plastic could to this if the turbo was spinning at velocity when the object was introduced. You know come to think of it, cavitation at velocity could be hell too. I suppose if you have enough shaft play and the right combination of full boost and possibly failing BOV it is 'possible' that cavitation could become violent enough to snap off those fin tops. But I lean more toward the foreign object theory.
Dude, you have the worst luck.![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
Regards,
Russell
Dude, you have the worst luck.
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Regards,
Russell
#5
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Definitely looks like it took in something it shouldnt have. Hose clamp, nut, something to that degree. Shaft play will wear them/eat them up, but it doesnt take chunks out of the turbine.
#7
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I am surprised no one else has mentioned this yet... but...
That compressor wheel may not be the real bad news... think about where that metal off the wheel and what ever it ate went. probably small enough to go through the IC... through the IC pipes... through the intake... into then past a valve... into the combustion chamber... spat out if you are lucky... or wedged against the cylinder wall held in by a ring land scraping the hell out of the bore... rooting valve seats... damaging squish points... possibly bending valves...
That compressor wheel may not be the real bad news... think about where that metal off the wheel and what ever it ate went. probably small enough to go through the IC... through the IC pipes... through the intake... into then past a valve... into the combustion chamber... spat out if you are lucky... or wedged against the cylinder wall held in by a ring land scraping the hell out of the bore... rooting valve seats... damaging squish points... possibly bending valves...
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#8
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Originally Posted by NZ951
I am surprised no one else has mentioned this yet... but...
That compressor wheel may not be the real bad news... think about where that metal off the wheel and what ever it ate went. probably small enough to go through the IC... through the IC pipes... through the intake... into then past a valve... into the combustion chamber... spat out if you are lucky... or wedged against the cylinder wall held in by a ring land scraping the hell out of the bore... rooting valve seats... damaging squish points... possibly bending valves...
That compressor wheel may not be the real bad news... think about where that metal off the wheel and what ever it ate went. probably small enough to go through the IC... through the IC pipes... through the intake... into then past a valve... into the combustion chamber... spat out if you are lucky... or wedged against the cylinder wall held in by a ring land scraping the hell out of the bore... rooting valve seats... damaging squish points... possibly bending valves...
#9
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That IS just an interesting smear of grease or something below the opening, right? I thought that was a crack in the housing for a minute there.
I'm always nervous about throttle plate screws, but they're down stream from the turbo. The only other hardware that I know of is a small bolt in the lower corner of the airbox. I think it couples the box to the AFM. The blow-off vavle is a possibility, if it somehow came apart, a rivet or a washer could have been sucked in. Pull the BOV and make sure it is intact, I think with a light you can see the little flapper.
It does look like FOD but from where? Bruce
I'm always nervous about throttle plate screws, but they're down stream from the turbo. The only other hardware that I know of is a small bolt in the lower corner of the airbox. I think it couples the box to the AFM. The blow-off vavle is a possibility, if it somehow came apart, a rivet or a washer could have been sucked in. Pull the BOV and make sure it is intact, I think with a light you can see the little flapper.
It does look like FOD but from where? Bruce
#14
Done With Sidepatch
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Originally Posted by ibkevin
You have the factory air box, do a fastener inventory. ![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
What did you find in the IC?
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What did you find in the IC?
Sorry for your bad luck.