Why Ebay turbos fail

[SPLN SUX]

I tore apart my "donor" turbo to see exactly what it is that fails... it was pretty obvious.

 

On these first couple pictures, I inverted the colors to make the problem extremely visible... plus they were dark

 

http://i7.photobucket.com/albums/y292/mrmeanr/DSC00001.jpg

http://i7.photobucket.com/albums/y292/mrmeanr/DSC00002.jpg

 

Now this gasket is not only entirely too thin, but its also about an easy inch too large, as well as split. With a 76mm wheel spinning at 80,000rpm... you can see why that could become a problem pretty quickly.

 

Another thing i noticed was on the backplate... its surface is rough and unmachined, as you can see in this next pic...

 

http://i7.photobucket.com/albums/y292/mrmeanr/DSC000031.jpg

 

in other words... garbage.

 

Now the good news is, i never planed on running this side of the turbo... oh no, its too little. I had some wheels lieing around so i took a pic of the difference in size.

 

http://i7.photobucket.com/albums/y292/mrmeanr/DSC000041.jpg

 

Even the large wheel is small, compared to what i have my eye on :burn:

[Guest mudbutt]

so you are using the true shit part of those turbos, the cartridge?

[SPLN SUX]

so you are using the true shit part of those turbos, the cartridge?

 

actully the cartridge on this one is unusually sound. I tore it down and it was put together quite well. There was no play anywhere, and the bushings in it were machined to tight tolerances... i was rather surprised and impressed to see such quality from it... I am planning on replacing the bushings with bearings, and putting good quilty gaskets in it before puting it on my masterpiece of an engine so as not to inject it with little bits of bronze, rubber, and aluminuim.

 

The one thing that did catch my eye was that there isnt a thrust spring for the backing plate...