Ok so i was looking for a ball bearing turbo, I found a ad on the local craigslist (may have been a mistake?!?!?) so i talked to the guy and he said he got this turbo on a trade for some srt4 parts, Suposibly it came from a kit for a cobalt ss. Well i asked for some numbers to see if i could google it to get more info. unfortunetly there is a lack of numbers or anything i can make out. the previous owner was told it was BB, when i inspected it there was no play and it was a little stiff but glided nice (didnt feel grainy or rough) i took the gamble and gave the guy 300. i got it to my buddies house first thing we realized was it was missing the inducer and turbine hold downs, no big deal maybe some one was trying to clock it? We seperated the exhaust side to find what looked like shavings on the impeller, it didnt make any sense thoughm there was no play and it didnt look like it rubbed any where. it pretty much looked like a new turbo. we came to the conclusion that maybe this was ceramic coating from the painting of the CHRA? im guessing someone just sprayed the center section and didnt bother to cover up the impeller? i cleaned it with some brake clean and its coming off but its getting grainy and sliding under the seal plate? so now i need to clean that out some how. the big question is did i get hosed? is it ball bearing? what is it? it is oil cooled and water cooled, seems like its restricted on the oil side which im sure thats only on BB turbos right?
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