The_Josh_Bear
Full Access Member
Wes already answered this some but the wobble is tight for one thing and progressively worse for another. Meaning that it just barely grazes the housing when it does touch and then just slowly gets worse and worse. Due to the oily intake of our setups the untrained eye couldnt even tell the compressor was touching the sides because there was no marring, it was all smooth.Josh, why would loose turbo bearings cause a lack of boost? You went from 5 to at best 6 with the new cartridge. The defective wastegate seems to have made all the difference and then the increased fueling made even more boost). If the impellers were scraping the housing that should be obvious and a horrendous noise, or maybe it had clearanced itself by the time you got the used turbo...
BUT take off the intake and rev the engine and you could see it wobbling all over, it was crazy. I would have linked the video but somehow its deleted off my drive.
For the turbine side that was scraping too but there really wasn't a noise to be heard over the engine rattle and turbo spool that I could hear.