Originally Posted by SPOOL U 1986
sorry anthrax you are incorrect...had a chance to pull the turbo off yesterday while sitting around for 6hrs while sinister told me he was right down the road and almost here to pick up the car(big thumbs up for ya matt)...was indeed a piece of the valve seized in the exhaust wheel. I left the o2 housing on when I pulled the turbo so I guess it was hiding somewhere in there...On your theory Im not sure how pieces of metal would get from the oil pan to the turbo cartridge, as they'd have to pass through the oil filter....but then again with dsms anything is possible...none the less car is still for sale, everything is ready to go including now a brand new $80 titanium battery purchased yesterday.
So, I was correct, not incorrect. I said the valve shrapnel would be visible when the turbo was removed, but that that probably was not the case because you would have said that it was definitely pieces of valve that seized the turbo and not that you guess it was pieces of valve. And, that's what happened - the valve pieces were not visible when you removed the turbo and that's why you guessed.
The other possibility, based on what you wrote, was that the shaft seized because of fragments in the center cartridge (because, if you can't see what seized the turbo outside of the center cartridge then your implying that it was seized within the center cartridge). Therefore, those pieces would still be present in the center cartridge when you bolted the old turbo on the freshly rebuilt motor.
Sorry about the clutter.