Quote:
Originally Posted by Petah78
What is the pattern you are seeing? RTV or failures?
Problem is that we have not seen any UOA of the failed engines while it was still running (or again, maybe i missed this info?) thus we do not know if they were suffering from a gradual slow death. All the positive UOAs that we have seen thus far are from engines that have not failed and very well might never fail. What i am seeing is that more evidence suggests that RTV is not causing premature wear so these spun bearings is likely not related.
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Why would you do this though? You do UOA's to gauge the health of an engine, not one that is dead. If it spun the bearing the noise is all the diagnosis I need. All the UOA is going to show you on a failed engine is a high amount of bearing material and metal. If you are curious on if the issue is gradual then make a 22+ UOA thread and hopefully people keep following up and posting in it.