Here is another engine that was rebuilt with used rotor housing, after 4k miles with RA seals. I don't know what they looked like before, as I did not rebuild this engine previously. These seals evidently have 8 months +/- from the purchase of RA, as of today. So it doesn't appear to me that is has anything to do with build dates of the seals.



I would like to add I also don't know how this engine was run, I'm pretty sure it was run lean..

http://photos1.blogger.com/blogger/4.../1600/rx03.jpg

The galling looks exactly like my housings. Mine also had scorch marks but they were not that bad.