Dean Head

 

 

I'm betting that's where it came from.  RX-7 Specialties warned me of the water they found in the engines, and suggested that I flush it out.  Since yours was taken apart, and reworked, they would have cleaned it all up then, so what you have now has probably just accumulated over the years.  There's really no reason to expect this is severe, as it was in some other engines.

 

In your case, I would probably flush the engine as thoroughly as possible, then blow dry it as others have suggested. You could think about wrapping it in plastic with some big desiccant bags.  I still think it would be a shame to take that engine apart to remove the ceramic seals, but if you are going to run a turbo, then I guess that's what you should probably do.  

 

Good luck,

Rusty