I cleaned the rotors by soaking them in a MEK/laquer thinner mix overnight.  Blasted with 60-grit silica at 80psi in my homemade blast cabinet, then brushed them down with MEK again.  Sprayed with TechLine's CBC1 and baked in the Wal-Mart special toaster oven.  I sprayed them down with WD-40 to keep the rust at bay until I can reassemble the engine.

http://ernest.isa-geek.org/Delta/Pictures/ToolsBlastCabinet2.jpg
http://ernest.isa-geek.org/Delta/Pictures/EngineCeramicCoatingBaking1.jpg
http://ernest.isa-geek.org/Delta/Pictures/EngineCeramicCoatingRotorThermalBarrier1.jpg
http://ernest.isa-geek.org/Delta/Pictures/EngineCeramicCoatingRotorThermalBarrier2.jpg

I'm now in the process of lapping the side housings.  I'm spreading valve grinding compound onto the housing, and then pushing it around on a glass table top.  Results are good, even if the process is somewhat laborious.  It leaves a roughended texture, which should be just about right for applying TechLine's DFL1.  The housings are to big for my toaster oven, so I'll most like convert my homemade blasting cabinet to a homemade oven with a few halogen light bulbs.  Techline's coating cure at 300F, which isn't difficult to attain and maintain.