Thermal Cleaning...Check it out.

What ever thermal cleaning is, it does a good job.

Could you explain the process to us?

Sure.
First the part goes into a thermal oven. Each oven features a main burner that will bake and
carbonize any grease,oil, paint, debris, or dirt on the work piece.Basically turning everything in to ash.

After baking, the parts are transfered to a blasting cabinet. The part is blasted using a special media (stainless steel pellets in my case). Both cabinets turn the part like a chicken on a rotiseree.

And thats basically it.
Cost me $50. But now I have a close to new 340 intake. :)