Yeah, that would work.This might be an incredibly stupid question, but WTH, I've never let that stop me before. I have a sandblasting cabinet in my garage for my job. Would it be workable or advisable to just stick the manifold in the cabinet and blast the remaining pre-cat media out with glass bead? Glass bead would not harm the interior (I think?) and would throughly remove every iota of pre-cat material. Then a high pressure air blast to clean. What say the sages?
It's somewhat extreme, however.