Originally Posted By: mechtech2
The old fix was to heat it with a torch until it was burning red hot, and then turn off the acetylene, crank up the oxygen, and the oxygen would burn the residue out clean.
I've heard that, but never seen it done. Makes sense.
Most of the TDIclub people use acetone (other stuff too) and elbow grease.
My thoughts were to find a machine shop and have it bead blasted. I was hoping to need this done at 250k. This thread has me raising eyebrows unhappily.