Conversation Between patSS/00 and RGSS

Sorry <i did not see this in a few days.
The OD of the aluminum inserts was reduced till it did fit in the tailpípe.
You are right, the pipes are not perfectly round.
I have a lathe at home and do most of my machining.

Hello, I'm copying your idea of inserts for the Magnaflow tailpipes that you posted about. Just wondering if you had problems getting the aluminum rings to go inside the pipes. My rings are 3.4 (actually closer to 3.39) diameter, but will not quite fit. Did you just keep reducing the diameter till they fit (this costs me $$ at a machine shop)? Or press fit with pipes off the car? The tailpipes aren't perfectly round, apparently. Thanks for any feedback.