Gents:
I am in the process of the second total ground up rebuild of my car. I removed what I believed was the factory belly pan by drilling out the rivet heads, and did the same in the last rebuild.
In doing so, the crush end of the rivets are trapped within the walls of the chassis tubes. My concern is, track time will cause this debris within the tubes to vibrate, thus removing chassis material in acting as an abrasive.
Presumably, I need to drill holes in each rail length large enough to extract the debris with a magnet, say 0.3125”. And do these larger holes need to be plugged? And if so, how?