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I have been changing out the exterior bolts to stainless, and running across that the nuts that are in the body are bad . Some I have found on the windshield hinges some on the rear swinging doors. Can’t seem to figure out how to get this issues resolved.Can you be more specific?
They are not designed to be changed. Carefully running a tap through to clean up threads is about all you can do. As mentioned, stainless isn't necessarily the best choice for replacement.yes and I see no way of getting behind them to change them out , I tried to run a tap through them so maybe I could save them some work some don't.
yes, everything I have replaced so far with stainless I have used anti seize , I'm using a foam type penetrating oil ACF-50 it seems to be working on some of them .You may be able to rivnut them, but that would be my last resort. What are you doing to try and free everything before removal?
I'd recommend soaking in some sort of penetrating oil like Kroil, or an ATF / Kerosene mixure for a few days, then heating the snot out of them to loosten everything up. Just hitting them with an impact or ratchet is a good way to break them, and then you are really screwed if you can't drill them out cleanly.
For the already messed up ones, I personally would be cutting out the sheet metal, replacing the nuts, and then welding back in place, but that may not be the best for you. Rivnuts can work, but can break free and spin in the thin sheet if you over tighten them or they get corroded.
Galvanic corrosion could be a problem for you with the SS to mild steel, so just be wary of that. I'd antiseize everything that you replace.