So my paint and body guy came to look at the car prior to paint and he said if I wanted the engine bay done properly I would have to get rid of the undercoat that has been haphazardly sprayed all over. Fast forward through the weekend (I spent the whole weekend trying to get it off and most of it is gone but not all). I accomplished all this with a combo of professional strength goo-gone, scrapers, screwdrivers, a power-washer (my idea of soaking it in goo-gone and blasting it did not work btw).
Long story short the engine bay is mostly cleaned up and will probably require scotch brite and hours of scrubbing to get the little bits off.
Now to get to my question: Is it worth stripping the bottom of the car? The undercoat appears to still be in-tact and there is little to no rust. I will need to remove it in some spots to weld in the subframe connectors and treat the very limited amount of rust down there but is it really worth it to go through hours of labor (I broke down and bought a pneumatic chisel) to remove something that has apparently protected this car from rust pretty well for the past 33 years or should I just clean it real good, treat the small problem areas and spray a light coat back over it? I really just want this thing to last and am more-so worried about preventing rust than making it look perfect.
Also what is the best stuff to use for undercoat? I was going to treat the rust spots with a wire-wheel and por15 and then coat with *suggestions here* (3m professional undercoat?)
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