Justa suggestion. If you mix Muratic acid and water in a big bucket you can soak things like upper a-arms, spindles, caliper brackets, sway bar brackets, bumper brackets, etc.. I used a 5 part water to 1 part acid solution. I use it to clean my hot tub filter, so I think it is ok on plastics. Not sure what it'd do to paint.
Nasty stuff, so use chemical resistant rubber gloves. It de-rusted everything so far to a like-new metal finish, requiring minor touch up with wire wheel. Add more muratic acid to the mix when it stops bubblin'.
So far everything I have done this way, air dried then coated with POR-15 looks great.
Muratic acid should be cheap and availible at any hardware-bilding-type store (Lowes. Handyman, etc).
I did rinse the parts with water from hose after the soak. Wear goggles! Then just air dried, & touched up with wire wheel like I said. Course all my stuff fit in a 5-gallon bucket (had to turn the a-arms over a couple times).
Muratic acid is just a 10% hydrochloric acid solution. If you can't find it at a hardware store, try a pool supply place. As a side note, you probably should rinse with water to neutralize after soaking.
if you've alreadty sandblasted the parts to bare metal, a good self etchiching primier then paint, por15 works on metal that's rusted and stops the process, por15 also sells a product called metal ready that puts a zinc phosphate coat on bare metal and etches the metal making it ready to paint.
Shawn, I recently did my frame 69 ss chevelle, I stripped it with a wire brush wheel/grinder, then I soaked the frame with POR Metal Ready and rinsed according to directions. After it dried, I coated with POR15 I sprayed two coats then applied a thrid coat with a brush, (spray helped me get into the hard to get spots. I then applied two coats of POR chassis black semi-gloss. I will say this it looks pretty, and I dropped a rather large wrench on it the other day and it didn't even leave a mark on the frame. As for weather durability I probably won't know for another year or two. unless I hit the lottery before then!!!Dusty
i've used por15 on my 69 as well, looks great and wears like iron. i did sand blast the frame first and then coated. be careful if your thinking of spraying, i understand you'll need an outside air source to breath. the only down side i see to por is it's sensetivity to light,but that shouldn't be a problem with the frame.
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