You might try to find a stock tank or a tub big enough to fit the radiator inside of and fill it with water/oxalic acid. It's perfect for cleaning and restoring brass and copper alike- it'll clean all the junk, won't hurt the metal, and you won't need any plugs. Just be sure to flip it and soak it a second time to clean any areas previously blocked by trapped air. Remove all of the air that you can by gently shaking the radiator while submerged as well as keeping a corner elevated to allow it to escape.So a few weeks back I managed to get up onto the mezzanine deck and locate and retrieve the radiator that had been in my Monte prior to the start of its rehabilitation. This week, while doing a major cleanup and sorting of all the debris that had accumulated over time, I elected to bring it down and take a good look at what shape it was in. Externally, it looked perfectly useable; no signs of corrosion or copper cancer. Only thing that I did notice was that it rattled like a maraca when I shook it. So I unscrewed the cap and a flurry of while debris cascaded out when I turned it upside down. A quick peek down the throat of neck disclosed major deposits of white calculus around the ports for the cross tubes. I do happen to have another potential candidate up there as an alternative but getting to it means another trip upstairs and that would mean having to do a lot of sorting and shuffling of stuff up there into the bargain. The mezzanine is my very long term storage area and anything up there tends to rival the Sahara for depth of dust.
So I guess the next step is to either try and locate a rad shop around here that actually knows how to wash out radiator tanks or find some kind of solution that I can use to do it myself. Along the way I will also need to find some bungs or plugs to stuff into the upper and lower rad hose nipples as well as the filler neck so that when I dump the cleaning solution into the tanks it will stay in there and do its thing instead of bleeding out all over whatever is below it.
Not too sure about where to source those plugs. Used to be you could buy kits of them but that was then and this is..................well not then and demand does not equal supply.
Oh, yeah, along the way I did drop my Monte off its jack stands and back onto the dollies so I could move it around by myself. Makes cleaning and access a whole lot easier and simpler to effect.
Nick
Regular CLR won't do enough. It's good for scrubbing rust stains and calcium buildup off of things but it absolutely will not dissolve what's inside your radiator enough to be flushed out.Actually this brings up a thought and question, Will CLR purge a radiator core of the "salt" deposits around the tubes?
Nick
here's another alternative which is supposedly safe to dump to creekRegular CLR won't do enough. It's good for scrubbing rust stains and calcium buildup off of things but it absolutely will not dissolve what's inside your radiator enough to be flushed out.
They do, however, sell a Heavy Duty Radiator Flush/ Cleaner: https://clrbrands.com/PROLINE/Products/CLR-PRO/CLR-PRO-Heavy-Duty-Radiator-Flush-and-Cleaner
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