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Reply to "Anyone experience persistent leaks with the Hall copper radiator?"

Gary & I had some discussions re radiators over the years. The Hall angled brass cores were an attempt to increase air flow thru the cores and tend to induce laminar flow, while turbulent flow promotes better heat exchange to air passing through. But I suspect its simple local water quality. Do you have a way of checking tap-water acidity? Swimming-pool sites have pH paper and there are other methods. Some drinking 'water' is close to the acidity of Coca-Cola! Some vendors that sell radiators- especially aluminum rads- now include a package of No-Rosion and it DOES work!

FWIW- my OEM brass rad weighed nearly 50 lbs (with accumulated debris in the tanks) while an aluminum rad weighed 18 lbs & holds more coolant. Turns out that water flow is more important than air flow, and most brass rads simply do not have core tubes big enought to cope with more horses. Alumium rad tubes are 1-1/4 to 1-1/2" wide while brass is not stiff enouge to support such sizes beyond 5/8". After changing everything in my cooling system including the water pump & pulleys, adding a Fluidyne alum. rad  dropped cruising water temp nearly 20 degrees F;  the whole  saga is in the POCA Archives (sorry, PPatt).

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