dynamic balancer for brake rotor

How do I repair a 2 inch crack on top of my car radiator ('90 Honda)?

I'm thinking about PC-7 or JB Weld; those are pretty killer epoxies ... does anyone know ... can I solder it? Weld it? Krazy Glue?
It is a "hairline crack" ... literally the width of a human hair ... and if I squeeze it with my hand it


A auto parts store carries aluminum weld in a tube that's better than JB Weld. And to get a sure seal, sand down the area (coarsely) and follow directions on the tube.

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The fan flung something at the rad and it started pissin coolant so I fixed the leak with jb weld. Should hold fine most of my local rad shops ...

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