Reply To: Radiator core question for you all.

[Gregory Long]

Hi Tom, I’ve used a ‘Q-tip’ as a swab to mop the passageway with JB Weld or similar epoxy.

It is imperative that the passageway is clean for the epoxy to bond to the metal.

I’ve used a .22 Caliber brass or stainless steel bore brush to clean and prep the leaking passageway.

Clean the metal after brushing with Acetone or similar non-oily solvent.

I’ve had pretty good luck with this process.

Greg Long