Dear Radiator fans;
I cleaned a big radiator I got used and was pressure testing it in a big bucket of water with a dr. Drop and a co2 tyre inflator.
It is not holding pressure.
I only load it with a few bar of pressure.
I see a slow bubbling where the copper tubings are connected to the steel manifold plate with rubber grommets.
I changed the thin rubber gasket with a new o-ring.
It is leaking slowly at both ends.
Is the tubing grommets going bad ?
Can I reseal it with a soft silicone bathtub calk or some other goo or glue?
Has anyone had problems with these radiator rubbers getting old and brittle?
Are they replaceable? If I send it back to Germany can they rebuild this or can a radiator shop re-build this?
The grommets seem to be press fit and may require special tooling to force the rubber over the tubs and manifold plate?
I see new units available for 200 or so USD. I am thinking of buying a new unit and sending the old unit for factory overhaul.
I can always find a place for a spare radiator somewhere.
I noticed the slow leak with leaksheild reporting this radiator loop as leaky.
Photos and bubble video on demand.