Home Testing A Heater Core

[Malagatii]

I seem to have collected a couple of heater boxes along the way and would like to test the cores for leaks before I sell them. Any suggestions? I was intending to just put a stopper in each end and then submerge them in a bath tub looking for bubbles, but is that enough pressure?

[Conserv]

Have you tried a search yet? There was a recent long thread initiated by thehackmechanic on the subject of pressure-testing heater cores.

Steve

[c.d.iesel]

RIG A HOSE connection so you can pump up to 20 psi pressure,

submerge core in bath - watch for bubbles

 

 

it sould be obvious if it was leaking by dried antifreeze residue

staining

['76mintgrün'02]

I saw one post where somebody cut a bike inner tube and used hose clamps to attach it to the core and then pumped it up using the valve stem. 

[Malagatii]

Now that's a great idea. Thanks!