Originally Posted by Deejay
Originally Posted by Rog
Originally Posted by Deejay
Be good to have a report back when done

No problem Doug.

Don't think it will be an issue. It’s the same shape/profile as the other spouts the hose connects to on the car - thermostat, header tank, head outlet manifold etc.
Interesting concept this, which I think few people would have considered.

FWIW, I measured voltage between the top of my sifab aluminium radiator and the OEM stainless pipe that runs across the top of, and parallel to, the camcover. I got 0.44 Volts!
I don’t know much about the detailed science of galvanic corrosion, but googling around, it would appear that 0.25 volts is seen as a critical figure.
However, in one article from “Allied Corrosion Industries” it listed the 4 requirements for galvanic corrosion to occur.
It stated that you need:
Anode
Cathode
Both to be immersed in the same electrolyte
There must be a return path for electronic current flow, also known as the “metallic path”

So from that, the fact that we have rubber pipes between anode and cathode, in the absence of the metallic path, is it really a problem?
Any contributions from experts welcomed.

Surely the path of conductivity can also be the coolant water + antifreeze which has intimate contact with everything we're concerned about corroding, I once wondered about adding some Fernox as I've found this very effective in stopping internal corrosion in multi metal central heating systems

Last edited by CooperMan; 15/02/24 07:28 PM.
Jon M