Repeat heater core failures
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Fleet Mechanic
Joined: May 2013
Posts: 1,256
Likes: 4
From: NC
Glad you figured it out, the brass cores are a heckuva lot better than the aluminum ones. One other thing that will help, is soldering a ground wire to the core and running that to chassis ground (firewall works well). It will help prevent damage from electrolysis. You can also add a radiator cap that has a sacrificial anode to help prevent it as well.
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Fleet Mechanic
Joined: May 2013
Posts: 1,256
Likes: 4
From: NC
The ford heater core kkjust barely made it into November. This one has some noticeable pitting around the fittings, I am 100% it is electrolysis, for right now, I bypassed the core, gonna drain it and refill with some fresh green coolant, distilled water and VC-8 additive. cleaned all the underhood grounds I could find, added a 4 gauge ground cable to the engine to frame connection and plan on adding some to the body to frame connection. Thinking of going with a ford Bronze heater core so it is a similar metal to the radiator, any input?
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