On an engine with a cast iron block and heads with an aluminum intake and brass radiator should some type of anode be used in the radiator to protect the intake? If so, where do you get them? I guess it would need to be connected to ground and not just hanging around in the top radiator tank. How would that done?
Magnesium anodes are best. I use chunks of RV water heater anodes from Amazon.com. https://www.amazon.com/dp/B07RCB3M1P/?tag=atomicindus08-20 You are correct in assumig that the anode has to be connected to something. I generally solder a short lead to the center rivet in the radiator cap that completes the circuit to the radiator and thence to the rest of the engine The galvanic table shows why thiis is. For a more detailed explanation, see this : https://www.fordbarn.com/forum/showthread.php?p=2041005&highlight=weak+battery#post2041005
https://boatzincs.com/categories/zinc-anodes/engine-anodes-complete.html This is where I have been purchasing and the brass capped ones just thread into a NPT hole where you decide to locate it....also, I've been running extended life coolant....
Thanks, I did not think of screwing it in a threaded hole.. I'll have to go down to the garage and see what holes would work.
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