Preventing electrochemical corrosion alloy heads Any ideas on preventing this type of corrosion or slowing it down. Mine are Eddelbrock heads but I guess the make is immaterial. The engine has not been run with coolant in it yet.
Any ideas appreciated. |
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Nearly all modern engines use a lot of aluminum in them. Corrosion of these parts is not much of a worry these days. Even my Aston requires zero additives other than modern anti-freeze / coolant. |
Re: Preventing electrochemical corrosion alloy heads Excellent Read > http://www.sancarlosradiator.com/VoltageDrop/water.htm
Consider this stuff as well > https://no-rosion.com/norosioncoolant.htm |
Re: Preventing electrochemical corrosion alloy heads Depending on the climate you are in, No-Rosion and Reverse osmosis water is not only an effective coolant, but it eliminates corrosion. When you install the heads, coat the studs or bolt shanks with graphite petrolatum anti-seize, and you will be able to get the off again in the future.
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Re: Preventing electrochemical corrosion alloy heads Interesting subject. I just pulled the water pumps. They were rebuilt by the guy in Florida and installed eight months ago. Used Ethylene Glycol (green stuff). 50/50. We have pretty hard water. Should a guy use premixed modern anti freeze.
https://i.imgur.com/EFtCIxNb.jpg |
Re: Preventing electrochemical corrosion alloy heads I have installed a sacrificial anode, if only for mental health reasons.
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Re: Preventing electrochemical corrosion alloy heads Mike,
As in Martin? |
Re: Preventing electrochemical corrosion alloy heads Me, personally, I use 50% antifreeze mix, sacrificial anodes, anti seize on all head studs, numerous grounding straps, including one of those rubber ones that drags on the ground. Like the Irishman who wore two condoms; to be sure, to be sure!
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Are you using zinc or a zinc solution as an anode? If it is zinc how do you get it into contact with the aluminium and in the electrolyte as well? Cheers Marcus |
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Tell me more about these grounding straps you use. Do you ground the engine direct or what? What material are the straps etc. Cheers Marcus |
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They are meant to eliminate the build up of static electricity in the body of the car and have nothing to do with eliminating engine corrosion. Just Google 'static strap' for availability. |
Re: Preventing electrochemical corrosion alloy heads Reverse osmosis water may not be your best choice. Water that has been striped of all it's elements will want them back and will go after the softest metal first. You want water with a neutral PH of 7. Any thing less is acidic, not good for aluminum heads. Anodes in the radiator will be a big help, zinc or magnesium is best along with the proper antifreeze. I used to work with DI ultra pure water and was amazed at how aggressive it was and how it rusted the best tools we had. Just my thoughts. Frank
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Re: Preventing electrochemical corrosion alloy heads The zinc anodes I make. Get some 1/2 dia zinc rod [I buy it from local marine shop], cut to suitable lengths. Cut a 1/4 pipe thread on one end. Get a brass 3/8 pipe plug, it'll have a recess inside it. Tap that out 1/4 pipe thread, screw in the zinc. Now you've got something that looks very similar to a temp gauge sender...Screw into the cylinder head. Job done.
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Re: Preventing electrochemical corrosion alloy heads Here's zinc anodes: https://www.boatzincs.com/engine.html
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Re: Preventing electrochemical corrosion alloy heads The best bet is to use pre mixed and change every two years and you will have no problems.
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