| 1936TWC | -- 10-11-2018 @ 10:14 AM |
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It appears I have a slight coolant leak on the top surface of my aluminum head . Like a pin hole leak. Has anyone experienced this? What is the remedy?
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| shogun1940 | -- 10-11-2018 @ 6:47 PM |
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Can you show a picture?? Al can be welded
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| Drbrown | -- 10-11-2018 @ 9:24 PM |
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As far back as the early 1980's Cadillac had problems with their OHV aluminum heads, head studs and radiators and specified that a certain additive be put in the cooling system to seal any cracks etc. To my knowledge there are still cooling system sealants made specifically for aluminum parts, and you might want to try one before trying a welding procedure.
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| 1936TWC | -- 10-12-2018 @ 9:37 AM |
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Thanks for the reply. removal of Aluminum heads can be a challenge to say the least. Could the additive be added to coolant system then run. Would welding require removal of heads? This may be a tough assignment.
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| MG | -- 10-12-2018 @ 10:32 AM |
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This stuff really works without having to drain or flush your cooling system. > https://www.kseal.com/products/k-seal "K-Seal is compatible with DEX-COOL and all other types and brands of antifreeze/coolant. Unlike many other products, there is no need to drain or flush the cooling system before adding K-Seal. Just shake, pour and go!" I have used this stuff in my '34 E/W aluminum heads and it really did the job for me on a leaky head stud. It will not clog up your cooling system.... This message was edited by MG on 10-12-18 @ 11:03 PM
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| 1936TWC | -- 10-12-2018 @ 1:35 PM |
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Thanks for this. one wonders if there’s more going on. I will give it a try
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| Drbrown | -- 10-12-2018 @ 10:31 PM |
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Welding is labor intensive and reasults unpredictable. MG is into it. You can find supplements at a GM dealer. Barsleak offers them too. I believe they make them for GM. http://www.barsproducts.com/ If you are changing your coolant and/or flushing your system, consider the option of adding a Coolant Supplement in pellent form to the system to guard against any incidental leaks from porosity in one of the aluminum castings or a gasket imperfection. To be effective, about 4 pellets are inserted in a lower radiator hose. I recommend searching a number of forum archives using "coolant supplement" as a topic.
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