Removing Hard Blok?

Anybody ever have any success getting Hard Blok water jacket filler out of a block? Any magic method? I don't want to junk the block.

there is a type of acid ..that has been used .. think its called muric acid . but don't quote me on it . takes a long time though ..sure it was mentioned in a thread on here a while a go

one of the Dudes on the race only forum will know i'm thinking

Be careful, Muriatic Acid + Aluminum = bomb

Frankly, if it was done properly, it will be extremely difficult, if not impossible. And I would worry that if you managed to get it to break up, you will be hard pressed to get out all of the pcs., which will make a mess of your cooling system.

Unless it's the original motor to your car, sell it to a racer and move on.

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Frankly, if it was done properly, it will be extremely difficult, if not impossible. And I would worry that if you managed to get it to break up, you will be hard pressed to get out all of the pcs., which will make a mess of your cooling system.

Unless it's the original motor to your car, sell it to a racer and move on.

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It's not worth the hassle or the risk.