Re: Derusting Engine Blocks

Posted by Joel Rapose on May 03, 1998 at 17:40:54

In Reply to: Derusting Engine Blocks
posted by Larry on May 02, 1998 at 09:29:40

: I have a block that was very rusted. I took it to my machine shop and asked them to check it out. They did and went ahead and bored it for oversized pistons so they would know if the bore would clean up. My guestion is how do I clean all the rust out of the water jackets and not hurt the machine work? It's real rusty in there.
:Thanks Larry
Larry...I see this problem often...with marine engines..what we do is wipe all the cylinders with white grease...and any bearing surfaces with grease...then flush the block with muriatic acid...(swimming pool acid)...careful not to breathe any or splash on your skin...will give you a rash...and eat yer clothes..but desolves rust and calcium..and is harmless to metal...it will smoke and stink...but when you rinse with water...it will be all gone...really easy..
Joel Rapose, ASE Certified Master Engine Machinest

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