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Russ/40 · 07-09-2010, 12:11 PM

Tilt the block so a deck is level. Degrease the bores as best as you can. Fill the bores with Phosphoric Acid. It will dissolve the rust. All the penetrants in the world will not dissolve rust.

07-09-2010, 12:11 PM	#17
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: Another stuck Flathead story.... Tilt the block so a deck is level. Degrease the bores as best as you can. Fill the bores with Phosphoric Acid. It will dissolve the rust. All the penetrants in the world will not dissolve rust.