Cleaning rust from water jackets.

[4tford]

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I sometimes spend a week cleaning block inside and out before taking for hot tank. When I get it back I clean inside again and it is not uncommon to get piles of stuff out again. I use an air line with a 10" pipe on it to blow out as much as I can. Then I flush with water to get the rest. I had two done in a bake oven and was surprised ant how easy the rust and crud came out.