Surface Rust in Coolant Passages.

[philcobill]

There is surface rust in the engine coolant passages in my 29 Special Coupe. The rust in the photo looks worse than it really is. I poked my finger into the holes and was able to almost wipe it off. I did not see any scaling or blocked passages in the block, and I imagine that things are okay below where I can't see.

My question is, is this something that I need to address now or should I wait and treat things after I get the head back on and things buttoned up? What would be the best way to address this?

Also, there are some minor scratches on the block. How should I addressed those?

Bill