I had a lot of rust in the engine block I am assembling for my car. The engine machine shop must not have left it in the grease/derusting tanks long enough to remove all the rust. I used various tools, including screwdrivers and a drill with a broken speedometer cable, to remove as much of the caked on rust as I could. Anyway I am worried any remaining rust will clog and mess up my newly recored radiator. I did two things to prepare for starting of the engine, which I haven't done yet. First, I bought a Gano upper hose filter. The filter is about $35 and has two screens in it; one that has a hole in it about the size of a quarter and the other screen is solid. The crud will past through the first screen's hole, hit the solid second solid screen and fall into the space between the two. The Gano filter has a clear area that lets you see how much crud is collected, so it can be cleaned out when it looks like there is a fair amount of debris caught in the filter. I also plan to do what Tom W did and fill the radiator with pure vinegar and run it for a while. I also called Gery Bergbower of Berg radiator in Illinois and he said the vinegar will not hurt a radiator, unless, like Tom said, it has problems that rust is sealing. Gery said he uses vinegar to clean radiators. Hope this helps.
Rusty Nelson
