I don`t want to be a "downer", but sometimes, corrosion is just too severe to have a happy ending. About 10 years ago, I bought a 59 Ford parts car, that had a 68 390 just setting on the mounts, but never fully installed. The guy I bought it from, claimed that the 390 ran great, when he pulled it from a Galaxie, and stuck it in the 59, and get around to having it driving "some day". Some day turned into a few years, with the car sitting outside, with no carb, but a towel and tarp over the engine. Anyhow, when I got the car home, the crank wouldn`t budge, even with a breaker bar, so I tried all kinds of penetrating oils and homebrew concoctions that were "sure to free it up". I was in no rush, so over a period of about 3 months, I poured the following liquids down the intake manifold carb holes, and filled the cylinders as far as I could, be the following, all tried after allowing each to attempt to soak in for at least 2 weeks each. I tried PB Blaster, Marvel Mystery Oil, Liquid Wrench, diesel fuel, ATF, ATF mixed with solvent, and brake fluid. Each liquid was allowed to set for several days, when I would try to get the crankshaft to turn, and with all those "cures", and all that time, it never would budge. At that point, I figured it would be nice to at least be able to salvage the crank and rods, and hopefully the block, so I pulled the engine and removed the oil pan. The bottom end actually looked pretty clean, with no rust on the crank and ros, the bearings even looked decent. But when I tried to knock out the pistons that had the rods positioned in a location where the nuts for the rod caps could be removed, it was evident that the problem was that the pistons were totally corroded to the cylinder wall. I was able to get a few of pistons out, by really hammering the hell out of the pistons from below, and a couple of the pistons shattered in the attempt. After 3 months of various fluids, none of them ever made their way down the sides of the pistons at all. The rest of the rods, I had to cut off with a torch, to be able to remove the crankshaft, which was surprisedly in great condition. Other than the crank and 3 rods, the rest went on the scrap pile. The aluminum pistons were all that white fuzzy mess, and I guess that caused them to expand and eliminate any clearance between the piston and cylinder walls, and prevent any type of fluid to get past.
