Re: Look what I found! Look what I found!
I've had great luck using brake fluid, or diesel fuel, or marvel mystery oil. Haven't use PB blaste yet.
If you can use a hot air gun on the cylinders and get it hot so it will expand it may open up the bore so the penetrant you're using can seep in deeper. It'll probably free up with a little persuasion from the wooden handle of a hammer once you get the head off. Then try rocking the crank left and right with a wrench.
I've freed up alot of motors that locked up from just setting that way.