I've cut down a boat engine. I imagine it's a similar P.I.T.A.
I cut lengthwise through the bore, then used an air chisel to break off the liner. There is probably an easier way, since I know some rebuilders drop the liners whole. Although this one almost appeared it was cast around the liner? I dunno. I'm not an engine expert. I just destroy things.
If you're in this for the long haul you might look into building a furnace. That's one of my projects I have on a back burner, pun intended.
Member here has some videos on that. Not sure if his user is the same, but on youtube I believe it's "Oil Burner"?
He uses waste oil, which is what I plan to do also. I don't see how it would be cost effective to buy fuel or electric to run the size furnace needed to melt down engine blocks.
The beauty of his setup is you can toss all kinds of junk in there, and return to a molten pool of aluminum. No need to spend hours getting every nut, bolt, screw, whatever off, as I am guilty of having done. Toss it in and go work on something else.
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