[Fot] Loosing stuck pistons

[Robert Johns]

Duncan has suggested using Muriatic Acid to free the pistons.  Most all acids
will eat into the iron of the block.  I suggest to use Sodium Hydroxide ( Lye)
instead.  It will not eat into the iron and will dissolve the aluminum.  I
have salvaged many two cycle cylinders and small engine cranks with aluminum
con rods,  that had the aluminum welded to the steel or plated surface,
usually due to insufficient oil.   The aluminum comes off clean and all you
need to do is to smooth up the cylinder surface or crank pin.   The warmer the
affected surfaces, the faster the chemical reaction.  Make sure us use good
rubber gloves and a chemical mask.
Bob Johns