Lay it on an anvil on its side and hit it with a big hammer as hard as
you can a few times then turn it a 1/4 turn and hit it some more. This
will expand it a little a free up the rust. Or take it to a shop with a
good press and they will press it apart in about 5 min.

wrote:
Here they a
http://www.metalworking.com/dropbox/Picture_1097.jpg
http://www.metalworking.com/dropbox/Picture_1102.jpg
http://www.metalworking.com/dropbox/Picture_1103.jpg