I don’t know much about plumbing over the last 200 years but I think it’s safe to assume that the people that had to install cast iron plumbing for their whole lives were in a hell of a lot better shape than me.
When we first opened the flooring up to expose the plumbing a couple of days ago, our thought was to figure out a way to move the toilet over a couple inches towards the wall and to run new PEX plumbing to all the new fixtures. Since then, there had been an a lot of changes because of the way the cast iron piping came into play. Under normal circumstances, any revision of this bathroom over the past 100 years would have moved it over to the left giving more room to either side of the toilet instead of sitting down and having your knee rub against the vanity. Also having the extra room would make it easier to slide the vanity over as well so you can open the door up all the way without hitting into the corner of the vanity.
The process of placing the toilet where we want it to go will require us to remove all of the 4″ cast iron and replace it with 3″ PVC because of it’s smaller diameter and will get the toilet closer to the wall. Since I have already cut the cast iron pipe about 3 feet below the floor when I did the Laundry room a couple months ago, it will be easy to change over. I had to technically splice a four foot section of 4″ PVC so I could tap the new sink and washer drain plus the vent for the two. So the game plan would be to remove all the old plumbing and start with the new plumbing down in the wall of the laundry room. I used a no hub cast-to-PVC coupler so I can just unbolt the flange, pull out the 200 pounds of cast iron then glue in the PVC to start the new drain line to the master bath.
Here is the image of the cast iron removed. This will be enough for tonight.