Difficult to replace cast iron stack?

[papakevin]

I have opened up an old kitchen wall and have quite a mess (see photo.) I’m planning on replacing all the plumbing with pex, but the old cast iron stack is concerning. Is this something I can replace myself with schedule 40? How difficult would this be? Any suggestions? Thanks.

 

[oldognewtrick]

It's not difficult. But you need to support the vertical run before you cut the pipe. Fernco fittings are easy to blend cast into pvc drains. It's a rubber bushing with two clamps.

 

[billshack]

If it is not leaking then why change it , i have seen cast iron still good after 100 years .

 

[user 4883]

If it is not leaking then why change it , i have seen cast iron still good after 100 years .

not to mention, cast is quieter than PVC