Non-standard flange removal/install

[sean_cabbagetown]

Hey there guys - great forum with lot's of useful tips.

I am replacing my toilet, which should be an easy job, however the previous owners appear to have done some sort of complicated install job previously.

If you check out the photos, it looks like a 4" abs pipe with an abs bush fitting glued inside (or similar), and the original flange was attached to that (I don't have a before photo).

Based on the internal diameter a twist in or push tite won't fit, so I think that leaves me with a Oatey 4" over/external flange. My question is:

1. Any issues with an external flange like this?
2. Any special installation instructions? The internet doesn't have much (I assumed ABS cleaner and cement is sufficient).
3. Anything else you would try?

Thanks in advance for your help!

 

[Reach4]

If you check out the photos, it looks like a 4" abs pipe with an abs bush fitting glued inside (or similar), and the original flange was attached to that (I don't have a before photo).

My guess would be a 3 inch fitting with an ABS closet flange glued to it. Then most of it was cut away. I don't have high confidence in that guess.

My shortcut approach might be to put down a wax ring with a Danco Hydroseat over that.

 

[Sponsor]

 

[Terry]

What kind of access to you have below if you need to make a cut there?
If I need to ream out a pipe from a fitting, I use something like in the picture below.

A Reed pipe reamer and a Rambit.

It looks to me like it may have been a closet flange with a hub glued onto a 3" ABS pipe.
They also make in inside flange that may work for that.

The one below pushes inside a pipe.

 

[sean_cabbagetown]

Thanks guys - think you are right.

Access is limited from underneath, so making a cut is unlikely. Reaming and the push tite might be the best combo.

Thanks!