Soil stack troubles - old cast iron

[GeorgeOz]

Hi there,

I'm currently redoing my bathroom, new suite and moving pipework under the floor as it was previously on the wall.

Everything was going fine until I started on installing the toilet, it's a new close coupled compact pan and cistern. The problem I have is the old soil stack / waste is a very old cast iron one with a big collar coming in from outside angled upwards. It's about an inch higher then all modern pans waste outlet. I think I have spent almost £100 on parts to get this connected and make a seal but all leaked, until I realised it was a 3 1/2" or 3 1/4" soil stack coming in and not 4". I have bought a new waste connector for the pan at 3 1/2" size and cut it down to fit the waste, it has now made a seal and has been dry now for a week. Only thing is that it isn't a straight fit onto the connector it's angled as the soil stack is angled and I want to know will this be ok for the long run? A lot of people have told me to grind it back to the wall but I really want to try and avoid that.

or if anyone else has come across this before and has a solution please do let me know.

oh and just so you know this is the 2nd toilet I have bought in a matter of a week, the first one I learnt the hard way of how not to secure a pan to the floor with a drill!!!

Many thanks,

George

 

[stevetheplumber]

you have already been told the best option cut back to wall then 3.5to 4 multiqick extension i drill through almost every pannever broken one yet but theres still time

 

[kirkgas]

If you want the cat iron socket removed, take the pan back out, cut through the top of the pipe as close to the wall as you can saw with a hacksaw cut through till the whole blade is inside the pipe making a slot about 50mm wide, then get a club hammer and "skelp" the cast spigot, the pipe will shear right through the cut, you must be brave hitting the spigot no mamba pamby hits
Job done, then put the pan back in