Sewer 3" Cleanout pipe, but plug is 1 3/4" Would like to convert

[thesolidman1]

Hi, I have a sewer cleanout in my garage. It is a 3" pipe but the plug size is 1.75", it a appears to use an adapter or reducer. I would like to know if it's possible to remove the reducer and upgrade the opening to a larger size plug, so I could use a mainline snake with a root cutter. The cleanout is surrounded in concrete and pretty much flush, see pix.Thanks very much for any help!!

 

[Mr_David]

That is not a 3" pipe , but only a 2" you are looking at the hub of a lead joint fitting. Also not a clean out for the main line , to small. Probably just a lateral 2" line for a sink or laundry drain

 

[thesolidman1]

Hi, ok that makes sense as it is right behind the washing machine. Thank you very much for your help. So would this be OK to access the main sewer line with a snake? I was thinking of heating the pipe and removing the lead adapter, and then capping with an expandable rubber type. This would give enough room for a snake with a cutter. Thank you again!

 

[phishfood]

What Mr. David is saying is that the fitting and pipe beyond the cleanout are only 2", so you won't gain anything by removing the cleanout adaptor.