Rejuvenating an old double basin wash sink

[ashyboi5000]

Hi guys first post.

I am in the process of rejuvenating a double wash sink.

It was needing the waste below looked at for a washing machine and dryer, as it had a sunken elbow and unbeknownst it was a mix of 1 1/4 and 1 1/2, including the sink wastes themselves.

I bought new matching 1 1/2 Belfast wastes and been able to remove the bigger of the two. Unfortunately it appears to have been a bit of a bodge and was packed out with stuff. Some is still sticky, some has set, but both appear to potentially be ACM as there are fibres in the mix.
Even a home made lead washer/seal.

I am now unsure how to proceed.
I'd guess the hole was 2" and I'm best to remove the excess material.
I see McAlpine have a few different options but don't know what shape may be best. I do need to get back down to 40mm BSP.
I'm also limited with space underneath and was planning to go direct to 90elbow.

So advice please?

 

[ShaunCorbs]

Would clean it off and see how it looks you with the 11/2 one but you can get 2” Belfast sink wastes

 

[fowlerboi]

I would expect you'll want one of these

https://amzn.eu/d/d0ab5YB

 

[ashyboi5000]

Unfortunately what was used to reduce the hole size is a bit rough with a large chunk out and I don't see how a seal can be created.

I think that Amazon item is what I require, Screwfix also has a cheaper option but would require a thread reducer.