Scope Strainer

[janiceandcraig]

I have a scoop strainer thruhull which was installed with a locking nut and valve threaded directly to the thru hull. I am replacing all of my thruhulls with tri-flange adapters on G-10 backing blocks which are drilled and tapped for the tri-flange adapter. I'd like to keep the scoop installed as is. Is there a way to bond the backing block to the hull and then install the tri-flange adapter without removing the scoop strainer thruhull? I can't see a way to screw the tri-flange adapter onto the thruhull and have everything line up to allow the adapter to be bolted down and still have everything snug.

 

[njlarry]

Imho, you will want to remove the strainer to properly rebed it. I have replaced all my thru-hulls and found a separate cover mounted over the outside of the intake made the most sense for me. If you want to use the strainer again it has nps threads so using a bronze adapter with a nps thread will allow you room to orient the scoop aft and still seal it with sufficient sealer though it seems like a lot of unnecessary work. If you insdead use a separate cover over the intake that will also allow for easier clean outs. For the amount of work it takes to do a thru-hull, the parts are cheap.
Good luck and marinehowto.com details the proper methods as does captwaynecanning youtube video.