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post #10 of Old 04-22-2019
Uncle Bob the 1st
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Re: Thru Hull Modification

Quote:
Originally Posted by Jac123 View Post
Photos of both thru hulls
Hi, if you were to have the old fitting machined to act as a washer for the new fitting through it, effectively acting as a washer to reduce the old hole to the correct size for the new fitting then when installed with an appropriate sealant it should work exactly as planned. You could probably achieve this by cutting the head off the old and counterboring for the new, but a lathe would do a better job. The thread dimensions appear to be similar, although not the same so precludes using the old fitting with new seacock but it should fit perfectly, if done right.

Cheers, Uncle Bob the 1st from Sydney Aust.
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