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Discussion Starter · #1 · (Edited)
So; after spending a day working on the existing exhaust through hull, which rotted through at the exhaust hose connection. I have decided to drill out and replace the entire through hull (The current one is embedded in the hull).

So, the current port is connects to a 1 7/8 ID hose. My questions are:

1) One day I plan on upgrading to a approx 25HP, what size should i increase to??
2) what is a nice through hull?, most of the ones I am seeing are chromed and have a flap, and look like a they belong on the back of a sea-doo.

I would like to keep the integrity of my 1971 boat- so something bronze, internal flap would be good... but something that looks nice. ???
 

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Discussion Starter · #4 ·
also... I would prefer a threaded port; i see a bunch that have a collar that you would screw or bolt on to the hull; i prefer not to add additional holes into my boat...
 
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