below water thru hulls

[Bill kubiak]

Got the motor out of my Inboard Penn Yan and I am looking at the thru hull raw water fittings and wondering.
there is the fitting itself and then the seacock and above that the fresh water rinse valve and finally the hose to the strainer.
What should I do.?

 

[Bondo]

Re: below water thru hulls

What should I do.?

as in,..??

 

[Bill kubiak]

Re: below water thru hulls

What is a good maintenance proceedure at this point, Pull it out, clean em up and reseal it just in case it could be leaking or should I leave it alone, this is a project boat and I have never had it in the water.

 

[Don S]

Re: below water thru hulls

If you have suspicions that it was or may leak, by all means pull it all apart and reseal. Make sure the valve works properly and isn't froze up.

 

[Bill kubiak]

Re: below water thru hulls

Gonna take it out, a close looks says I Gotta take it apart in sections what is a good sealing compound to use, I know 5200 is good but it is forever, what else is good for that

 

[Don S]

Re: below water thru hulls

You want it sealed "Forever" when it's below the waterline like that

 

[arks]

Re: below water thru hulls

"there is the fitting itself and then the seacock and above that the fresh water rinse valve and finally the hose to the strainer."

So I'm thinking you're asking if this arrangement is correct.
The answer is 'maybe'.
First, a proper seacock should be flanged at the bottom and attached directly and firmly to the hull. I see a lot of older boats using simple ball valves attached to pipe nipples. This arrangement can fail from excessive force moving the seacock valve. I prefer the triangle style with carriage thru-bolts, shown below.
The actual thru-hull fitting should be sized to thread into the seacock thru the hole in the hull. 5200 is the preferred sealant.
The hose is attached to the top of the seacock using a male hose adapter.
The use of plastic fittings below the waterline is, IMO, not a good idea. Marelon is considered acceptable, but I guess I'm old school- I like 100% bronze.
And don't forget to double-clamp all hose fittings below the WL.

 

[Bill kubiak]

Re: below water thru hulls

i have a clamshell self cleaning thru hull and above that a bronze seacock then a tee fitting then a freshwater rinse gate valve and above that a garden hose style connector,all bronze. the tee runs to the strainer then to the raw water pump.
Evidence points to the fact that everything that could leak, did leak and I am replacing everything that was old and showed signs of leaking.
This an old Penn Yan, 1980, and they built them like tanks back then.

 

[arks]

Re: below water thru hulls

Yeah, I agree those boats are beefy.
Sounds like you're doing it right by replacement, not just rebedding the old stuff. That's smart.