Hunter 34 owners, hull & liner thickness near keel stub?

[DeniseO30]

On my boat, the AC intake is half-inch and improperly. installed I have a new 3/4" sea valve prepped and ready to go in the same place after redrilling the hole. Also made backing pads out of G10,
here's the problem, I don't have enough height, it's only 4.5" to the bottom of the sole that covers the bilge. I'm pretty sure that the liner where the valve is going to go will need to be cut and the backing pad epoxied to the hull bottom. And (shudder)may have to forget the backing pad if the hull is thick enough, Sorry I don't have a picture of the actual valve location and won't be at the boat until some of the snow gets melted!.

was

Will cut & shape pad at the boat in a couple weeks I guess. t
The weather's been really awful here in the east. The 3/4" Buck Algonquin seavalves are the shortest ones I could find at 2 -11/16" add 3/4" mpt to barb 90, it is just 4.5"!

 

[kloudie1]

I don’t know the thickness; how about a thru-hull to a 90 then the valve?

 

[Allan12210]

After we bought our H34 in 1985 we happened to be in Florida on vacation by early 1986. We visited the Hunter factory in Alachua where they were still building our model. I remember they told us the bottom of the hull was 1-3/8 inches thick.

 

[DeniseO30]

I don’t know the thickness; how about a thru-hull to a 90 then the valve?

That was my first plan but, I realized it would negate my first reason for doing this, which is to have straight way down through the valve to clean from above, without diving on the boat!

 

[danm1]

On my 34, the ac hose ran from a thru hull under the first hatch in the quarter berth (same as the engine intake). Plenty of clearance.

 

[Ralph Johnstone]

Sorry, but from the dimensions you've given, it won't fit even if the base of the valve rests on the hull floor with no backing pad.

Just pulled a bronze 3/4" street elbow out of my desk (don't ask what else's in there), and this is what it measured:

With the thru hull assembly at 2.69" and the street elbow at 2.00" when taken up, you're at 4.69". And you can't install it like that even out of desperation.

Go with @kloudie1 and install a guaranteed, certified, BRONZE 90° street elbow on the top of the thru hull using teflon tape and a paste sealer such as Permatex 2. Remember, you will now have THREE threaded joints without a valve on this thru hull.

You will be matching NPS to NPT threads if using the street elbow so consult with Buck Algonquin for their recommendation on parts.

 

[Ralph Johnstone]

it would negate my first reason for doing this, which is to have straight way down through the valve to clean from above, without diving on the boat!

This is how I quickly unclog our engine thruhull which gobbles up everything that comes with ten feet.

Close the valve, remove the plug, attach a clear vinyl hose about 18" tall, open the valve, jam a coat hanger down the tube and through the valve into the open water, and VIOLA, it's clear.

Reverse the process and it's "see ya later".

Unfortunately, that won't work for this valve in this location. Any chance of using another nearby thru hull ?

 

[DeniseO30]

After the valve I'm okay with marlon hose fittings given the fact that everything after the "BRONZE" thru valve is plastic or rubber, even the pump.
If the present location doesn't work we can relocate behind the engine which means drilling sideways through the grid under the quarter berth. Which, would not be a bad thing the AC unit is inside the nav station not down in the like many other boats.
But but I won't know till I get back to the boat!

 

[DeniseO30]

This is for those that don't know pipe terminology

Understanding NPT, NPTF & NPS Thread Connections

Understanding NPT, NPTF & NPS Thread Connections - Learn more about various pipe fitting thread connections to ensure proper selection to create leak free seals.

www.buyfittingsonline.com

 

[DeniseO30]

It's going to be tight and probably not work but again I won't know until I get to the boat Elbows

 

[DeniseO30]

Edit, (Fixed typos)
Looks like it's going to work! I picked up a fitting 3/4mpt X 3/4 barb hose 90, turned it into the valve and I have 4.25" from the valve base to the top of the 90,
If the grid liner that comes down into the false bilge is 3/8"- 1/2" I should be able to cut that out, mount the new G10 plate on the hull!
Finally getting some snow melt here I should be able to get back to the boat later this lor early next week to verify this but if anybody actually knows how thick the grid liner is into the bilge it would be appreciated information!

 

[Ralph Johnstone]

OUCH , time to go back to the drawing board.

If the new thru hull assembly is 2.69" tall as you stated, how did it shrink to 2.25 after you added a:

3/3"X3/4" hose 90,

although I'm not quite sure what a 3/3"X3/4" hose 90 is.

Enquiring minds want to know .

 

[Ralph Johnstone]

I picked up a fitting 3/4mpt X 3/4 barb hose 90, turned it into the valve and I have 4.25" from the valve base to the top of the 90,

Excellent. Hadn't even thought about a 90 deg. NPT X hose adapter. Those are more boxy with less less height than a standard 3/4" pipe fitting.

Pls. send pics to show how it's jammed in your bilge.

 

[DeniseO30]

I finally made it over to the boat today I must be losing my mind I have no idea where I came up with a four and a half inch as the only clearance I had it has more like six and a half!

It is quite obvious why the flow wasn't getting to the AC pump, plus I had an inline strainer inside also!
The old 1/2" bronze mushroom has to come out it's in there with 5200 do I proceed with a small hand torch? seems best should safe enough.

 

[Ralph Johnstone]

I have no idea where I came up with a four and a half inch as the only clearance I had it has more like six and a half!

I have taken the liberty of informing Ripley's Believe It Or Don't of your most unusual experience. Myself, it's usually been the other way around.

I presume all of the surrounding screen and metal border is being removed ? Does that leave the mushroom head proud on the surface of the hull.

If it were me, and I'm thankful its not, if it DOES turn out that it's not going to budge, rather than risk either mechanical or high heat damage to the FG hull, I'd take the time to very carefully grind off the head flush with the hull. The joint strength between the FG, 5200, and the internal pipe would be far less then but may still present a problem.

Post again if that happens and maybe we can get a prayer meeting going for you.

5200 is no fun, regardless of what the parts are.

 

[DeniseO30]

Actually got a couple more days on the boat but now we're back in the low 30s again & they calling for snow,
1-1/8" hole saw fit right over the old half inch ac intake mushroom 5 minutes later, lalala!

The engine intake although it was actually still three quarter it was literally only in there by about two threads maybe three after cutting through with the multi-tool it literally fell out!
Hull is a good 1" or more thick near the keel stub, doesn't really need G10 backing plate but since I had that little triangular one under there it's just easier to leave it t
and epoxy it in place yeah yeah everybody likes round
The engine intake was three quarter and it has a three inch round pad cast into the hole but it has stepped on one side so it needs to be built up with epoxy going to use a big triangle piece of G10 alongside the shaft log bump

 

[Ralph Johnstone]

Guess it helps to be there from the start to get a better picture. Nice job of whacking off the valve at the nipple using a multitool. With the OD of the old nipple being the same as the ID of the hole saw, you had it made even without pilot hole. A perfect removal with no compromises.

With the luck you've had on removing this thing, I'd rush out and buy a Super Ball ticket tonight.

 

[DeniseO30]

Just an update, the new flanged valves are in, only one has G10 under it the other we built up the epoxy.

I have the answer to; "what is worse than 5200?" Black 5200! ( didn't realize it was black till back on the boat

 

[DeniseO30]

I keep forgetting to make it update!

things went well on launch day! the new flanged through hull valves did not leak a drop!