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Old 10-07-2016, 10:44 AM   #101
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I also used the groco plates on mine, but purchase their seacocks that have the flange cast into the valve itself. Nice clean install, only issue was one of the flanges was drilled off center, not matching the backing plate. 1 out of 20ish, I guess not to bad. Just check before you smear the sealant everywhere!
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Old 10-07-2016, 10:46 AM   #102
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Krogen 42 Fuel Tank Replacement

Yes, they were served their papers. Stowaway mud daubers are pretty common in Florida (where our boat came from), as I'm sure you know. A worse place to find them is in the through hull of your bilge pump discharge. Had that happen when we launched last year at a time our shaft seals were leaking prolifically. Ugh!
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Old 10-07-2016, 11:10 PM   #103
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Now thats a right nice remote oil filter setup.

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Old 10-08-2016, 12:46 AM   #104
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I have one thru hull epoxied in place. Same kind of thru hull as the others, the genset one kept loosening, so in necessity got itself epoxied in place. Maybe it was getting vibration from the genset but I doubt it, the 3cyl Onan/Kubota runs smoothly enough.
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Old 10-08-2016, 11:17 AM   #105
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Originally Posted by O C Diver View Post
I'd like to tell you the wasting of that nipple is rare, but it's not. Unless you buy name brand (Groco or Buck Algonquin), a lot of the metal is junk from China ect., not quality bronze. Been that way for decades now.
Bronze wastes away over time as well.

That's why I stopped using metal nipples in most cases a long time ago.
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Old 10-08-2016, 11:21 AM   #106
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Larry, when you get a chance, please let us know how you made out with Matthew. Had my fingers crossed for you...
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Old 10-08-2016, 12:23 PM   #107
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About an ounce over a week showed up in the inboard forward corner, near the site tube. The tank had about 225 gallons in it. I emptied all but 50 and the leak stopped. Maybe a seam? I'll know more later this week.
Great project. I could do it too, but I won't be done until 2050

What you do in a day, takes me a month, and I'm only talking about taping plastic over the furniture

My leak in the port side fuel tank was in the seam, about a foot from the bottom on the forward inner seam. I think I have a picture. The steel plates had about an 1/8" gap between them inside. The seam had not been completely welded like it should have.

As we had discussed last year, we used an epoxy sealent inside the entire tank and int he process cut four large inspection plates.
All is well now.

The picture needs to be rotated to the left. That fitting that appears on the picture's bottom right, is actually the return inlet, so that is the inner, upper corner. Look at the weld seam connecting the forward plate and the inner plate. The areas that appear black are voids.
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Old 10-08-2016, 12:35 PM   #108
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Old 10-08-2016, 12:36 PM   #109
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Thanks Craig for just doing it
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Old 10-10-2016, 01:47 PM   #110
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Larry, when you get a chance, please let us know how you made out with Matthew. Had my fingers crossed for you...
Seconding Scott's request and thoughts. Hope you and Hobo weathered Matthew intact.
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Old 10-11-2016, 05:46 PM   #111
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Hobo came out of Matthew with nothing more than a good shower. I used duct tape to seal a couple of areas that we know don't like horizontal rain. We got extremely lucky when the front hit. The tide was ebbing so no storm surge. Losing some days on our schedule, reinstalling the old thru hulls and some storm prep was the only down side.

So back at it today. Since the tanks are 22" shorter than the originals, some things needed to get moved around. I cut out the platforms for the water heater, water lift, start batteries, water maker and autopilot pump. I cut back the original platforms for the house bank 4" for better engine access and glassed in new fronts. Today was spent grinding glass, grinding more glass and grinding more glass, trying to smooth out/prep the hull surfaces and remove the ridges from the the old platforms/glassed in tank attachment points. Tomorrow I'll repair some areas and grind again. Our plan is to get all the grinding/repair areas done by the end of the week. The rest of the platforms will wait till the tanks go in.

The dust, even with good vessel protect, is one giant PIA. If I could have found someone who I trusted and was available, this is one task I probably would have subbed out.
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Old 10-11-2016, 08:22 PM   #112
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Hang in there Larry . That is some tough work .
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Old 10-11-2016, 08:32 PM   #113
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Yikes. That looks like hot work.
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Old 10-11-2016, 11:18 PM   #114
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good god that makes me itch just looking at the pics!

great job!
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Old 10-12-2016, 12:21 AM   #115
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The dust, even with good vessel protect, is one giant PIA. If I could have found someone who I trusted and was available, this is one task I probably would have subbed out.
I've been saying that for as long as I've owned my boat. What little I was able to sub out I wished now I had done myself. Now when I find someone available, I'm suspicious why.
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Old 10-12-2016, 07:36 AM   #116
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Hang in there Larry . That is some tough work .
Thanks.
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Old 10-12-2016, 07:39 AM   #117
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Yikes. That looks like hot work.
It's a tough way to diet. I can pour water out of my gloves and squeeze almost a pint out of shirt in just an hour. Fortunately, Mathew knocked about 10 degrees off the temps.
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Old 10-12-2016, 07:40 AM   #118
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good god that makes me itch just looking at the pics!

great job!
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You find out pretty quick where the exposed skin is.
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Old 10-12-2016, 07:52 AM   #119
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...Now when I find someone available, I'm suspicious why.
Yup. That and I don't want someone learning on Hobo.
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Old 10-12-2016, 09:13 AM   #120
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Larry, that corroded pipe to hose adapter photo is a textbook example of dezincification (zinc corroding out of a zinc/copper alloy such as brass), evidenced by the pinkish hue, which is a weak porous copper structure that remains. Which means the part was in fact brass and not bronze. I see this so often it keep me up at night, to many builders and yards, and boat owners, unknowingly use brass pipe to hose adapters and pipe nipples (pipe threaded on both ends). Boats have been lost thanks to this type of corrosion, which is entirely a material selection issue.

It's tough to tell the difference between brass and bronze on the shelf, however, there is one unscientific method. Bronze parts tend to be cast, so they are rough, at least parts of them, while brass lends itself better to machining, so they are smooth all over. Brass tends to be more yellow, while bronze is more copper colored. As I said, hardly scientific, but until there's a field test for zinc content...
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