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Old 18 September 2012, 18:28   #21
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[QUOTE="Bigtalljv"]I talked to somebody at Zodiac and they didn't think the mounts were structural. they did suggest, as Troy did, that they would like to watch me get them out. Currently they install them with enough epoxy to make removal virtually impossible. fortunately mine was not made in such a fashion, they popped out with a couple gentle taps from the BIG sledgehammer. /QUOTE]

Nice to see another inboard to outboard conversion and I'm really interested in the result!
The mounts may give some transversal stiffening (only advantage how i see it)but unlike in my boat the mounts seem to be rather space consuming and indeed not glued to the boat plus also not a good base for the new floor you are likely to put in...
Not sure if you considered it already but if you would be able to find yourself some nice alu hatches, the space under the floor makes excellent storage . Never regretted converting it to this purpose and doing the investment in the (freeman) hatches (found via this forum by the way)
Good luck and looking forward to some more pics and follow your progress!
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Old 18 September 2012, 18:58   #22
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So this is what they look like out. They are big an bulky and they didn't let the water drain completely.

I was definitely planning some hatches behind the console. There is a mountain of space under there. I am considering modifying the center console to open like the commercial 733 on here, that has a toilet, but just use it for storage.
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Old 19 September 2012, 21:31   #23
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Balance is key on this boat, or any rib for that matter. When you move the center of gravity as much as you are you need to take that into account with all your mods. Every gallon of gas will weight 7lb and you are removing the engine, transmission and drive, all of which had substantial weight, then you are moving engines aft of the transom. A dangerous trick on a rib that relies so much on its design COG given its already delicate balance. Look around at other build and even ask Willard for a spec/drawing of their 730OB for inspiration and guidance.
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Old 10 October 2012, 21:52   #24
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So how does the stock fuel tank come out? Either I need to get the hoses off or the piece of deck above them.
So, how hard was it to get the tank out?

I figured that I'd ask here before calling around:
(1) will anyplace weld expand the existing tank? I've heard conflicting reports on welding on a old tank...obviously it would have to be well cleaned first
(2) how much do new/custom tanks cost?

(I'd love some more range but am not willing to pay that much for it...20 gallons extra in 4 cans fits perfectly in the back on either side of my storage box and at $15/each, that's only $60 spent!!!)
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Old 10 October 2012, 22:10   #25
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it turned out to be real easy to get out. you just have to remove the line fittings that screw into the tank. Access to the fittings is kind of a challenge, I found the little crowfoot wrenches to work well. Once you remove the fittings the tank has no protrusions and pulls right out.

It's dark out but that's what that part of the tank looks like.

I'm not sure what size tank you have now but there appears to be room for close to the 85 gallons the new boats have. You'd have to have it custom made but I understand that it would be a heck of a lot cheaper than trying to get the plastic Zodiac tank. I think I read somewhere that 2.5X the cost of the fuel the tank holds is a good ball park for custom tank costs. Of course that could have from 10 years ago.

Jason
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Old 11 October 2012, 13:59   #26
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it turned out to be real easy to get out. you just have to remove the line fittings that screw into the tank. Access to the fittings is kind of a challenge, I found the little crowfoot wrenches to work well. Once you remove the fittings the tank has no protrusions and pulls right out.

It's dark out but that's what that part of the tank looks like.

I'm not sure what size tank you have now but there appears to be room for close to the 85 gallons the new boats have. You'd have to have it custom made but I understand that it would be a heck of a lot cheaper than trying to get the plastic Zodiac tank. I think I read somewhere that 2.5X the cost of the fuel the tank holds is a good ball park for custom tank costs. Of course that could have from 10 years ago.

Jason
I had some time to read this morning when I got into work. People estimate $8-9/gallon for what I assume is aluminum.

If I had to wager a guess, I would have said our (Willard/Zodiac diesel) tanks were stainless but then read this in an article:

"The [ABYC] diesel fuel system standard was reissued in 2005. Now, stainless steel may be used for fuel tanks, provided the metal meets all other relevant ABYC requirements, essentially those outlined earlier for other metallic tank materials. Stainless steel, if used for fuel tank construction, must be of the 316L or 317L alloy variety and a minimum of 0.0747 inch thick."

Since, our tanks were made <2005, they're aluminum and not stainless??? (not anywhere near my boat, I haven't looked real closely).
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Old 11 October 2012, 18:08   #27
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most definitely Aluminum. Stainless seems like overkill and I am usually all for overkill...

I think I read somewhere that you can put fittings in the bottom of diesel tanks but not gasoline. In theory you could add some fittings and daisy chain a couple diesel tanks together via gravity. Or something like that. Seems more difficult and complex now that I write it down than having a new tank made.

Jason
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Old 11 October 2012, 20:07   #28
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Most definitely Aluminum.
Thanks, adding "increase fuel tank size" to my future list of "to dos". I'll need to figure out if there's someone out there that will add some height to the existing one or it will have to be a new fabrication and whether $$$-wise it will be worth it.

We need more pictures and an update from you! Glasses in the transom yet? Started fabricating the aluminum bracket?
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Old 11 October 2012, 21:21   #29
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well lest see, for all the work i have put in I don't seem to have done much. I have mostly been working on the tubes. I "think" I have all the holes patched but I am pretty sure I have a bad valve.

I have the plug in the transom and it is ready for glass. That will be something for the next warm weekend day.

I also removed the engine mounts. Lots of work but nothing exciting to see.

My fabricator friend is kind of busy so hopefully in the dead of winter we can find some time to work on the bracket.

Jason
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Old 12 October 2012, 13:10   #30
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well lest see, for all the work i have put in I don't seem to have done much. I have mostly been working on the tubes. I "think" I have all the holes patched but I am pretty sure I have a bad valve.

I have the plug in the transom and it is ready for glass. That will be something for the next warm weekend day.

I also removed the engine mounts. Lots of work but nothing exciting to see.

My fabricator friend is kind of busy so hopefully in the dead of winter we can find some time to work on the bracket.

Jason
Lookin' goood
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