SoCal Jet Boats

Tech Talk => Gelcoat / Paint / Fireberglass Repair => Topic started by: mrben157 on April 26, 2018, 03:10:29 PM

Title: Mounting fuel tanks
Post by: mrben157 on April 26, 2018, 03:10:29 PM: So I pulled my two fuel tanks after going through several inline filters and still getting crap. Tanks were held in by some kind of spray foam almost like "Great stuff" foam. I'm thinking someone did this as a quick fix? Or is there some kind of product designed for mounting fuel tanks this way? The tanks are rectangle galvanized steel and I can see where it looks like they used to be secured with fiberglass on the front and towards the back on the bottom.
What would be the best way to reinstall these? Should I fiberglass them in or build some kind of a mount / strap?

Thanks
Title: Re: Mounting fuel tanks
Post by: bobjthomson on April 26, 2018, 03:49:07 PM: Build a mount and glass them in , that’s what I did

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Title: Re: Mounting fuel tanks
Post by: bobjthomson on April 26, 2018, 03:49:43 PM: Sent from my iPhone using SoCal Jet Boats mobile app (http://r.tapatalk.com/byo?rid=201)
Title: Re: Mounting fuel tanks
Post by: mrben157 on April 26, 2018, 07:02:23 PM: My tanks don't have brackets or bolt holes or anything to mount them. I would had to strap it somehow or wrap it with fiberglass?
Title: Re: Mounting fuel tanks
Post by: goin_up_river771 on April 26, 2018, 09:40:47 PM: Weld some tabs to them then glass over the tabs. That’s how my old rectangle ones were done. Worked great

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Title: Re: Mounting fuel tanks
Post by: mrben157 on April 27, 2018, 05:41:08 AM: Little bit worried to weld tabs on since the tank is so thin. But ill give it a shot.
Title: Re: Mounting fuel tanks
Post by: mrben157 on April 28, 2018, 01:30:12 PM: So i'm planning to put bracket on the tank and mount it to plywood glasses in at both ends like bobs.
This is the first time for me working with fiberglass so any tips or best product recommendations let me know. Or if there is a good thread or tutorial out there please share.
Title: Re: Mounting fuel tanks
Post by: bobjthomson on April 28, 2018, 08:18:31 PM: Resin ur wood first , let it set and repeat, when dry set up ur mounts and lay resin down and let it get tacky and lay ur glass down and use a roller , more resin and repeat till u have at least 4-5 lay downs

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Title: Re: Mounting fuel tanks
Post by: JordanDangerfield on April 29, 2018, 10:02:27 AM: Here’s how I did the tanks in my old Eliminator.
Title: Re: Mounting fuel tanks
Post by: JordanDangerfield on April 29, 2018, 01:21:08 PM: I did the same thing on my old Rogers too.
Title: Re: Mounting fuel tanks
Post by: mrben157 on April 30, 2018, 10:58:38 AM: Did you guys just glass them across the bottom or the sides too?
How should I go about removing the old fiberglass that attach to the tank?
Should I grind it out or can I put heat on it and peel it up?
Title: Mounting fuel tanks
Post by: JordanDangerfield on April 30, 2018, 01:34:30 PM: Pick up one of these oscillating tools. They are perfect for cutting fiberglass. I used one to cut the fiberglass tanks out of the Rogers.

https://m.harborfreight.com/power-tools/oscillating-tools/variable-speed-oscillating-multi-tool-63111.html

I glassed the tanks on the sides as well.

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Title: Re: Mounting fuel tanks
Post by: JordanDangerfield on April 30, 2018, 01:35:08 PM: ...
Title: Re: Mounting fuel tanks
Post by: mrben157 on April 30, 2018, 03:11:09 PM: I have the tanks out but you can still see where the overlay was. Is there an easy way to get this off or should I just grind it off?
Title: Re: Mounting fuel tanks
Post by: mrben157 on April 30, 2018, 05:15:32 PM: Another question. Do I apply resin to the existing fiberglass and tank and then install the mat or do i do a dry layup?
Title: Re: Mounting fuel tanks
Post by: JordanDangerfield on April 30, 2018, 06:53:52 PM: Quote from: mrben157 on April 30, 2018, 03:11:09 PM
I have the tanks out but you can still see where the overlay was. Is there an easy way to get this off or should I just grind it off?

You can trim that down with the oscillating tool and sand the rest. You might be able to pull some of that piece up with a flat head screw driver if you can get underneath it. That way you don’t have to sand as much.
Title: Re: Mounting fuel tanks
Post by: JordanDangerfield on April 30, 2018, 06:55:51 PM: Quote from: mrben157 on April 30, 2018, 05:15:32 PM
Another question. Do I apply resin to the existing fiberglass and tank and then install the mat or do i do a dry layup?

Apply some resin, put the layer of mat or cloth down, then resin over the top of it. Make sure you have a roller to get all the air bubbles out. I’ll see if I have any more progress shots.
Title: Re: Mounting fuel tanks
Post by: goin_up_river771 on May 03, 2018, 09:09:43 PM: Quote from: JordanDangerfield on April 30, 2018, 01:34:30 PM
Pick up one of these oscillating tools. They are perfect for cutting fiberglass. I used one to cut the fiberglass tanks out of the Rogers.

https://m.harborfreight.com/power-tools/oscillating-tools/variable-speed-oscillating-multi-tool-63111.html

I glassed the tanks on the sides as well.

That tool is the shit careful sanding down the glass on the tanks so that you don’t make the tanks any thinner than they already are

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