SoCal Jet Boats

Tech Talk => Gelcoat / Paint / Fireberglass Repair => Topic started by: bahner80 on January 25, 2016, 07:33:13 PM

Title: Fuel tank mounting j ole
Post by: bahner80 on January 25, 2016, 07:33:13 PM
I gotta fill these holes that  I've put a bandaid on for too many summers.  Same tanks going back in while.the fuel tanks get bungs welded.what should I use to fill them and mount tanks back n in same location? All is appreciated thanx.
Title: Re: Fuel tank mounting j ole
Post by: GT Jets on January 25, 2016, 07:35:55 PM
Is there wood in there?
Title: Re: Fuel tank mounting j ole
Post by: bahner80 on January 25, 2016, 07:41:25 PM
Yes back transom has wood just been
Title: Re: Fuel tank mounting j ole
Post by: bahner80 on January 25, 2016, 07:42:24 PM
Screws been vibrated loose too many times
Title: Re: Fuel tank mounting j ole
Post by: GT Jets on January 25, 2016, 07:57:02 PM
This will say a lot about me and how I do stuff.

Grab a forstner bit (like 1/2") and drill the wood out to the outer glass.

Once that's done,  fill the holes with Marine Tex. Make it as smooth as you can while wet,  that stuff is hard as hell.

Once that's done,  set the tanks back in and mark the holes of the tank brackets.

Now drill and tap those for 1/4x20 machine screws, you will need a bottoming tap. They cost about $6.

Use some short stainless bolts and fender washers and go have fun.

This is bulletproof.

GT
Title: Re: Fuel tank mounting j ole
Post by: bahner80 on January 25, 2016, 10:11:26 PM
Forster bit?  Nev r heard of one. And the marine tex, is that like an epoxy?I was gonna put a piece of a small wood dowel rod but I like this much better thanx for the info sounds like a fix that will last some time
Title: Re: Fuel tank mounting j ole
Post by: GT Jets on January 25, 2016, 10:16:59 PM
Damn phone is outsmarting me.

I'll get you a link for a bit.

Better yet,  go to Amazon and simply type "Forstner bit set" I bought a Porter Cable set for under $50. They drill a hole with no taper,  completely flat.


And yes,  Marine Tex is a high solids epoxy. It is silly strong.  It can be milled and machined similarly to aluminum. It comes in charcoal grey and white.

Wood sucks. If you decide to go that  route,  use ash Dowling.

Good luck.
Title: Re: Fuel tank mounting j ole
Post by: bahner80 on January 26, 2016, 05:42:00 AM
Thanks  man  I'll get the materials and get started on this
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