1982 Cordoba Stock Car.

he means nut under trunk nut inside trunk ..that bolts the stud in place..and then you add a 3rd nut to bolt the top plate onto the tank..the problem is..that most allthread is low torque before it snaps
 
Exactly, 69.5. Then the all-thread wouldn't spin if you needed to remove the fuel cell. Yes, most all-thread is Grade 2 and will snap pretty easily, but it'll take 30lbs/ft if it's 3/8" and that's more than enough to hold a fuel cell in place. Connecting rods seem to do just fine with not much more...
 
I'd just use weak threadlocker. It works better than a nylock and is readily available everywhere. Still, even that is safety overkill.
 
Got a bunch more done today, Here's what I've got pics of so far.

Went about boxing in my Steering box mount today. Turned out really good!

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Figured since I'm completely sealing this off I had better make damn sure those steering box weld nuts are good and stuck to the frame. :D

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Finished welding it all together and was wire brushing it off and found a crack! Good thing I'm boxing this in eh? :doh: :D

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All fixed! :dance:

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I can't believe they let you just bolt the cell through the floor likr that!!! That should be tied to the cage! We were required to cut the trunk floor out, make rear frame rails that tied to the care and drop the cell between the rails and bolt it in. I would weld tubing to the top of the frame rails for bolts to go through, then weld nuts into the ends of the 1" sq tubeing I used to make the cell frame. That way it was anchored firmly to the car and could easaly be removed by taking out 4 bolts and disconnecting a supply and vent line.
 
You can run a fuel tank from a bolt held to the trunk floor with two hole strapping.

That's what was in that Cougar until they got given a real fuel cell.


It's bolted to the trunk floor with 4 pieces of 1/4" all thread. :D
 
I think the worry is about what it's strapped TO rather than what is being used to strap it down.

It's sheet metal, and you just drilled 4 holes in it.
That, and the fact that there's nothing surrounding it but air, makes it seem like more should be done not only to secure it in place but to protect it from injury.

I'm not saying it's wrong. You've got the rule book. I don't.
I'm just thinking it's a little scary.
 
That's why I made that girdle to go under the trunk floor and I made sure that I went through the factory fuel tank supports.

You would have to tear the girdle and the factory tank supports through the trunk floor.

This is a fairly low speed car.

I feel safe.
 
Did some painting of the outside of the cage and the inside of the door skins and installed them.

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Tail panel installed, trunk and trunk pins installed.

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Additions added to fuel cell mounting.

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K-frame and rear leaf shackles finished.

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Window screen fabricated and half welded into place.

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Finished the window screen.

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Painted the back of the header panel.

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Welded up the diff.

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Made myself a pair of backlash adjusters. I just copied the one from work.

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Finished my leaf springs.

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