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Rear seat belt install

scottbr997

Jr. Member
Joined
Dec 13, 2010
Messages
106
Loc.
Bend, OR
There are no factory holes. There are 4 pre drill areas in the correct location as seen in pic.

If I drill these, would I need to remove fuel tank to bolt up or weld nuts in place?

Is there another option?

Kinda weird that they weren't drilled from factory since it did come with rear seat.

Thanks.
 

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Tahoedawg

New Member
Joined
Oct 23, 2013
Messages
48
Loc.
Eugene
I have a 77 and the seat belt bolt holes are threaded...before you start drilling make sure that your bolt holes aren't already threaded.
 

lonesouth

Contributor
Bronco Guru
Joined
Dec 18, 2003
Messages
5,045
If they are not threaded, you will need to drop the tank to get access to the backside. Alternatively, you could install some nutserts designed for seat belts, they do exist.
 

67RT

Bronco Guru
Joined
Jan 17, 2014
Messages
1,308
Make sure it is a reinforced area and not just in the floor sheet metal. Nuts will pull through in high impact situation.. Not sure how to best modify the floor to add seatbelt holes. Any safety engineers on board?
 

lonesouth

Contributor
Bronco Guru
Joined
Dec 18, 2003
Messages
5,045
I used large thick fender washers backed with a grade 8 washer and lock washer when I installed my rear seats. I expect a 2x2 piece of 1/4 or 3/16 flat stock would be sufficient as a backing plate.
 
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scottbr997

scottbr997

Jr. Member
Joined
Dec 13, 2010
Messages
106
Loc.
Bend, OR
Thanks for the input. Further investigation revealed only the 4 dimple areas. No holes. I'll need to drop the tank and come up with a structural piece to secure bolts. Doesn't seem like there is much clearance when tank is installed.

Wish I'd looked into this before I installed my new tank...At least the R&R will be easier. Cheers.
 

bronco t

Contributor
Sr. Member
Joined
Jun 28, 2010
Messages
781
Loc.
San Diego CA
I converted my stock seat to a used Jeep folding seat and fabbed an h-frame that utilized the stock holes. I would bet that you could build a similar setup for the stock seat that could tie into either the side of the fender well or outside the frame. This way you could get to the bolts with out dropping the tank. As you can see by the pic I screwed the eye bolts for the Crow seat belts into the stock holes as well. Just a thought.
 

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Ol'Blue

Contributor
Bronco Guru
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May 28, 2013
Messages
1,823
You may want to double/triple check for the threaded inserts. Maybe they are there but they never popped the holes in the bed or they had been filled.

The outer most seat belt anchors are just above and inside of the shock mounts. Here is a pic of the one that is easy to see on the passener side just to the left of the shock mount. The anchor is about 1"x1".

If they are there, you may be able to just drill through the bed while being careful and not go too far and hit the tank.

Oh and if you have a body lift you may be able to sneak and anchor in there somehow. Good luck.
 

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scottbr997

scottbr997

Jr. Member
Joined
Dec 13, 2010
Messages
106
Loc.
Bend, OR
I checked the driver and passenger outer mounts from underneath, as in pic, and I have nothing. Just smooth, bed sheet metal.
 

Ol'Blue

Contributor
Bronco Guru
Joined
May 28, 2013
Messages
1,823
I checked the driver and passenger outer mounts from underneath, as in pic, and I have nothing. Just smooth, bed sheet metal.

Bummer, well it was worth a shot. Post some pics when you get them installed. Good luck.
 

bronconut73

Bronco Guru
Joined
Aug 7, 2012
Messages
9,917
I though I had nothing there too.
Turned out I was looking in the wrong spot under the eb floor.
I used an awl to pop out the little dimpled thingy over them and still thought I had nothing.
I kept cleaning them out and then saw the threads. My threaded little things were actually slightly off set of the holes in the bed floor sheet metal. That made it tough to start the bolts but I eventually got them to start.
Seems weird that you have the dimples but not the threads. These eb's can be weird sometimes though.
 
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