1964-1970 Mustang Member Tech & Restoration Discussion

FAQ: Modern 3 point seat belts

Old Aug 30, 2004 | 08:25 AM
  #1  
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There are more than a few ways to skin this cat. Where to mount them, where to get the belts from, do you need reinforcement in the roof of an early hard top?

I personally have heard contrasting info, and it'd be nice to clear this one up.

For instance, this website details an extensive beefing-up of the roof panels: http://www.geocities.com/MotorCity/S.../seatbelt.html

But I read an article in one of the Mustang mags (last month's M&F I believe) that neglected to mention this at all.
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Old Aug 30, 2004 | 08:31 AM
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Hi Blake,
I have a '66 fb and I'm interested in hearing from anyone who put a 3 point in and NOT use the roof. I'd prefer to anchor it right below and forward of the vents so the belt would be slightly below the occupants shoulders. A cleaner look, too.
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Old Aug 30, 2004 | 09:07 AM
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I have not done it yet but plan to so I've collected some information that I will pass along.

First, some websites I've found that outline the process.

http://www.joesfalcon.com/sped2/shharnes.html

http://www.mustangandfordparts.com/projects/seatbelts/

http://www.rileysdm.com/mustang/albu...ls.php?album=6

http://www.midnightdsigns.com/james/3PointBelt.html


Second, sources for NEW seatbelts.

http://www.andoauto.com/retrofit.htm

http://161.58.79.191/cgi-bin/SoftCart.exe/...t.asp?E+scstore

http://stores.ebay.com/Fatrodders-Rod-Part...genameZl2QQtZkm

Since the belts are pretty much going to be a universal type thing anyway, it might be cheaper to research some of the Street Rod vendors for some in the correct length instead of buying them from a Mustang vendor. It depends on how much work you want to do yourself to save a buck or 2.
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Old Jan 13, 2005 | 10:02 AM
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Does anyone know the length needed for the 3 point belts?

Which mounting point do you think is better, roof or door jamb, and why?
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Old Jan 13, 2005 | 10:52 AM
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Originally posted by jpony645@January 13, 2005, 11:05 AM
Does anyone know the length needed for the 3 point belts?

Which mounting point do you think is better, roof or door jamb, and why?
Are you asking about the length of the buckle end with the plastic sleeve? Thats pretty much up to the user. I put in non-sleeved ends in my 67 Falco (w/buckets from a 66 Mustang ). I dont remember the length for sure, but I'm betting I put in 8 or 10 inchers from andoauto.

I used the roof mount postion because it was available, and its a 4 door.
On our 87 GT vert of course uses the rear quarter trim area (door jamb area). Kids are always having to climb over those stinkers to get in and out. Kind of a tripping hazard for the rear occupants... .

If I was putting them into a coupe, I'd use the roof. Back seat occupants wouldn't be tripping face first into the asphalt. Plus, I'm use to newer cars having the shoulder harness up high off my nape.... :shock:

just my pennies worth
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Old Jan 13, 2005 | 11:19 AM
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I was thinking that ordering had a length requirement but now I see it doesn't. CRS kicking in.....

I did find this on the Andover website......
The shoulder harness mounting anchor brackets are available with either a 2 1/2" or 8 1/2" bracket offset.The offset selected should be based on the distance between the harness mounting point and the seated occupant.
I'm assuming this will be dependant on how far back the belt is mounted on the roof point? (ie further back would require the 8 1/2" bracket)
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Old Jan 13, 2005 | 11:44 AM
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Originally posted by jpony645@January 13, 2005, 12:22 PM
I was thinking that ordering had a length requirement but now I see it doesn't. CRS kicking in.....

I did find this on the Andover website......
The shoulder harness mounting anchor brackets are available with either a 2 1/2" or 8 1/2" bracket offset.The offset selected should be based on the distance between the harness mounting point and the seated occupant.
I'm assuming this will be dependant on how far back the belt is mounted on the roof point? (ie further back would require the 8 1/2" bracket)
The offset length is the distance between the mounting tab (bolt hole) on the harness and the chrome ring where the webbing (belt fabric) doubles back down towards the reel end. Yes, the 8 1/2 " offset could be used for roof mount because it drops the loop and buckle end/pivot point .

pic
just below "on-line order form (edit: 1/2 way down the page)
" Shoulder harness sets includes an installed extension that lowers the point where the webbing feeds thru 8 1/2" from the upper shoulder harness mounting point to add to the ease of installation.A shorter 2 1/2" guide is also available if required."

:w00t:
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Old Jan 13, 2005 | 01:33 PM
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Old Jan 14, 2005 | 09:52 PM
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get a rollbar and this wont be an issue
________
Group Sex live

Last edited by LMan; Aug 20, 2011 at 09:10 AM.
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Old Jan 16, 2005 | 10:30 AM
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I actually thought about that but I'm not sure I'd like 4points for an everday driver.
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Old Jan 16, 2005 | 06:33 PM
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i will eventually be adding a 2 point roll bar like a shelby and tieing it into the factory roof seatbelt mounts and using a 4 point shelby style harness. it won't have the added safety of the extra two down bars, but it will primarily a street car so i'm not too concerned about it.
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