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09-10-2020, 09:55 PM | #1 |
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seat belt installation 40 Merc
I'm planning to put seat belts in my 40 Merc convert sedan. what manufacturer of belts should I use? Where do I drill; drill between the frame in a clear space? Same for back seats? I haven't done this in years.
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09-11-2020, 06:56 AM | #2 |
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Re: seat belt installation 40 Merc
There are many 2 point lap belt kits available that mount with a large washer under the floor sheet metal.
SUCH AS THIS---------- https://www.ebay.com/itm/2-72-Univer...kAAOSw91JcLmJW HOW TO MOUNT, SEE THIS---------- https://www.wescoperformance.com/lap-belts-install.html
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09-11-2020, 07:43 AM | #3 |
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Re: seat belt installation 40 Merc
Check with Juliano's. 1-800-300-1932 or www.julianos.com
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09-11-2020, 09:00 AM | #4 |
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Re: seat belt installation 40 Merc
I used the 3 inch wide seat belts because I figured the wider the webbing the better. Plus it's easier on your body. Use a piece of rope to ascertain the length you need,taking into consideration different girth of passengers and what length is best when seat is all the way back. Duct tape the rope in place to find out what length you need.
I drilled my holes in the floor pan in an open space behind the seat with the front seats all the way back. You don't want to drill into the frame , muffler, etc. DO NOT ATTACH SEAT BELTS TO CAR FRAME. Buy from a company that supplies the mounting hardware. I found it best to use longer belts as you can always adjust them shorter. Here's one company: There are others. https://www.wescoperformance.com/3inlapsebewi.html Last edited by 19Fordy; 09-11-2020 at 09:08 AM. |
09-11-2020, 09:06 AM | #5 |
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Re: seat belt installation 40 Merc
as 40 said get a longer belt than you think to allow for expansion in future.(girth)
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09-12-2020, 09:18 AM | #6 |
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Re: seat belt installation 40 Merc
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We both like the more secure feeling and "anchoring" in the seat. I bought 90° brackets for the anchors and large fender washers underneath the floor. Glenn |
09-12-2020, 09:38 AM | #7 |
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Re: seat belt installation 40 Merc
What keeps the belt from hanging down outside the driver door when not is use?
Thanks all Clem |
09-12-2020, 11:36 AM | #8 |
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Re: seat belt installation 40 Merc
Clem, What you do is keep the "door side" of the belt short so that when it is buckled , the buckle is more towards the door and not resting on your stomach.
The buckle end of the belt rests on the center area of the seat and is adjusted as needed. The outer door side remains adjusted "short enough" so it won't fall out the door. That's why you want long belts. |
09-12-2020, 11:56 AM | #9 |
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Re: seat belt installation 40 Merc
Juliano's sells seat belt retractors that you can put on to keep the belts out of the doors.
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09-13-2020, 05:56 AM | #10 |
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Re: seat belt installation 40 Merc
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09-13-2020, 06:08 AM | #11 |
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Re: seat belt installation 40 Merc
Looking to put seat belts in my 48, read where it was said don’t bolt through frame. My seat is bolted through frame , what difference would it make for belts? Thanks
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09-13-2020, 08:53 AM | #12 |
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Re: seat belt installation 40 Merc
flathead48: Here's why you don't boly seat belts to the frame.
https://www.jalopyjournal.com/forum/...hem-to.102927/ Also, notice that car manufacturers DO NOT bolt seat belts to the frame. They have done testing and found whats best. |
09-13-2020, 03:31 PM | #13 |
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Re: seat belt installation 40 Merc
19forty, but my seat is bolted to the frame, I see no practical way to change what Ford built I understand about body leaving the frame but where does the seat go. Where is the seat in your 40 bolted to? Thanks for info. I do appreciate the members of this site and all the help they try to give. Good health
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09-13-2020, 04:04 PM | #14 |
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Re: seat belt installation 40 Merc
flathead 48:
My stock 40 seat is bolted to cage nuts on the underside of the floor. There are two 5/16-24 bolts on each "rail" of the bench seat. Bolts appear to be Grade 5 as they are easy to cut with a file. I am assuming back in 1940 Henry Ford did what was cheapest to do. You figure, seat belts didn't arrive until 1960's. Check out the load strength of Grade 5 5/16 bolts. https://www.google.com/search?q=5%2F...hrome&ie=UTF-8 It takes thousands of pounds of tension to pull a bolt from its threads. In fact, I have read that Henry Ford used lots of Grade 5 bolts in areas where car folks use Grade 8 bolts so that they would actually stretch rather than snap off. I bet Henry's seat to floor bolts were Grade 5. Plus, it's cheaper. If your seat belts came from the factory bolted to the frame, some engineer thought it was a good idea at the time. But, times change. Last edited by 19Fordy; 09-13-2020 at 04:10 PM. |
09-13-2020, 06:37 PM | #15 |
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Re: seat belt installation 40 Merc
No seat belts came in a 48 floor but as I stated, the seat is bolted to the frame. Thanks for your patiences and sharing your knowledge.
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09-13-2020, 07:26 PM | #16 |
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Re: seat belt installation 40 Merc
I do not know how the 48 seats are bolted in, but the years I am familiar with do not have the seats bolted to the frame.
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09-13-2020, 08:16 PM | #17 |
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Re: seat belt installation 40 Merc
JSeery, my 48 has a flat piece of hardwood screwed to the bottom side of the body, right where the body sits on the frame. The seat is bolted through the floor the wood and to the frame. The wood takes up the space so the body doesn’t bend. I would image all 46-48 Fords and Mercury’s are set up this way. This is right from the factory.
Thanks. |
09-14-2020, 06:12 AM | #18 |
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Re: seat belt installation 40 Merc
As other have posted, there are several seat belt suppliers. I bought mine from Seat-belts Plus. I installed them in my '46 Super Deluxe Coupe using 1/8x2x2 steel backing plates under the floor pan. SB+ sells mounting hardware. I removed the front, rear seats and flooring. The biggest part of the job was measuring and selecting hole locations. I didn't go to the frame. The front seat belt clips line up with the seat in the rearmost position. I only installed two sets front and rear.
https://www.seatbeltsplus.com/?gclid...SAAEgLSgfD_BwE |
09-14-2020, 10:11 AM | #19 |
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Re: seat belt installation 40 Merc
51 woodie, where is your seat bolted to ?
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09-14-2020, 06:43 PM | #20 |
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Re: seat belt installation 40 Merc
Flathead. The seat in my '46 Coupe is bolted through the floor pan into the frame rail, with bolts 24469-S, nuts 34445-S and washers 351383-S. There is a +/- 3/8" shim (unknown material) between the floor pan and the frame rail.
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