Build 73 FJ40 Refresh

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Engineer8000 said:
The saga continues on the spare tire carrier hinges. I received the new hinges and cleaned them up. (Thanks @kevos37 !) A couple days in the electrolysis bucket then wire brushing, sanding and primer. I zinc plated the washers and ends of the hinge pins where the threads are.

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What I didn't notice at first is these are different designs. The one on the left is pointy and the one on the right is flat. I wonder which is correct for 73? I assembled the hinges and found the nut will not screw on one of the hinges far enough to fit the cotter pin. These are the nuts from vintage teq parts. At first I thought it was the hinges but started looking closer at the nuts.

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These nuts are slightly different, one is about 1mm taller from the bottom of the nut to the cotter pin slot. One fits, the other doesn't. Bummer. I see that m16x1.5 castle nuts are not that rare so I will find some new ones and report back. Don't buy the nuts from Vintage Teq Parts.

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I also did a side by side with the pre 72 hinges and see the early hinges indeed do clear the body by 1/4 inch or so. I know they may not look level in the picture but I did level both with a small bubble level.

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Here is a picture from my '73. Both bolts in the spare tire carrier have this same shape. You are do an amazing job on your truck. The attention to detail....first class. If you need any other pictures let me know.

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While NLA I show the US market jump seat, seats belts 7/71-1/75 the same. My 73 the threaded holes for seat belt are on the front wheel well where it angles down. The back threaded hole is a little over half the length of the jump seat. I find no other threaded holes for seat belts.

For the spare tire carrier anchor if your talking the reinforcement spotwelded to tub I never heard of anyone making them.
 
Living in the Past said:
While NLA I show the US market jump seat, seats belts 7/71-1/75 the same. My 73 the threaded holes for seat belt are on the front wheel well where it angles down. The back threaded hole is a little over half the length of the jump seat. I find no other threaded holes for seat belts.

For the spare tire carrier anchor if your talking the reinforcement spotwelded to tub I never heard of anyone making them.
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Hole placement is the same for mine. Beware the threads were imperial on mine not metric.
 
Thanks for the replies, I have read they are 7/16 possibly. Those are the locations I have as well. I have the old plates on the pieces that were cut out, I thought it may be easier to start with new, if possible, rather than harvesting the old ones and cleaning them up.
 

FJ40Savvy said:
Hole placement is the same for mine. Beware the threads were imperial on mine not metric.
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I believe the Toyota bolts were M11x1.25, which are almost identical to UNF 7/16-20. Standards for class 2A/2B threads allow for looser fit, particularly over short thread engagements.

Others have pointed out that M11x1.25 bolts are not common, it's likely to be a specific trade-off for offshore manufacturers to comply with US NHTSA standards. Since they are interchangeable, it's likely most restorers just use the commonly available UNF 7/16-20.

7/16 - 20 = 20 threads per inch, 7/16 = 0.4375, 0.4375 x 25.4 = 11.1125mm.

11.1125/11 = 1% difference in diameter.

M11 x 1.25 = one thread per 1.25mm

25.4mm per 1 inch

25.4/1.25 = 20.32 threads per inch

20.32/20 = 1.6% difference in thread pitch..

  1. CHAPTER V—NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
  2. PART 571—FEDERAL MOTOR VEHICLE SAFETY STANDARDS
  3. Subpart B—Federal Motor Vehicle Safety Standards
  4. § 571.209 Standard No. 209; Seat belt assemblies.
(f) Attachment hardware. A seat belt assembly shall include all hardware necessary for installation in a motor vehicle in accordance with SAE Recommended Practice J800c (1973) (incorporated by reference, see § 571.5). However, seat belt assemblies designed for installation in motor vehicles equipped with seat belt assembly anchorages that do not require anchorage nuts, plates, or washers, need not have such hardware, but shall have 7/16-20 UNF-2A or 1/2-13 UNC-2A attachment bolts or equivalent metric hardware.
 
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I got the tub strapped to my new dolly. Now I can get to work on it. This is a truck bed dolly rated for 1200 lb, plenty sturdy for a fj40 tub. I want to fit the gas tank, tunnel cover and seats to be sure the holes are correct in the new front floors before I do much else.

My jump seat upholster has ghosted me so now I have to go figure that out.

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I got my jump seat covers from Cruiser Corps. I sent them the material to match my front seat and they made a custom set for me. Turned out great at a very reasonable price, if I remember it was $50 added to their standard covers. The local upholstery places here were asking 4x the price
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