Does anyone know what the bolt size is on the side of the factor roll bar on a 85 toyota 4runner. I'm making a half soft top for my runner and i want to mount some suport bars for the half top.

Do you mean the bolt that supports the top of the seatbelt? I'm pretty sure they're 7/16 UNF x 2.5" bolts.

Won't be a 7/16 UNF as all bolts on a Toyota are metric. Dont know metric size but the thread will look similar to a UNF. It will probably be a 8mm. Everybody confuses metric bolts with UNF (national fine).

Actually it may be the one exception since seatbelt legislation of the era was mainly a U.S. thing. Pretty sure another thread on here mentioned it being a non-metric thread as well.

That is correct. It's not metric. Drive's me nuts every time I remove the ones I have in there.
I don't know what the bolt shaft size is, but it's a 5/8" head. I don't know what the thread pitch is, but it's damn close to 1.25mm, as an M10 1.25 (***** 14mm head bolt) will thread into it ok but is too loose to hold. That should be enough info to work backwards on...
Same bolt holding the rear lap belts in place too. only an option on American versions, so were re-rooled just for here. How annoying.

On this note (not to hijack) I'd actually prefer to have shoulder belts for the rear but never actually seen any. Does anybody carry these?

It is 7/16, and you can order the shoulder belts thru the dealer (at least you could a year or so ago), they came stock on Canadian models.

My local dealer told me that the rear shoulder belts were not available anymore. I bought a set a few years back and they were $150. Someone here on this board (I think) posted details of how to use some standard toy belts to do the same job. Anyone remember that?

You can use the front belts from any truck or 4Runner or Rear belts from an Isuzu Trooper-$20 at the PNP...



Just realize that if you use the front belts, they will be long and will not retract all the way.

These belts have been in for 3 years and my kids/passengers are happy with them. No more snug/locking anoying lap belts.

My guess on a 7/16 unf thread was a pretty well educated one. My old job was doing Australian compliance modifications to japanese imports. This included replacing seatbelts in EVERY car with new ones. It is law that any retractable inertia seatbelt be mounted with a 7/16 unf bolt. Just as a useless tidbit you'll probably find that the child restraint anchorages are imperial thread too (5/16 UNC).

The 1988 Hilux surfs (4runners) we used to import from japan had NO rollcage in them at all. We had to fit them. The japanese don't really seem to care about their own safety when building JDM vehicles.

Not on any of the Canadian models I've seen around. They were an option up here as well until 90 when they changed the body style.