78 FJ40 Rear opening measurement

[droederer]

I looked thru the previous posts and have found several similar dimensions for the rear opening (the clearance opening of tub), similar distance from wheel well to wheel well. I have seen 40-7/8, 41, 41-1/8, and 41-1/4. Can I get some measurements off of some 78's to narrow this down?

 

[charliemeyer007]

I have a 72 wearing a 76 hard top so I can't help. But you should post a pic of the measurement you are looking for.

 

[droederer]

I looked thru the previous posts and have found several similar dimensions for the rear opening (the clearance opening of tub), similar distance from wheel well to wheel well. I have seen 40-7/8, 41, 41-1/8, and 41-1/4. Can I get some measurements off of some 78's to narrow this down?

 

[charliemeyer007]

Mine is 40 and 3/4 +- like 5 inches down from your arrow. Top of wheel well actually.

 

[bryce112]

Our 77’ is 40 7/8” right at the height of the top of the wheel well and 41 1/8” at the top.

 

[Living in the Past]

Measurement should be the same from the floor to the top of the tub. Ambulance doors are square so the tub should be the same. Wider at the top is because of sill rust or repaired and not squared when installed. Inside dimensions should same for ambulance and tailgate/barn doors.

Years ago I checked how a tailgate fit inside and ambulance door opening on a original 10/75 with 4,500 miles.

 

[droederer]

Measurement should be the same from the floor to the top of the tub. Ambulance doors are square so the tub should be the same. Wider at the top is because of sill rust or repaired and not squared when installed. Inside dimensions should same for ambulance and tailgate/barn doors.

Years ago I checked how a tailgate fit inside and ambulance door opening on a original 10/75 with 4,500 miles. View attachment 3906268

I understand. That's what I was assuming. I just can't determine the true dimension. As there are alot of variations on the actual opening

 

[Mr. Green]

I might have something let me dig in the photo archive…
Ok I suck at linking an old thread but I went with 41”. Below…

 

[Mr. Green]

@wimberosa I’ll take any measurements you’ve got. The more easily this info is reachable the more it helps the next 40 owner.

Below are additional dimensions I got including how I squared up and aligned my rear quarters before cutting the panel line.

Right side was aligned.
View attachment 3279009

Left side was garbage and needed help.
View attachment 3279010
View attachment 3279011

Brought it back in by cutting and rebracing while clamping and squaring it up. I hope I’m doing this right but if not, it’s still 1000 times better than before. (I tell myself that often)
View attachment 3279016

 

[Living in the Past]

Measured a couple of FSTs today. One a 1962, the other a 1973. Both just under 41". Maybe a 1/16". Just used a measuring tape. Both measures the same at the bottom, mid way up and at the top. Sides are parallel to each other.

 

[droederer]

Measured a couple of FSTs today. One a 1962, the other a 1973. Both just under 41". Maybe a 1/16". Just used a measuring tape. Both measures the same at the bottom, mid way up and at the top. Sides are parallel to each other.

 

[droederer]

Thanks everyone.

Looks like the number should be just under 41". The nearest whole mm under that is 1040mm (40.945"). This is what I think I will go with.

 

[vfrer]

I measured a new rear floor and mid bed panel (real steel) and they both were 40 7/8"

From this image it appears that the factory dimension is 1015mm which is more like 40" but as you found they are typically closer to 41".