A ton of progress on preparing the rear sill today!
As I mentioned before, I got this sill kit from Cool Cruisers of Texas, and in general I’m pretty happy with it.
As with many things in early FJ40s, these aftermarket components aren’t generally plug and play for the whole range of years they may indicate.
I have a factory soft top model, with a drop-down tailgate, in a transitional year. I already knew I was going to have to drill some holes to make the sill kit work for me, but didn’t realize that the drop-down tailgate changed the vertical position of the lower tire carrier latch — by something like 10mm.
If kept those holes in the same place, the latch would interfere with my tailgate hinges. So, step one was to drill out the threaded bits they pre-installed in the sill.
Next, I had to determine if there were any other holes that need to be filled, so I started making a template off of my previous sill cover. I quickly realized that a few of my holes were elongated and giving me funky measurements. To do this right I would need to determine what the factory positions actually were. I vaguely recalled seeing a diagram somewhere on Mud years ago, but felt like I had enough information to get myself going.
Here’s my first draft.
My second draft went a lot better once I realized the vertical distance apart each set of holes was supposed to be (20mm on center) and the distance from the bottom edge to the bottom hole (14mm on center).
The middle hinge is my reference mark for the whole sill, and the center of your other hinge measurements should be exactly 42.5cm out to each side from this center point. Then, there is the hole for the license plate lamp. That sits 16.5cm in from the outside hinge, and up 30mm (on center). Its radius appears to be 10.5mm.
At this point I clamped things up to see how it was all looking and started to figure out where the tire carrier latch needed to sit.
From what I could tell on my old parts, the latch sits about 36mm in from the hinge to its right. The vertical hole configuration is the same as the hinges.
Okay! So, my template was done and I placed it over the new sill cover and marked which holes would need to be filled. 6 on the sill cover, and 4 on the sill itself.
Then, I fired up the welder and got to work. Fill, air gun to cool it down, grinder to cut down most of the weld, and then finished with the small air grinder to smooth it out. It’s not perfect, but I think it will work well.
Lastly, I placed my template over the sill cover, aligned my center hinge line to my center mark, and used an automatic center punch to strike each spot where I’ll be drilling. For now I only drilled small holes in each position on the sill cover but not the sill itself. For that, I’m going to wait until it’s tacked up in the truck.
Until the next update…
-Seth