Originally Posted by BrianW
They are basically the same type of latches as the pop-out rear windows, right? In cargo vans with the rear pop-outs, but no plastic trim, Ford installed a black plastic spacer with the latch to make up the space.
They are 100% the same latches as used on the rear movable glass however their mounting scheme is very different. Rear doors used a nut plate inside the door shell that moved in and out to effect a tight and adjustable seal between glass and its seal mounted to the plastic spacer used to support the movable function.
The only real purpose for the black plastic spacer under the rear window latches is allow adjustment and NOT scratch the finish in the process.
Originally Posted by carringb
^Yeah, I would plan on shimming it out as well, although there is a little bit of adjustment built into the latches.
I will indeed have to shim the latches since my interior trim is non-existent now.
As things are now the stock latch mounting screws (M4 x 0.7) are too long for the application. The latch doesn't seal and I'm concerned trying to tighten them too much would puncture the outside seal and potentially burst the glass. FWIW IF that piece were available to me in the glass biz it'd cost upwards of $800 MY COST!
For the side glass there are thru holes in the body that align with threaded inserts in the spacer ring that holds the glass movable assembly to the body---this is butyl tape filled against the body. Once the assembly is in place and mounting bolts carefully drawn down the latches would sit on top of the trim piece and essentially clamp the latches to the spacer ring, interior trim panel and body metal in between it all.
Because I'll cover all side glass over with interior panels having the side glass latches snug becomes important as I don't want leaks and I don't want to have to access any of that glass once my build is completed.
Even so I'm building with the distant possibility of replacing the glass should that ever occur.
Thanks again guys--great help!