Originally Posted by Acheron2010
Back in 2017, AirMiles posted a great idea for improving the window guard 1/4 turn fasteners with permanent stainless threaded bolts and nylon nuts.
Unfortunately I cannot get ahold of AirMiles to ask, what is the specific size of stainless bolt, washers and nuts that you used in the repair.
Has anyone repeated this project? What sizes did you use? Thanks.
Nice idea if there's a danger of the curved window rock guard covers unintentionally coming open somehow. While I can't really see the need to do all of this if your middle window covering is like mine, as it closes over the flanges of the curved window covers locking them down securely for travel. Thanks for posting this.
If one needed to do this it's fairly easy. The quarter turn fasteners are easy to remove (from experience). Just drill them out with a #30 bit. It will remove the original pop rivet without enlarging the hole. Then it will be easy to determine the size and length needed for the machine screws, the flat nuts and the nylock nuts. Then just use some Tremco TremPro 635 or Sikaflex 221 in the rivet holes, the backside of the fastener flanges and on the grip side of closed end, domed 1/8" x 1/4" rivets
. After assembly simply wipe off any squeeze out (if necessary) with a plastic razor blade or putty knife followed by a squirt or two of mineral spirits on a shop towel.
Pretty easy and straightforward. As for the curved rock guards you would still need to remove the fastener screw (probably just cut it off) and enlarge the hole if necessary for the new machine screw shank to fit through.