So the good news is that the installation of the window run channel trim pieces only takes about 5 minutes. It’s getting to the run channel trim is what is labor-intensive. Our 1990 Mustang GT needs more than just the run channel trim and new run channel weatherstrips. While we’re going through all of this sweat equity, I’m using this opportunity to replace the roof rail molding, outer door belt molding, and outer door belt weatherstrip.
To further bolster our efforts, I’m also going to scuff, prep, and repaint the mirrors and the door frames with our Mustang Trim Black Exterior Paint Kit. Doing this will really bring all of the new components together and make everything look fresh. Depending on the condition of the run channel weatherstrip in your car, it’s going to be in your best interest to remove the door panel, mirror, and outer door belt molding.
Whenever this stuff is out of the way, begin removing the old run channel weatherstrip.
- In our case, the weatherstrip was so dry and brittle, it came apart in several pieces. A plastic pry tool and an angled pick did the trick to dig out all of the old weatherstrip.
- Once you’re through with that, gently pry the run channel trim away from the door frame. We found it easier to remove the boomerang or large section first, followed by the vertical piece.
- If you’re repainting your door frame, go ahead and drill out the three rivets that retain the outer door belt weatherstrip. Be sure that the glass is down into the door frame and use a plastic pry tool to shield the glass from the drill bit
- Remove the weatherstrip and thoroughly clean the door frame with an all-purpose cleaner.
- Go ahead and repeat the previous steps for the other door.
Prep & Paint
- Carefully and methodically scuff the door frame with a green scuff pad and ensure the surface is nice and smooth.
- Clean the residue with a wax and grease remover and then you can mask everything off. You’ll need an assortment of painter’s tape and some thin plastic drop cloth to cover the body of the car. We would recommend some fine-line and 1-inch wide masking tape. First, start by masking the intricate areas first on the door frames. From there, you can use the wider tape in conjunction with the drop cloth. Be sure and cover all areas that you don’t want to paint or overspray on. With everything masked off, wipe the door frame with a paint prep and a lint-free towel.
- Be sure the area is well lit and well ventilated and begin painting the door frames with some trim black paint. Hold the can about 6 to 8 inches from the surface and make even passes. You’ll want each coat to be medium-wet and the flash time is about 5 to 10 minutes in between coats. Of course, always read the instructions to ensure a quality finish. 2 to 3 coats are all you should need to completely cover the door frames.
- Whenever your desired result is achieved, allow the paint to properly cure. Full hardness is obtained in about 48 hours.
- After the recommended waiting period, you can remove the drop cloth and masking tape.
- Now we can install our new 5.0 Resto run channel trim.
- We would start with the boomerang section first and align the trim with the rearward corner of the door frame. Gently push this section onto the door frame so that it holds itself in position.
- Next, take the vertical section and slide the 45-degree end into the ‘L’ bracket. If needed, adjust the large section accordingly.
- Once you have this situated the way you like it, fully seat the vertical section by pushing the trim onto the door frame.
- Go ahead and fully seat the large section by working your way across the top of the door frame.
- Now that the run channel trims are in place you can install the run channel weatherstrip, outer door belt weatherstrip, outer door belt molding, mirror, and roof rail molding.
- After that, you can reinstall the door panel and the associated door components.
- Repeat these steps for the other side and then you’re good to go!
This Fox Body Run Channel Trim for 1987-93 Mustangs from 5.0 Resto has been a long time coming, but the wait has definitely been worth it! We hope this article will help with any replacement questions you may have.
As always, for all things Mustang keep it right here with the Real Mustang Enthusiasts at LMR.com