The C3, or third generation, Corvettes were manufactured between 1968 and 1982 and are now decades old. Over the years, the weatherstripping on these cars can shrink and crack, allowing rain to enter the cars. Replacing old seals with new weatherstripping material can improve your comfort and reduce road and wind noise. Purchase replacement weatherstripping kits and necessary supplies from any Corvette aftermarket parts supplier.
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Things you need
- Weatherstrip kit
- Open-end or box wrench
- Blanket or soft cloth
- Adhesive release agent
- Adhesive cleaner
- Weatherstrip adhesive
- Shop towels
- Masking tape
- Flat screwdriver
- Putty knife
- Phillips screwdriver
Park the Corvette on a level surface. Open the battery compartment behind the driver's seat and remove the negative lead from the battery with a box end wrench (because your doors will be open for an extended time).
Open both doors and release the T-top latches with your fingers. Remove the tops and place them on your work surface. Place a blanket or soft cloth underneath them to prevent them from getting scratched.
Pull back the edges of the old seals and spray adhesive release agent where the weatherstrip meets the T-top edges. Allow it to soak for about 10 minutes to dissolve the old adhesive. Carefully pry the old weatherstripping away from the tops with a small putty knife. Use a set of pliers to remove the remaining plastic tips that secure the end of the weatherstripping.
Clean the old adhesive and any remaining material from the edges with adhesive cleaner and a shop towel. Soak the towel with the cleaner and rub the area with the towel until the surface is clean.
Apply weatherstrip adhesive to both surfaces. Wait 15 minutes until both sides are tacky to the touch. Slowly press the weatherstripping into place with your fingers. Press the material in tight places with a putty knife or small flathead screwdriver. Place masking tape across the weatherstripping every six inches to hold it in place while the adhesive cures. Allow it to dry for 24 hours.
Locate the retaining screws on each end of the door weatherstripping and remove them with a Phillips screwdriver. Roll back the edges and spray adhesive release agent over the old glue and allow it to soak for 10 minutes. Carefully remove the material with a putty knife as you did on the T-tops. Remove the remaining adhesive and material with adhesive remover and shop towels.
Apply weatherstrip adhesive down the edge of the door and corresponding material. Wait 15 minutes to allow it to become tacky. Attach the trim end screw to the weatherstrip material and connect it to the door with a Phillips screwdriver. Carefully press the seal in place with a putty knife and place masking tape across the material every three inches to hold it in place. Continue installing across the lower portion and front side of the door. Repeat the process on the other door.
Locate the remaining weatherstrip on the front and back sides of the window frames. Remove the material using the same method you used on the T-tops and doors. Install the new weatherstripping material and allow it to cure overnight.
Reinstall the T-tops, reattach the negative lead on your battery and close the doors.
Tips and warnings
- Remove the weatherstripping material from the packaging and lay it out in the sun to make it easier to work with.
- Familiarise yourself with how the new weatherstripping should be installed by pre-fitting each piece before installation.
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