Weatherstripping and Water proof issues.
Thread Starter
4th Gear
Joined: Feb 2020
Posts: 4
Likes: 0
Weatherstripping and Water proof issues.
Hello all,
With the weather getting nicer recently I decided that I would wash my 88 for the first time. Much to my dismay I found that the point of contact between the window and the frame all the way down is not water tight. The weather stripping on this car has seen less then 300 miles so this was concerning to me. If any one has any tips on getting the car water tight it would be greatly appreciated, thank you.
With the weather getting nicer recently I decided that I would wash my 88 for the first time. Much to my dismay I found that the point of contact between the window and the frame all the way down is not water tight. The weather stripping on this car has seen less then 300 miles so this was concerning to me. If any one has any tips on getting the car water tight it would be greatly appreciated, thank you.
Racer
Joined: May 2016
Posts: 280
Likes: 135
From: Wales, UK
When I did my weatherstripping it settled in after a few miles and I had to adjust the window. If you take the door card off, you can change the angle of the glass, this allowed it to press against the seal better and tuck under the roof seal easily when going up & down.
Oil Producer
Joined: Apr 2014
Posts: 9,380
Likes: 2,744
double check that it isn't getting behind the window trim, or, between the window trim and the weather stripping retainer. this is the most common pathway for leakage. need to be sealed with sealant behind and between.
on my old 86 (was a resuscitated roach, not a show car, but it did look very nice) i used black polyurethane and ran a bed between the glass and the trim. then between the trim and the retainer and that did solve my issue. on nicer cars like my Z, i wouldn't do that, I would disassemble the parts and properly seal between each piece.my z doesn't leak, must be original.
on my old 86 (was a resuscitated roach, not a show car, but it did look very nice) i used black polyurethane and ran a bed between the glass and the trim. then between the trim and the retainer and that did solve my issue. on nicer cars like my Z, i wouldn't do that, I would disassemble the parts and properly seal between each piece.my z doesn't leak, must be original.
Safety Car
Joined: May 2001
Posts: 4,759
Likes: 1,647
From: Fairfax Virginia
I used silicone oil on my new weatherstripping as it was the easier way to be able to close doors and roof panels. If the weatherstrip is not holding enough tension use a bit of silicone under the weatherstrip to make it stand out better.
Not many C4's would pass the water spraying test that GM did while developing the C4. Mine had a bad leak near the fuse box on the passengers side. New weatherstripping and it leaks no more... The hardest to close is the rear glass with the both doors and windows closed. I lubricated the gasket with silicone oil and it closes much easier. A lot of Tire Shine products come with silicone as of of the ingredients. I found it in a bottle someplace and it has served me well for two decades on all of our vehicles. Just do not use Vasoline Petroleum Jelly as that stuff will destroy the seals.
Not many C4's would pass the water spraying test that GM did while developing the C4. Mine had a bad leak near the fuse box on the passengers side. New weatherstripping and it leaks no more... The hardest to close is the rear glass with the both doors and windows closed. I lubricated the gasket with silicone oil and it closes much easier. A lot of Tire Shine products come with silicone as of of the ingredients. I found it in a bottle someplace and it has served me well for two decades on all of our vehicles. Just do not use Vasoline Petroleum Jelly as that stuff will destroy the seals.
