C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Window/Door Water Leak

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Old Dec 2, 2009 | 04:07 PM
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Default Window/Door Water Leak

I still have water leaking in sides of the dash (see pictures).I installed new W.S. and sealed under the Retainers.Any idea of how it could be coming in? Anyone have this problem? Could it be the Door Weatherstrip Leaking? So hard to see with doors closed.
Thanx







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Old Dec 2, 2009 | 04:17 PM
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Did you use any glue?

I had the same problem with my 84, Same spot yours is leaking...
I put new WS as well & it still leaked...

I have got mine to stop leaking now, All I had to do was add 3M weather strip glue to the door WS & have not had any problems with water getting in since..

Hope this helps!!!

Ant...
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Old Dec 2, 2009 | 04:21 PM
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Don't know if this is relative, but are your windows well sealed against the w/s? Maybe they need adjustment.
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Old Dec 3, 2009 | 10:44 PM
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Ive tried almost everything and mine does the same. They do not seem bad at all, but my last try is to replace the door hinge bushings.
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Old Dec 4, 2009 | 11:03 AM
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Sounds like you need a new set of these!


Last edited by ZRWHAT; Dec 4, 2009 at 11:09 AM.
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Old Dec 4, 2009 | 11:17 AM
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Looking at the "path" of the water stains that have been left behind, they are pointing to what I mentioned in my last reply with the water drip seals being suspect.

As someone mentioned above, you also need to make sure the W/S is glued all the way around, if its not glued, it can provide a path along the W/S for the water to find a opening to get in.
Take a look at the stains on your photos and you can clearly see where the water is coming from.....

I know Wilcox sells these drip seals, not cheap but not too many places sell them.

Good luck

Last edited by ZRWHAT; Dec 4, 2009 at 12:07 PM.
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Old Dec 4, 2009 | 01:15 PM
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Originally Posted by ZRWHAT
Sounds like you need a new set of these!

the passengers side on my 90 was so bad, the internal metal strip was completely rusted into powder.
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Old Dec 4, 2009 | 02:24 PM
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Originally Posted by ZRWHAT
Looking at the "path" of the water stains that have been left behind, they are pointing to what I mentioned in my last reply with the water drip seals being suspect.

As someone mentioned above, you also need to make sure the W/S is glued all the way around, if its not glued, it can provide a path along the W/S for the water to find a opening to get in.
Take a look at the stains on your photos and you can clearly see where the water is coming from.....

I know Wilcox sells these drip seals, not cheap but not too many places sell them.

Good luck
We sealed under the WS Retainers really well with Black Silicone and under the WS with 3M WS Adhesive.I'll change out the drip seals and see if it helps..I wonder if sealing them with Silicone would help? Wilcox wants $56.00 a Piece???
Thanx Guys

Last edited by CAJUN C4; Dec 4, 2009 at 02:32 PM.
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Old Dec 4, 2009 | 02:38 PM
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I just went and looked at them.Very hard feeling.Does the water go behind the seal or between the door WS and the Dash Seals?

I'll take some more pictures tomorrow and post them now that I know what the problem must be.
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Old Dec 4, 2009 | 03:00 PM
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Originally Posted by CAJUN C4
I just went and looked at them.Very hard feeling.Does the water go behind the seal or between the door WS and the Dash Seals?

I'll take some more pictures tomorrow and post them now that I know what the problem must be.
Supposed to keep the water channeled towards the outside, as you can see from your stained door panels, the leak you have is a lot higher so the leak appears to be towards the top of this seal that seems to be the real issue causing your problem.

One more question: has you front windshield ever been replaced?

If you're sure you glued you WS 100% with a continous bead, not much left then this.

The seals actually have metal sandwiched in them, when they start to rust, the swell up and absorb the water and rot even faster, then they allow the water to take a different path, looks like right into your door panel area in your case.

If you replace these, make sure you use weatherstrip adhesive on them so they stay in place and create a barrier to seal the inside from this runoff.

Good luck and let us know how these look when you get them, I'm gonna need a set soon myself..

Good luck,

Gibby

Last edited by ZRWHAT; Dec 4, 2009 at 03:08 PM.
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Old Dec 4, 2009 | 03:12 PM
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Gibby

I don't know if the windshield has ever been replaced. I do see,however,my left door WS right about where the stains are is kinda torn and ripped a little. I believe the door WS seals against these dash seals is this correct? I might also need the door WS as well?
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Old Dec 4, 2009 | 06:24 PM
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Originally Posted by CAJUN C4
Gibby

I don't know if the windshield has ever been replaced. I do see,however,my left door WS right about where the stains are is kinda torn and ripped a little. I believe the door WS seals against these dash seals is this correct? I might also need the door WS as well?
So you only replaced your "A" Pillar W/S? If your door W/S is original, and you see some deterioration I'd certainly replace that as well, no matter what year car you have, it the W/S is original, it is way past time to replace.

Looks like your problem is both door weatherstrips and a need for new rain drip seals, I thought your door weatherstrips were new (asumption on my part) or I would have suggested that right away. The new "A" pillar W/S is probably not mating up to your "old" door W/S too well and your door W/S is just plain done.......
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Old Dec 4, 2009 | 06:33 PM
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I agree:

I'll change both door WS & the 2 ea. Dash Seals.

I'll try and post more pictures tomorrow.

BTW: What actually makes the seal? The Dash Seals to Door WS and where does the "A" Pillar WS come into play?

Thanx

Dennis

Last edited by CAJUN C4; Dec 4, 2009 at 07:01 PM.
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Old Dec 4, 2009 | 10:18 PM
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You might try some glue under them before you replace them. Then if this fails consider getting a new set.

The internal metal portion of this parts tends to rust with age and when they rust they distort. This can and will cause a water leak if not replaced.

Willcox
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Old Dec 4, 2009 | 11:09 PM
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Originally Posted by Willcox Corvette
You might try some glue under them before you replace them. Then if this fails consider getting a new set.

The internal metal portion of this parts tends to rust with age and when they rust they distort. This can and will cause a water leak if not replaced.

Willcox
Thats exactly why I just ordered mine from Wilcox along with a door weatherstrip set. Mine are "crunchy" and they are long overdue....
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Old Dec 5, 2009 | 11:44 AM
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Originally Posted by ZRWHAT
Thats exactly why I just ordered mine from Wilcox along with a door weatherstrip set. Mine are "crunchy" and they are long overdue....
Mine are crunchy also.Will order a set ASAP along with a Rt. Hand Door WS.I'll post some more pictures today.

Thanx Guys
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Old Dec 5, 2009 | 12:17 PM
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Here's some closer shots.





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To Window/Door Water Leak

Old Dec 5, 2009 | 02:27 PM
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Cajun,

Left side weatherstrip is most definately done, right side looks a lot better, If you are doing one, might as well do both unless the Right side is new....

Good luck
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Old Dec 5, 2009 | 02:31 PM
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Originally Posted by ZRWHAT
Cajun,

Left side weatherstrip is most definately done, right side looks a lot better, If you are doing one, might as well do both unless the Right side is new....

While you're at it, you might want to check and make sure you door hinged are tight, test them by opening the door 6-10 inches, pull up and down on the end of the door closest to your quarter panel, if you get any noticable play, bushing may need to be replaced. Do your doors close easily? Do they drop down slightly when you open them up?

Tel-tale signs of wear if any of the above are present....

Good luck
Gibby
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Old Dec 5, 2009 | 02:36 PM
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Jeff-

Thanks for the order

Willcox Inc.
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