sun roof understanding

[junkman300SD]

I have water on the front floor boards of my 86 coupe. It's apparently been an ongoing issue because both firewall kick panels are water damaged and need to be replaced.

On many cars, sunroof drains are intended to handle the water and the seals are mostly to keep out wind noise and only some of the water. Is this correct for the 911 too?

The PO replaced the sun roof seals but there is a 1/4" gap on both sides between the front and rear seal. I'm hoping that I don't have to replace the seals.

This PO didn't do things slow. He didn't do them fast. He did them half fast.

[Marc Bixen]

Yes, the felt seals are not "water tight" seals. They allow some leakage that drains. 2 drains at the front go down the a-pillar, 2 in the rear exit above the rear hood hinges. Blow some air through these. Chances are that your leak is at the corners of the windshield seals where the water puddles. Old dried out w/s seals allow the water to go around the seal in this area.

[MichaelSJackson]

I had a leak on the passenger side. I used weed-eater line in a drill to route out all 4 drain lines from my sunroof. (Not blocked. Minimal dust.)

Since I had the carpet out to dry, I used painters tape (gentle) on the seams of the sunroof, windshield, fender gap and door seal. I also laid tissue paper in the footwell to quickly detect any leaks. Then started soaking that side of the car with the garden hose. (No leak.) then started removing sections of the tape, until the leak showed itself.

In my case, it was the top front corner of the door seal.

[RSTarga]

sure it is not the windshield seal?

[junkman300SD]

Originally Posted by RSTarga

sure it is not the windshield seal?

The windshield seal was an issue. It was replaced with an OE seal by a person that has been installing glass since these cars were new. The first rain after the seal, I opened the door and had water coming down from the headliner close to the door on both the driver and passenger side of the passenger compartment.

I think my next step is to find and make sure the drains are clear then run water over various parts of the seam between the sun roof and the body. At least I now know that the roof seals aren't meant to be completely water tight but do limit the amount of water so that the drains aren't over powered. I note that other cars of this era (ie 85 Mercedes 126 and 123 cars) have failing drain tubes in addition to clogged tubes.

A couple of things are certain. Water has been an issue for a long time. There is still enough water that the drains aren't handling it all. I'll report back when I have more information.

[Balisong]

When I saw the title I thought maybe you and your sunroof had come to terms or perhaps reached an agreement.

[junkman300SD]

Originally Posted by Balisong

When I saw the title I thought maybe you and your sunroof had come to terms or perhaps reached an agreement.

Hopefully we will come to an agreement. I'm in the process of building a nice 30x40' shop and am putting as much as possible off at least until it's wired.

[junkman300SD]

Originally Posted by Marc Bixen

Yes, the felt seals are not "water tight" seals. They allow some leakage that drains. 2 drains at the front go down the a-pillar, 2 in the rear exit above the rear hood hinges. Blow some air through these. Chances are that your leak is at the corners of the windshield seals where the water puddles. Old dried out w/s seals allow the water to go around the seal in this area.

The windshield seal is new OE done under my ownership. The leak continues after the replacement.