gazfish

Hi All,

Removed my S2 rear center spoiler to track down a leak, most of the fixing brackets were rusted away and there was a lot of muck under there. There is a channel that runs around outside the glass down each side and at the bottom covered by the spoiler, should there be a drain hole at the bottom? Or should there be a rubber filler of some sort ?
Can't imagine the designers intended the water to collect there and the spoiler doesn't seal it.

Thanks,
Gary

Mrmerlin

if your talking about the spoiler attach bolts to the hatch, these seal with non setting strip caulk.
I would suggest to use 3M sealing strip caulk placed around each hole.

NOTE this caulk is also good for sealing the blower box

https://www.google.com/url?sa=t&rct=...8y1TnTDnnVloKQ

gazfish

Thanks for the response, I probably wasn't very clear. There's a channel between the edge of the glass and the hatch frame where the rubber spacers are for the spoiler to fit on, water can get under the spoiler and sit in this channel at the bottom. Maybe if all the fittings on mine were in place water wouldn't get under the spoiler.

Mrmerlin

no your correct,
water will sit in the channel,
to remove it,
open the hatch and it will run to the top of the window molding,
then blot the puddle with a towel

James Bailey

Yes a very common area for rust as mud sits there with no place to go.

gazfish

Ok, thanks guys

Oldewoodupes

Reviving an old thread to see if anyone has any new solutions to deal with this issue. I understand Stan’s idea, but I don’t feel all of the water will drain passed the clips that hold the trim in place, leaving water in the trough around the glass to rust out the hatch. I was thinking maybe removing the trim and spraying wd40 around the perimeter of the trough every year, but I’m sure someone has a better solution. Has anyone installed drain holes?

GerritD

I found the solution for my 928S.
Fill up the deep channels with black silicon. This way the water will only go over the windshield and will drip away along the drain holes at the back of the spoiler.
Water will not stay in the deep channels and this prevents rust and crud.
But I must say that my original metal black strips around the rear windshield are replaced by rubber strips that insert into a black plastic channel inside the deep channel. Much easier to remove in case of a paint job.
Here is a pic :

Oldewoodupes

Thanks for the reply Gerrit. So, the original trim won’t fit into the new rubber seal around the window? Is the silicone under the rubber seal? Are you running without trim then, just the rubber seal? Any closer pics you could post to show the installation? Sorry for all the questions, but this is good stuff

GerritD

The original trim will not fit since the original metal trim is fixed with metal clips in the deep channel.
The custom made rubber seal around the window consist in fact of
- a plastic holder (glued with black silicon in the deep channel)
- a rubber seal (trim) that is clipsed in this plastic holder
I have the same config at the front windshield.
The rubber seal (trim) looks like this :


I will try to post some better pictures how it actually is on my 928S .

Mrmerlin

another option but might make a bit of a mess inject the DC111 into the rusty areas,
the DC111 will make a water barrier so the metal will stop corroding use a brush to work it into the metal ,
use the 3M caulk to seal the plastic spacers

Oldewoodupes

That’s slick, Gerrit. I’d love to see what it looks like with rubber trim installed.

Stan, is this the stuff you’re talking about?

GerritD

Here already some pictures of my trim @ the rear windshield :





I will try to post also some more recent pictures as these pictures were taken about 8 years ago. But I can tell you that trim still looks perfect. Another advantage of having rubber trim instead of metal trim, it won't fade due to sun and other weather conditions.

Mrmerlin

Thats the stuff it will also preserve the new rubber trim that Gerrit is posting

GerritD

some recent pics :

Front windshield


Rear windshield