Weather seals rear wings

UK forum for general and technical discussion about the Z3 roadster

Moderator: Gazza

Post Reply
User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 85

  Z3 roadster 1.9i
Contact:

Weather seals rear wings

Post by dazthephot » Fri 19 May, 2017 14:01

Hi all. Just wondering where the water is coming from after a problem with the tilt sensor. Should there be a mastic sealant in these joins?
Image
Image



Sent from my iPhone using Tapatalk Pro

User avatar
BladeRunner919
Joined: Fri 17 Feb, 2012 20:18
Posts: 2201

  Z3 roadster 1.9

Re: Weather seals rear wings

Post by BladeRunner919 » Fri 19 May, 2017 15:25

I don't think any of the joints have mastic, as they're bolt-on wings. That area is outside the 'dry' area of the boot - if you look at where the boot rubber seal meets the boot aperture, then aything outside that is ok to get wet. Any water in the area you are looking at will drain away, but has no route into the boot. The only real possibilities are the 3rd brakelight, aerial grommet or (rarely) the seal where the bottom of the roof meets the bodywork. Almost certainly one of the first two.

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 85

  Z3 roadster 1.9i
Contact:

Re: Weather seals rear wings

Post by dazthephot » Fri 19 May, 2017 15:34

Thanks.
I have a new grommet on order. I'll look at the third brake light tomorrow but i'm wondering how water would transfer from the top centre of the boot down through the boot lid to the left side of the car??

It hissed down again last night and sure enough the tilt sensor well had water in it. When the new one comes i think i'll wrap it in a plastic sleeve then fit it as i can't get the bottom drain bung out....if that's what that is of course.

Juvvajuvva
Joined: Sun 06 Nov, 2016 16:52
Posts: 32

  Z3 roadster 2.8

Re: Weather seals rear wings

Post by Juvvajuvva » Fri 19 May, 2017 19:32

Lots of third brake lights have, as well as a rubber seal, a smear of mastic
around the entire circumference of the lense to stop the exact problem you are describing!

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 85

  Z3 roadster 1.9i
Contact:

Re: Weather seals rear wings

Post by dazthephot » Sat 20 May, 2017 10:35

Right. Today is dry so I will investigate further. Thanks.


Sent from my iPhone using Tapatalk Pro

User avatar
dazthephot
Joined: Wed 09 Apr, 2008 19:58
Posts: 85

  Z3 roadster 1.9i
Contact:

Re: Weather seals rear wings

Post by dazthephot » Sat 20 May, 2017 16:21

Replaced the aerial body grommet today. Small steps first then of the rain comes in I'll check the third brake light.
Also created a small drain in the rubber grommet under the tilt sensor.


Sent from my iPhone using Tapatalk Pro

Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 2 guests