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Rear windscreen - seal and rust issues

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Erik
Posts: 27
Joined: Wed Dec 12, 2018 2:49 pm

Rear windscreen - seal and rust issues

Postby Erik » Thu Jan 10, 2019 8:21 am

Hi all,

I’m a bit worried about my rear windscreen.

Neither the inner nor outer seal is completely tight, to the extent that dirt has accumulated underneath them, ever widening that gap. Rust has started to appear in both lower corners, the right one worse than the left. Water drips onto the rear shelf from above when it rains as the outer seal at the top doesn’t seal properly. After I’ve been driving in the rain and repark the car in the garage, there’ll be moisture under the inner seal (which I can lift easily) for several days. As a result, I feel really discouraged to drive the car when it’s wet outside, which defeats the purpose of having this gorgeous XJ40 as a daily driver (which is still my intention).

Shame as the rest of the car is in such great condition, and it drives so well.

One option would be to remove the seals, clean the dirt around the edges and reseal again, properly. That should delay the development of rust around the lower corners and prevent water from leaking in.

Another option is to have the window and seals removed, clean and scrape off rust, weld, repaint a large section of the car, and then refit everything ... That on its own would be expensive here in Sweden. Not to mention the risk of discovering other nasty and costly surprises once I scratch beneath the surface! Either way, not something I can do by myself.

Any advice or ideas are welcome … Especially inexpensive ones.

Sorry about the poor pictures. Had to take them in the garage with flash, as it's raining outside ...

Image

Image
1987 3.6l Sovereign Solent Blue
1959 MGA 1500 Coupe

stevemc
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Posts: 692
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Location: north wales
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Re: Rear windscreen - seal and rust issues

Postby stevemc » Thu Jan 10, 2019 8:57 am

Erik wrote:Hi all,

I’m a bit worried about my rear windscreen.

Neither the inner nor outer seal is completely tight, to the extent that dirt has accumulated underneath them, ever widening that gap. Rust has started to appear in both lower corners, the right one worse than the left. Water drips onto the rear shelf from above when it rains as the outer seal at the top doesn’t seal properly. After I’ve been driving in the rain and repark the car in the garage, there’ll be moisture under the inner seal (which I can lift easily) for several days. As a result, I feel really discouraged to drive the car when it’s wet outside, which defeats the purpose of having this gorgeous XJ40 as a daily driver (which is still my intention).

Shame as the rest of the car is in such great condition, and it drives so well.

One option would be to remove the seals, clean the dirt around the edges and reseal again, properly. That should delay the development of rust around the lower corners and prevent water from leaking in.

Another option is to have the window and seals removed, clean and scrape off rust, weld, repaint a large section of the car, and then refit everything ... That on its own would be expensive here in Sweden. Not to mention the risk of discovering other nasty and costly surprises once I scratch beneath the surface! Either way, not something I can do by myself.

Any advice or ideas are welcome … Especially inexpensive ones.

Sorry about the poor pictures. Had to take them in the garage with flash, as it's raining outside ...

Image

Image


mine had exactly same issue the screen is bonded into the metal and the seals or cosmetic realy i am afraid its screen out treat the rust and re fit, mine was not to bad as caught it early looks like your early stages to
Jaguar xj40 1986 build D513 NBU vin number ends 504501
Audi A4 Sline 2016
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pimgmx
Posts: 3217
Joined: Tue Jul 08, 2014 12:07 pm
Location: South East of the Netherlands

Re: Rear windscreen - seal and rust issues

Postby pimgmx » Thu Jan 10, 2019 10:00 am

I had similar symptoms on my Insignia.

As Steve said: the chrome/rubber trim is merely cosmetic and pretty easy to remove, the rear windscreen is bonded in...
I paid about 120 EUR to a car glass specialist to have the windscreen cut out and bonded in again so the rust could be tackled the proper way.

If you're able to do the rust proofing/welding yourself I'd recommend to get the windscreen out and attack the rust before it gets any worse.

With a bit of luck the tin worm damage is limited to the steel's edges only, and no respray is needed.
In a slightly less fortunate scenario you might get away with one or two rattle cans (all you need is the Jaguar 3-letter paint code to order the correct colour) to fix the paint...

the daily: 01 S8 http://bit.ly/2kIwP4m
the tractor: 77 LaRo LW https://bit.ly/2Hr9n6y
the eyecatcher: 93 Insignia http://bit.ly/1iGrmsU
the GT: 89 XJS http://bit.ly/1WQGpC5
the project: 95 X306 http://bit.ly/1cW11DN
the pocket rocket: 97 Z3 http://bit.ly/12IfE7B
the ex: 93 3.2 http://bit.ly/14GTNrq

Brake buster
Snr Member
Posts: 594
Joined: Sun Jul 03, 2016 8:18 pm

Re: Rear windscreen - seal and rust issues

Postby Brake buster » Thu Jan 10, 2019 10:27 am

as above, the rubber and chrome will actually carefully pull away from the car leaving the rear screen still in place and bonded to the car, you can still drive around like this as it will not compromise the car ( just its looks ) , but will give you a far better chance to inspect the issues ,

i would suspect the actual screen bonding is ok , and the leak is coming through the perforated metal around the bottom of the screen panel , the worst side is the right side and as seen the rust has moved into the rear deck scuttle section ,

to repair this will need welding and repainting, if your extremely lucky the rear screen may not need to come out for this work , however, in most cases it needs to for easier access and to prevent any damage , you would get away with just the rear scuttle needing paint

i would also remove the C pillar trims and inspect behind as these will have corrosion behind them as well

if the rest of the car is good , its well worth the effort and cost to preserve the car , but as ever with these situations, its time over cost and convenience ,

best of luck and keep us updated if you decide to do the work , and take some pictures

BB
1994 3.2S in Morocco red and Doeskin/Ruby red interior
1989 V12 XJS White with Mulberry interior
2004 2.1 X-Type Platinum with Champagne Leather interior

previously ,
1999 V8 Sovereign in Seafrost with Oatmeal and Antelope interior

katar83
Posts: 2675
Joined: Tue Aug 23, 2011 11:17 am
Location: Cambridge

Re: Rear windscreen - seal and rust issues

Postby katar83 » Thu Jan 10, 2019 11:37 am

One thing to add here, if this wont be sorted this year then it will be much more expensive to fix next year, its pretty much last moment before it turns into a rotten egg.
1997, 4.0 LWB X300 - Unlucky car but still a daily driver.
1988, 3.6S XJS - Never ending restoration project.
1994, 3.2S X300 - Accident damaged, October 2015. Gone!
1994, 3.2S XJ40 - Long gone.

Brake buster
Snr Member
Posts: 594
Joined: Sun Jul 03, 2016 8:18 pm

Re: Rear windscreen - seal and rust issues

Postby Brake buster » Thu Jan 10, 2019 12:05 pm

from our own archive,

dont be scared, be informed.........

viewtopic.php?t=1760

BB
1994 3.2S in Morocco red and Doeskin/Ruby red interior
1989 V12 XJS White with Mulberry interior
2004 2.1 X-Type Platinum with Champagne Leather interior

previously ,
1999 V8 Sovereign in Seafrost with Oatmeal and Antelope interior

naki_k
Super Moderator
Posts: 28278
Joined: Sun Feb 21, 2010 9:25 pm
Location: Kirton, nr Boston, Lincolnshire

Re: Rear windscreen - seal and rust issues

Postby naki_k » Thu Jan 10, 2019 12:39 pm

Here’s another thread that’s excellent for showing bodywork repairs in general.

viewtopic.php?t=4160
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6 x2
93 6.0 XJ81 XJ12
94 4.0 XJR
94 4.0 Daimler
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

Erik
Posts: 27
Joined: Wed Dec 12, 2018 2:49 pm

Re: Rear windscreen - seal and rust issues

Postby Erik » Thu Jan 10, 2019 2:55 pm

katar83 wrote:One thing to add here, if this wont be sorted this year then it will be much more expensive to fix next year, its pretty much last moment before it turns into a rotten egg.


Ohhh yikes. So time to squeeze this job into the 2019 budget :D
1987 3.6l Sovereign Solent Blue
1959 MGA 1500 Coupe

Erik
Posts: 27
Joined: Wed Dec 12, 2018 2:49 pm

Re: Rear windscreen - seal and rust issues

Postby Erik » Thu Jan 10, 2019 2:59 pm

Brake buster wrote:from our own archive,

dont be scared, be informed.........

viewtopic.php?t=1760

BB


That's actually the article that triggered me to investigate further ...
1987 3.6l Sovereign Solent Blue
1959 MGA 1500 Coupe

Erik
Posts: 27
Joined: Wed Dec 12, 2018 2:49 pm

Re: Rear windscreen - seal and rust issues

Postby Erik » Thu Jan 10, 2019 3:06 pm

Brake buster wrote:as above, the rubber and chrome will actually carefully pull away from the car leaving the rear screen still in place and bonded to the car, you can still drive around like this as it will not compromise the car ( just its looks ) , but will give you a far better chance to inspect the issues ,

BB



So BB, is it difficult to pull off the rubber seal and chrome? Anything I should be cautious about before giving it a shot?

I think doing this would be a good start. Then I can assess the real damage and situation ... And find someone willing to take on the job, I have a few options in mind but they'll likely be costly. Nonetheless, as the rest of the car is in such great condition I would like to invest in solving this issue so that I can drive the car, rain or shine.

/Erik
1987 3.6l Sovereign Solent Blue
1959 MGA 1500 Coupe


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