XJ6 & XJ12 Series I, II & III 1968-1992

Those Rusted Windscreens

 
  #1  
Old 12-26-2018, 07:54 PM
Senior Member
Thread Starter
Join Date: Jan 2007
Location: North Carolina, USA
Posts: 641
Received 183 Likes on 99 Posts
Default Those Rusted Windscreens

Hello all... Doing some cut metal work for a client today and found some things I thought you may find interesting.
I know we've all seen our share of bubbling around the windscreens. In NC we have pretty good luck metal wise, but even at that I bet at least 75% of the cars I handle have some degree of rust in the windscreen chanel.
I decided to try something new removing the windscreen. I wasn't concerned with the glass or trim, so I took a torch and heated the rubber molding holding the windscreen in place. Normally that is so hard you can barely cut through it, but burning it really helped. Anything that is brown around the white paint isn't rust, it's where the torch had burned the rubber...
I also took some time and really ground the channels down, trying to get to bare metal. So you see an assortment of white, brown, black and silver in the photos... it's just different levels of paint, burn, primer and bare metal.
I've always found the way the metal folds in and joins together rather fascinating... One thing I didn't ever put together mentally was that where the different pieces of metal join together on the upper side of the channel it's attached with spot welds, and there is also some lapping metal there. What appears to happen is when the water gets into the channel and sits on the spot welds, that is the beginning of the rust through..
There is also one spot on the rear that is problematic... The same support that causes the straight line rusted spot on the rear wing also extends to under the rear windscreen. That's a bad spot for moisture to accumulate..
Unfortunately the only real suggestion I have to help with it is to put POR15 in the channels if you ever have cause to remove the windscreens...
But I did think it was interesting to track down some the cause of the problems...

Cheers
David
shop.EverydayXJ.com






 
The following 7 users liked this post by davidboger:
Andy Paine (01-12-2019), Daf11e (12-27-2018), Jag7651 (12-26-2018), LnrB (12-26-2018), Mkii250 (12-27-2018), olivermarks (12-31-2018), rustfreemike (12-28-2018)
  #2  
Old 12-26-2018, 10:35 PM
Veteran Member
Join Date: Mar 2014
Location: Tehama County, California, USA
Posts: 17,204
Received 3,475 Likes on 2,712 Posts
Default

David!
You're still in business!
That's So great!

I hope Never to have to replace either windscreen (no bubbling to this point in either one) but I'll save this post to remind me to rust-proof the whole area if the need ever arises.

It's so good to see you survived the hurricane and resulting flooding.
(';')
 
The following users liked this post:
davidboger (12-27-2018)
  #3  
Old 12-27-2018, 09:52 AM
Veteran Member
Join Date: Jul 2012
Location: Walnut Creek, California
Posts: 5,737
Received 1,947 Likes on 1,570 Posts
Default

I add my "DITTO" as well.


And another great necropsy on a cat to assist in keeping other cats sound and on the road.

In most cases, I expect that closing the seam by weld is not practical.

But, I have read of modern type "glues" used to fasten steel panels in lieuy of weld that might be the product to close those seams.

Or even "dum dum" used by some makers to close seams. A type of "caulk" for metal.

Carl
 
The following 2 users liked this post by JagCad:
Coventrywood (01-05-2019), davidboger (12-27-2018)
  #4  
Old 01-10-2019, 10:23 AM
Junior Member
Join Date: May 2015
Location: Atlanta Ga
Posts: 22
Received 3 Likes on 3 Posts
Default Drain tube or drain channel?

David - I seem to be getting the formation of the dreaded rear fender hole (see photo). Is there a drain tube or drain channel that runs through that area? Perhaps the gas cap scuttle drain?
​​​​​​​since there is a rather straight, raised 'line' that must be undersurface rust - I figure there is a channel or body seam under there?

​​​​​​
 

Last edited by Ponysnake; 01-10-2019 at 10:26 AM. Reason: add photo
The following users liked this post:
davidboger (01-12-2019)
  #5  
Old 01-10-2019, 10:33 AM
Junior Member
Join Date: May 2015
Location: Atlanta Ga
Posts: 22
Received 3 Likes on 3 Posts
Default Baffle at the gas tank

I may have answered my own question. My problem seems to be the area which you called the "Baffle at the gas tank". I see this looks severely rusted on your cut-up XJ6.
 
The following users liked this post:
davidboger (01-12-2019)
  #6  
Old 01-14-2019, 07:50 PM
Member
Join Date: Jul 2017
Location: Hudson, NC
Posts: 61
Likes: 0
Received 30 Likes on 21 Posts
Default

Just tackled this issue this week on the front windscreen. I had the bubbling at the corners but got lucky - only surface rust was present. I don't think the screen had been out before; whoever put it in did a lousy job. A thump heard going over bumps turned out to be the screen loose in its channel around over 50% of the glass perimeter - that made removal rather easy. Removal of the screen revealed a nice cast of the window channel.

It's back in now and curing. Now on to the sunroof gasket.
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Amelorn
XJ XJ8 / XJR ( X308 )
6
10-20-2017 02:39 PM
cjp
F-Type ( X152 )
8
07-30-2014 08:19 PM
Jack the lad
X-Type ( X400 )
6
09-02-2011 01:47 AM
oliverrobert
X-Type ( X400 )
13
03-19-2010 09:33 AM
Brake buster
XJS ( X27 )
2
03-31-2008 03:47 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Quick Reply: Those Rusted Windscreens


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: