Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

Windshield removal.What are the odds?

Thread Tools
 
Search this Thread
 
Old 01-22-2012, 06:26 PM
  #1  
LEADASS
Pro
Thread Starter
 
LEADASS's Avatar
 
Join Date: Apr 2009
Location: Topsham Me.
Posts: 540
Likes: 0
Received 5 Likes on 5 Posts
Default Windshield removal.What are the odds?

I'm starting a sunroof delete in the next week(s) or so and of course the wind shield is one of my first obstacles. I've searched the threads and it looks pretty dicey, who's done this recently and how can I save the glass? I'll have a buddy who's a glass guy do the removal but I'm looking for all insight and info that'll save me a bit of serious cash. Thanks, Brian
Old 01-22-2012, 08:39 PM
  #2  
danglerb
Nordschleife Master
 
danglerb's Avatar
 
Join Date: Oct 2006
Location: Orange, Cal
Posts: 8,575
Received 3 Likes on 3 Posts
Default

What I've heard is that no matter who does it, chance of damage is close to 50%, but maybe that can be improved with some slow and careful vs pro paid by the hour.

HF sells some cheap windshield removal tools, a wire with handles and a handle with a small blade sideways at the end and a wire attached handle to pull it with (knife handle is just to keep the blade correctly oriented). The also have various suction cups to pick up the glass with.

My parts car has "ok" glass, so I am going to give it a try with HF stuff before the chassis goes to scrap.
Old 01-22-2012, 09:15 PM
  #3  
yardpro
Rennlist Member
 
yardpro's Avatar
 
Join Date: Dec 2010
Location: Morehead City NC
Posts: 1,951
Likes: 0
Received 18 Likes on 16 Posts
Default

pros will have a hot knife they can use that minimizes the breakage
Old 01-22-2012, 09:28 PM
  #4  
EspritS4s
Rennlist Member
 
EspritS4s's Avatar
 
Join Date: Jul 2002
Location: Massachusetts
Posts: 2,095
Received 1 Like on 1 Post
Default

I've done it. It's tough to protect the paint of the windshield frame and the windshield itself, especially if you are using the piano wire approach. The blades on the pro-tools are designed to protect the frame paint, but I'm guessing that you still have to be careful. If you don't care about the paint, then it should be much easier to protect the windshield.
Old 01-23-2012, 12:32 AM
  #5  
Jim M.
Rennlist Member
 
Jim M.'s Avatar
 
Join Date: Nov 2004
Location: DFW Texas
Posts: 4,989
Received 828 Likes on 433 Posts
Default

I've done it unsuccessfully using the harbor freight tools. Managed to cut the sealant along the top, but could not get around the corners. It ended up coming out in 10,000 pieces. Also lots of paint damage to the frame area from the tools. Hire a pro and improve your odds to 50/50.
Old 01-23-2012, 01:56 AM
  #6  
nlneilson
Advanced
 
nlneilson's Avatar
 
Join Date: Jul 2004
Posts: 82
Likes: 0
Received 0 Likes on 0 Posts
Default

In the Porsche Service Manual
Removing and installing windshield 64-3

7. Press the steel wire from Repair Kit 47: 898
Ull through windshield weatherstrip at an
upper and secure it inside of special Tool VW 1351 (similar to a screwdriver). Now
pull the wire toward the inside and hold it on
the weatherstrip with the special 1001. Use the
grip to pull the wire in up to this point. Re-
peat this procedure around entire windshield.

50% as mentioned would be a good guess.
Take your time and make sure the adhesive is cut all the way around.
Be careful of the pressure with hands when trying to initially press the glass from the frame.

I tried to remove a windshield from a Pickup but should have taken more time as it cracked.

________________________________________
'79 5spd
Old 01-23-2012, 03:14 AM
  #7  
tailpipe
Burning Brakes
 
tailpipe's Avatar
 
Join Date: May 2008
Location: Thorndale Ontario Canada
Posts: 1,025
Received 6 Likes on 2 Posts
Default

The hardest part is getting good piano wire that doesn't break done it a few times always successfull...if the widow is broken its even harder with nothing solid to push on take your time it takes awhile but its not hard
Old 01-23-2012, 04:07 AM
  #8  
danglerb
Nordschleife Master
 
danglerb's Avatar
 
Join Date: Oct 2006
Location: Orange, Cal
Posts: 8,575
Received 3 Likes on 3 Posts
Default

I wonder what a local glass guy would charge to pull from one car and install in another? (with/without removing the old cracked one as well).

One reason I was planning on trying it myself is that I would like to take some time to clean all the old sealant off before the new glass goes in, maybe a few other "chores" easier with glass out like messing with the pod.
Old 01-23-2012, 08:12 AM
  #9  
FLYVMO
Rennlist Member
 
FLYVMO's Avatar
 
Join Date: Feb 2010
Location: Tucson,AZ
Posts: 1,347
Likes: 0
Received 60 Likes on 22 Posts
Default

I broke 100% of the windshields I tried (2), by using the HF tools (wire and suction cups) on one, and a flat blade oscillating cutoff tool (worked the best) for the second. Both windshields had the newer style sealant/adhesive which seems much harder and tougher than the early variant. The oscillating tool cut all of the sealant except on the lower part of the windshield where the tool could not reach because of interfering with the lower frame (dash was out).

I called 4 different places (3 did not want to come and remove the windshield unless I bought a new one), the 4th quoted me $150 to remove with no guarantee of not breaking it.

Hope you have better luck, just remember to NOT push on the windshield from the inside with any significant force, as it WILL crack the glass.

Cheers!
Carl
90GT project
Old 01-23-2012, 06:01 PM
  #10  
stuartbrs
Instructor
 
stuartbrs's Avatar
 
Join Date: Aug 2010
Location: Tasmania
Posts: 246
Likes: 0
Received 0 Likes on 0 Posts
Default

The chances of it breaking are very high. My bodyworks mate tried to remove the one from the S4 and it almost immediatly broke. I have another mate that removes windscreens for a living and he broke the glass in my 924 as well ( its glued in like the 928 ones ).
Old 01-23-2012, 06:10 PM
  #11  
Mark Anderson
The Parts Whisperer
Rennlist
Site Sponsor

 
Mark Anderson's Avatar
 
Join Date: Nov 2002
Location: Anaheim Ca
Posts: 7,061
Received 367 Likes on 177 Posts
Default

We get about 75% out without damage just using windshield wire.
Old 01-23-2012, 06:26 PM
  #12  
Tom in Austin
Rennlist Member
 
Tom in Austin's Avatar
 
Join Date: Jul 2002
Location: Deep in the Heart of Texas!
Posts: 3,267
Likes: 0
Received 5 Likes on 4 Posts
Default

How about damage to the A-pillar covers and forward edge of the dashboard?
Old 01-23-2012, 06:37 PM
  #13  
jwillman
Rennlist Member
 
jwillman's Avatar
 
Join Date: Jul 2009
Location: Austin, Texas
Posts: 1,895
Received 9 Likes on 8 Posts
Default

Not sure it is applicable here but I pulled my rear hatch glass by using a small 90 degree bend tool pick going under the glass and cutting the sealant. Tools slides along the glass and no worry about the long wire tail chewing up trim. Again I have not tried this on a windshiled. Might have helped that we had real hot weather in Texas to soften the sealant!!
Old 01-23-2012, 07:14 PM
  #14  
LEADASS
Pro
Thread Starter
 
LEADASS's Avatar
 
Join Date: Apr 2009
Location: Topsham Me.
Posts: 540
Likes: 0
Received 5 Likes on 5 Posts
Default

Guys, This is great! Any ideas as to when the adhesives were changed? I understand that earlier cars had a Butyl Goo and that later years had a Polyurethane adhesive. Also that the Poly stuff is more of a PITA to work with. The biggest problem is the weather, here in Maine we are in the midst of a slight seasonal cool down( yesterday -8 at my house). I guess I'll have to heat the garage overnight, or maybe if I run the car with the defroster on high for four hours It'll be gooey enough.
I'll definitely pull the A-pillar trims and even the headliner, I'm hoping that I won't damage the paint but the windshield is more of a priority (i"ll be painting the roof anyway). I'll keep you updated as to my luck, thanks again Brian
Old 01-23-2012, 08:58 PM
  #15  
amschnellsten
Racer
 
amschnellsten's Avatar
 
Join Date: Feb 2005
Location: cincinnati,ohio
Posts: 351
Likes: 0
Received 0 Likes on 0 Posts
Default

I have pulled maybe 50 windshields and have only broken one. I use piano wire and wood dowels. The key is taking your time and making sure it is completely unsealed.


Quick Reply: Windshield removal.What are the odds?



All times are GMT -3. The time now is 08:28 AM.