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rear hatch
I have resealed my hatch twice using the write ups and the proper 3M products and after about 6 months both times the primer paint began to de-laminate from the glass again. Yes I cleaned everything down to bare metal, cleaned and degreased the glass and applied according to instructions. Has anyone used a 2-part epoxy and had any success with it holding? I'm getting tired of tearing it apart. Don't want to try getting a used one because it will eventually do the same thing and new one cost half of what the car is worth. Any ideas?
Thanks, Todd
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Todd Staples |
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02-22-2008, 01:24 PM
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Quality
Join Date: Oct 2007
Location: Philadelphia area and Morristown NJ
Posts: 951
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Never having this problem, you should post some pics. I wonder if you could actually scuff of the surface and THEN use the epoxy, or even drill into whatever it is you are talking about. Pics would help. =)
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85.5 944 NA 5spd - Sold but not forgotten 89 951 Turbo S - Revival in progress...
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02-22-2008, 03:16 PM
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Learned by do'n twice
Join Date: Jul 2007
Location: South Jersey
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944online Tech Info forum has a writeup on page 2 on hatch repair. IIRC the writer uses a silicone glue.
See link below http://www.944online.com/cgi-bin/forum/forum.cgi?board=944tech;action=display;num=1173232 743
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86 944 NA - Brought back from the dead |
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02-23-2008, 06:19 AM
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This is a very common problem with these cars.
I have talked to a large number of people about it. Including a number of glass professionals. The common resonance is it is best to just find a good used one and hope for the best. Repairing your old one will most likely never last. You do not have the proper equipment, nor can you buy the right products to repair it to last very long. Now before everyone gets there pantys in a bunch. Yes, some have had luck repairing theirs. They are the lucky ones. Most people end up just finding a good used one, and being happy with it for many years. I was told that when these cars were new that Porsche would not even repair the defective ones. They would just replace it, and trash the old one. Because the repairs would never last. When I went through this I found a number of good used hatches for a good price. I ended up getting a good one for $100, and have been very happy for over 2 years.
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(Mae) Red '86 944na- gettting new paint soon. (Abby) Black '86 944na- new addition to the family. |
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02-23-2008, 09:08 AM
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Cogito Ergo Sum
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My dad and uncle helped me repair mine (both of them have owned body shops and know what they are doing) it held for about 3 months. Friend of my dads has an auto-glass shop. Took it to him and he cut it completely out of the frame and this has held since april but its starting to come loose on one side so i just unhooked the shocks. Looking for another hatch and im just not gunna hook up the shocks except on show days. The prob is that when it is shut the shocks are pushing the glass towards the back of the car and away from the frams.
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02-24-2008, 09:40 AM
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Join Date: May 2005
Location: Long Island NY
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I feel for the problem you are having I had the same thing. I purchased a used one and had it installed. The used one looked fine for a while and then right by the hinge it started separating again. I so wish some one would come up with a fix for this that we all could use and it would work for a long while. There are many hatchbacks out there and all of them at one time seem like this will happen to them. Good luck with your repair or replacement. I call the Porsche dealer a year ago about mine and they were still available BUT $4000.00
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1993 968- Midnight Blue, Grey interior, tiptronic, 31,000 miles, concours winner, won two more throphies now have 31,489 miles |
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02-24-2008, 12:47 PM
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Join Date: Dec 2005
Location: Riverside, CA
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Anybody ever try this?
Item #190195402984 OR Item #190195402989
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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you... 1994 BMW 325is M-Technic 1986 Porsche 944 N/A Last edited by Dtchy; 02-24-2008 at 02:40 PM.. |
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02-24-2008, 02:37 PM
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Location: Long Island NY
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I contacted this place before buying my used hatchback about 1 year ago. Since the place is right here on LI where I live I thought I could contact the person and maybe bring my car to him for repair. He was not friendly at all would not say where he lived and that he only deals online and would not help me with my car. I didn't like that way of doing business. His idea maybe great but why not want to share the repair technique I would have purchased what ever he said I needed.
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1993 968- Midnight Blue, Grey interior, tiptronic, 31,000 miles, concours winner, won two more throphies now have 31,489 miles |
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02-24-2008, 03:57 PM
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Probably because:
- He then loses his $180 sales (that's probably $50 in parts) plus the story on how to repair will go around the net in no-time. - Or he is just a middle man, doesn't know anything about Porsches, and sells something that doesn't work. Probably the latter.
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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you... 1994 BMW 325is M-Technic 1986 Porsche 944 N/A |
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02-24-2008, 05:17 PM
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Location: Long Island NY
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I agree with the last part. Would be great if this guys repair kit does work though.
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1993 968- Midnight Blue, Grey interior, tiptronic, 31,000 miles, concours winner, won two more throphies now have 31,489 miles |
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02-25-2008, 03:57 PM
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Trying to work for parts!
Join Date: Oct 2006
Location: MO
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From looking at both those ebay auction it looks like it's just a new seal. Both mention the open window exhaust issue, not hatch seperation.
Did I read it incorrectly?
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86 Metallic Grey 85.5 Metallic graphite - Gone |
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02-25-2008, 04:19 PM
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I don't think this guy, or whoever made this kit, knows what they are talking about.
"The paint was applied to cover the glue line imperfections." This one line sets it off for me. The paint was applied to give the glue something to stick to. Glue will not stick to glass for very long unless you give it something to bond to. This special paint was designed to do that very thing. You would be better off going to a glass shop and getting a product called "Glass Bond" It only comes in clear and requires a UV light to cure and bond to the glass. Then use a butyl ( I know I spelled that wrong) tape type caulking. I thought of trying this, although I have no need. My hatch is in great shape. So all of this is just my theory.
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(Mae) Red '86 944na- gettting new paint soon. (Abby) Black '86 944na- new addition to the family. |
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02-25-2008, 04:25 PM
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Quote:
But then, in the same context, he starts talking about the paint on the inside of the glass...  Quote:
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Horsepower is how fast you hit the wall...Torque is how far you take the wall with you... 1994 BMW 325is M-Technic 1986 Porsche 944 N/A |
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02-25-2008, 05:17 PM
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The paint is on the inside of the glass. And was put on before the glue.
And yes I am. It's hard to believe that my car is in such great shape. As it sat outside for over 2 years before I bought it from the 2nd owners daughter, after his death. And after mine someone else can have it. LOL
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(Mae) Red '86 944na- gettting new paint soon. (Abby) Black '86 944na- new addition to the family. |
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02-26-2008, 12:09 AM
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Join Date: Nov 2001
Location: New Orleans, LA
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Todd, did you ever find a solution to the primer delaminating from the glass? Has anyone tried the repair without the primer? Mine is coming loose again
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Carroll '89 S2 |
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01-21-2009, 06:32 PM
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Let's go shooting.
Join Date: Feb 2003
Location: United Kingdom.
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I think this must be a problem suffered mostly in countries that get a lot of sun. The UV rays must break down the glue or something. I've never suffered this problem on any of the five 944's I've owned / own.
I'd have thought, though, that the rear screen would be fixed in the same way as a replacement front screen. Can regular autoglass fitters not perform a permanent repair? If not I'd be tempted to try getting giving the glass surface that the glue is applied to a better key. If it were me I'd mask of the edge of screen with metal strips and sandblast the area the glue needs to stick to. This would etch the glass and give the adhesive something to grip.
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1983 944 Lux (manual) 2.5 litre 8 valve na and no pas 1991 944 (automatic) 2.7 litre 16 valve na and pas "I have only five words for you: From my cold, dead hands." |
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01-22-2009, 04:50 AM
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I was able to find a 2-part glass epoxy, the same stuff they use in the factory with the primer. I have had it on for about a year now and it seems to be holding.
Todd
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Todd Staples |
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01-22-2009, 08:16 AM
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Back from Beyond
Join Date: Nov 2004
Location: Alberta, Canada
Posts: 2,697
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I've fixed a couple of these with auto-parts store black silicone adhesive. They've lasted a couple of years so far. I've just come to terms with the fact that it's regular maintenance.
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'88 944 Auto - project, kinda '87 944 Auto - died saving my wife '84 944 5SP - crushed under shop roof during snow storm All others GONE! |
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01-22-2009, 09:48 AM
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Do you have the name and source of the 2 part epoxy? What procedure did you use? I'm really interested because I am convinced the 3M method just won't work. Mine has been parked under cover both at home and work and the primer still has turned loose. I may try the sand blasting of a strip around the edge. Thanks
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Carroll '89 S2 |
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01-22-2009, 08:33 PM
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hatch
I will have to try to find the information. I don't think you can buy it on the retail market. I had a glass supplier with whom we do a lot of business with where I work contact her rep from this company and explain the situation and he sent her a kit that included everything I needed. Since he didn't charge her for it, she didn't charge me either. But like I said this sealant is what the factory uses to install glass in new vehicles. He told her if it didn't hold, he didn't know of anything else that would work. I did sand the top 1/2" of the glass with a course sand paper before I primed it. Perhaps this also helped.
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Todd Staples |
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01-23-2009, 03:35 AM
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1986 Porsche 944 2.5l
