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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 09-12-2013, 05:53 PM
M ROADSTER GUY M ROADSTER GUY is offline
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Z3 M Seat belt guide repair

I recently broke the seat belt guide attached to the rt. seat of my 98 Z3 M Roadster. I was aware that they are prone to failure and difficult to repair and or replace. I did try glue which generally works on plastic to no avail. I also purchased an OEM replacement part but after reviewing the difficulty of installation put that on hold. Two days ago, I read an ad for a space age glue that sounded promising. I used it today and couldn't be more pleased with the results. The glue sets up quickly and the joint appears strong if not stronger than the adjacent material. The glue is SI Blue from Tech Bond and it is identified as a "molecular bonding system". I purchased the glue from Dymond Modelsport USA [www.dymondusa.com], who offer a varirty of products mostly devoted to the radio contol hobby. I hope this info is helpful to others.
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  #2  
Old 09-12-2013, 07:23 PM
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vintage42 vintage42 is online now
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I sure saved this info. My guides have not broken, and are not likely to break now with the velcro bands around them. But this is the first practical repair that I have seen, just in case.

Last edited by vintage42; 09-13-2013 at 04:54 AM.
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  #3  
Old 09-12-2013, 08:30 PM
Blacklane Blacklane is offline
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Can you post a picture of the repair?
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  #4  
Old 09-13-2013, 09:50 AM
M ROADSTER GUY M ROADSTER GUY is offline
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Frankly, the repair left no visual imprint. As you are likely aware, the break usually occurs in the solid piece which attaches to the seat back and the break is generally obscured by the two somewhat overlapping pieces that form the seat belt guide. Seen from any angle there is no visual evidence of the repair and therefore a photo would not be helpful.
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  #5  
Old 09-13-2013, 07:26 PM
marty505 marty505 is offline
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I ordered some SI Blue just to have it around. A super glue that actually works sounds like a good thing.
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  #6  
Old 09-13-2013, 07:48 PM
postalZ3 postalZ3 is offline
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Quote:
Originally Posted by marty505 View Post
I ordered some SI Blue just to have it around. A super glue that actually works sounds like a good thing.
Where from? Can't find in the dymondusa site
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  #7  
Old 09-13-2013, 08:10 PM
marty505 marty505 is offline
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http://dymondusa.com/category/ADH0/Adhesives/1.html
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  #8  
Old 09-13-2013, 11:19 PM
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Bucko521 Bucko521 is offline
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Thanks for the heads up on this glue.
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  #9  
Old 09-14-2013, 09:33 AM
M ROADSTER GUY M ROADSTER GUY is offline
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Dymondusa web site

Since I had noticed the ad for SI Blue by Tech Bond in a radio control mag and then contacted Dymondusa via phone for more detailed info, I hadn't used their website to place my order. I did check their web site to assure the product was listed [along with a host of other Tech Bond offerings] and found it under "adhesives'. By the way a 1oz. bottle is more than ample for most applications and has a long shelf life when kept refrigerated after opening.

If any other questions arise I will try to respond, and for the record, I have no personal interest in Dymondusa but have found them a reliable and responsive vendor in the past.
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  #10  
Old 09-18-2013, 04:51 PM
AB1945 AB1945 is offline
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I did a quick fix of the seatbelt guide using Velcro. Bought a 4" wide piece from http://www.ebay.com/itm/170995024591...84.m1497.l2649

It does the job. I had to trim it down a bit and push it to the top of the guide. If it goes to the bottom of the guide it will stop the belt from retracting.
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  #11  
Old 09-18-2013, 06:09 PM
M ROADSTER GUY M ROADSTER GUY is offline
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I had initially repaired my broken guide in a similar fashion but thought I would give the glue from Hi Tech a try, as it seemed a neat and secure glue joint would be a more permanent solution.
Frankly, it took less than a minute or two to apply, and for the glue to set up, and the result was truly surprising. You may want to consider the same at some point, particularly if you decide to sell the car.
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  #12  
Old 10-15-2013, 02:31 PM
CTHuskyinMA CTHuskyinMA is offline
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Curious to know how this glue is holding up? My seatbelt guides are in pieces and I'm trying to avoid the "real" repair of removing the seat skins.
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  #13  
Old 10-15-2013, 06:38 PM
M ROADSTER GUY M ROADSTER GUY is offline
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I am pleased to report that the seat belt guide repair using the Tech Bond glue appears to be holding up particularly well. The glued break in the guide shows no sign of weakening and I'm optimistic that the problem is solved. Since making the repair, I've used the same glue in other applications involving plastic materials with equally impressive results.

You mentioned having a number of breaks in your guide which might make it more difficult to achieve a strong and neat repair. I would suggest laying a strip of fiberglass cloth across the joints to strengthen them although that would require sanding or otherwise smoothing the repair to avoid abrading the belt. Just some thoughts for your consideration!
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  #14  
Old 03-28-2014, 09:39 AM
SounderMN SounderMN is offline
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I know this is an old thread, but a great solution to a common problem. Thanks for sharing! I've ordered some of this glue. I'll post back when I get it and see how it works. If it works, it's awesome! I looked at 8 or 10 different cars before I bought the one I have. All had the same problem, so it's quite common.
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  #15  
Old 03-28-2014, 10:19 AM
Wertles Wertles is offline
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It is not hard at all to replace the guides. First seat took an hour. Second 45 minutes. By the time you do the "repair," you could have done the job the right way and not have to worry about it. At least until the new plastic gets old. Use this thread.

http://forums.bimmerforums.com/forum...at-belt-guides

Also a good time for the seat tilt mod and bushing replacement.

http://www.bimmerdiffs.com/collections/z3-products
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Last edited by Wertles; 03-28-2014 at 10:22 AM.
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  #16  
Old 04-07-2014, 11:56 AM
someguy1313 someguy1313 is offline
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i'll give that a shot. thanks.
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  #17  
Old 04-22-2014, 07:21 PM
gpong gpong is offline
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After seeing this post a few weeks ago, I bought some of this stuff. It worked great!! I had went the super glue, velcro and heat shrink route and nothing held for long. But with this, so far, I'm very impressed,
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  #18  
Old 04-22-2014, 08:55 PM
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Quote:
Originally Posted by gpong View Post
After seeing this post a few weeks ago, I bought some of this stuff. It worked great!! I had went the super glue, velcro and heat shrink route and nothing held for long. But with this, so far, I'm very impressed,
When you say this 'stuff' works... which are you referring?

I have a broken on the drivers side I hope to 'fix' rather than replace at the moment.

Thanks..
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  #19  
Old 04-22-2014, 09:15 PM
gpong gpong is offline
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Si blue
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  #20  
Old 04-23-2014, 05:51 PM
bimmerstu bimmerstu is offline
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"temp" fix

just got my Z3 a month ago and both guides were missing completely. But . . . inside the holes in the seat leather I could see the plastic anchors and their respective holes. So . . . using the accursed super glue I cut two pieces of 1/2 wide nylon strapping and with SS screws. a drop of super glue and molding washers attached them to the seat sides. works for now.[IMG][/IMG]
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  #21  
Old 05-05-2014, 07:23 PM
Joe422 Joe422 is offline
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Nice... hope that fix is long term!

Just FYI, if you actually remove the leather seat covers to change out the guide for a new one... in re-assembly, ZIP TIES make it incredibly easy to complete *(instead of metal hog rings).
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  #22  
Old 05-05-2014, 08:50 PM
cd619 cd619 is offline
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PlasticWeld

Had good luck using JB PlasticWeld after the bottom half of mine broke off completely. The only issue is that it dries gray. The belt masks the gray.

A guy in South Africa sells these: http://s1194.photobucket.com/user/Bu...M0924.jpg.html

Going to give it a shot to see if they keep them from breaking.
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  #23  
Old 05-06-2014, 06:53 AM
SounderMN SounderMN is offline
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Quote:
Originally Posted by Joe422 View Post
Nice... hope that fix is long term!

Just FYI, if you actually remove the leather seat covers to change out the guide for a new one... in re-assembly, ZIP TIES make it incredibly easy to complete *(instead of metal hog rings).
For those who have used zip ties to attach seat material, does it hold up? I can see how it would be much much easier to use. But, do they last over time? At least with hog rings, we know they'll last for a very long time. I just took the covers off my seats, made in 99, and they were still quite strong. When I do my recovering project in a few weeks, I may try the zip tie method.
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  #24  
Old 05-06-2014, 10:38 AM
Joe422 Joe422 is offline
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For peace of mind, I used "industrial" 3M zip ties, not the Harbor Freight ones.
The quality ones are UV resistant and rated for 50 to 80 lbs tensile strength and -40* to 180*F.

I doubt the underside of the seat leathers reach those temps regularly, and if they do, the zip ties may be the least of your worries.

I also noticed, when reassembling the covers, the leather to frame attachment actually requires very little tension. Nothing out of the range of Zip Tie duty.

It's only been 2 yrs since my seats covers were zip tied, and so far no problem.
Not to mention if I ever have to remove the covers again, it'll be even easier.
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  #25  
Old 05-06-2014, 11:52 AM
SounderMN SounderMN is offline
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Perfect! That's exactly the answer I was looking for! Those are good specs to use as a benchmark. Thanks!
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