bumper repair

[Kibokojoe]

Just bought a 1991 735i. Do I have to replace the whole front and back end of the car if I have a couple of holes / cracks in the black portion of the front and rear bumpers? I know on my 89 535i you could replace small portion of the bumper

[shogun]

That is basically one part. But you can fix it.
http://bmwe32.masscom.net/johan/bump...r_respray.html
The ultmiate E32 website is this
http://www.bimmerboard.com/forums/e32
all important links are on my website below, like this one
http://www.e38.org/e32/
bumper removal
http://www.bimmerboard.com/forums/posts/210509
I repaired my one with fibre mats, see here
http://www.7-forum.com/forum/5/zerkn...ert-93157.html
you may have to register on the German 7-forum first to see the enlarged pics

[Kibokojoe]

Very good, so fiberglass is the ticket for the spoiler/dam sections but what about the rubber (black) part of the bumper section. I know on my 535i you can remove these sections and replacement with a rubber mallet. Very easy but I don't see anyway of removing these from the 7

[Kibokojoe]

Oh so one part. Same material throughout?

[shogun]

For the rubber/plastic of the bumpers I used a japanese stuff here locally made, just a filler for rubber/bumper material. Nothing special, you probably get it in any of these shops like sears or the other chains.
Here some of the many articles you find in google
http://www.instructables.com/id/Plastic-Bumper-Repair/
http://www.autobodysupply.net/articles.asp?id=135

http://www.lvvservices.com/plasticwelding.htm

the single bumper parts you find here
http://bmwfans.info/

[Kibokojoe]

So since the bumper is all one material just painted different colors,,, should be easy to fix. What is the bumper made of?

[shogun]

I do not know the material. Newer ones:
http://composite.about.com/library/P...blhexcel21.htm
Maybe polypropylene plastic?

http://automotivedigest.blogspot.com...s-for-bmw.html