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Old 02-11-2005, 07:38 AM
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Urethane bumper restoration ?

You know how the 70's urethane bumpers get warped and saggy ? Is there anything that can be done to bring one back to new condition if it isn't real bad ? And I'm not sure how bad "real" bad is........ Thanks.

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Old 02-11-2005, 07:50 AM
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I sure hope one of these guys has an answer for you, I want to know myself. I work with these bumpers everyday doing minor repairs, those "waves" are just impossible for me, I hope there is some magic out there.
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Old 02-12-2005, 02:58 PM
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Im wondering the same thing to. The back bumper on my car in sagging in the middle. Not really noticeable from far away but up close it is.
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Old 02-12-2005, 03:43 PM
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If were talking about the same thing - loss of memory
Take the bumper off and send to a bumper recycler or repairer.

They will vat it for 30 minutes in boiling water dolly out anything that did not come out and vat it again for 30 minutes.

The neat thing they doly out dings just like you do metal, same tools.
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Old 02-12-2005, 04:46 PM
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Just wondering how that works. The water softens it up and it goes back to its original shape?
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Old 02-12-2005, 04:56 PM
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Quote:
Originally posted by BarryK
If were talking about the same thing - loss of memory
Take the bumper off and send to a bumper recycler or repairer.

They will vat it for 30 minutes in boiling water dolly out anything that did not come out and vat it again for 30 minutes.

The neat thing they doly out dings just like you do metal, same tools.
Cool, but I lucked out today and found one that was nice and straight, paid dearly for it but it's worth it to me. Thanks.
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Old 02-12-2005, 05:51 PM
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Quote:
Originally posted by segge
Just wondering how that works. The water softens it up and it goes back to its original shape?
Sure does, its neat to see, the bumpers have memory.
I have seen them take a tangled up bumper and put in water for 30 minutes and they only had one spot that they had to dolly out.
Last I herd a few years ago it was about $25 to vat the bumper, this included no other repairs like splits or primering.
For small spots I have used heat lamps with a 50/50 success.
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Old 02-12-2005, 06:11 PM
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BarryK that's great info, I'll file that one for future reference in case my bumper gets out of shape on me. Thanks aagin!!!
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Old 02-12-2005, 06:25 PM
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Barry,very cool. I know I have heated them with a heat gun or heat lamp and hammered and dollied dents out. With the "waves" I have not been very successful.

I do know that hot water is the "holy grail" when it comes to rubber parts. Rubber "gaskets" like around a fuel filler or windows, door seals, anything rubber. It makes it so pliable, you can do just about anything with it. Even if it s hard and ready to crack. Get a big bucket and put the hottest water you can in it and drop the rubber pieces in. I have never had something damaged, it always helps.

So with the bumpers, if you have a tank big enough filled with hot water, it would have to work miracles.
Brian
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Old 02-12-2005, 06:53 PM
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Another question, there are two small holes in the bumper (about 1/4 in across) how would i go about repairing those?

Also on the front there are these vent fin type things that cracked off on one side but are still held on by the other side. Is there a way to fix this as well, some sort of glue or something? Ill get a picture tomorrow, its hard to explain what im talking about exactly.
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Old 02-13-2005, 09:24 PM
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Repair material for problem plastics made by SEM works pretty well on these urethanes.
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