poly bushings disintegrating
Team Owner
Joined: May 2001
Posts: 87,375
Likes: 1,593
From: Western NY
No, he's saying that there are poly bushings available that have inner sleeves with serrated ENDS, similar to the OE rubber bushings. The serrations "lock on" to the flat washers that are installed to retain the bushings, and the bolts, in turn, lock up against the washers.
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
No, he's saying that there are poly bushings available that have inner sleeves with serrated ENDS, similar to the OE rubber bushings. The serrations "lock on" to the flat washers that are installed to retain the bushings, and the bolts, in turn, lock up against the washers.
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
No, he's saying that there are poly bushings available that have inner sleeves with serrated ENDS, similar to the OE rubber bushings. The serrations "lock on" to the flat washers that are installed to retain the bushings, and the bolts, in turn, lock up against the washers.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
I used to work for the Department of Energy on defense projects. Polyurethane does indeed have a life expectancy some of it as low as 10-15 years. I would tend to agree that the OEM rubber bushings are pretty decent pieces although some of the currently available parts made overseas aren't up to OEM standards.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Actually the rubber bonding the inner/outer sleeves together twists in motion between the 2 sleeves in an OEM bushing. That is the reason why you should only do final torquing of control arm bushings when the car is resting at finished ride height. If you torque the bushings at full suspension drop you will prematurely wear them out through excessive twisting of the rubber.
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Actually the rubber bonding the inner/outer sleeves together twists in motion between the 2 sleeves in an OEM bushing. That is the reason why you should only do final torquing of control arm bushings when the car is resting at finished ride height. If you torque the bushings at full suspension drop you will prematurely wear them out through excessive twisting of the rubber.
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Drifting
Joined: Aug 2009
Posts: 1,635
Likes: 8
From: Enid Oklahoma
81pilot...
It is good to know that your are the "one and only" purveyor of TRUTH! I've been looking for "the omnipotent ONE" for many years; I can finally relax and know that you have all the answers and that I should no longer be concerned about the ramblings of anyone else.
But, contrary to your misguided belief, there are MANY synthetic rubber compounds [to my knowledge, NO ONE sells a 100% rubber product for anything these days] that can last and function well for 20 years OR MUCH MORE. Now, whether you can find a good quality product or not is an entirely different issue. But, many C3's which have been used in the 'more friendly' environments in the US have body mounts that survived 20-30 years with no real functional problem. They might have been ugly
and somewhat cracked on the outside, but they worked just fine.
Many military applications require materials that see much more difficult service and environments and, by contract, must be servicible for more than 20 years.
Would I recommend to anyone on this Forum that a good quality body mount would last 20 years? Sure....because I'll be dead before that 20 years is up!!
P.S. If its a polymer or synthetic rubber product made in China...it's doubtful that it will last even a reasonable period of time. There is even significant risk that it's not even made out of the material claimed.
It is good to know that your are the "one and only" purveyor of TRUTH! I've been looking for "the omnipotent ONE" for many years; I can finally relax and know that you have all the answers and that I should no longer be concerned about the ramblings of anyone else.
But, contrary to your misguided belief, there are MANY synthetic rubber compounds [to my knowledge, NO ONE sells a 100% rubber product for anything these days] that can last and function well for 20 years OR MUCH MORE. Now, whether you can find a good quality product or not is an entirely different issue. But, many C3's which have been used in the 'more friendly' environments in the US have body mounts that survived 20-30 years with no real functional problem. They might have been ugly
and somewhat cracked on the outside, but they worked just fine.Many military applications require materials that see much more difficult service and environments and, by contract, must be servicible for more than 20 years.
Would I recommend to anyone on this Forum that a good quality body mount would last 20 years? Sure....because I'll be dead before that 20 years is up!!
P.S. If its a polymer or synthetic rubber product made in China...it's doubtful that it will last even a reasonable period of time. There is even significant risk that it's not even made out of the material claimed.
