Where they make the most different is in the upper control arm bushings, closest to the exhaust manifolds/headers... Those are typically subjected to a lot of constant heat, and the rubber tends to bake out/crack, come apart. Whereas the poly is more heat resistant.
Sam
www.socaldakota.com
619-274-1292
>
> From: david.clement@verizon.net
> Date: 2006/02/21 Tue PM 05:01:51 PST
> To: dakota-truck-moderator@bent.twistedbits.net
> Subject: Re: DML: Poly vs Rubber bushings (was: Rear Swaybar Bushings)
>
>
> I can't see how a poly bushing can last longer.
>
> With rubber bushings the inner and outer shells are bonded to each other so
> there is no sliding motion. As long as the rubber is not twisted past it's
> elastic limits they should last all most indefinately and with most vehicles
> never having them changed they certainly have been proven.
>
> The poly bushings slide so if they do not have provisions to be greased they
> will wear out. Definately stiffer and can improve the handling in a lot of
> vehicles but I wouldn't say they will last longer.
>
> Dave Clement
> 99 SLT+ CC 4x4
>
> In article <38087.66.73.245.4.1140535962.squirrel@webmail.omg-stfu.com>,
> josh.lists@omg-stfu.com ("Josh Battles") writes:
> >
> >
> > On Tue, February 21, 2006 12:11 am, jon@dakota-truck.net wrote:
> > >
> > > Speaking of which - does anyone have any opinions on poly vs rubber
> > > bushings in general? The poly is supposed to be stiffer which will
> > > result in better handling and a tighter ride, but I'm hesitant to try
> > > it since I have heard poly can squeak something fierce. I think I'd
> > > give up a little performance in exchange for not drawing the attention
> > > of everyone at the local cruise-in as I pull in the lot going "squeak!
> > > squeak! squeak!" :-) How about bushing durability? Does one wear
> > > quicker than the other?
> >
> > Poly is definately stiffer and will wear longer in most cases. Switching
> > will help eliminate most of the slop in the stock suspension. It is noisy
> > though, I had a complete poly set on my stang and it creaked like crazy in
> > anything less than 40 degree temperatures. If you keep them greased and it's
> > warm out, nobody should be the wiser.
> >
> > --
> > - Josh
> > www.omg-stfu.com
> >
> > This message has been brought to you by the American Kneejerk Coalition for
> > Equality, Compassion, and the Restoration of Karmic Unity of Self And Other
> > Silly Hippy Happy-Swell Gayness Bullshit, or AKCECRKUSAOSHHSGB for short.
> >
> > .
> > .
> > .------------------------------------------------------------------.
> > | Make your plans NOW to attend the National DML Meet in Colorado! |
> > | Date: July 15-23, 2006 - More info: http://meet.dakota-truck.net |
> > `------------------------------------------------------------------'
> >
> .
> .
> .------------------------------------------------------------------.
> | Make your plans NOW to attend the National DML Meet in Colorado! |
> | Date: July 15-23, 2006 - More info: http://meet.dakota-truck.net |
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>
>
.
.
.------------------------------------------------------------------.
| Make your plans NOW to attend the National DML Meet in Colorado! |
| Date: July 15-23, 2006 - More info: http://meet.dakota-truck.net |
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