YET another suspension question.
Thread Starter
Burning Brakes
Joined: Apr 2005
Posts: 1,227
Likes: 0
From: Atlanta Ga
YET another suspension question.
Now that Ive regained my hearing from the air hammer, and now have all my control arms and other parts powder coated and ready to go, im ready to buy my front end kit. What is the advantge/reason to choose the POLY bushings over the normal rubber bushings? Other than cost is there any other advantage to rubber as opposed to the POLY? This car is being built for limited road useage and no hard driving or track
Opinions?
Opinions?
Pro
Joined: Apr 2005
Posts: 603
Likes: 2
From: Illinois, USA
Originally Posted by JustForFun
Now that Ive regained my hearing from the air hammer, and now have all my control arms and other parts powder coated and ready to go, im ready to buy my front end kit. What is the advantge/reason to choose the POLY bushings over the normal rubber bushings? Other than cost is there any other advantage to rubber as opposed to the POLY? This car is being built for limited road useage and no hard driving or track
Opinions?
Opinions?
Poly is also supposed to be firmer than rubber. This means that it's more likely to transmit some of the shock through that the rubber would "absorb".
Poly is probably more resistant to oil/gas/solvent that rubber is.
I bet both choices are fine, but I opted for the poly bushings -- as my rubber ones were decomposing.
Brian.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
i have poly and they are nice and solid.....and very unforgiving over bumps and kind of noisy since there is no compression, however around turns there is no equal
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
deflection
There is a very good reason and it has to do with deflection.
when you are cornering and such the rubber busings will actual get compressed "deflected" and can have a significant effect on the camber of the wheel in truns as well as impact the effect of sway bars for the same reason
the polyeurothane is a much stiffer material and cuts that deflection down considerably as much a 30-40 % if i recall. needless to say this will impact the feel of the car, and help keep the wheels planted firmly on the road. as far as install goes any decent machine shop will press them in for you reletively cheeply 40-60 buks, or you can rent the tool and do it yourself. ( though i dont reccomende the large vice method it can be done.
a step up would be to get the poly graphite bushings with are self lubricating and eliminate the squeeks. i got mine from Perfomance Suspension technologies out of NJ and was thouroughly impressed withthe package. plus ther have excellent service and support.
VBP have the poly bushings but not the polygraphite.
Hope this expalins it for you
tim
when you are cornering and such the rubber busings will actual get compressed "deflected" and can have a significant effect on the camber of the wheel in truns as well as impact the effect of sway bars for the same reason
the polyeurothane is a much stiffer material and cuts that deflection down considerably as much a 30-40 % if i recall. needless to say this will impact the feel of the car, and help keep the wheels planted firmly on the road. as far as install goes any decent machine shop will press them in for you reletively cheeply 40-60 buks, or you can rent the tool and do it yourself. ( though i dont reccomende the large vice method it can be done.
a step up would be to get the poly graphite bushings with are self lubricating and eliminate the squeeks. i got mine from Perfomance Suspension technologies out of NJ and was thouroughly impressed withthe package. plus ther have excellent service and support.
VBP have the poly bushings but not the polygraphite.
Hope this expalins it for you
tim
Last edited by sweethence; Jan 12, 2006 at 04:12 PM.
Pro
Joined: Aug 2004
Posts: 595
Likes: 5
From: Schuylkill County PA
Polygraphite bushings are supposed to have the benefits of polyurethane without the associated noise. www.p-s-t.com sells sets for many American muscle cars, but I don't know about their Corvette offerings.
For basic road usage though it sounds like OEM rubber would be a good choice. Just replacing old, worn out parts should make a noticable difference.
Edit: sweethence, we must have been typing at the same time
For basic road usage though it sounds like OEM rubber would be a good choice. Just replacing old, worn out parts should make a noticable difference.
Edit: sweethence, we must have been typing at the same time
Last edited by PSU 98; Jan 12, 2006 at 05:46 PM.
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Safety Car
Joined: Jun 2002
Posts: 3,689
Likes: 1
From: St Petersburg FL
St. Jude Donor '07,'13
Vbp Poly Bushings
Hi Guys, it's Pattie from VBP. I was reading the post and had to chime in.
Our poly bushings are impregnated with graphite and are basically self lubricating. We do supply a tube of lube with the kits or recommend marine grease (waterproof) for a little lube if you do encounter the infamous squeak.
Our poly bushings are impregnated with graphite and are basically self lubricating. We do supply a tube of lube with the kits or recommend marine grease (waterproof) for a little lube if you do encounter the infamous squeak.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
the noise i'm talking about isn't the bushing squeaking its the entire suspension being bounced around with no deflection....and the noise is worth the handling benefit
.