For those who have done poly bushings
07-09-2019, 11:14 PM
#1
Racer
Thread Starter
For those who have done poly bushings
Question. I replaced all bushings with poly. The car is not on the road yet but just pulling it in and out of my garage and the quick trip up and down the block, I hear creeking sounds coming from the rear and slightly from the front. And before anybody asks, yes I lubed the hell out of the bushings. Am I to assume that they are making this sound because they are new and they just need to wear in a little? What have been your experiences?
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AudioObsessions (07-09-2019)
07-09-2019, 11:38 PM
#3
Racer
Thread Starter
It's funny because it only does it for the first minute or so. By the time I make it to the end of the block and turn around and come back and I'm pulling back into my garage I no longer hear it. So I'm assuming it's just doing it because it's been sitting there for a few days and because the bushings are new. I'm hoping once I get it out on the road and drive it back and forth to work a couple of times that I will no longer hear the sound.
07-10-2019, 12:17 AM
#4
Team Owner
Member Since: Sep 2003
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St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
Hopefully youre installation did not place the bushings in a bind.
Never hurts to use a few shots of silicone spray to those points that might be suspect.
Never hurts to use a few shots of silicone spray to those points that might be suspect.
07-10-2019, 08:09 AM
#5
Le Mans Master
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Did you tighten the bolts with the suspension parts at ride height? IOW, not hanging, but supported with a jack/jack stand to simulate ride height.... I think thats in the FSM
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vettespecial (07-11-2019)
07-10-2019, 08:50 AM
#6
Le Mans Master
That is important for the stock rubber bushings, in which the rubber is bonded to the inner and outer sleeves. However, for poly bushings it doesn't matter because the inner sleeves are not bonded to the bushing material. They have zero torsional preload at any point of rotation.
Last edited by MatthewMiller; 07-10-2019 at 08:50 AM.
07-10-2019, 01:05 PM
#7
Melting Slicks
when I install polys I grease everything, the bushings, the shells they go into, the sleeves that go inside the bushings, the bolts that go inside the sleeves, the brackets on the body that the whole assembly goes into, everything. no squeaks
Last edited by mtwoolford; 07-10-2019 at 01:05 PM.
07-10-2019, 09:25 PM
#9
Racer
Thread Starter
07-10-2019, 09:59 PM
#10
Le Mans Master
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That is important for the stock rubber bushings, in which the rubber is bonded to the inner and outer sleeves. However, for poly bushings it doesn't matter because the inner sleeves are not bonded to the bushing material. They have zero torsional preload at any point of rotation.
07-11-2019, 01:33 AM
#11
Melting Slicks
I replaced the bushings in my 84 with Poly bushings. I have had no squeaks. I also lubed all parts above what was provided with the kits.
07-11-2019, 01:47 PM
#12
Instructor
Bushings
I to used prothane bushings replaced every bushing front and rear no squeaks yet, the ZR 1 guy in addison Illinois told me Last week that they start getting noisy at about 7,000 miles. Also a tech rep at prothane informed me to tighten front bushings at ride height, which I did. Only thing I hate is the harsh ride down semi rough roads.