Poly bushings theory!
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Joined: Feb 2015
Posts: 28
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I just finished swapping all front susp bushings to poly. I was expecting noise and vibes like the motor mounts have on other cars, but there was NO vibrations or weird noises. Everything feels the same, except your car is more responsive when you turn the wheel, especially at speed. Its been only one day though lol took it for like a 5 mile ride down some roads. I think its worth it, only thing is these comp rods do not have a serviceable ball joint, so if i have to replace it id have to press the new bushing from the new rod out.
Joker, she's not installed on the car yet unfortunately. However, I've done plenty of poly swaps on my past cars and have a few rears of racing experience. But poly isn't for everyone. If you don't like to feel the road, stay away from swapping it to all poly. If you replace the key points that have been pointed out to be weak, you'll be very happy.
So I got this theory and want to see if there are any suspension experts that can shine some light on my theory, validate it or disprove it.
Theory is this.
OEM suspension and bushings are designed to take equal or equivalent load for application. Meaning that every bushing is designed to absorb certain amount of load and vibration and to pass on the rest. So if you change the parameter of one bushing (rubber to ply) would that mean that you transfer now more vibration and load to all other bushings that participate as part of the suspension geometry? Causing them to wear out quicker, respond less efficient and so on?
the thought behind it is this. I'm swapping to 5.3 diff and putting poly bushing on it and that got me thinking that now all the extra vibration and load will be transferred to sub frame bushings and cause them to wear out much quicker if they are not worn out already.
What yall think?
Theory is this.
OEM suspension and bushings are designed to take equal or equivalent load for application. Meaning that every bushing is designed to absorb certain amount of load and vibration and to pass on the rest. So if you change the parameter of one bushing (rubber to ply) would that mean that you transfer now more vibration and load to all other bushings that participate as part of the suspension geometry? Causing them to wear out quicker, respond less efficient and so on?
the thought behind it is this. I'm swapping to 5.3 diff and putting poly bushing on it and that got me thinking that now all the extra vibration and load will be transferred to sub frame bushings and cause them to wear out much quicker if they are not worn out already.
What yall think?
Speaking of goo....
Alright changed my pants.
Anyway. Joker, have you done the sway bar end links and bushings? That sounds like the culprit to me, not the differential. Or even a wheel bearing? Slides left and right with load? Doesn't sound like the diff.
Alright changed my pants.
Anyway. Joker, have you done the sway bar end links and bushings? That sounds like the culprit to me, not the differential. Or even a wheel bearing? Slides left and right with load? Doesn't sound like the diff.
I have not done sway bar end links and bushings. I don't see how they can be related to the side movement.
Are you just saying the diff moves under suspension load then? Don't know how you would know that really ha.