Polyurethane bushings. Use it or not?
05-31-2010, 07:43 PM
#22
Le Mans Master
05-31-2010, 10:05 PM
#23
Melting Slicks
Used them every where, rear end mount, upper/lower A arms, trailing arms. Can't remember type or brand, maybe from Vette brakes. Lasted about 8-10 years in the trailing arms and have recently failed. Replaced the trailing arm bushing on the driver side after it just came apart. Noticed it when shifting and the rear end feels like it wants to 'fishtail', ie. lateral movement in the rear. The passenger side recently went out. Replaced the first with rubber and will do the same for the passenger side. I believe rubber is used on the new cars including Porches, and new corvettes. I am most disappointed having to redo this job.
The suspension was designed with the compliance of rubber as part of system.
06-01-2010, 02:42 AM
#24
Instructor
Member Since: Feb 2009
Location: Tuscaloosa AL
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Every set of Energy Suspension polygraphites I've bought all came with the tube of grease. That includes mustache bar bushings for my 260Z and control arm and sway bar bushings for my C1500. Whether it's needed or not, I don't know. I used it and don't have any leaks thus far.
EDIT: Squeaks, not leaks.
06-01-2010, 06:57 AM
#25
Le Mans Master
When the engineers designed the suspension system they made it the best they could with what was available at the time. Does that mean that in 40 plus years since there is no possibility of an advancement in technology that could be incorporated into suspension system to make it better?
Rich
06-01-2010, 08:57 AM
#26
Melting Slicks
The suspension was also designed for stock size tires and factory supplied springs. I am sure no one on this forum has modified their cars in any way like cutting the front springs to shorten them so the car sits like they want it to; or putting oversize tires and wheels on the cars with backspacing that is different from the factory design.
When the engineers designed the suspension system they made it the best they could with what was available at the time. Does that mean that in 40 plus years since there is no possibility of an advancement in technology that could be incorporated into suspension system to make it better?
Rich
When the engineers designed the suspension system they made it the best they could with what was available at the time. Does that mean that in 40 plus years since there is no possibility of an advancement in technology that could be incorporated into suspension system to make it better?
Rich
Keeping in mind that one mans "improvement" in handling is another mans complaint about harshness. Another factor is the winter crumbling of my North East roads and budget cuts for repairs, the last thing I want is a stiffer suspension.
06-01-2010, 10:08 AM
#27
When the engineers designed the suspension system they made it the best they could with what was available at the time. Does that mean that in 40 plus years since there is no possibility of an advancement in technology that could be incorporated into suspension system to make it better?
Rich
A question- standard rubber bushings are designed to internally twist under suspension deflection. This twisting action also acts to stiffen the bushing assembly meaning that the amount is misalignment is substantially negated or eliminated.
Who here actually knows which type of bushing allows more misalignment at full deflection- and how much?
