urethane suspension bushes or NOT
#1
#2
Join Date: Mar 2008
Location: Pacific Northwest USA
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#3
#4
I have used the urethane on most of mine, BUT, only on the top wishbone, anti-sway "D" rubbers, and the steering rack.
One other here used them on the lower, and was not happy, very harsh, and lasted a very short time, less than 2 years from memory.
I basically considered that the original "metalastic" have lasted near on 20 yeras, so replacements of the same with the same made sense, the lower bushes are a BIG job, and the least time done the better.
The uppers do give a firmer feel, and some do not like it.
The rack bushes do tighten the steering feel considerably, some dont like that either, no idea why, but that floating feel of the originals is not for me.
I tried the urethane on the anti-sway links, NO good, tooooooo firm.
The lubricant you get is "to help get them in", haha, BUT also to lubricate the pivot surface, and YES, they will sqeak if the lube is not applied liberally prior to assembly.
My 2 bobs worth, THINK carefully about the lower bushes, it is a heck of a lot of work to do it again if they dont last. The other areas are really easy by comparison.
One other here used them on the lower, and was not happy, very harsh, and lasted a very short time, less than 2 years from memory.
I basically considered that the original "metalastic" have lasted near on 20 yeras, so replacements of the same with the same made sense, the lower bushes are a BIG job, and the least time done the better.
The uppers do give a firmer feel, and some do not like it.
The rack bushes do tighten the steering feel considerably, some dont like that either, no idea why, but that floating feel of the originals is not for me.
I tried the urethane on the anti-sway links, NO good, tooooooo firm.
The lubricant you get is "to help get them in", haha, BUT also to lubricate the pivot surface, and YES, they will sqeak if the lube is not applied liberally prior to assembly.
My 2 bobs worth, THINK carefully about the lower bushes, it is a heck of a lot of work to do it again if they dont last. The other areas are really easy by comparison.
#5
#6
I have used the urethane on most of mine, BUT, only on the top wishbone, anti-sway "D" rubbers, and the steering rack.
The rack bushes do tighten the steering feel considerably, some dont like that either, no idea why, but that floating feel of the originals is not for me.
The rack bushes do tighten the steering feel considerably, some dont like that either, no idea why, but that floating feel of the originals is not for me.
Oh well, never again.
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#8
Just thought I would post an update.
I installed the front poly bush set (except for the lower fronts, could not budge them), upper control arms and rack. After just completing a 5500km road trip from Perth to Sydney I am very pleased with how the car responded especially the improved steering response. Very exciting drive along the Great Ocean Road (pity about the downed trees and mud slides but thats another story).
Forcedair1 I can understand what you experienced as the steering is now very direct and large steering inputs would have the car on the incorrect side of the road in the blink of an eye. I like this as it makes it much more responsive on the twisty roads.
The only downside is the increased harshness and vibration but I am prepared to live with this as the car is now much more lively.
I installed the front poly bush set (except for the lower fronts, could not budge them), upper control arms and rack. After just completing a 5500km road trip from Perth to Sydney I am very pleased with how the car responded especially the improved steering response. Very exciting drive along the Great Ocean Road (pity about the downed trees and mud slides but thats another story).
Forcedair1 I can understand what you experienced as the steering is now very direct and large steering inputs would have the car on the incorrect side of the road in the blink of an eye. I like this as it makes it much more responsive on the twisty roads.
The only downside is the increased harshness and vibration but I am prepared to live with this as the car is now much more lively.
#9
I had replaced the steering rack bushings on mine with neoprene. The original rubber ones were history. I have read that urethane would disintegrate quickly due to the heat and oils from the engine directly above the rack. So far I am satisfied with the results. I do get some odd movement that I suspect is from worn out rear shocks, so that's my next repair job.
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bar, bushes, bushings, front, jaguar, metalastic, polyurethane, poyurethane, rack, replacing, suspension, sway, urethane, x300, xj40, xk, xtype
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