Front LCA, rearward bushing) options? Polyurethane? PSRS?
Aug 21, 2010, 09:17 PM
#17
I have the Perrin PSRS offset bushing and love it so far! Only downfall is that I will can't run my 18x11 wheels without dramatically chopping the front bumper. . .
Ernie, what is it about the aluminum/spherical bearing that you don't like? Possibly too harsh? I think you will be very happy with it. If you are using it on a DD you may want to come up with some sort of dust boot for the bearing, though, just to be on the safe side. (haven't heard of anyone wearing them out yet though).
Another thing to consider is that the front pivot will bind somewhat if you have taken out the stock bushing/bearing and replaced it with a solid poly bushing. Moving the rear of the arm out pulls that bushing off axis a bit. . . no problems so far though, but just to optimize it I am trying to track down an aftermarket sperical bearing solution for the front pivot point.
Ernie, what is it about the aluminum/spherical bearing that you don't like? Possibly too harsh? I think you will be very happy with it. If you are using it on a DD you may want to come up with some sort of dust boot for the bearing, though, just to be on the safe side. (haven't heard of anyone wearing them out yet though).
Another thing to consider is that the front pivot will bind somewhat if you have taken out the stock bushing/bearing and replaced it with a solid poly bushing. Moving the rear of the arm out pulls that bushing off axis a bit. . . no problems so far though, but just to optimize it I am trying to track down an aftermarket sperical bearing solution for the front pivot point.
Aug 21, 2010, 09:58 PM
#18
what do you think about if we either
A)altered the subframe.
B)made some tapered bushings?
I don't want to do something that will drastically increase NVH like the rear diff bushings did...I'm finding a better solution for that at the moment.
Beatrush rear diff bushings for sale! Barely used.
I think I'll do very similar to the PSRS, but do a poly center with a little less give than stock. The plastics professors will be back in session here shortly and I'll be hounding them.
A)altered the subframe.
B)made some tapered bushings?
I don't want to do something that will drastically increase NVH like the rear diff bushings did...I'm finding a better solution for that at the moment.
Beatrush rear diff bushings for sale! Barely used.
I think I'll do very similar to the PSRS, but do a poly center with a little less give than stock. The plastics professors will be back in session here shortly and I'll be hounding them.
Aug 23, 2010, 05:57 AM
#20
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I suspect robi know this, and I HEARD HE ALREADY MAKES HIS VERSION OF THE FRONT BUSHINGS AS WELL, based on cusco pillowball design.
It a shame noones got this far on here yet, and ROBI is quiet
It a shame noones got this far on here yet, and ROBI is quiet
Aug 23, 2010, 07:28 AM
#22
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what do you think about if we either
A)altered the subframe.
B)made some tapered bushings?
I don't want to do something that will drastically increase NVH like the rear diff bushings did...I'm finding a better solution for that at the moment.
Beatrush rear diff bushings for sale! Barely used.
I think I'll do very similar to the PSRS, but do a poly center with a little less give than stock. The plastics professors will be back in session here shortly and I'll be hounding them.
A)altered the subframe.
B)made some tapered bushings?
I don't want to do something that will drastically increase NVH like the rear diff bushings did...I'm finding a better solution for that at the moment.
Beatrush rear diff bushings for sale! Barely used.
I think I'll do very similar to the PSRS, but do a poly center with a little less give than stock. The plastics professors will be back in session here shortly and I'll be hounding them.
One note: I did leave the stock rubber bushing in the front inside of the LCA (the other bushing to mount to the subframe), as the Perrin changes the angle of the LCA enough to where I did not want to force a poly bushing in there. The stock bushing seems to have just enough give in it to allow the relocation of the LCA without excessive strain.
l8r)
Aug 25, 2010, 09:26 AM
#25
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Aug 25, 2010, 10:01 AM
#27
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Ralliart offers a front lower-rear bushing that maintains the spherical bearing but just has a higher durometer rubber bushing surrounding it. It won't give you any extra caster though. They list for about $175/ea and you can get them from http://RalliSpec.com.
Aug 25, 2010, 12:54 PM
#28
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I have the Perrin PSRS offset bushing and love it so far! Only downfall is that I will can't run my 18x11 wheels without dramatically chopping the front bumper. . .
Ernie, what is it about the aluminum/spherical bearing that you don't like? Possibly too harsh? I think you will be very happy with it. If you are using it on a DD you may want to come up with some sort of dust boot for the bearing, though, just to be on the safe side. (haven't heard of anyone wearing them out yet though).
Another thing to consider is that the front pivot will bind somewhat if you have taken out the stock bushing/bearing and replaced it with a solid poly bushing. Moving the rear of the arm out pulls that bushing off axis a bit. . . no problems so far though, but just to optimize it I am trying to track down an aftermarket sperical bearing solution for the front pivot point.
Ernie, what is it about the aluminum/spherical bearing that you don't like? Possibly too harsh? I think you will be very happy with it. If you are using it on a DD you may want to come up with some sort of dust boot for the bearing, though, just to be on the safe side. (haven't heard of anyone wearing them out yet though).
Another thing to consider is that the front pivot will bind somewhat if you have taken out the stock bushing/bearing and replaced it with a solid poly bushing. Moving the rear of the arm out pulls that bushing off axis a bit. . . no problems so far though, but just to optimize it I am trying to track down an aftermarket sperical bearing solution for the front pivot point.
I have found that the car is no more annoying on the highway than it was before the PSRS and that the stability under braking is incredible. One of the best mods I've done so far.
EVOlutionary: If you try any of these spherical bearings, spread the word, I'm not too thrilled about the front poly bushing with the offset PSRS either.
Dec 22, 2010, 12:43 PM
#30
The front bushing is surprisingly thin. I imagine most of the noise goes right through that front bushing either way. I've got a PSRS to put in and will be doing a spherical bearing in the front mounts as well. I think I'm just going to cut grooves into the bore for snap rings though, no need for a clamp shell type setup.