Just installed the Ultimate Steering Response System (USRS) from RR-Racing.
#151
Does anyone else have any noises coming from these while going slowly over uneven pavement? Sounds like a creak, almost like a loose fender liner or something (but that is not the issue). Doesn't feel like anything is loose. Not really sure what is causing this. The noises seem to get quieter after a few minutes of driving. It is as it's worst when I first start driving in the morning. Maybe a lube issue?
#152
Superpro makes a special polyurethane compatible grease for poly bushings:
http://www.superpro.com.au/tradeview...ctnr=WPCARTSIL
It's easy to put on, and sticky as all get out. I have zero noise from my bushings with this grease.
http://www.superpro.com.au/tradeview...ctnr=WPCARTSIL
It's easy to put on, and sticky as all get out. I have zero noise from my bushings with this grease.
#153
Just adding my $.02. I installed the bushings last Saturday in front of my house on jack stands with a friend.
Install was straight forward. I only ran into 2 problems. 1. One of the 150ft/lb bolts had been put on with an airgun and was nearly impossible to remove (the car car from teh factory with a drift to the right and required a subframe shift to straighten out, thanks dealer). 2. One of the OEM bushings was "fused" to the LCA spindle and took some real coaxing to remove. Other than those 2 issues the install was really quite easy with the right tools. Pre-load was easy to set with a feeler gauge.
Driving impressions:
Braking: Immediate noticeable benefit at any speed is the improvement in braking. The car retains it's proper alignment and just stops nice and straight or stable in a turn. Really worth the price of admission right there.
Handling: turn in is sharp and crisp and the car sets for a turn very quickly and holds its line in long sweepers. Bump steer is noticeably reduced mid corner.Transitions are smooth and predictable. Mid corner adjustments are also very controllable.
NVH: First I am shocked at how much the change of one single bushing has on the vehicle. I am really surprised that so much weight seems to be constantly held by this bushing as opposed to the spring/shock assembly. I think it is a little bit of a mistake by Lexus to have so much NVH isolated by a single bushing that can be affected by steering input and breaking instead of a more rigid platform that is isolated at the sub-frame/unit-body interface. Anyway. Road feel is definitely increased in a good way. Noise: is slightly increased but a negligible issue that is nonexistent at at highway speeds. Vibration: on less than idea roads (the majority of roads in California) there is vibration transferred to the cabin in the form of the dash making a few creaks and complaints. I'll learn to live with it. Harshness: I do find that running over the "dots" in the road, manholes, potholes, etc are a little bit harsher than I would have preferred. I will get used to this as well, but for me, I am definitely aware that I have lost some of the refinement the car had before in ride quality. I have heard NO noise whatsoever from the bushing it's self, squeaking, clunking, etc. I used a lot of grease, used copper anti-seize on all bolts and torqued to specified levels. I will check them all again in a week or two.
Further observations: NVH: my car is a Feb. 2008 delivery, with a very low VIN (000284). If I recall correctly '08-'09 had a firmer suspension, later changed to a more compliant one for '10 and later (However providing more traction from '10 on). Perhaps the shocks are transmitting more vibration than will be found in later model cars.
I have the rear F-Sport swaybar installed and feel that the USRS is extremely complimentary. The amount of improvement is about on par. It almost feels like a bigger swaybar was added to the front of the car with out actually having to tie the left and right side of the front suspension together! Very nice. Car seems much more neutral now.
While the USRS is shipped with a 95 durometer bushing, I would be very curious to know what a 92 or 90 would feel like. Perhaps a "sport" and "race" versions should be available?
Open Questions:
1. I'd love to know if there is actually any merit to my hypothesis that the early cars (08-09) respond to this mod with slightly more NVH than the later cars.
2. with the added strain transmitted to the unit-body by the more rigid bushings, would it be an improvement, benefit or reduce NVH by adding either a tie bar under the subframe like this: http://gtspec.com/product/gtspec-fro...-is250is350isf
OR something across the top to isolate the dash vibrations
http://gtspec.com/product/gtspec-fro...is250is350is-f
Thanks for reading and any shared input!
Andy
Install was straight forward. I only ran into 2 problems. 1. One of the 150ft/lb bolts had been put on with an airgun and was nearly impossible to remove (the car car from teh factory with a drift to the right and required a subframe shift to straighten out, thanks dealer). 2. One of the OEM bushings was "fused" to the LCA spindle and took some real coaxing to remove. Other than those 2 issues the install was really quite easy with the right tools. Pre-load was easy to set with a feeler gauge.
Driving impressions:
Braking: Immediate noticeable benefit at any speed is the improvement in braking. The car retains it's proper alignment and just stops nice and straight or stable in a turn. Really worth the price of admission right there.
Handling: turn in is sharp and crisp and the car sets for a turn very quickly and holds its line in long sweepers. Bump steer is noticeably reduced mid corner.Transitions are smooth and predictable. Mid corner adjustments are also very controllable.
NVH: First I am shocked at how much the change of one single bushing has on the vehicle. I am really surprised that so much weight seems to be constantly held by this bushing as opposed to the spring/shock assembly. I think it is a little bit of a mistake by Lexus to have so much NVH isolated by a single bushing that can be affected by steering input and breaking instead of a more rigid platform that is isolated at the sub-frame/unit-body interface. Anyway. Road feel is definitely increased in a good way. Noise: is slightly increased but a negligible issue that is nonexistent at at highway speeds. Vibration: on less than idea roads (the majority of roads in California) there is vibration transferred to the cabin in the form of the dash making a few creaks and complaints. I'll learn to live with it. Harshness: I do find that running over the "dots" in the road, manholes, potholes, etc are a little bit harsher than I would have preferred. I will get used to this as well, but for me, I am definitely aware that I have lost some of the refinement the car had before in ride quality. I have heard NO noise whatsoever from the bushing it's self, squeaking, clunking, etc. I used a lot of grease, used copper anti-seize on all bolts and torqued to specified levels. I will check them all again in a week or two.
Further observations: NVH: my car is a Feb. 2008 delivery, with a very low VIN (000284). If I recall correctly '08-'09 had a firmer suspension, later changed to a more compliant one for '10 and later (However providing more traction from '10 on). Perhaps the shocks are transmitting more vibration than will be found in later model cars.
I have the rear F-Sport swaybar installed and feel that the USRS is extremely complimentary. The amount of improvement is about on par. It almost feels like a bigger swaybar was added to the front of the car with out actually having to tie the left and right side of the front suspension together! Very nice. Car seems much more neutral now.
While the USRS is shipped with a 95 durometer bushing, I would be very curious to know what a 92 or 90 would feel like. Perhaps a "sport" and "race" versions should be available?
Open Questions:
1. I'd love to know if there is actually any merit to my hypothesis that the early cars (08-09) respond to this mod with slightly more NVH than the later cars.
2. with the added strain transmitted to the unit-body by the more rigid bushings, would it be an improvement, benefit or reduce NVH by adding either a tie bar under the subframe like this: http://gtspec.com/product/gtspec-fro...-is250is350isf
OR something across the top to isolate the dash vibrations
http://gtspec.com/product/gtspec-fro...is250is350is-f
Thanks for reading and any shared input!
Andy
Last edited by UCrazyKid; 08-26-15 at 10:59 AM. Reason: Added some more detail.
#155
#157
i will say I didn't notice any noises until after three weeks or so. After that, definitely makes noises over slow bumps. I'll be ordering some good lube and re greasing them when I install my headers next month. Hopefully that takes care of it.
#158
I bought into the Hype and bought the USRS Bushings. All I can say is it's all TRUE I'm not going to waste everyones time and reiterate what the members have said in prior posts, but again, it's true. Glad I did this, but:
I don't recommend installing them on ramps as I did. There simply isn't enough room to maneuver and get a good grip on the wrenches and etc. Also the removal process using the pry bar is a two man job, thought I could do it alone. Same with slipping the new bushing in place with the pry bar.
Maybe it was the heat, I'm in a burb of Phoenix, maybe it was my age, I'm 76, or just maybe it was the ramps, but I found this job a lot harder than other members.
Also, one warning - The inner, smaller bolt that holds the bushing housing in place doesn't thread into the housing like the larger bolt does. That bolt threads into a nut with a shoulder that is on top of the of the housing. This nut can be lost if you don't know it's there - AMHIK.
Lou
I don't recommend installing them on ramps as I did. There simply isn't enough room to maneuver and get a good grip on the wrenches and etc. Also the removal process using the pry bar is a two man job, thought I could do it alone. Same with slipping the new bushing in place with the pry bar.
Maybe it was the heat, I'm in a burb of Phoenix, maybe it was my age, I'm 76, or just maybe it was the ramps, but I found this job a lot harder than other members.
Also, one warning - The inner, smaller bolt that holds the bushing housing in place doesn't thread into the housing like the larger bolt does. That bolt threads into a nut with a shoulder that is on top of the of the housing. This nut can be lost if you don't know it's there - AMHIK.
Lou
Last edited by flowrider; 08-27-15 at 07:17 PM.
#160
I bought into the Hype and bought the USRS Bushings. All I can say is it's all TRUE I'm not going to waste everyones time and reiterate what the members have said in prior posts, but again, it's true. Glad I did this, but:
I don't recommend installing them on ramps as I did. There simply isn't enough room to maneuver and get a good grip on the wrenches and etc. Also the removal process using the pry bar is a two man job, thought I could do it alone. Same with slipping the new bushing in place with the pry bar.
Maybe it was the heat, I'm in a burb of Phoenix, maybe it was my age, I'm 76, or just maybe it was the ramps, but I found this job a lot harder than other members.
Also, one warning - The inner, smaller bolt that holds the bushing housing in place doesn't thread into the housing like the larger bolt does. That bolt threads into a nut with a shoulder that is on top of the of the housing. This nut can be lost if you don't know it's there - AMHIK.
Lou
I don't recommend installing them on ramps as I did. There simply isn't enough room to maneuver and get a good grip on the wrenches and etc. Also the removal process using the pry bar is a two man job, thought I could do it alone. Same with slipping the new bushing in place with the pry bar.
Maybe it was the heat, I'm in a burb of Phoenix, maybe it was my age, I'm 76, or just maybe it was the ramps, but I found this job a lot harder than other members.
Also, one warning - The inner, smaller bolt that holds the bushing housing in place doesn't thread into the housing like the larger bolt does. That bolt threads into a nut with a shoulder that is on top of the of the housing. This nut can be lost if you don't know it's there - AMHIK.
Lou
#161
I don't recommend installing them on ramps as I did. There simply isn't enough room to maneuver and get a good grip on the wrenches and etc. Also the removal process using the pry bar is a two man job, thought I could do it alone. Same with slipping the new bushing in place with the pry bar.
-Mike
#162
Just adding my $.02. I installed the bushings last Saturday in front of my house on jack stands with a friend.
Install was straight forward. I only ran into 2 problems. 1. One of the 150ft/lb bolts had been put on with an airgun and was nearly impossible to remove (the car car from teh factory with a drift to the right and required a subframe shift to straighten out, thanks dealer). 2. One of the OEM bushings was "fused" to the LCA spindle and took some real coaxing to remove. Other than those 2 issues the install was really quite easy with the right tools. Pre-load was easy to set with a feeler gauge.
Driving impressions:
Braking: Immediate noticeable benefit at any speed is the improvement in braking. The car retains it's proper alignment and just stops nice and straight or stable in a turn. Really worth the price of admission right there.
Handling: turn in is sharp and crisp and the car sets for a turn very quickly and holds its line in long sweepers. Bump steer is noticeably reduced mid corner.Transitions are smooth and predictable. Mid corner adjustments are also very controllable.
NVH: First I am shocked at how much the change of one single bushing has on the vehicle. I am really surprised that so much weight seems to be constantly held by this bushing as opposed to the spring/shock assembly. I think it is a little bit of a mistake by Lexus to have so much NVH isolated by a single bushing that can be affected by steering input and breaking instead of a more rigid platform that is isolated at the sub-frame/unit-body interface. Anyway. Road feel is definitely increased in a good way. Noise: is slightly increased but a negligible issue that is nonexistent at at highway speeds. Vibration: on less than idea roads (the majority of roads in California) there is vibration transferred to the cabin in the form of the dash making a few creaks and complaints. I'll learn to live with it. Harshness: I do find that running over the "dots" in the road, manholes, potholes, etc are a little bit harsher than I would have preferred. I will get used to this as well, but for me, I am definitely aware that I have lost some of the refinement the car had before in ride quality. I have heard NO noise whatsoever from the bushing it's self, squeaking, clunking, etc. I used a lot of grease, used copper anti-seize on all bolts and torqued to specified levels. I will check them all again in a week or two.
Further observations: NVH: my car is a Feb. 2008 delivery, with a very low VIN (000284). If I recall correctly '08-'09 had a firmer suspension, later changed to a more compliant one for '10 and later (However providing more traction from '10 on). Perhaps the shocks are transmitting more vibration than will be found in later model cars.
I have the rear F-Sport swaybar installed and feel that the USRS is extremely complimentary. The amount of improvement is about on par. It almost feels like a bigger swaybar was added to the front of the car with out actually having to tie the left and right side of the front suspension together! Very nice. Car seems much more neutral now.
While the USRS is shipped with a 95 durometer bushing, I would be very curious to know what a 92 or 90 would feel like. Perhaps a "sport" and "race" versions should be available?
Open Questions:
1. I'd love to know if there is actually any merit to my hypothesis that the early cars (08-09) respond to this mod with slightly more NVH than the later cars.
2. with the added strain transmitted to the unit-body by the more rigid bushings, would it be an improvement, benefit or reduce NVH by adding either a tie bar under the subframe like this: http://gtspec.com/product/gtspec-fro...-is250is350isf
OR something across the top to isolate the dash vibrations
http://gtspec.com/product/gtspec-fro...is250is350is-f
Thanks for reading and any shared input!
Andy
Install was straight forward. I only ran into 2 problems. 1. One of the 150ft/lb bolts had been put on with an airgun and was nearly impossible to remove (the car car from teh factory with a drift to the right and required a subframe shift to straighten out, thanks dealer). 2. One of the OEM bushings was "fused" to the LCA spindle and took some real coaxing to remove. Other than those 2 issues the install was really quite easy with the right tools. Pre-load was easy to set with a feeler gauge.
Driving impressions:
Braking: Immediate noticeable benefit at any speed is the improvement in braking. The car retains it's proper alignment and just stops nice and straight or stable in a turn. Really worth the price of admission right there.
Handling: turn in is sharp and crisp and the car sets for a turn very quickly and holds its line in long sweepers. Bump steer is noticeably reduced mid corner.Transitions are smooth and predictable. Mid corner adjustments are also very controllable.
NVH: First I am shocked at how much the change of one single bushing has on the vehicle. I am really surprised that so much weight seems to be constantly held by this bushing as opposed to the spring/shock assembly. I think it is a little bit of a mistake by Lexus to have so much NVH isolated by a single bushing that can be affected by steering input and breaking instead of a more rigid platform that is isolated at the sub-frame/unit-body interface. Anyway. Road feel is definitely increased in a good way. Noise: is slightly increased but a negligible issue that is nonexistent at at highway speeds. Vibration: on less than idea roads (the majority of roads in California) there is vibration transferred to the cabin in the form of the dash making a few creaks and complaints. I'll learn to live with it. Harshness: I do find that running over the "dots" in the road, manholes, potholes, etc are a little bit harsher than I would have preferred. I will get used to this as well, but for me, I am definitely aware that I have lost some of the refinement the car had before in ride quality. I have heard NO noise whatsoever from the bushing it's self, squeaking, clunking, etc. I used a lot of grease, used copper anti-seize on all bolts and torqued to specified levels. I will check them all again in a week or two.
Further observations: NVH: my car is a Feb. 2008 delivery, with a very low VIN (000284). If I recall correctly '08-'09 had a firmer suspension, later changed to a more compliant one for '10 and later (However providing more traction from '10 on). Perhaps the shocks are transmitting more vibration than will be found in later model cars.
I have the rear F-Sport swaybar installed and feel that the USRS is extremely complimentary. The amount of improvement is about on par. It almost feels like a bigger swaybar was added to the front of the car with out actually having to tie the left and right side of the front suspension together! Very nice. Car seems much more neutral now.
While the USRS is shipped with a 95 durometer bushing, I would be very curious to know what a 92 or 90 would feel like. Perhaps a "sport" and "race" versions should be available?
Open Questions:
1. I'd love to know if there is actually any merit to my hypothesis that the early cars (08-09) respond to this mod with slightly more NVH than the later cars.
2. with the added strain transmitted to the unit-body by the more rigid bushings, would it be an improvement, benefit or reduce NVH by adding either a tie bar under the subframe like this: http://gtspec.com/product/gtspec-fro...-is250is350isf
OR something across the top to isolate the dash vibrations
http://gtspec.com/product/gtspec-fro...is250is350is-f
Thanks for reading and any shared input!
Andy
Hi Andy, we are working on a USRS "Race" version that will be even stiffer, for those of us who are more extreme or do a lot of track events with R-compound tires.. All existing USRS's will be easily upgradeable for a very reasonable price.
Rafi
__________________
We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
#163
#164
sorry, that is a mistake, we will correct it, when you go to checkout it actually calculates shipping fees.
But, shipping to you comes to only $50 or so, which is not so bad
But, shipping to you comes to only $50 or so, which is not so bad
__________________
We Engineer Track Proven Upgrades For Your Lexus!
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER
SUPERCHARGERS : ECU TUNING : SUSPENSION : EXHAUST : PPE MASTER DEALER