Alignment Problem (Report Attached)
10-31-12, 09:54 PM
#16
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I went to a dedicated alignment shop, and they said they couldn't adjust the subframe. They said if they do it would throw of the other side., however they could adjust my steering wheel to compensate for the pulling. Any other help is highly appreciated.
10-31-12, 10:25 PM
#17
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They're idiots. It will affect the other side, but it's just as screwed up. You're looking for balance between right and left, and you currently do not have balance at all. If they reposition the subframe correctly, your camber and caster will be within the normal range and you should be better off.
Simple arithmetic shows this - if you add the front camber (left + right) you get -0.7 + - 1.5 = -2.2. If you divide -2.2 by 2 which is what happens if you move the subframe toward the left side, you'll get exactly -1.1 on both sides which is precisely what the alignment sheet says it should be.
A number of IS-F owners have done this. It works very well and makes the car drive straight without any steering corrections at all.
The FIGS bushings will fix the inside edge wear problem almost all the 2IS have in the front. Nothing else will, not even repeated changes to alignment.
Simple arithmetic shows this - if you add the front camber (left + right) you get -0.7 + - 1.5 = -2.2. If you divide -2.2 by 2 which is what happens if you move the subframe toward the left side, you'll get exactly -1.1 on both sides which is precisely what the alignment sheet says it should be.
A number of IS-F owners have done this. It works very well and makes the car drive straight without any steering corrections at all.
The FIGS bushings will fix the inside edge wear problem almost all the 2IS have in the front. Nothing else will, not even repeated changes to alignment.
Last edited by lobuxracer; 10-31-12 at 10:31 PM.
10-31-12, 11:22 PM
#18
Then it sounds like the shop you went to are incapable of doing this.
What lobuxracer saids is pretty much correct. Basically need to find the right shop which can position the geometry appropriately to get within the correct ranges then the car can be properly aligned.
I do recommend FIGS bushings. I will do this to my vehicle when I switch to my winter tires.
What lobuxracer saids is pretty much correct. Basically need to find the right shop which can position the geometry appropriately to get within the correct ranges then the car can be properly aligned.
I do recommend FIGS bushings. I will do this to my vehicle when I switch to my winter tires.
10-31-12, 11:55 PM
#19
We are also getting install data on the eccentric version of the rear arm bushing to give "clock" positions for some other forms of corrections to caster angles. Something that you might not consider is that a multi-link rear suspension has quite a bit of steering influence. If toe is off in the rear it can impact the front steering. So it is important to align the rear first, then the front. Get the rear toe values balanced before you mess with the front and I am willing to bet it will help. On lowered cars this made even worse with the inclination angle of the toe link causing bump steer which is why we have length adjusting links to mitigate that. vs teh stock eccentric mount on a fixed length link. Above all the tools are only as good as the mechanic using them. If you cannot find a shop that understands simple geometry then all the adjustments will make no difference.
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Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
Last edited by FIGS; 10-31-12 at 11:59 PM.
11-05-12, 01:18 AM
#20
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They're idiots. It will affect the other side, but it's just as screwed up. You're looking for balance between right and left, and you currently do not have balance at all. If they reposition the subframe correctly, your camber and caster will be within the normal range and you should be better off.
Simple arithmetic shows this - if you add the front camber (left + right) you get -0.7 + - 1.5 = -2.2. If you divide -2.2 by 2 which is what happens if you move the subframe toward the left side, you'll get exactly -1.1 on both sides which is precisely what the alignment sheet says it should be.
A number of IS-F owners have done this. It works very well and makes the car drive straight without any steering corrections at all.
The FIGS bushings will fix the inside edge wear problem almost all the 2IS have in the front. Nothing else will, not even repeated changes to alignment.
Simple arithmetic shows this - if you add the front camber (left + right) you get -0.7 + - 1.5 = -2.2. If you divide -2.2 by 2 which is what happens if you move the subframe toward the left side, you'll get exactly -1.1 on both sides which is precisely what the alignment sheet says it should be.
A number of IS-F owners have done this. It works very well and makes the car drive straight without any steering corrections at all.
The FIGS bushings will fix the inside edge wear problem almost all the 2IS have in the front. Nothing else will, not even repeated changes to alignment.
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