New Upper Contol Arms and Ball Joints
#16
Lead Lap
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I have these arms.. I don't know how much there castor adjustment will help, looks like its very minimal.. how ever figs does have bushings that allow you to adjust right from the lower castor arm..
http://shopfigs.com/v1/index.php?rou...product_id=221
Second just a FYI - if your car is lowered and you go over a bump .. these arms are really fat (tubular) and they actually hit the plates which are holding this arm.. Ill take a pic if I get a chance. I mean it makes no difference that the plates are bent now but I don't know why this wasn't seen before it was made. My car isn't super low or anything but I realize I cant even lower it more because of that :S
http://shopfigs.com/v1/index.php?rou...product_id=221
Second just a FYI - if your car is lowered and you go over a bump .. these arms are really fat (tubular) and they actually hit the plates which are holding this arm.. Ill take a pic if I get a chance. I mean it makes no difference that the plates are bent now but I don't know why this wasn't seen before it was made. My car isn't super low or anything but I realize I cant even lower it more because of that :S
Last edited by 416tt; 08-11-15 at 07:10 PM.
#17
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those castor bushings are definitely a good idea to replace if you havnt.. I have daizens .. there design isn't as functional as figs so I plan on replacing them but did get rid of the weird wheel wandering feeling I had. front end feeling more solid and yeah my oem bushings were like soft and done...
Last edited by 416tt; 08-11-15 at 07:23 PM.
#18
Lexus Test Driver
Thread Starter
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Here is the installation video for the SPC 72270 upper control arms. Towards the end they show the caster and camber adjustments.
BTW, these are also for the SC430
BTW, these are also for the SC430
#19
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I could be wrong but I didn't think the SPC control arms adjust caster. Camber yes but caster no, the caster is adjusted via the lower lateral arm and figs does sell a caster bushing off center if caster needs to be changed. But from past experience unless you are driving really low the caster does not need to be changed although the factory castor bushing is the cause of a lot of tire wear. I've changed mine out and have no regrets, the factory bushing was shot on almost all the lexus's I've owned. The figs bushings are on my SC, GS and IS and was definitely one of the major contributors for my tire wear.
#20
Lexus Test Driver
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The upper control arms and lower ball joints arrived today and I am really looking forward to driving the car after they are installed with a good four wheel alignment.
Thank you all for your comments but especially mademedoit and Bon, you focused on the parts I ordered and helped me understand the best way to use the product!
Last edited by Bgw70; 08-12-15 at 04:45 PM.
#21
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I could be wrong but I didn't think the SPC control arms adjust caster. Camber yes but caster no, the caster is adjusted via the lower lateral arm and figs does sell a caster bushing off center if caster needs to be changed. But from past experience unless you are driving really low the caster does not need to be changed although the factory castor bushing is the cause of a lot of tire wear. I've changed mine out and have no regrets, the factory bushing was shot on almost all the lexus's I've owned. The figs bushings are on my SC, GS and IS and was definitely one of the major contributors for my tire wear.
#22
Lexus Test Driver
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kuWupt, those figs have very impressive bushings and I appreciate the video and suggestions but mademedoit is correct, I am going for the nice smooth Lexus driving experience with the correct factory specifications.
This is my wife's car and trust me, I would enjoy the tighter, more solid feel of the suspension, but she would be the typical girl and tell me it's "too bumpy" LoL
Now if she drove like Danica, that would be a different story! ;-)
This is my wife's car and trust me, I would enjoy the tighter, more solid feel of the suspension, but she would be the typical girl and tell me it's "too bumpy" LoL
Now if she drove like Danica, that would be a different story! ;-)
#23
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Gotcha, not saying you need to do the poly bushings, you can do a factory spec bushing or replace the arm itself. I'm just saying that to resolve the caster issue the main culprit would be the #2 caster bushing. With Worn caster bushings the front wheels toe out and the caster goes negative on acceleration. This can cause uneven tire wear, vibrations, tires howling at highway speeds etc. So to get the Lexus ride quality back that is one that needs to be addressed. The SPC UCA might correct the caster issue on an alignment rack but might not bring back the factory feel on the road. Also, the biggest difference I've seen driveability vise was changing the inner and outer tie rods.
Here is the post from my build thread regarding the suspension components I changed out and why:
https://www.clublexus.com/forums/sc4...ml#post8862415
Here is the post from my build thread regarding the suspension components I changed out and why:
https://www.clublexus.com/forums/sc4...ml#post8862415
#24
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it made quite a difference for me just changing that caster arm bushing.. before the wheels would pull me all over the place and I would have to hold the steering quite tightly.. you can always put a new oem castor arm on but knowing that it'll wear again, I would personaly just go for the poly.. I would say it would be stiff if you went for a daizen because it doesn't allow much movement at all.. But figs one on the other hand has a very functional design. (rounded middle area for movement.. The daizen upper and lower control arm bushings are GREAT and work very well... as for the Castor arm I would recommend figs for sure.
The spc arm is very good, but my only reason to get one is to get better alignment.. well camber in most case.. my new tires got destroyed
..
bgw is your car lowered at all?
The spc arm is very good, but my only reason to get one is to get better alignment.. well camber in most case.. my new tires got destroyed
![Frown](https://www.clublexus.com/forums/images/smilies/frown.gif)
bgw is your car lowered at all?
Last edited by 416tt; 08-15-15 at 12:05 AM.
#25
Lexus Test Driver
Thread Starter
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My car is stock and at OEM ride specs.
I purchased the SLPs so the caster could be adjusted.
All of the parts are installed and I created a new thread with pictures.
https://www.clublexus.com/forums/sc4...ml#post9150699
I purchased the SLPs so the caster could be adjusted.
All of the parts are installed and I created a new thread with pictures.
https://www.clublexus.com/forums/sc4...ml#post9150699
Thread
Thread Starter
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