Have any of you found or seen different ways of adjusting the front camber on RCF/GSF/ IS500? Looking to add more negative camber for track and corners to minimize excess wear on the outside tire edge when pushing the car. The only way I've really seen is to replace the upper control arm and most of those look a bit sketchy. The RR Racing looks like a nice design, especially with the latest version not requiring unbolting the top to make adjustments. The only thing is I'd rather not go to a spherical bearing solid mount on the upper control arms to body connection. This is mainly to prevent excess NVH, but also longevity with the spherical bearing being exposed. Anyone have experience with the RR Racing upper controls and thoughts on the change in ride on the street?

Any other options out there besides upper control arms? or at least a nice design maintaining bushings at the body connection?

I saw where at least some prior gen Lexus cars used adjustable ball joints in the stock upper control arm. Not sure about those being an option on these cars or how well they hold camber setting.

 

I’ve heard that the adjustable ball joints have a habit of slipping so you end up losing your alignment overtime.

You should ask RR if they provide a set of ends that have a bushing instead of the spherical bearing.

 

Thank you for the feedback, I was wondering if the adjustable ball joints would slip over time..

Mainly looking to get to around -1.8 degrees negative camber for the front tires. Balance street with track tire wear. These car stock front camber shreds the outside edge of the tire when pushing it and not even pushing it that hard, just fun spirited track and street driving.

Gaining negative front camber without adding excess NVH is my goal. I'll have to reach out to RR Racing to see if they make a version with bushings at the inner connection, I like that idea.

 

as an update, I did hear back from RR Racing and they don't have a version with bushings at the chassis connection points (only the spherical bearings are offered).

 

I have discussed this with Mike at Figs Engineering a few times. He would make UCA with poly inner bushings. Last time I bugged him about it was in August.

 

That would be great.

I see Figs has a bushing version already for the ISF. Would be ideal to have the centered bushing version and get -1.5 to -2.0 degree front camber with only adjusting the spherical bearing that is replacing a ball joint.
ISF Bushing version

They only show a full spherical bearing version for the RCF/GSF
RCF/GSF Spherical Bearing version

 

Yup I have that version on my IS F. Front camber is set at just under -2 degrees.

 

It’s not exactly the same, but you might also look into Figs spherical LCA assemblies, as these increase dynamic negative camber as a result of increasing static negative caster.

 

Update - I took the plunge and ordered RR Racing R2 UCA for RCF/GSF. Have them installed and quite happy with them. I haven't noticed any change to NVH (yet at least) and have driven on a mix of smooth, bumpy, and broken pavement. I did add some heim joint boots to protect the spherical surfaces from debris, muck, and water.