Behemoth7

Hey guys, I need some advice. I'm considering dropping my car pretty low, definitely over 2". However, I am wondering what the best way to correct my suspension geometry is.

I have a few options, there are front and rear roll center adjusters(RCA) and also front and rear Adjustible control arms. The front RCA ranges from 17mm up to 40mm, and from what I understand does not have any Adjustibility. It is a true RCA however, so it raises the roll center, but how does this effect camber and is there any camber correction? The rear RCA has 3 different ranges of camber adjustibility, +1, +2, and +3. As far as I know, this is not a true RCA, it just drops ride height and offers adjustment.

The Adjustible front upper control arm is made by SPC and I've heard a mixed bag of opinions. Some people complain about the ball joints wearing out quickly or the bushings going bad. It does however offer a lot of adjustment, with camber and caster. The Adjustible rear lower control arm does basically the same thing as the rear RCA, only that it is an entire arm and not just something that bolts to the factory arm. However, those rear arms are pretty expensive.

So what do you guys think I should do? I'd love to stir up some conversation on this because from what I've seen, most people just slam the GS and don't consider what it is doing to their suspension, tires, and alignment. Thanks guys!

Mcon

iTrader: (1)

My RCA's Rear Camber and D2 Coilovers








My Adjust Rear Arms from IS300 2001 to 2005 Megan Racing





When I brop my car was a -2 camber. This Arms help my align guy to go to O Green Color on the alignment. I hope and this info. help you.

Mcon

iTrader: (1)

Megan Racing is no that expensive. I pay on eBay 3 years a go like $250.00 for all 4.

Behemoth7

Whats the pink arm? Is that the trac arm? Was that needed for alignment? I was already gonna get toe arms. Thanks for the info!

What about the front alignment?

xHyaku

The pink is the toe arm, and blue one is the trac arm.

All the research I've done with the spc front uca is that they usually go bad when people pair them up with front RCAs. My plan was to run SPC uca w/ Figs outer tie rods to eliminate the bumpsteer, and not to worry about upper balljoint failure. Then again I don't have any experience with this combo because I totally went 180 with that set up.

I ended up running front RCAs and poly uca bushings giving me -3.3 front camber with the arm maxed out positive. Close to my goal of -3.0.

Mcon

iTrader: (1)

This RCA's Front Cambers and I use the 30mm. Also, with the SPC Adjustable Boil Join. My Baby was align perfect. All tire on Green Zone and I use it for like 2 or 3 year now with not issue at all.

Behemoth7

Did you get the updated design of the SPC control arm? Did the RCA help get you even lower or was it just for raising the roll center? Also, for the rear RCA, what camber setting do you have it on and how low are you?

Thanks for answering all my questions, I think I'm going to go the same way you did!

Mcon

iTrader: (1)

1. Yesss. Updated design from SPC Control Adjust Arm. Sorry I don't have a pics for it.
2. Yesss. RCA's Camber Kit help me a lot.
3. The rear RCA's, I use it the center one. I don't used the -3 or +3 rear ones.
4. Picture show U how low is my car right now. Is not a lot. But with the body kit look more lower.

Mcon

iTrader: (1)

I not have to much signal in this area. Later today I post a few pictures. Is like 3" low and I not need to bent the fenders or rear panels. With 20x8 and 20x11 on back.

Mcon

iTrader: (1)

Check this item on eBay.
161339961734
400172168661 This ones is what I use it on my car.
271674977770 You can use this one and work the same as RCA's Rear Camber

Mcon

iTrader: (1)

Sorry for the pictures. Is no the best on my baby

Mcon

iTrader: (1)

702GS

Tons of pictures! I am looking to get my camber in spec, the rear is WAY worse than the front, I would much rather have the entire arm than these ad ons, suggestions?

Mcon

iTrader: (1)

Put pictures when you finish with your baby to see the result. .

Behemoth7

Your car looks awesome mcon! Very nice work.

By the way, I think I'm going to do Megan rear lower control arms because they are roughly the same price as the sage RCA, and I'd rather have the whole arm for the same price. And also Megan toe arms in the rear. Then up front I'm not going to use and RCA. From what I've heard it effects the camber arc and I don't want to screw up my geometry. I'm just going to do a SPC front upper control arm and hope for the best. And if for some reason I have bumpsteer issues I'll get some FIGS outer tie rods.