99SH

I installed a 12mm bumpsteer spacer to the front about a week or two ago and have noticed more understeer. The front doesn't seem to be as planted and "on rails". The car is lowered with about 1 finger gap. After installing the spacer, I got an alignment (-2 camber all around, 0 toe in front, 1/4" total rear) and corner balance. I'm thinking of removing these things and going back to my old setup. This may be all in my head, I'll have to drive a bit more and mess with tire pressures to see what happens.

Any comments?

Jaku

front only?

SOHCmyDOHC

Did you "preload" the control arm bushings? By the sounds of it you didn't. Floaty feeling in the front?

99SH

Preload the control arm when installing the spacer? I'm not following you...

CoralDoc

I think the idea is to not preload your a-arm suspension bushings when corner weighting.

Here's the best general procedure:
1. Roll the car up onto a lift with scales for corner weighting.
2. Remove one sway bar end link from the front and rear bars. This step removes sway bar pre-load.
3. Loosen all of the a-arm adjustment and attachment bolts and allow the car to settle. You may want to roll the car forward and back a little. This step removes bushing preload.
4. Securely tighten the a-arm attachment bolts that are not used for alignment.
5. Snug up the alignment bolts.
6. Corner-weight the car
7. Align the car.
8. Re-attach the sway bar end links. The use of adjustable end links will allow you to remove sway bar preload too.
9. Enjoy your newly setup car and make adjustments to your settings to achieve your handling goals.

99SH

I've scheduled for another alignment on Friday. As I stated earlier i'm running -2 camber all around which I think is my biggest problem. Prior I had -0.5 / -1.5 which felt better. I'm going to go back to the 0.5 deg stagger but not sure which one of these to go with. Any inputs are appreciated.

F/R
-1.5 / -2.0
-1.75 / -2.25
-2 / -2.5

Im thinking to go with the first choice.

Wildncrazy

You didn't really have a half degree stagger you had a 33% stagger. To get the same balance you need to maintain that 33% differential.

At a 2 degree rear camber you would want the front to be 1.32
At 2.25 you would want 1.485 front
2.5 = 1.65

Of course you can't maintain that accuracy.

Since you are aligning you might want to get it aligned with you in the driver's seat. I did that a couple of times and found out that with me in the seat it increases the camber by .2 of a degree so now I just align the car with the driver's side .2 less than the passenger so that when I am in the car the alignment is balanced.

Jaku

do you mean bump steer as RCA or steering ridge spacer?

99SH

Yes, this is the 12mm spacer that goes under the steering rack.

S2Kitt

Hey what would be a good camber setting for me?
currently think I have
F: -1.3
R: -2.1
I'm running FN01R-C
Front 17x8 43offset 215/45/17 BFG g-Force tires
rear 17x9 430ffset 245/40/17 BFG g-Force tires

I also have BC BR-Type coilovers with about 2.5 to 3.5 inches of drop heres a pic for references.