What could cause rear camber out of spec?

[H.M.]

Had my alignment done 5/09. Right rear camber was -1.3 degrees and toe was 0.04 degrees.

Had alignment done 6/10 and right rear camber was -1.18 degrees and toe was 0.07 degrees.

So camber was out of spec both times.

How do I fix the camber?

I'm looking at all components, trying to figure out how to fix. There's no evidence of anything looking broken, bent or deteriorated unreasonably for a 1990 car.

I can get and install new upper control arms and also replace 8 bushings, but don't see what I else I replace back there (other than struts and springs) to solve this problem.

Any ideas on how to fix this?

[4CYLPOWER92]

I take it you are not lowered? That's the only thing I know of that causes camber to be negative.

[H.M.]

Correct.

Everything on the suspension is stock except for the front bushings which have been replaced. So I'm thinking something must be bent / broken.

[4GAccordH22]

Something is bent, broken or worn. Worn bushings or ball joints could possibly cause negative camber. Take a close look at the bushings and check if there is any play in the ball joints.

[wed3k]

what was the left side camber? if it is at -1 degree, i wouldnt trip about it.

[H.M.]

Right rear.
Are the left and right sometimes different for some reason?

[wed3k]

im asking, what was the left rear spec.

[H.M.]

sorry, I misunderstood.
The L Rear camber was -0.1 when I drove in and when I left.
The L Rear toe was .04 adjusted to .06.

[wed3k]

okay, you can use the washer trick for the rear. i think it is two 3/8" washers under each bolt is about .5 degree. 3 or 4 washers is the most id go till putting in a longer bolt.

[H.M.]

Thanks for the washer tip. I appreciate that.

I think, cuz I'm wondering if there might be a bent part or deteriorated bushing in the original 21 year old parts, that I'm just going to buy new upper control arms and a new bushing kit for the lower arms.

That should tighten things up, is a good investment and if it doesn't fix the camber at least I'll know a rotted bushing or bad ball joint isn't the cause.

Thanks for the tip.