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Tech Question

Mark Leonard, Ottawa, ON, Canada, 1969 Dodge Dart 340

Hi Rick, I know you are a suspension guru so I hope you can help me out. I have been trying to get a good wheel alignment on my '69 Dart but I am still having problems with the passenger side. On the drivers side I am able to get about 3° positive caster with -0.5° neg camber, this is with the Moog offset bushing. On the right side however we just can't get any negative camber with positive caster. If we set it for maximum positive caster I can get more that +4° but that is accompanied by over 3° of positve camber. As soon as we adjust to get camber closer to 0 the caster completely goes away. We ended up with about +0.8° caster and +0.6° positive camber which is the best we could get. We duplicated this with the left side. Since I have already installed the Moog offest bushings to get maximum caster I am wondering if I could change them around to get more negative camber (i.e turn the arrow on the bushing toward the frame on both front and back)?

Obviously something is wrong with the suspension that makes it so different from left side to right side but I would like to get a decent alighment without changing everything. Any suggestions? My alignment guy thinks I should install the bushings according to the Moog instructions which calls for both arrows pointing toward the wheel. He feels this would give him a better starting point but to me is seems like that would just make the problem worse with more positive camber, of course he has been doing alignments for 30 years and I have never done one before.

Thanks for your help.

Mark-

I agree with you re: Bushing install. But - something is very wrong (bent). This assumes, of course, that the LCA stud tubes have not broken loose in the K-member. You need to measure all the diagonals carefully re: FSM dimension, or, much better, put the car on a frame bench.

Next time it is on the alignment rack, check for bumpsteer (or DIY - make two 18x24 plywood rectangles, attach w/piano hinge at long side, lean top of long side against center of tire edge, cinder block on horizontal piece, loosen t-bar adjustments, jack car up 'n' down from center of K, see what happens to gaps at front and rear sidewalls of tires.) Bet it is scary. If I am right -- fix it!

Rick

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