I have a '77 rubber bumper B. I've rebuilt the entire front
suspension including new rack & pinion unit, polyurethene A-arm
bushings, new lower A-arms, along with new swivel hubs, kingpins,
bearings etc. In other words, the whole lot.
The car drove and handled much better then when bought from
the PO. (It was so bad that the steering wheel would not come
back to center during a turn: seized distance tube/kingpins).
With the rebuilt front end as a baseline I decided to lower the
front by a spring change (#480 rate) and install a Spax shock
kit at the same time.
Now that all the changes are done, I'm not that happy with the
overall performance. My main problem is that there is a 'thump'
that I can hear (slightly) and feel through the steering wheel. It
seems to occur mostly on the down-stroke of the suspension.
The lowered coil springs introduces a lot of negative camber
onto the spindles/wheels/tires. How bad is this on the kingpin
bushs and other stressed components? I'm not worried about
tire wear.
Has anyone else been this route and had the same problem?
My goal is to prep the car for DSP class auto_x. Right now I'm
running HS class, but would like to lower the car to c/b height
which makes it 'not stock anymore'.
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