Re: Scout lift and spring-over
> 1.What problems are we getting into with the steering?
The main problem is bump steer - when the drag link is not level, then the horizontal component of
it's length increases as the suspension compresses. This causes the weels to turn to the right
as the suspension compresses. I did a springover with flat stock springs, and I don't have enough
bump steer to be noticable. With a springover plus 2 1/2" lift springs, it will be worse, though
stiffer springs may help. The only real way (that I'm aware of) to cure the bump steer issue
(and get the tie rod and drag link up away from the rocks too) is to do a crossover steering
conversion. To do this, you swap in knuckles that have a flat spot on top, with bolt-on steering
arms. You can use chevy knuckles, but they have six spindle bolts instead of eight, so you'll
need to go with the chevy spindles. I think IH or ford hubs/rotors fit, so you can keep the
same bolt pattern. If you want to stay with the IH (8 bolt) spindles, then you need to find a pair
of '74/'75 IH 1/2 ton Truck/Travelall knuckles. The steering arms are a custom part that you
can get from places like DynaTrac, Tri-County, etc. Anyway, what all this buys you, is that it
relocates the tie rod and drag link above the springs, and gets them a lot closer to being
level so bump steer is reduced. I haven't actually done this yet, but I've acquired a pair
of '75 150 pickup knuckles and plan to do the conversion in a couple months. If you
decide not to go with crossover steering, then you'll need to fabricate a 'Z' shaped
drag link - this allows the drag link to clear the springs.
>2.The pumpkin is going to need to be twisted for drive-shaft alignment
I would, with that much lift. This will require a CV joint on the transfer case side of
the rear driveshaft to prevent vibration. You'll probably need one on the front
driveshaft too, though not so much because of vibration (you can avoid the
vibration by just not driving in 4wd at high speeds), but because u-joints
probably can't take the angle you'll get at full droop without binding.
Feel free to post with any other questions you may have, and keep
us updated on how your project goes!