I'm no expert but looking from the point of view that is straight through the centre point of the torsion tube, this is how I see your set-up:
the suspension and the steering arms want to arc towards and away from each other as they travel up and down!
Would this work better?
I'm aware that this is an old topic but I want to fit power steering and if I'm right, I think the answer is to weld a length of pipe through the frame head to create a tunnel in which to mount the steering rack.
I had a Baja that had a Porsche 914 center mounted rack. It had some serious bump steer. I moved the rack forward about 2", and replaced one of the tie rods so they were both more equal in length. A shorter rack and longer tie rods would have been better, but it really wasn't bad after moving it forward a bunch. I see the thread is actually 2 years old, but any updates from the original poster?
Dealer for Alloy Wheels & Period H4s and Fog/Driving Lights
I have since gone back to the old steering box. Not only for the bump steer issues, but the box ratio is quicker than the rack.
We built a 2nd car with a box to start off with and it was so much easier to drive than the other car .... after checking everything out we found the rack to be the culprit. Especially in the twisty bits you can catch the car so much quicker with the box.
The only down side from the rack to the box is the steering got quite heavy with the amount of cater we are running. But I might have a solution to this... I found an electric power steering column from a Chev Corsa pickup that has internal intelligence. You feed power, ground and engine RPM and then it works. Will try this on one of my other projects first and see.
