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Another Steering arm Question

Started by _j.e.d._ , Mar 22 2012 02:11 PM

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#1 _j.e.d._

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Posted 22 March 2012 - 02:11 PM

I had a random thought this arvo (maybe I should keep these to myself...) now I understand that to eliminate bump steer when doing the HQ stub axle/brake conversion you use the A9X Harrop steering arms, which - to my limited understanding - drops the tie rod (?) connected to it from the steering rack down as well to sort this (I read somewhere that the tie rod end in theory should be parallel to the lower control arm?).
Could you not use the LH/LX arms, but mount the tie rod end to the underside of the steering arm instead of the top to get it running parallel? or would this put too much of an angle on the pivot point of the joint at the steering arm?
I read in a book I've got 'Building a Holden - Your Complete guide to modifying your Holden' an article on the brake conversion & they said to use the HQ steering arms as well so I wondered how could that be done, then thought maybe they fixed it to the underside?
Thoughts by anyone in the know? or am I just not getting it & should just stick to what has been proven..(which I probably will)
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#2 S pack

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Posted 22 March 2012 - 02:28 PM

If you look at a tie rod end you will see the shaft that engages in the steering arm is slightly tapered. The hole in the steering arm is also tapered to match, so no, you can only install the tie rod end one way in the steering arm.

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#3 76lxhatch

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Posted 22 March 2012 - 07:12 PM

I've heard of brackets that allow the steering arm to mount in one original hole on the stub axle and pivot it downward so the other is above or below, would be much like any number of brake caliper adapters I guess, just have to have enough room around the ball joint. Never seen one myself so I wouldn't know whether you'd use the original hole at front and raise the rear or vice versa, but I imagine you'd want it whichever way gives the smallest amount of drop at the tie rod end.

You could potentially ream the tie rod end hole to a larger size and use a bigger tie rod end to mount it underneath, but I think you'll find that will drop it quite a way (too far).

The reality is though that unless you have ready access to the right equipment either of these options requires machining that is probably going to cost more than a set of the right steering arms.

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#4 _j.e.d._

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Posted 14 May 2012 - 11:29 AM

Just ressurecting my old thread for more opinions..
I was havin a cruise thru some old projects & came across this front end HQ brake conversion which seems to be using the HQ steering arms with the ball joint fixed to the underside...any thoughts? Or will this not work well?..

http://www.gmh-toran...x/page__st__191

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#5 76lxhatch

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Posted 14 May 2012 - 12:57 PM

I measured that up at one stage (short steering arms, found in power steer HQ-WB and early HQ), I can't remember exactly but I think length wasn't too bad, they sat a little low as you can see by the photo in that thread. Not sure if it would have been too much lower, possibly