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Username Post: Borgenson steering or rack and pinion        (Topic#365101)
Joelinda5386 
Poster
Posts: 78

Reg: 07-18-16
05-03-21 08:05 PM - Post#2819234    

My car is wandering all over the lane. It has a borgenson steering box on it and I was thinking about rack an pinion any advice please



 


Shepherd 
Frequent Contributor
Posts: 2239

Loc: Lake George, NY
Reg: 11-11-15
05-04-21 04:04 AM - Post#2819242    
    In response to Joelinda5386

So what is the root cause of this, gear box play, linkage wear? Alignment?



 
japete92 
"7th Year" Silver Supporting Member
Posts: 1619
japete92
Loc: No. Virginia
Reg: 01-18-13
05-04-21 05:40 AM - Post#2819251    
    In response to Joelinda5386

  • Joelinda5386 Said:
My car is wandering all over the lane. It has a borgenson steering box on it and I was thinking about rack an pinion any advice please



The Borgeson box instructions 'recommend' about 4 degrees of positive caster (I don't remember the exact number).

I also don't remember the exact steering ratio of the Borgeson box, but it's approx 15:1, compared to the GM OEM 22:1 (approx).

The additional caster is REQUIRED to provide the proper 'return to center' forces that steering ratio requires. The OEM upper control arms can't give that much (any more than about 1 1/2 degrees is pushing their limit). Without the additional caster the steering will 'wander' and holding a straight line is a chore.

Tubular upper control arms with built in 5 degrees of + caster solve the problem.

Because the hydraulic pressure is applied directly into the steering box, a pressure regulator/reducer can fine tune, and smooth out, the steering (another source of possible steering instability with the integral steering box).

Add a sway bar and roll in turns is reduced.

All the above is based on ALL other components being in proper operating condition. No issues with tires, bushings, alignment , or ANY degradation of ANY OEM part.

After spending WAY more than I originally envisioned, my steering is a little better than a proper OEM system, but the gain was not commensurate with the costs. If I could take a 'mulligan', I would have simply rebuilt my leaking control valve (the only problem I was having).

Pete



 
Joelinda5386 
Poster
Posts: 78

Reg: 07-18-16
05-04-21 05:35 PM - Post#2819279    
    In response to Shepherd

New gear box new linkage fresh aligned



 
japete92 
"7th Year" Silver Supporting Member
Posts: 1619
japete92
Loc: No. Virginia
Reg: 01-18-13
05-05-21 06:29 AM - Post#2819296    
    In response to Joelinda5386

  • Joelinda5386 Said:
New gear box new linkage fresh aligned



Aligned to what specs?

OEM specs (basically neutral/zero caster) do not suffice with the integral steering boxes. They require the approx +4 degrees to 'return to center' properly, and to NOT 'wander'.

Pete



 
Shepherd 
Frequent Contributor
Posts: 2239

Loc: Lake George, NY
Reg: 11-11-15
05-05-21 08:08 AM - Post#2819300    
    In response to japete92

Good info,japete, 4 degrees caster is just about impossible on these cars with stock suspension, I never get more than about 1.5 without putting the camber out of range.



Edited by Shepherd on 05-05-21 08:11 AM. Reason for edit: No reason given.

 


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