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"Bolt-In" Power Steering Box 2.7 Quick Ratio.

lilthom

Contributor
Bronco Guru
Joined
Nov 29, 2005
Messages
1,659
mystery box

It looks like this thread died back in 2009 without the source vehicle being discovered. As for he ebay offer that 14:1 ratio could wear a person out on the trails.
 

DirtDonk

Contributor
Bronco Guru
Joined
Nov 3, 2003
Messages
47,343
It's probably better than the stock Bronco boxes up until '76 at least. Ratio isn't the same as turns lock-to-lock, so it's hard to tell just what you're getting from the numbers. You'd have to drive something similar.
I really have no idea what changes internally, or how the different ratios are accomplished, but here's my basic understanding of the whole thing.

That 14 to 1 number is similar (if I remember correctly) to the GM Saginaw boxes from the mid-seventies to the late eighties or so. GM used several different ratios over the years in that line. Some were performance, some were granny-car, but it had more to do with the "feel" of the steering, rather than exclusively how many turns it took to run it through it's paces.
There were even some variable-ratio boxes as well.
Which is why I don't fully understand the whole concept. But the e-bay box in the link is a very nice setup that Borgeson sells and is quicker than the stock Bronco boxes. If I'm not mistaken, it's even quicker than the later EB boxes. But you can easily verify this with some of the vendor's claims. I think several of them, like Wild Horses, Tom's and Duff all sell the same setup.

Paul
 
Last edited:

BurntOrange74

Full Member
Joined
Nov 2, 2006
Messages
212
looks like this box mounts on the inside of the frame. my original box mounts on the outside of the frame......
 

bushman_22

Jr. Member
Joined
Jul 22, 2010
Messages
132
Loc.
Aloha, OR
Mystery partially solved!!!! I contacted Nexteer (formerly Delphi) and got a response from James Nadolny (Chief Engineer from Knopf automotive) Although he could not tell me the exact application, He did verify that it is from a RH drive vehicle. Getting closer

Bushman
 

Broncobowsher

Total hack
Joined
Jun 4, 2002
Messages
34,833
LLV?
The boxy postal vehicles? I knew people who worked at GM proving grounds when they were developing those things. They were filled with parts off the GM part shelves. Delphi steering box perhaps? The were Right Hand drive...

Just speculation.
 

Viperwolf1

Contributor
electron whisperer
Joined
Aug 23, 2007
Messages
24,316
It's probably better than the stock Bronco boxes up until '76 at least. Ratio isn't the same as turns lock-to-lock, so it's hard to tell just what you're getting from the numbers. You'd have to drive something similar.
I really have no idea what changes internally, or how the different ratios are accomplished, but here's my basic understanding of the whole thing.

That 14 to 1 number is similar (if I remember correctly) to the GM Saginaw boxes from the mid-seventies to the late eighties or so. GM used several different ratios over the years in that line. Some were performance, some were granny-car, but it had more to do with the "feel" of the steering, rather than exclusively how many turns it took to run it through it's paces.
There were even some variable-ratio boxes as well.
Which is why I don't fully understand the whole concept. But the e-bay box in the link is a very nice setup that Borgeson sells and is quicker than the stock Bronco boxes. If I'm not mistaken, it's even quicker than the later EB boxes. But you can easily verify this with some of the vendor's claims. I think several of them, like Wild Horses, Tom's and Duff all sell the same setup.

Paul

I believe the 14:1 ratio refers to the input turns : output turns. No box really can make a full turn on the output. Typically they turn about 90 degrees, or 1/4 turn on the output. That would make it a 3 1/2 turn box (14/4=3.5).
 
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