1. Okibonoe

    Okibonoe Well-Known Member

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    I just ran across an old article that featured the CAP K member with a front steer rack and pinion option. Any idea why QA1 didn't bring that option with the relabeled K member?
     
  2. 72bluNblu

    72bluNblu FABO Gold Member FABO Gold Member

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    Because the front steer geometry with the factory suspension is terrible.

    CAP had some good designs, but they also made some very questionable decisions.
     
  3. Okibonoe

    Okibonoe Well-Known Member

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    Gotcha. What was bad about the geo? Was it a bumpsteer thing? Was it bad for corners? Just wondering. Ive had some aftermarket K's on other cars, and the geo was off, but more than correctable. A lil Ackerman math, and we were good!

    Thanks!
     
  4. 72bluNblu

    72bluNblu FABO Gold Member FABO Gold Member

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    The Ackerman is a problem.

    If I remember correctly even CAP marketed that rack as only for drag racing.

    If you “need” to have a rack and pinion then a full k frame replacement and coil overs is the way to go. RMS, HemiDenny, etc. Use suspension actually designed for front steer instead of trying to band aid the factory rear steer suspension to work with front steer components.
     
  5. myduster360

    myduster360 FABO Gold Member FABO Gold Member

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    A few pics may serve to better inform.

    upload_2019-8-15_21-11-9.png

    No apparent Ackermann issue with a modified steering geometry.
    upload_2019-8-15_21-16-21.png upload_2019-8-15_21-15-11.png

    The Welded steering arm and stock knuckle gives some pause

    upload_2019-8-15_21-17-43.png
     
  6. 72bluNblu

    72bluNblu FABO Gold Member FABO Gold Member

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    There’s no way in hell I’d run that welded spindle on the street.

    Do it right or stay off public streets.

    The factory Mopar, rear steer suspension components do not lend themselves easily to a front steer conversion. Can you do crazy BS like the suspensions above and maybe come out with steering geometry that’s somewhat passable? Sure.

    But why? Why spend the time and energy re-engineering the entire steering geometry using parts that were intended for rear steer so you can have a cobbled up front steer rack?

    What does a rack get you anyway? A little more modern steering feel? It doesn’t make you faster. Maybe a manual rack might save a couple pounds over a manual steering box, but if you weld 5 lbs of iron onto your spindles I doubt you’re coming out ahead.

    I’m sticking with my original advice. If you MUST have a rack, buy an RMS or HemiDenny conversion. That way you’re using components that were designed for front steer and a well thought out conversion. I’ve seen more than a couple of these front steer rack conversion attempts here, they almost never end well.
     
  7. famous bob

    famous bob mopar misfit FABO Gold Member

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    What does a rack get you / Usually no clearance problems on the headers , I would think. I cant imagine a factory steering box and shaft clearing my headers .
     
  8. 72bluNblu

    72bluNblu FABO Gold Member FABO Gold Member

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    Mine does! No clearance issues between the headers, steering shaft or steering box.

    Besides, I’d rather need a couple dimples in the headers than have a jacked up Ackerman or have to weld steering arms onto the stock spindles. That’s just asking for trouble.
     
    • Agree Agree x 1
    • famous bob

      famous bob mopar misfit FABO Gold Member

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      do you have a r/b , w/ raised port heads / Makes a lot of diff. .
       
    • famous bob

      famous bob mopar misfit FABO Gold Member

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      Agree on the ackerman .
      Do u have a r/b w/ raised port heads ?
      MY headers came off of a 68 dart r/b , raided port heads , w/ factory steering, the 1-3 tubes were beat in pretty bad.
      I cut them out and drove an 1 7/8" trailer ball thru them while heating them, re welded them in. They are close everywhere, but clear everything .
       
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