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Re: [Healeys] Steering Jiggle on and off throttle

To: healeys@autox.team.net
Subject: Re: [Healeys] Steering Jiggle on and off throttle
From: Bob Spidell via Healeys <healeys@autox.team.net>
Date: Thu, 15 Aug 2024 06:30:45 -0700
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
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No one's tackled this yet, so I'll take a stab. This sounds a little bit 
like 'torque steer' that some FWD cars have (though it's been largely 
eliminated in newer FWD cars). Healeys, of course, are RWD so it's not 
that, and I've not experienced nor heard of this problem in a Healey. 
The front suspension isn't linked to the drive train in any way, so I'd 
check engine mounts; it's conceivable, but not likely the rocking of the 
engine could cause it to hit the steering column (the carbs are pretty 
close to it). If the chassis is somehow tweaked it might cause some 
tracking issues, though it would likely be under all conditions. 
Presumably, you've checked to assure the steering box is properly anchored?

That's all I got.

Bob

On 8/14/2024 7:45 PM, JONAS PAYNE wrote:
> I have an early BJ8 that has been thoroughly gone through. Pretty much 
> new everything.  Recently I have experienced a jiggle/pull in steering 
> when getting on and off throttle, admittedly with a heavy right foot.  
>  Doesn't necessarily pull to one side or the other, just jiggles a 
> moment.  It's an on/off throttle thing, doesn't do it when braking.
>
> I've checked the rear - everything seems tight, and all bushings have 
> been replaced.  motor mounts are good, transmission tension 
> rod/bushings are good.  little or no play in the front end, all new 
> there too.    Front end alignment appears to be good. Steering box is 
> properly adjusted and has normal "play" for a cam and peg box as with 
> my TR3's and Morgan + 4's.
>
>   It isn't dangerous, but it doesn't feel right.  That said, for all I 
> know, it's part of the "vintage healey experience".  I have 5 other 
> vintage british sports cars and each has their own issues that are 
> part of their charm.
>
> Would appreciate anybody's experiences thoughts.
>
> Jonas
>
>
>
>
>
> ------------------------------------------------------------------------
>
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    No one's tackled this yet, so I'll take a stab. This sounds a little
    bit like 'torque steer' that some FWD cars have (though it's been
    largely eliminated in newer FWD cars). Healeys, of course, are RWD
    so it's not that, and I've not experienced nor heard of this problem
    in a Healey. The front suspension isn't linked to the drive train in
    any way, so I'd check engine mounts; it's conceivable, but not
    likely the rocking of the engine could cause it to hit the steering
    column (the carbs are pretty close to it). If the chassis is somehow
    tweaked it might cause some tracking issues, though it would likely
    be under all conditions. Presumably, you've checked to assure the
    steering box is properly anchored?<br>
    <br>
    That's all I got.<br>
    <br>
    Bob<br>
    <br>
    <div class="moz-cite-prefix">On 8/14/2024 7:45 PM, JONAS PAYNE
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:DM6PR01MB373964610227F86E9B194196F8802@DM6PR01MB3739.prod.exchangelabs.com">
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style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, 
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        I have an early BJ8 that has been thoroughly gone through. 
        Pretty much new everything.  Recently I have experienced a
        jiggle/pull in steering when getting on and off throttle,
        admittedly with a heavy right foot.   Doesn't necessarily pull
        to one side or the other, just jiggles a moment.  It's an on/off
        throttle thing, doesn't do it when braking.  </div>
      <div class="elementToProof"
style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, 
Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
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style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, 
Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
        I've checked the rear - everything seems tight, and all bushings
        have been replaced.  motor mounts are good, transmission tension
        rod/bushings are good.  little or no play in the front end, all
        new there too.    Front end alignment appears to be good. 
        Steering box is properly adjusted and has normal "play" for a
        cam and peg box as with my TR3's and Morgan + 4's.  </div>
      <div class="elementToProof"
style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, 
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        <br>
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style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, 
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          It isn't dangerous, but it doesn't feel right.  That said, for
        all I know, it's part of the "vintage healey experience".  I
        have 5 other vintage british sports cars and each has their own
        issues that are part of their charm.  </div>
      <div class="elementToProof"
style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, 
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        Would appreciate anybody's experiences thoughts.  </div>
      <div class="elementToProof"
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        Jonas</div>
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