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<div class="moz-cite-prefix">On 10/1/2021 10:22 AM, jim via Tigers
wrote:<br>
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<p class="MsoNormal"><span lang="EN-CA">I’m definitely a layman
but like to tweak things !!!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">My car has the 1976
suspension tuning added holes to fully relocate the upper
A-arms and I’ve kept that setup. Other than minimal shimming
for castor the camber will NOT go to zero ( or positive) and
I have about 1 degree negative … I have a unique brake setup
with 11” Porsche rotors on adapters and Wilwood Dynalite
calipers behind 14” 3 piece wheels. I changed the steering
arms to the MGB one when I installed the Mazda power
steering. The mounting holes for the MGB arms are parallel
so require a spacer to mount them in stock location. I saw
a potential ( because my Wilwood brake mount ) to move the
steering arm outboard but that would also require the
caliper and rotor to move the same amount. I managed to move
it all outboard ¼” and with the slight offset of the MGB
arm, it’s almost ½” gain in reality. I bolted the wheels
back on and it ‘seemed’ to spin freely so I took it for a
drive and heard a slight ‘ticking’ in the wheels. It turned
out that both wheels had a couple of stick on wheel weights
on the inside and the calipers were just grazing the as they
are about 1/8” thick. A couple minutes with the grinder
shaved off enough and its never been a problem since! I did
the math back then and can’t remember exactly but it
certainly ( on paper ) improved the ackerman<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Maybe I shouldn’t have
cancelled my “hokanson’ front end order years ago but what
would I do with my free time ?? lol!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Jim<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">B382000446</span><span
style="font-family:"Segoe UI Symbol",sans-serif"
lang="EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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Guy's, It's been a long long time (early 70's) since I wrote that
STOA Tech Tip on upper A-arm relocation. I haven't used it years
because the switch to radial tires pretty much eclipsed the
advantage it showed when running bias ply tires. Bill Martin has
been developing a stock based front suspension relocation of the
disc and rotors outward (to give room to bent the steering arms
outward) to aid in the reduction of the Ackerman problem, but it
requires much more sophistication and new hardware. Doane's
solution was good on the track but lacking strength and durability
for street application.<br>
<pre class="moz-signature" cols="72">--
Tom Hall
ModTiger Engineering LLC
5712 San Luis Court
Pleasanton, CA 94566
(925)462-3876
<a class="moz-txt-link-abbreviated" href="mailto:modtiger@comcast.net">modtiger@comcast.net</a>
<a class="moz-txt-link-freetext" href="http://tigerengineering.net/">http://tigerengineering.net/</a> </pre>
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