Vintage Mustang Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
15 Posts
Discussion Starter #1
Hey Folks,

first of all, I`d like to say "Hello" to all of you.
I am a new member in this forum.
My name is Lars, I live in germany and I am driving a 66 Mustang Coupe C-code without powersteering. Man - I love that car!!
So, here is my problem:

My caster is: -3,5 left and -2,5 right.

Now I`d like to have a positive caster +1 to +2 degrees.
I bought some shims to adjust my caster.
But first a took a look in my mustang shop manual.
There is one limitation which brings me to my limits! Here it is:

"A 1/32-INCH CHANGE OF SHIM THICKNESS AT EITHER BOLT WILL CHANGE THE CASTER ANGLE APPROXIMATELY 1/2 DEGREE. THE DIFFERENCE BETWEEN THE SHIM STACK THICKNESS AT THE TWO BOLTS SHOULD NOT EXCEED 1/16-INCH.

So, this means I can adjust my caster by a maximum of +/- 1 degree?
Or did I misunderstood something?
What happens, if I put more than 1/16 difference between the front and rear bolts? Will I get a dangerous ride?
I need at least 7/32-inch difference to get a positive caster.

By the way, the following things are new:

-strut rod bushings
-lower control arm
-ball joint upper control arm
-tie rods
-brakes (drums, shoes, springs, hoses, cylinders)
-sway bar end link
-shocks

Thanks for your help

Lars
 

·
Registered
Joined
·
2,273 Posts
Lars,
Welcome to the forum.
I understand your question, but I do not know if the 7/32" difference would cause a problem or not -

Also, did you do the 1 inch Arning drop on the upper control arms?

I would suggest checking here -
Opentracker Racing Products - Contact

John has a lot of experience with this, and should be able to help.
 

·
Registered
Joined
·
2,050 Posts

·
Registered
Joined
·
21,011 Posts
I think thje reason for not adding more shims is because as you increase caster, the angle between the shim and control arm shaft increases and the two don't mate evenly. In a suspension book I have if I recall correctly they said to use spacers instead of multiple shims and mill the end to the angle to mate with the shaft.

As suggested the Arning drop, down 1" and back 1/8" on the upper control arm mounting holes. You can also play with the control arm threaded end and and strut arm as well.
 
1 - 4 of 4 Posts
Top