I currently have a 15/16" sway bar up front with SHOT suspension (bushings...etc.) and picked up a used 1" for $30.

I have to overhaul the front end before I can even compare the performance of the two sway bar sizes.

I was wondering if anyone here upgraded their sway bar by only 1/16" and made any difference???

-Matt

A 1" bar is 29% stiffer than a 15/16" bar, using this formula:

(new bar size / old bar size)^4 (note ^4 is an exponent)

A 1-1/8" bar is 208% stiffer than a 15/16"
A 1-1/4" bar is 317% stiffer than a 15/16"

A 1" bar is 29% stiffer than a 15/16" bar, using this formula:

(new bar size / old bar size)^4 (note ^4 is an exponent)

A 1-1/8" bar is 208% stiffer than a 15/16"
A 1-1/4" bar is 317% stiffer than a 15/16"

Thanks. Just curious, what formula is that? Torsional stiffness? Amazing what a 1/16" can do.

-Matt

Thanks. Just curious, what formula is that? Torsional stiffness? Amazing what a 1/16" can do.

-Matt

It's the formula for the torsional stiffness on a solid bar. It doesn't take into account the metallurgy, end link leverage or the bushing durometer. When you add 1/16" to a 15/16" bar, it's 1/16" on the outer edge and occupies more area than the previous 1/16". It increases the cross-sectional area by about 13%.

what formula is that? Torsional stiffness? Amazing what a 1/16" can do.Yes, torsional. :)

It's amazing how much I forgot from statics class.