Sway Bar Sizing

Sway bar sizing

The
diameter of a sway bar determines it's stiffness. You can compare the
stiffness of your stock sway bar to a bar you are thinking of
purchasing by using a simple formula.

% stiffness compared to stock = (new diameter/stock diameter)^4

For example, if you have a GS-R with a 14mm rear sway bar and upgraded to a 22mm Type R rear sway bar you would calculate

(22/14)^4 = 6.10

This
means a 22mm sway bar is roughly six times as stiff as the stock sway
bar. Big difference don't you think? Subtract 1 at the end of that
equation and you'll get a figure telling actually how much stiffer the
bar is. So in that equation you'd come out with 5.10 or 510% stiffer
than stock.

It's important to make sure the company you are
buying your sway bar from includes proper mounting hardware. Stiff sway
bars can easily tear out of the chassis during a hard corner if not
mounted properly and your spring rates are too low to assist the bar in
minimizing suspension travel. From what I know off hand, Comptech's
sway bar is very good and comes with proper mounting hardware and will
not tear out of the chassis. Comptech even guarantees it. Also BSQ
makes a kit to allow a Type R rear sway bar to mount onto a non-Type R
chassis so it will not tear out. Check out BSQ's kit and install
instructions at http://geocities.com/bretq/swaybar_install.html

Stock sway bar specs

Integra model - Front / Rear diameter (mm)

86-89 All Models - 17.0 / 17.0
90-93 All Coupes - 23.0 / 14.7
90-93 All Sedans - 23.0 / 15.9
94-99 RS/LS/GS/SE Coupe - 22.1 / 12.9
94-99 RS/LS/GS/SE Sedan - 22.1 / 14.0
94-01 GS-R - 24.0 / 14.0
97-01 Type R - 24.0 / 22.0
00-01 LS/GS Coupe - 24.0 / 12.9
00-01 LS/GS Sedan - 24.0 / 14.0

Most
of the time a front sway bar upgrade is not needed as it is already a
good size on the 3G Integras. The only upgrade I would suggest for the
front most of the time are polyurethane bushings and leave it at that.
The rear sway bar is the most important upgrade you will ever do to
increase your handling so choose wisely.

Aftermarket sway bar specs

Company - Front / Rear diameter (mm)

3rd Generation Integra
Comptech - NA / 22.0
Eibach - 27.0 / 21.0
Lightspeed - 25.4 / 17.46
Mugen - 22.0 / 24.0
Mugen (Type R) - 26.0 / 26.0
Neuspeed - NA / 19.0
Skunk 2 - NA / 21.0
Suspension Tech - 24.0 / 19.0
Z Speed - 26.0 / 21.0


2nd Generation Integra
Addco - 22.2 / 19.0
Eibach - 21.0 / 19.0
Lightspeed - 25.4 / 22.2

1st Generation Integra
Addco - 19.0 / 19.0
Mugen - 21.0 / 23.0