Ok the car is my 89 IROC-Z. I recieved my Spohn 36/24mm sway bars last winter and I installed the rear which looked thicker than the stock piece. I've been running with no front sway bar since I hit the roads this spring. Just now I was about to install my front new sway bar and I took out a tape measure and checked a few specs. My new Spohn "36mm" bar is 1-1/4" in the center. My IROC-Z bar is 1-3/8"(The bushings have a 34 molded into them also) and in some points near the ends it's actually closer to 1.5". So On to the rear sway bars. Both the spohn and stocker are identical in size.

On top of this, my rear swaybar is touching the bottom of the rear axle/cover...Anyone else experience this?

Does anyone have actual specs on these bars? Should I keep my front stock bar or is the Spohn stronger by design some how? Thanks in advance!

 

If the rear bar is touching the housing, you need to shift it a little bit. Or make sure it isn't upside down.
http://www.transamws6.com/pics/05-2003/fuelpump1.jpg

 

Denny,
Bigger isn't always better. Spohn could be using a different alloy to allow them to make a smaller, lighter, but better, stiffer sway bar. A sway bar is like a spring, any combination of alloys and diameters can end up with the same torsional rating. Check with Spohn.

 

Denny I know how to fix the rear sway bar, I'll help ya with it sometime this weekend.

 

Yeah Joe I'm assuming you did something wrong on that install!! haha

Al, I definately thought about that but the size alone threw me off. Spohn advertized these as 36MM/24MM when I bought them and just knowing that the largest ever used on a thirdgen was 36mm, it was scary to see that the stocker was bigger...I'll be running it and seeing how the car balances out either way. Every car is different ad it's going to take a little effort to get my cars front and rear to be stable in a turn since it almost had Big N' Littls on it and different brands of rubber to top it all off

 

where does spohn advertise it as 36MM, it has an inch size on it, which I believe is actually closer to 34MM, which fits the bushing they ship with the sway bar, the rear is 24 MM as far as I know, and they are made of chrome moly, which is pretty damn strong and is considered one of the better compounds out there for suspension/chassis work. The stock bar is probably aluminum or steel, which is not very good/solid so to speak, well not as much as chrome moly, hope this helps a little.

 

Thanks Lungz.. Spohn actually used to advertize them as 36/24mm. The Inch measurements are newer. I ordered new endlinks and bushings today and hopefully they are the right size(from spohn also). It'll be nice to see how the car handles. Thanks again!