Has anybody every heard of a 1 1/2 inch front sway bar(38mm)? I measured the bar over and over with a measuring caliper and it always comes to 1 1/2 inch. I've even measured different parts of the bar and they're always 1.5 inch (comes out to 38mm!). I know there is going to be somebody out there that insists that my bar is 36mm, but no it's not! I even pulled out the mounts and measured the diameter and it's 1 1/2. The reason this is such a big deal is that I am going to need a need swaybar mount and nothing is that big. Just for reference, my back bar is exactly 1 inch or 25mm. My car is a 1989 IROC Convertible.
Also there was some other guy that had the same problem as me. I think his name was ROCHEAD.

 

You prolly got aftermarket bars on it.

 

Maybe it's been painted or has a good coat of rust on it. Use some emery cloth or sand paper and sand it to bare metal and re-measure in mm(no conversion). A good spot to measure would be at the bushing(remove the bushing and measure) I don't know of any aftermarket bar that big. What do the end-links look like? What do the bushings look like? Aftermarket bars usually use a solid end-link(nut on top and bottom with no threads showing) with poly bushings, or a solid mount(no bushings). If the endlinks are stock, I'd say it's a stock bar. 36mm hollow.


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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro

[This message has been edited by 82camaro (edited February 24, 2001).]

 

Hey finally someone with the same bar as me. Actually it measures alittle bit under 11/2 but not by much. Try finding the serial number , its in the middle of the bar, mine reads X189 or XI89. I can't get any response from GM on them either. I can't find anyone with polyurathane bushings that big, so im gonna take the 36mm i have and drill them out. My car is also an 89, but hard top and has the 350.

 

36mm is 1.4173228346456692 inches.


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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro

 

I have a serial number on the bar and I think it says X338 or something along those lines.

 

I know this is a long dead topic, but I too have the 38mm bar on my car and performance suspension here in town does not have a bushing big enough. Anyone know where to get one at this point? (Aside from factory).

-SB

 

For as long as I have been on boards the largest I have ever seen was a 36MM. Only place I know carries those bushings are TDS or Gulf Strand I to thought I had a larger bar under I accually sanded it all down and got the rust and paint off. It was then a true 36 and this came on a 89 Formula 350 Hardtop

 

Craziness. I'm in AZ, so rust really isnt a problem, and I did measure the bar right at the bushing mount, so I dont think there would be enough paint there to throw off the measurements 2mm, but I suppose anything is possible.

I can use the stock bushings for the time being and sand it down later and see what I can figure out.

The car is an 89 IROC that had the 350.

 

My X189 is a 36 mm hollow bar, it measures 36.01mm and 36.03mm in a different place. If it has a serial number on it, it is not 38mm.

 

What kind of caliper are you using, are you using it correctly?

 

This thread was dug up from the dead.

That bar turned on my vert turned out to be a 36mm when I replaced the bushings.

 

Using the caliper that they had at autozone. Pretty sure I was using it correctly, but I have been wrong before. Ill order the 36s and post back the results.