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Progress Technology Rear Anti-Sway Bar Review

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Old Dec 20, 2006 | 08:26 PM
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RollOver360's Avatar
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Progress Technology Rear Anti-Sway Bar Review

Well I got it in the mail tonight, put it on in 15 minutes, didnt jack the car up, probly would of been easier but I made it. All I did was jack the sway bar up in place, then simply bolted it on. Took it for a test drive and what a HUGE difference. Before when I went through the turns, the body roll was as bad as my fathers Blazer but now, its almost eliminated. I pushed it pretty hard, had the tires sqeel a lil bit but there was zero body roll. I would definately suggest this to all 2.2 guys/gals. Just so you guys know it is 22mm thick.

later
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Old Dec 20, 2006 | 08:40 PM
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Oh yea, I slapped this on my SS S/C, completely different car! I absolutely love how well engineered this thing is, the balance of the car is so much better, the ride is even more comfortable for me now. I highly recommend this thing, its the best thing I've done to the SS.

Ryan
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Old Dec 20, 2006 | 09:28 PM
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Not to ruin the subject, but this belongs in Suspension not 2.2 section.

But glad to hear the results. I've been thinking about this, but I don't have much body roll since i'm lowered.
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Old Dec 20, 2006 | 09:38 PM
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How much did it cost you?
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Old Dec 20, 2006 | 10:00 PM
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Moved to suspension.

I'm holding out for the Eibach kit which should be around in the spring.
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Old Dec 21, 2006 | 12:11 PM
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It cost me $155 on eBay brand new, cheapest I found. http://cgi.ebay.com/ebaymotors/ws/eB...1153410&rd=1,1

I read that it wouldn't really do anything for the SC because the stock bar is like 20mm or something.

Later
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Old Dec 21, 2006 | 04:51 PM
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would this good for the 2.4?
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Old Dec 21, 2006 | 04:54 PM
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Do you have the solid rear in The 2.4?
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Old Dec 21, 2006 | 06:26 PM
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Nice, I have been thinking about getting one of these, do you have a front strut bar as well?
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Old Dec 21, 2006 | 06:48 PM
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yes i have a solid rear but i wasnt sure if the 2.4 was equipped with a stock sway in the back
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Old Dec 21, 2006 | 07:05 PM
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Originally Posted by tonio5555
Nice, I have been thinking about getting one of these, do you have a front strut bar as well?

No, I dont have a front strut bar because I read that it would be a waste of money because the shock towers are so close to the firewall, so there isnt much flex. I thought about getting a lower anti-sway bar but I read that you would have to unbolt the engine or something in order to install it, so I passed.

later
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Old Dec 21, 2006 | 07:21 PM
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You have to drop the front suspension cradle to install the front bar. Its not that hard to do realy.

Can be done in about 3 hours.

Later
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Old Dec 21, 2006 | 07:23 PM
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Originally Posted by Halfcent

I'm holding out for the Eibach kit which should be around in the spring.
Me to. But Iv heard that the front bar is going to be the same size as the stock SS front bar and so it would be useless to me.

But I hope its bigger then the stock one is.

Later
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Old Dec 21, 2006 | 11:13 PM
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Originally Posted by RollOver360
It cost me $155 on eBay brand new, cheapest I found. http://cgi.ebay.com/ebaymotors/ws/eB...1153410&rd=1,1

I read that it wouldn't really do anything for the SC because the stock bar is like 20mm or something.

Later
I looked under the rear of my sssc and don't see a rear sway bar,There is a bar inside the rear swing arm. but nothing like what you installed.
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Old Dec 22, 2006 | 06:47 PM
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did the install loosen the car up? I could care less about body roll, but this thing pushes like a front wheel drive car.
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Old Dec 22, 2006 | 07:49 PM
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Originally Posted by YSUsteven
did the install loosen the car up? I could care less about body roll, but this thing pushes like a front wheel drive car.

Didn't really notice anything as far as pushing or pulling, I was more concerned with body roll. Scares me a little when the body starts to roll through the turn since I rolled my car.

later
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Old Dec 22, 2006 | 07:58 PM
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Well I just read "Suspension basics 101" by badmunky and I found this while I was reading it "Progress Rear Anti Sway Bar. (22mm) This is more for the SS cars and should not be put on the base unless the front has been upgraded to atleast a 22mm bar as well." Ooopps, o well. Hopefully everything should be fine. Badmunky why didnt u say anything and correct me? lol.

later
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Old Dec 25, 2006 | 04:18 PM
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Originally Posted by RollOver360
Didn't really notice anything as far as pushing or pulling, I was more concerned with body roll. Scares me a little when the body starts to roll through the turn since I rolled my car.

later
Push refers to "the front tires want to slide so the car doesn't turn as well"

Loose refers to "when turning, the rear tires want to slide so you end up doing a 180."

My car pushes, mostly due to the 60/40 weight. Did the bar help the car turn easier?
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Old Dec 26, 2006 | 11:26 AM
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so does anyone know for sure if both SS models use the same front sway bar stock?
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Old Dec 26, 2006 | 11:47 AM
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Originally Posted by RollOver360
Well I just read "Suspension basics 101" by badmunky and I found this while I was reading it "Progress Rear Anti Sway Bar. (22mm) This is more for the SS cars and should not be put on the base unless the front has been upgraded to atleast a 22mm bar as well." Ooopps, o well. Hopefully everything should be fine. Badmunky why didnt u say anything and correct me? lol.

later
I've heard otherwise that a rear bar alone is fine for our cars unless you're REALLY taking the turns hard and fast. IDK though.. physics was never my thing.
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Old Dec 26, 2006 | 04:18 PM
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Originally Posted by YSUsteven
Push refers to "the front tires want to slide so the car doesn't turn as well"

Loose refers to "when turning, the rear tires want to slide so you end up doing a 180."

My car pushes, mostly due to the 60/40 weight. Did the bar help the car turn easier?
My question exactly.

This is from Wikipedia (not the most reliable source on the 'net, but adequate for this case):

"A front-heavy vehicle with low rear roll stiffness (from soft springing and/or undersized or nonexistent rear anti-roll bars) will have a tendency to terminal understeer: its front tires, being more heavily loaded even in the static condition, will reach the limits of their adhesion before the rear tires, and thus will develop larger slip angles. "

Our cobalts are front-heavy vehicles, being FWD. From the above we can extrapolate that adding rear roll stiffness (by adding a rear anti-sway bar, or replacing an existing one with a stiffer - i.e., bigger - one) will decrease push (understeer) and increase oversteer (loose). How much oversteer you want is a matter of taste, but too much means that when you loose it the car will swap ends. I like oversteer, probably because I grew up driving close-coupled RWD race cars.

My SS NA with the FE3 suspension isn't bad at all, but a bit less body roll would be nice (and an anti-sway bar generally doesn't stiffen up the spring rates). My old Gen I Neon ACR showed that a FWD car can actually feel like a RWD when it comes to loose - it was nice and tail happy, almost to a fault.
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Old Dec 26, 2006 | 06:58 PM
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I agree with everything LewiSS said above.

A FWD car can be set to be "loose" but I'd prefer the term oversteer, loose to me refers a lot to oversteer induced by rwd (keep thinking NASCAR terms and how they will slide with the back end out around corners if the car is too loose). A rear sway will help body roll a little since it will try and keep the rear beam flat however to fix body roll you really should get stiffer springs.

With all that being said, the rear bar should help you be more agressive on turns and will provide a bit more traction where the car before would want to push. I know on the SS/SC if you drive it correctly you can induce a little bit of oversteer with the right tire preasures, this will definately allow the car to rotate a bit more, especially on those auto-x courses.

I set up my Mk4 GTI to oversteer with a flick of the wrist and it was a beautiful handling car, I could do a 90 degree turn with the back end out modulating with the throttle. Hopefully one day the SS will be there....
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Old Dec 26, 2006 | 10:33 PM
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In order to really love this car I would suggest a strut bar when you purchase the sway bar as this results in a great balance between understeer and oversteer, you will even feel as if the middle of the car is a pivot when these things are bolted in, it's an amazing difference.
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Old Dec 26, 2006 | 11:00 PM
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can't agree more the dc strut bar in the front really does help the cornering on a SS/SC. I wan't the rear bar to get this car to free up a little more in the corners though. I grew up on RWD and I am having trouble adjusting to FWD. With the rear sway bar on an SC car will that achieve what i'm looking for?
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Old Jan 4, 2007 | 07:48 AM
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mine should be here monday! cant wait.
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