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Eibach sway bar set?

I got Eiback sways installed today. I drove a little and definitely felt the difference comparing to stock. The car is felt more planted for all four corners and positively

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Old 10-16-2010, 11:50 PM   #1 (permalink)
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I got Eiback sways installed today. I drove a little and definitely felt the difference comparing to stock. The car is felt more planted for all four corners and positively less body roll during the turn and cornering . Both front and rear sways are adjustable. Here are the spec’s comparing to stock:

FRONT STOCK SWAYS are 26.5mm / 416 pounds per square inch

Eibach FRONT Sways are 32mm OD hollow tube with red color finished.
1st setting is 730 pounds per square inch
2nd setting is 900 pounds per square inch


REAR STOCK SWAYS are 24.3mm / 374 pounds per square inch

EIBACH REAR SWAYS are 29mm OD hollow tube with red color finished.
1st setting is 627 pounds per square inch
2nd setting is 741 pounds per square inch
3rd setting is 860 pounds per square inch

Mine is set for 1st setting on the front and 2nd setting on the rear.
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Old 02-20-2012, 07:23 PM   #2 (permalink)
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Originally Posted by zero View Post
I got Eiback sways installed today. I drove a little and definitely felt the difference comparing to stock. The car is felt more planted for all four corners and positively less body roll during the turn and cornering . Both front and rear sways are adjustable. Here are the spec’s comparing to stock:

FRONT STOCK SWAYS are 26.5mm / 416 pounds per square inch

Eibach FRONT Sways are 32mm OD hollow tube with red color finished.
1st setting is 730 pounds per square inch
2nd setting is 900 pounds per square inch


REAR STOCK SWAYS are 24.3mm / 374 pounds per square inch

EIBACH REAR SWAYS are 29mm OD hollow tube with red color finished.
1st setting is 627 pounds per square inch
2nd setting is 741 pounds per square inch
3rd setting is 860 pounds per square inch

Mine is set for 1st setting on the front and 2nd setting on the rear.
Can anyone help me out with how the settings on the sway bars effect the car's handling? ie: stiffer in the front cause more oversteer or undetsteer, same for the rear - also, not tracking the car, just spirited road driving at best. Doing The Dragon in April, what would be a good setting for a good run (not overly aggressive)? Thanks - Best responses get Rep!
UPDATE: Never Mind! I found the Thread : Suspension adjustments and how they affect handling
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Last edited by PaulZ370; 02-21-2012 at 03:38 PM.
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Old 02-22-2012, 01:23 PM   #3 (permalink)
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Originally Posted by PaulZ370 View Post
Can anyone help me out with how the settings on the sway bars effect the car's handling? ie: stiffer in the front cause more oversteer or undetsteer, same for the rear - also, not tracking the car, just spirited road driving at best. Doing The Dragon in April, what would be a good setting for a good run (not overly aggressive)? Thanks - Best responses get Rep!
UPDATE: Never Mind! I found the Thread : Suspension adjustments and how they affect handling
The stiffer the front bar is set the more understeer you will notice. Use the adjustment holes closer to the center for a stiffer rate. The outer holes will allow more flex and make the rate softer.

Depending on your set up, driving style and driving conditions, I would set up the car for understeer with a stiffer front setting first and softer rear setting. This will allow you to get used to the car without having too drastic of a change. You can increase the rear rate and decrease the front rate if you feel you need the car to rotate more.
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Old 02-24-2012, 06:34 AM   #4 (permalink)
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The stiffer the front bar is set the more understeer you will notice. Use the adjustment holes closer to the center for a stiffer rate. The outer holes will allow more flex and make the rate softer.

Depending on your set up, driving style and driving conditions, I would set up the car for understeer with a stiffer front setting first and softer rear setting. This will allow you to get used to the car without having too drastic of a change. You can increase the rear rate and decrease the front rate if you feel you need the car to rotate more.
Thanks Jackson - looking forward to the install. Anxious to see how much of a difference I'm going to feel behind the wheel
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Old 10-25-2010, 10:45 PM   #5 (permalink)
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Zero , thanks!

I ‘m just wondering why such a huge difference in OEM front bar numbers?

Stillen front sway bar hole is 720 lbs. and is only rated at 28.6% stiffer?

Eibach front 1st hole 730 lbs. just 10 lbs. difference and its rated at a whopping 176 % stiffer?

Hotchkis front, 1st hole is even larger by 29% for a total of 205 %

I also found interesting the #2 hole is almost equal in lbs. but really off in actual % numbers.

Stillen rear bar #2 , 920 lbs. 70% stiffer.

Hotchiks rear bar #2, ? lbs. 75% stiffer.


Eibach rear bar # 3 is only 860 lbs. 60 lbs. less then Stillen and is rated at 230 %, 160% higher then Stillen?

I’m I reading this wrong?

Thanks,

Alex

The Stillen numbers might have posted incorrectly. 28.6% stiffer will give 535 lbs/in. Should it be ~70+% stiffer? Someone might want to ask Stillen to confirm it.

Here is a conversion to percentage on Eibach.

OEM front : 26.5mm - 416 lbs/in
rear: 24.3mm - 374 lbs/in

Eibach
32mm OD front : 1st hole - ~176% (730 lbs/in) >>> ~76% stiffer than OE
2nd hole - ~217% (900 lbs/in) >>>>> 117 stiffer than OE

29mm OD rear : 1st hole - ~167% (625 lbs/in) >>>> 67% stiffer than OE
2nd hole - ~198% (741 lbs/in) >>>> 98% stiffer than OE
3rd hole - ~230% (860 lbs/in) >>>> 130% stiffer than OE
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