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Old 03-24-2015, 08:06 PM   #1
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Need help picking sway bar(s)

I see different sizes and rates but have no idea how it all comes together. I am trying to find something that won't break the bank but still be reliable. Current suspention set up is Megan Track Coilovers. I will be buying a set of LCAs and camber bolts here soon I am aiming for -3.5F/-3R. I am trying to get parts that will make me more competative in STX.

I have heard good things about disconnecting the rear sway bar, anyone able to shed any light on this as well.

Thank you.
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Old 03-24-2015, 08:30 PM   #2
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Spring rates? Tires?

What's the car doing (or not doing) that you want to change?
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Old 03-24-2015, 08:41 PM   #3
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spring rates are 10K/8K.

also have 17x8 235/40/17 F and 17x9 255/40/17 R Federal 595 rs-r tires

i would say that i would want to get more grip. i am getting a lot of understeer at entry.
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Old 03-24-2015, 09:19 PM   #4
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Quote:
Originally Posted by blue_frs View Post
spring rates are 10K/8K.

also have 17x8 235/40/17 F and 17x9 255/40/17 R Federal 595 rs-r tires

i would say that i would want to get more grip. i am getting a lot of understeer at entry.
have you considered switching to a square wheel/tire set up instead?
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Old 03-24-2015, 09:28 PM   #5
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Quote:
Originally Posted by blue_frs View Post
spring rates are 10K/8K.

also have 17x8 235/40/17 F and 17x9 255/40/17 R Federal 595 rs-r tires

i would say that i would want to get more grip. i am getting a lot of understeer at entry.
You have alot of options at your disposal. Check out this link for a fairly exhaustive list:
http://www.thesmokingtire.com/2012/m...teeroversteer/

With Megan coilovers, you've got plenty of things to tweak. I'd start by softening up the front. You want more grip, and that usually comes from ground contact. You can set the rears to be more stiff, depending on your current setup.

For the sake of knowledge, I present crazy old Top Gear episode with a drifting Morris Minor:
[ame="https://www.youtube.com/watch?v=shwgNV36xFA"]Car Handling - Grip, Oversteer & Understeer explained by Tiff Needell - YouTube[/ame]
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Old 03-24-2015, 09:29 PM   #6
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Quote:
Originally Posted by blue_frs View Post
spring rates are 10K/8K.

also have 17x8 235/40/17 F and 17x9 255/40/17 R Federal 595 rs-r tires

i would say that i would want to get more grip. i am getting a lot of understeer at entry.
Do you have an anti-dive kit installed? This adds more caster, keeping camber in check on the inside wheel during turning, helping to reduce understeer. Just got mine for $135, w/free shipping. Getting it installed next Tuesday. This also gives better high speed stability.
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Old 03-24-2015, 10:26 PM   #7
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Quote:
Originally Posted by blue_frs View Post
spring rates are 10K/8K.

also have 17x8 235/40/17 F and 17x9 255/40/17 R Federal 595 rs-r tires

i would say that i would want to get more grip. i am getting a lot of understeer at entry.
If that spring rate is 10K front and 8K rear, plus with the tire size selection, I'd focus on fixing these two items rather then patching with a sway bar (to fix the understeer, which must be massive).
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Old 03-24-2015, 11:03 PM   #8
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Get a square wheel setup first, that's a big part of the understeer problem. Also, Federals are under 200TW and not legal this year FYI.
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Old 03-24-2015, 11:21 PM   #9
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Quote:
Originally Posted by BRGT86 View Post
have you considered switching to a square wheel/tire set up instead?
I have, and i may just give in and get the RPF1s.

Quote:
Originally Posted by KoolBRZ View Post
Do you have an anti-dive kit installed? This adds more caster, keeping camber in check on the inside wheel during turning, helping to reduce understeer. Just got mine for $135, w/free shipping. Getting it installed next Tuesday. This also gives better high speed stability.
also on my list of mods to get soon. thank you.

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Get a square wheel setup first, that's a big part of the understeer problem. Also, Federals are under 200TW and not legal this year FYI.
yea its just what my current set up is. im looking into getting the dunlop z2's or the brigstone re-11a's
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Old 03-24-2015, 11:26 PM   #10
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Quote:
Originally Posted by Shankenstein View Post
You have alot of options at your disposal. Check out this link for a fairly exhaustive list:
http://www.thesmokingtire.com/2012/m...teeroversteer/

With Megan coilovers, you've got plenty of things to tweak. I'd start by softening up the front. You want more grip, and that usually comes from ground contact. You can set the rears to be more stiff, depending on your current setup.
definatley going to check this site out. and thank you for the tip i will be sure to give that a try next event.
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Old 03-25-2015, 01:57 AM   #11
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Question to the more knowledgeable people here, could he swap the front and rear springs around to help balance the car out?
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Old 03-25-2015, 02:47 AM   #12
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Question to the more knowledgeable people here, could he swap the front and rear springs around to help balance the car out?
i'd don't think it is possible... as the springs front/rear might have different lenght and diameter
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Old 03-25-2015, 09:47 AM   #13
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Question to the more knowledgeable people here, could he swap the front and rear springs around to help balance the car out?
That was my first inclination too. With a bigger contact path in the back, having a front-biased setup is a bad combo.

The springs appear to be 1" shorter in the front than in the rear. You MIGHT be able swap springs, but it would slightly limit the travel in the rear.

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Old 03-25-2015, 01:21 PM   #14
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Originally Posted by Shankenstein View Post
That was my first inclination too. With a bigger contact path in the back, having a front-biased setup is a bad combo.

The springs appear to be 1" shorter in the front than in the rear. You MIGHT be able swap springs, but it would slightly limit the travel in the rear.

But he is on coilovers, so he could crank up the height at the bottom of the rear struts. I say you swap the springs and see how that goes. Or just buy some propper coilovers, or a decent spring and shock setup before you spend any more money trying to fix a problem that is most likely caused by the poor coilover setup.
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