Notices
Scion tC 1G Suspension & Handling Coilovers, Shocks, Airbags, Swaybars...

Rear or Front sway bar

Thread Tools
 
Search this Thread
 
Old 01-21-2007 | 02:34 AM
  #1  
ForceNut's Avatar
Thread Starter
Senior Member
5 Year Member
SL Member
 
Joined: Mar 2006
Posts: 171
From: Charlestown
Default Rear or Front sway bar

Hello all - I am thinking of adding either a rear or front sway bar. Which one would be more beneficial on a stock suspension?

Also, does the rear bar take up any space in the "trunk"? Can I get some pictures of the rear bar.. I really have no idea how it fits in.
Old 01-21-2007 | 03:42 AM
  #2  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

https://www.scionlife.com/forums/vie...680&highlight=

TRD has a rear. hotchkis has both. You can't mix and match. You either do a trd rear (less effective) or hotchkis front and rear (more effective). The hotchkis bars are more effective not because they are any better quality, but because they are MUCH stiffer than the trd. If you use a hotchkis rear and no front, the car will oversteer badly. If you use the front hotchkis and rear trd, the car will understeer badly. I personally think hotchkis bars are more for the track. Check out the other thread for numbers. The hotchkis are really beefy bars. But you cant mix and match. Don't worry about the front if you are doing a trd rear, you need it if you are doing the hotchkis rear. Balancing out the suspension is important, so you dont want to mess it up. The rear sway does a lot for the car.

BTW, it goes under the car. It doesn't go inside. You will never see the bar(s) unless you go under the car.

(I personally recommend using the trd bar (i do). 2 settings, street (less) and race (more stiff). The race is 64% stiffer than stock while the hotchkis is 338% stiffer than stock. I think the 338% may be overkill for street driving).
Old 01-21-2007 | 03:52 AM
  #3  
SquallLHeart's Avatar
Senior Member

10 Year Member

5 Year Member

SoCal tC Club
SL Member
Team N.V.S.
Scinergy
Scion Evolution
 
Joined: Oct 2004
Posts: 15,699
Default

rear sway bar

it's under the car.
Old 01-21-2007 | 03:57 AM
  #4  
captainlaziness's Avatar
Senior Member
10 Year Member
5 Year Member
Fail, INC
Club One
SL Member
 
Joined: May 2005
Posts: 10,213
From: Team Sharpie
Default

I agree with Spect2K3, the TRD bar is an excellent compromise between performance and comfort.
Old 01-21-2007 | 05:46 AM
  #5  
m6ar2cel6oTC's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 4,888
From: Miami
Default

i heard of oversteer. but whats understeer? i have the trd rear bar and i just bought the st front bar i wanna see how it will ride if i miss match both of them? the front is 24mm and i know the trd is 22mm. if it rides bad i will just buy the rear st bar which is 20 mm. i dont see why it wont work is all the rear bars are less stiffer then the front sway bars. we will see if it wont work right i will just sell the trd bar and get the reae st bar!
Old 01-21-2007 | 05:49 AM
  #6  
captainlaziness's Avatar
Senior Member
10 Year Member
5 Year Member
Fail, INC
Club One
SL Member
 
Joined: May 2005
Posts: 10,213
From: Team Sharpie
Default

Understeer is when you turn the steering wheel but the car "pushes" foreward. Understeer occurs when the front tires have less traction than the rear.
Old 01-21-2007 | 05:55 AM
  #7  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

Dont forget that you can adjust the trd bar from race to street and vice versa to help match the suspension.

Understeer is the opposite effect of oversteer. Rather than the car turning too much into a turn (more than the driver wants), the car won't turn enough and veer off of the intended path. To prevent understeer in that case, you would need to slow down so the car doesnt plow ahead uncontrollably while you are trying to get it to turn.

An extra stiff front sway (more so than the rear) will cause understeer. An extra stiff rear sway (moreso than the front) will cause oversteer. You need to find a balance. What is considered perfect is a neutral balance so all 4 tires would lose control at the same time rather than just the rear or just the front. That is considered optimal. The trd rear sway matched with the stock front is (according to trd), optimal. Now does this mean street or race? I dont know. I have a trd rear sway on race and no front sway, and my car tends to oversteer when pushed to limits. So yea, a slightly larger front sway might be nice, or to solve the issue w/o spending more money, I can switch it to the street setting - of course this second option lowers my handling capability. Personally, i'll deal with the slight oversteer b/c I don't want to spend money for 2 new sways. After all, there is no front sway to match the trd rear, so i'd have to get rid of it and start over with a new front AND rear sway that match each other....hope this helps you understand
Old 01-21-2007 | 06:01 AM
  #8  
m6ar2cel6oTC's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 4,888
From: Miami
Default

so what your saying is i should put the front st bar to the stiffes setting and the trd to the street setting so the back wont be as stiff and the front? or should i just put the front sway to the lighter setting so i wont understeer? cause i can do that then? cause if i put ther front to the stiffes and the rear to the lightest i would have oversteer so i figure if i put the front to the lightest i wont have that much oversteer and not that much understeer i dunno you tel me you seem like you know more then me on this topic or do you think i should just buy the back and sell my trd one?
Old 01-21-2007 | 06:08 AM
  #9  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

I'd sell the trd and buy the back one. The two were made to go together. Or even better, sell everything you have and get the hotchkis bars! lol You can play with it and see what works, but i'm not too familiar with that bar so I dont know what would even it out. But hopefully now you understand a bit more of how it works so you can experiment for yourself and decide what you want to do! For all I know, the st bar and trd rear sway on race setting could be perfect...I dunno!
Old 01-21-2007 | 06:16 AM
  #10  
m6ar2cel6oTC's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 4,888
From: Miami
Default

i guess i will just sell the trd bar! and get the st rear bar! any takers? on buying my trd bar lol
Old 01-21-2007 | 06:20 AM
  #11  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

Post it up in the PPC suspension section. I'm sure you wont have much trouble selling the bar.
Old 01-21-2007 | 06:32 AM
  #12  
m6ar2cel6oTC's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 4,888
From: Miami
Default

i would but i cant it wont let me cause i havent posted enough on this site lol? i will try to post it on yoursciontc.com i guess if i cant here wonder how much i will get for it its been on for like 3 months
Old 01-21-2007 | 06:41 AM
  #13  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

You need 50 posts before you can post in the PPC. You have that now, so list it up! Your last resort can be ebay though...
Old 01-21-2007 | 06:49 AM
  #14  
captainlaziness's Avatar
Senior Member
10 Year Member
5 Year Member
Fail, INC
Club One
SL Member
 
Joined: May 2005
Posts: 10,213
From: Team Sharpie
Default

Originally Posted by Spect2K3
Dont forget that you can adjust the trd bar from race to street and vice versa to help match the suspension.

Understeer is the opposite effect of oversteer. Rather than the car turning too much into a turn (more than the driver wants), the car won't turn enough and veer off of the intended path. To prevent understeer in that case, you would need to slow down so the car doesnt plow ahead uncontrollably while you are trying to get it to turn.

An extra stiff front sway (more so than the rear) will cause understeer. An extra stiff rear sway (moreso than the front) will cause oversteer. You need to find a balance. What is considered perfect is a neutral balance so all 4 tires would lose control at the same time rather than just the rear or just the front. That is considered optimal. The trd rear sway matched with the stock front is (according to trd), optimal. Now does this mean street or race? I dont know. I have a trd rear sway on race and no front sway, and my car tends to oversteer when pushed to limits. So yea, a slightly larger front sway might be nice, or to solve the issue w/o spending more money, I can switch it to the street setting - of course this second option lowers my handling capability. Personally, i'll deal with the slight oversteer b/c I don't want to spend money for 2 new sways. After all, there is no front sway to match the trd rear, so i'd have to get rid of it and start over with a new front AND rear sway that match each other....hope this helps you understand
Unwinding some steering angle, lightly using the brakes (NOT kicking the pedal), or letting off of the gas, or a combination of those actions will help the front tires regain traction.

I believe the tC does have a front sway bar from the factory.
Old 01-21-2007 | 06:59 AM
  #15  
m6ar2cel6oTC's Avatar
Senior Member
10 Year Member
5 Year Member
SL Member
 
Joined: Aug 2006
Posts: 4,888
From: Miami
Default

it does have a front sway bar from factory but not as big as the aftermarket ones. and i have already ordered the front and place the trd up for sell i will sell it on wednesday cause thats when i should be here says nopi
Old 01-21-2007 | 04:20 PM
  #16  
engifineer's Avatar
Senior Member
10 Year Member
5 Year Member
Scikotics
SL Member
 
Joined: Nov 2004
Posts: 9,731
From: Minneapolis, MN
Default

Personally, after having the TRD rear for quite some time, I dont know tht I would go with a stiffer setup for a daily driver.

Remember, sways work by removing steering independence. So while they reduce body roll, they can hurt the handling on rougher streets. So if you go super stiff and normally drive on bumpier city streets, you may see a decrease in corering ability.

So far the TRD is perfect for me on the street. I plan to get into some auto-xing for fun next summer, so there I could see a front and rear set being nice.

Also keep in mind the front is about 100 times harder to install than the rear, since you drop the subframe a bit to get it in. Not that it is an undo-able job, but you will want to give yourself much more time to install.
Old 01-21-2007 | 04:21 PM
  #17  
engifineer's Avatar
Senior Member
10 Year Member
5 Year Member
Scikotics
SL Member
 
Joined: Nov 2004
Posts: 9,731
From: Minneapolis, MN
Default

make sure you buy the rear to go with that front you have coming. If you just go stiffer up front you will have an understeer monster
Old 01-21-2007 | 04:51 PM
  #18  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

Originally Posted by captainlaziness
Originally Posted by Spect2K3
An extra stiff front sway (more so than the rear) will cause understeer. An extra stiff rear sway (moreso than the front) will cause oversteer. You need to find a balance. What is considered perfect is a neutral balance so all 4 tires would lose control at the same time rather than just the rear or just the front. That is considered optimal. The trd rear sway matched with the stock front is (according to trd), optimal. Now does this mean street or race? I dont know. I have a trd rear sway on race and no front sway, and my car tends to oversteer when pushed to limits. So yea, a slightly larger front sway might be nice, or to solve the issue w/o spending more money, I can switch it to the street setting - of course this second option lowers my handling capability. Personally, i'll deal with the slight oversteer b/c I don't want to spend money for 2 new sways. After all, there is no front sway to match the trd rear, so i'd have to get rid of it and start over with a new front AND rear sway that match each other....hope this helps you understand
I believe the tC does have a front sway bar from the factory.
lol, i was refering to an aftermarket front sway that I dont have. its not like I went in there and removed the factory one for the heck of it! lol
Old 01-21-2007 | 07:16 PM
  #19  
captainlaziness's Avatar
Senior Member
10 Year Member
5 Year Member
Fail, INC
Club One
SL Member
 
Joined: May 2005
Posts: 10,213
From: Team Sharpie
Default

^^Oh, 'cause that'd be a strange way to try and take weight off the car.
Old 01-21-2007 | 07:30 PM
  #20  
Spect2K3's Avatar
Senior Member
10 Year Member
5 Year Member

SL Member
Team ScioNRG
 
Joined: Sep 2005
Posts: 3,201
From: Norwalk, CT
Default

lol



All times are GMT. The time now is 06:43 AM.