Installed: F-Sport Rear Sway Bar... - ClubLexus - Lexus Forum Discussion


IS F (2008-2014) Discussion topics related to the IS F model

Installed: F-Sport Rear Sway Bar...

Reply
 
 
 
Thread Tools Search this Thread
Old 11-19-08, 07:37 AM   #1
Supraman16
Lead Lap
Thread Starter
iTrader: (4)
 
Join Date: Apr 2001
Location: Burbank, CA
Posts: 541
Thanked 1 Time in 1 Post
Default Installed: F-Sport Rear Sway Bar...

Well, I was getting a little tired of the body roll and understear that the stock IS-F had. I heard that the F-Sport rear sway bar was larger, 19mm vs 16mm for the stock rear sway bar, so decided to give it a shot. Sure enough it definately reduced the body roll and made the F much more neutral and straighter on tight turns. I definately recommend it for those who want to tweek the handling on their IS-F. Now I'm just waiting for some strut braces to be made by some company...Darshana S...
Supraman16 is offline   Reply With Quote
Old 11-19-08, 07:39 AM   #2
kyang91
Lexus Champion
iTrader: (5)
 
kyang91's Avatar
 
Join Date: Jan 2008
Location: Indiana
Posts: 2,257
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Wow.....sounds pretty nice I wish they have something like that for the 3GS......
kyang91 is offline   Reply With Quote
Old 11-19-08, 07:48 AM   #3
ISF FAN
Pole Position
 
ISF FAN's Avatar
 
Join Date: Sep 2008
Location: california
Posts: 246
Thanks: 0
Thanked 0 Times in 0 Posts
Default

How much was it installed?
ISF FAN is offline   Reply With Quote
Old 11-19-08, 08:36 AM   #4
caymandive
11 Second Club
iTrader: (2)
 
caymandive's Avatar
 
Join Date: Dec 2005
Location: N.Va
Posts: 4,000
Thanked 5 Times in 4 Posts
Default

So the F-sport rear bar fits the IS-F? Very cool!
caymandive is offline   Reply With Quote
Old 11-19-08, 11:04 AM   #5
avgj0F
Lead Lap
iTrader: (2)
 
avgj0F's Avatar
 
Join Date: Aug 2008
Location: CA
Posts: 625
Thanked 4 Times in 3 Posts
Default

15 min to install w/ a lift. Dealer most likely gonna ring it up for an hour labor.

Quote:
Originally Posted by ISF FAN View Post
How much was it installed?
avgj0F is offline   Reply With Quote
Old 11-19-08, 12:57 PM   #6
VelvetBlue
Lead Lap
 
VelvetBlue's Avatar
 
Join Date: Feb 2005
Location: CA
Posts: 508
Thanks: 0
Thanked 0 Times in 0 Posts
Default

There was another thread on this a while back. The thing that I don't understand is that if a slightly larger sway bar would make the car handle better why didn't the IS F come with it already. Can anyone explain that?
VelvetBlue is offline   Reply With Quote
Old 11-19-08, 01:38 PM   #7
rominl
exclusive matchup
iTrader: (4)
 
rominl's Avatar
 
Join Date: May 2002
Location: Lovely OC
Posts: 81,178
Thanked 18 Times in 18 Posts
Default

Quote:
Originally Posted by VelvetBlue View Post
There was another thread on this a while back. The thing that I don't understand is that if a slightly larger sway bar would make the car handle better why didn't the IS F come with it already. Can anyone explain that?
theoretically having less roll doesn't mean better handling, it's all about compensation, a bit roll can be helpful. i guess the only way is to have a real track time and see which one gives better timing (same car w/ w/o, same driver, etc...)
rominl is offline   Reply With Quote
Old 11-19-08, 02:33 PM   #8
VelvetBlue
Lead Lap
 
VelvetBlue's Avatar
 
Join Date: Feb 2005
Location: CA
Posts: 508
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks, Henry. There really isn't much body roll on the IS F. I bought the larger sway bar a while back but haven't decided whether to install it yet.
VelvetBlue is offline   Reply With Quote
Old 11-19-08, 02:57 PM   #9
rominl
exclusive matchup
iTrader: (4)
 
rominl's Avatar
 
Join Date: May 2002
Location: Lovely OC
Posts: 81,178
Thanked 18 Times in 18 Posts
Default

Quote:
Originally Posted by VelvetBlue View Post
Thanks, Henry. There really isn't much body roll on the IS F. I bought the larger sway bar a while back but haven't decided whether to install it yet.
mark you should really try it out and give your feedback, since you do drive your cars hard and with your previous collections, i think you can give a good review

i forgot the years already, but back in a year, something like a cobra had thinner sways than the gt. that's another proof that maybe the thinner sway gave a better balance to the car

but i don't deny though, maybe for normal street driving, a thicker sway would give less rolls and thus better feeling
rominl is offline   Reply With Quote
Old 11-19-08, 02:59 PM   #10
BigMikeISF
Lexus Champion
 
BigMikeISF's Avatar
 
Join Date: Jun 2008
Location: Dallas, Texas
Posts: 2,161
Thanks: 0
Thanked 1 Time in 1 Post
Default

^^I'm with you VelvetBlue. I have it, just haven't installed it yet. I would like to hear a really good review about whether or not it makes that much of a difference, etc. etc.
BigMikeISF is offline   Reply With Quote
Old 11-19-08, 04:38 PM   #11
7Msyntec
Driver School Candidate
 
Join Date: Oct 2008
Location: BC
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Another point to consider is that manufacturers will always dial in understeer to their finished product regardless if it's a Cavalier or an IS-F or M3 because it's safer this way on the streets etc. It's just a question of how much understeer they want to dial in. Your mom's Cavalier will always have more understeer dialed in because it was made for mom, while the IS-F will be more balanced and hence have less understeer or understeer at the limit. This is true for almost all performance cars. Just take a bunch of reviews of performance cars from various R&T mags and the specs will always say "mild understeer".

Vehicle dynamics, engine placement, etc also have an impact on understeer. That is why cars that have the engine placed in front (or closer to) of the front suspension will naturally understeer more (VW's and pre 2008 Audi's etc.). Check out underhood pics of a Honda S2000. It is one of the best handling cars and part of that reason is because, right out of the box, the engine is almost sitting in the middle of the car. Sway bars and other suspension tricks help compensate and for these limitations or fine tune how the manufacturer wants it to behave on the road.

Cheers
7Msyntec is offline   Reply With Quote
Old 11-19-08, 05:56 PM   #12
foup
Driver
 
Join Date: Jul 2008
Location: CA
Posts: 197
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Would this affect stability control (VDIM)?

I am not too knowledgeable about VDIM in the F but Lexus says it will play with the car throttle and brakes to avoid loosing control (such as prematurely leaving the tarmac) and it uses various inputs for that (such as accelerometers) and obviously a piece of software.

Am I right thinking that the software -which is probably conservative- just makes a deduction about an imminent loss of control assuming standard grip from the tires, lateral acceleration and speed? If so, when you get to reach that speed/lateral acceleration that's going to become overwhelming for your tires then VDIM acts? If I am correct then the dynamics of the car are obviously factored in the software and changing such dynamics may trick the software either way (kicking in VDIM to early or too late)?

Anyone familiar with how VDIM actually work?

Thanks.
foup is offline   Reply With Quote
Old 11-19-08, 06:29 PM   #13
wrxtoisf
Driver School Candidate
 
Join Date: Oct 2008
Location: ny
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
Default

what body roll the car is rocksolid! but, i have had understeer in sweepers and thought per haps better tires and fater swaybar would help ,but thats all id add.
wrxtoisf is offline   Reply With Quote
Old 01-28-09, 09:49 AM   #14
oski83
Driver
 
Join Date: Jan 2009
Location: NJ
Posts: 119
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Dealer said F-Sport Sway bars were in the 09' ISF?! I was questioning it and thought what else is "F-Sport" that is NOT ont he car? (ex-Brembos are already on it)

Anyone have input for a noob? Thanks
oski83 is offline   Reply With Quote
Old 01-28-09, 10:34 AM   #15
Supraman16
Lead Lap
Thread Starter
iTrader: (4)
 
Join Date: Apr 2001
Location: Burbank, CA
Posts: 541
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by oski83 View Post
Dealer said F-Sport Sway bars were in the 09' ISF?! I was questioning it and thought what else is "F-Sport" that is NOT ont he car? (ex-Brembos are already on it)

Anyone have input for a noob? Thanks
As far as I know that is not correct...the only changes to the 09 IS-F are interior changes, nothing to the engine or the suspension for that matter...Darshana S...
Supraman16 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
2014 CT200h F-Sport Sway bar set noycy003 CT 200h Model (2011-present) 17 12-08-17 03:32 AM
2012 ISF F-Sport Sway Bar Zosopage IS - 2nd Gen (2006-2013) 2 08-11-17 01:02 PM
Anyone try an ISF front sway bar on an IS350? SeanIS350 IS - 2nd Gen (2006-2013) 9 06-24-17 09:09 AM
IL WTB: Rear F Sport or Sikky Sway Bar for ISF hydronos 2Gen IS250 / IS350 / IS-F Classifieds (06-13) 0 04-28-17 12:44 PM
Pic of the new setup... Simmsled GS - 3rd Gen (2006-2011) 29 03-09-16 05:34 PM


Tags
bar , bars , changing , correct , es300 , fsport , install , installation , is300 , is350 , isf , lexus , rear , sway , understeer

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 11:57 AM.


Copyright © 2000-2017 Internet Brands, Inc. All Rights Reserved We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: