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Old 06-05-2001, 05:35 PM   #1
Darryl
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Post how much bar is too much?

first off, where's the seach link?
getting to it, can anyone tell me how much anti-roll bar is too much (too thick, stiff) for the stock suspension of the WRX? I once owned a car where he front bar (Suspension Techniques)actually ripped the suspension at both mounting points. $$$$ to repair, and reinforce. I don't want to go through that again. I've read in these posts that 22mm in the rear is too much bar, and makes the WRX spin too easily. Well, I don't want that characteristic either. I just want a bit more "anti-roll", but basically the same f/r balance.
thanks
darryl
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Old 06-05-2001, 05:39 PM   #2
b_tapper
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Post

Well a stock WRX has a 20mm rear swaybar...

Brian
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Old 06-06-2001, 04:41 AM   #3
Darryl
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B_,
I think the rear bar was actually measured at 17mm. If, in fact, you are correct, I still wonder what a thicker bar would do to the frame.
regards,
darryl
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Old 06-06-2001, 05:22 AM   #4
AndyHidley
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Post

A stock 4 door sedan WRX 2002 has a 20mm in the front and rear.. Get a 22 front and an adjustable rear bar. That way you can "adjust" the roll to your liking. There is also stiffer mounts available for the rear bar manufactured by whiteline, check their web site for a pic. I put a 22 on the front and an adj on the rear. Setting it up soft it handles like stock with slightly less roll, middle setting it handels much better on the road. And also the stiff setting for autocross!!!!
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Old 06-06-2001, 08:54 AM   #5
Darryl
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Post

Thanks Andy,
did you go with the Whiteline bars too? If so where'd you buy them?
regards,
darryl
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Old 06-06-2001, 08:56 AM   #6
Darryl
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Post

By the way,
I still need to know if those bars are to stiff.
darryl
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Old 06-06-2001, 09:45 AM   #7
Spectre23
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Question

I am just wondering why everyone buys Whiteline bars instead of the MRT bars when they are the exact same thing and MRT is something like 30-40% cheaper. Personally, I have the stock front and 20-24mm adjustable, but then mine is a RS and I love oversteer.
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Old 06-06-2001, 10:04 AM   #8
RallyImprezive
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I don't order from MRT because the whole shipping cost, waiting time, and payment BS is to confusing and time consuming...maybe others feel the samw way? I dunno..
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Old 06-06-2001, 10:12 AM   #9
Spectre23
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I ordered a 22mm front bar and 20-24mm rear bar from them. Total cost with shipping was around $250 and it got here in less than 2 days. I don't understand the problem.
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Old 06-06-2001, 02:27 PM   #10
Tkacik
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Post

Isnt MRT an aussie company......2 days to Utah...Wow thats impressive!
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Old 06-06-2001, 02:29 PM   #11
Spectre23
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Post

The time differential is in their favor. I order it here at 3:00 my time and that means they can get it out by that time the same day their time. And all of their stuff is sent Fed Ex. So yes, it is very impressive. Whiteline is an Aussie company too. It is my understanding that they are like 1 block away from each other. Whiteline just has a better dealership network set-up.
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Old 06-06-2001, 04:20 PM   #12
Darryl
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Post

OK,
so MRT, and Whiteline are both cool. now is anyone able to answer me in reference to "how much bar is too much bar for the frame"? remember,I've had a frame ripped by a really thick anti-roll bar.
darryl
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Old 06-06-2001, 04:59 PM   #13
bobg
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Post

Sorry, the search function is down. What is MTRs web address. And quite a few folks are using 22mm front and adjustable rears without any problems
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Old 06-07-2001, 03:03 AM   #14
Jim Gurieff
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Post

Hi Darryl.

I don't think you'll get the answer you want as the correct reply would be to say anything bigger than standard is a problem.

As others have pointed out, 22mm adjustable set to maximum equivalent works fine but that is not to say Subaru designed the swaybar mounts and frame to deal with anything larger than the factory size.

We designed replacement heavy duty rear mounts to counter a problem with metal fatigue on the factory version but we find that this almost always happens when either using 24mm (material diamater) bars or any larger bar when racing.

Its rare that road use will see the constant high roll rates experienced under racing conditions and its at these time when the mounts are under most stress. Think about the load required to lift an inside rear wheel!

To put it into perspective, our project car travelled 60,000kms+ (heavy use) with a 22mm rear set to maximum before we had heavy duty mounts and we had no signs of obvious metal fatigue on the mounts or frame.

Now, if your talking about rear bar size relative to front and overall handling balance, thats an entirely different matter and is often a personal choice as you have no doubt seen on this site. As a general rule, a balanced handling outcome (more neutral with less understeer) is achieved through disproptionately higher increase in rear roll resistance than front. That is, bigger rear bars. However, the absolute correct numbers will depend on many factors including spring rate, tyre pressures and alignment settings. Our fact sheets list recommended starting points based on our experience.

Cheers
Jim Gurieff
Whiteline Automotive
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Old 06-07-2001, 02:42 PM   #15
Tuning Factory Inc.
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Post

I have a Cusco 22mm rear bar only and it is set to maximum. I still have too much understeer on the street although it works great on the track!
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Old 06-07-2001, 04:27 PM   #16
Darryl
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Platinum Silver

Thumbs up

Jim, Gino, thanks for the feedback. I have to agree that rally cars seem to "take a lickin, and keep on tickin". I've posed this question to Cobb Tuning because it road races the WRX. I'll share whatever I find out.
God, please send me six good numbers for the lottery! Otherwise, it's interesting to know that your car still has too much understeer on public roads. I guess more power will cure that!
regards all!
darryl
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Old 06-07-2001, 07:50 PM   #17
Tuning Factory Inc.
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I'm working on it.
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Old 06-08-2001, 01:23 AM   #18
ginowrx
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non bank got em all

Cool

Daryll,

Jim took the words right out of me. These are rally cars not hondas or mazdas. I will be willing to copy tapes from my library on rally racing for you just send me blank tapes! YOU GO FIGURE IT OUT WHY THESE CARS ARE NOT CARS THEY ARE WRC "world rally cars"..They do not race by turning left 500 times and if they do not listen to the guy next to him he or she will crash instantly, You see rally driving / racing is different from any autoracing they do not know where they are going (unless you are a local. an advantage and no practice runs mind you) but they haul ass and is always at the limit and use SPORT COMPACT CARS rice burners often called . But the elite of the SPORT COMPACT CARS do rally the cars. As for the new age WRX, The car was biult as a rally car first then street version. So I would not worry about $hit rippin off the car coz of the swaybars. The best in auto racing are rally drivers and manufacturers period. After all you do not use the racing circuit on the way to work but you can always dream of driving like a rally driver any day and time in real life on any road on any automobile.

Thanks

gino
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