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Old 08-12-2003, 05:12 PM   #1
kiefer
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Question Do I need to get the upgraded sway bar mounts?

I'm looking to get rid of the WRX's understeer that we all love so much . I plan on getting Whiteline sway bars front and back (20 - 24mm) along with the Whiteline Heavy Duty Endlinks (KLC26's). I plan on doing 3 or 4 autocrosses a year, and the rest of the time I'll just be doing some spirited street driving. Do you recommend getting the Whiteline sway bar mounts for the rear as well, or do guys think I'll be ok with the stock mounts? Thanks in advance for the help!

-Chris
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Old 08-13-2003, 12:18 AM   #2
turboICE
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The one on the left is the stock one if you plan on pushing your larger bar -



Hotchkis at the right (from J-Spec Tuning).
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Old 08-13-2003, 12:44 AM   #3
Adiliyo
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second one looks much stronger...is the oem one broken in that picture..or is it just my monitor
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Old 08-13-2003, 12:51 AM   #4
turboICE
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The stock one broke under the additional stress of a larger bar according to the submitter. Everything in this car was barely built to withstand stock stresses. They love modders buying them but they certainly didn't build them to be modded without replacing multiple ancillary parts. Our WRX's are not STi's with less powerful motors, they tuned the whole thing down.

Installed on mine with Hotchkis end-links and the 20mm 2002 sedan bar rather than the 17mm wagon bar (and 2003 sedan bar) it came with.

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Old 08-13-2003, 01:55 AM   #5
ripvw
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Another benefit of the Whiteline mounts is that they come with stiffer poly bushings instead of the stock rubber. This will improve the effective stiffness of the swaybar according to Fred Puhn in his book "How to Make Your Car Handle".

"Replacing rubber anti-roll bar bushings with solid bushings at the frame and suspension can have more of an effect than a bigger bar. In an actual test of anti-roll bar stiffness, a .80-inch diameter bar using solid bushings gave the same effect as a 1.00-inch rubber-mounted bar." pg. 150

The Whiteline swaybar also comes with poly bushings so you will end up with the effect Fred is talking about. With this added stiffness, make sure you start out with the bar on it's least stiff 20mm setting and work your way up towards a neutral or mildly-understeering car for the street.

In fact, you may want to leave it on 20mm for the street and increase it to 22mm or 24mm for autocross events. Oversteer can be a good thing for the relatively slow but tight turns of an autocross course, at least according to Fred. Certainly a lot of autocrossers on this forum like to run the bars very stiff while racing.
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Old 08-13-2003, 02:36 AM   #6
tdxflex
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Quote:
Originally posted by ripvw
Another benefit of the Whiteline mounts is that they come with stiffer poly bushings instead of the stock rubber. This will improve the effective stiffness of the swaybar according to Fred Puhn in his book "How to Make Your Car Handle"...
Good book, I've got the same one.

The sway bars come with the poly bushings, the hardened mount is just a mount. Most of the aftermarket sway bars are bigger in diameter for more strength so not just different material but also different size bushings are needed. The endlinks also have poly bushings and are made of metal, stock is plastic.

I've used MRT alloy endlinks, both the Cusco and Hotchkis sway bars, and stock mounts. Haven't had any problems here in the 16k miles I've put on. The upgraded mounts definately look stronger and I like that it uses 2 bolts rather than 1 bolt and a slip-in bracket. But I'm going to wait until my stock ones fail before I get heavier duty mounts.
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Old 08-13-2003, 09:21 AM   #7
mav1c
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If you really want to reduce understeer, I'd leave the front sway bar stock, and just add endlinks.
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Old 08-13-2003, 10:54 AM   #8
kiefer
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Default what to do??

thanks for all the responses guys! i'm still not sure what i'm going to do though. has anyone tried both setups (aftermarket sway bar with endlinks on stock mounts and then on aftermarket mounts)? and if so, did you notice a difference when you upgraded the mounts? i know it should help handling in theory, but is it something you can really notice in real world applications? i don't plan on do that much work to my car (probably just springs with inserts, mattspec turboback, and accessecu stage 2), and i'm going to have to do it slowly because i'm not exactly rolling in the dough, so if i don't need the sway bar mounts, i'd rather hold off on them. any suggestions?


i just wanted to use the bananna
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