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Old 03-21-2000, 05:42 AM   #1
Scooby Newbie
Member#: 707
Join Date: Jan 2000
Location: cottage grove, mn, usa
99 Legacy GT
Quick silver

Question rear sway bar

i keep reading about the 18mm rear bar on all the imprezas, but have not heard anything on the legacy. is the 18 big enough to neutralize the car. does it give understeer or oversteer with an 18. does anyone have any experience with it or the 20mm. just trying to find out what is best for me...

james kyes
99' legacy GT
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Old 03-21-2000, 07:44 AM   #2
Subie Gal
Super Moderator
Member#: 301
Join Date: Sep 1999
Chapter/Region: NWIC
Location: WA
1970 FF-1 & '70 Van
02 WRX/01 RS


I have an 18mm sway bar from SPD - the 18mm bar works great - and is recommended as the bar to "begin" with.

18mm bar = understeer (front tires lose traction a bit and car tends to "plow"

20mm bar = oversteer (rears lose traction and rear end starts to come around on ya)

Basically it depends on what type of driver you are. If you are a spirited driver and are used to the car getting loose on you, maybe the 20mm is best? But, the 18mm does indeed stabilize and make the car very easy to predict.

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Old 03-21-2000, 09:10 AM   #3
Scooby Newbie
Member#: 299
Join Date: Sep 1999
Location: Everett, Wa. Snohomish CO.

I have the 18mm on my car, I notice that if I come into a corner hot with neither Power or brakes I will understeer. but as soon as I hit the power the rear snaps around. I have a tendancy to Brake before the corner, go into it as nuteral as possible then either let it understeer or bring the Tail around as neeeded. It's a little demanding on the brakes and the Neck, but it helps my "Point and squirt" Driving style, I figure that it's a good style for roads that you don't know all that well. so I think that the 18mm is a very nuteral bar.....I depends on your style too. do you have much experiance with Oversteer?? I think I know someone with a 24MM....Matt you out there??
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Old 03-21-2000, 09:59 AM   #4
Scooby Specialist
Member#: 105
Join Date: Jul 1999
Location: Fremont, CA 94538
2000 Legacy GT Ltd


I had the Cusco 21mm bar before on my 98 Legacy GT. I will recommend to get the solid link and bushing before installing the thick bar.

The weak link and bushing will delay the sway bar affect and causing sudden over steer in the middle of a turn.
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