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Old 04-22-2011, 11:15 AM   #1
Scooby Specialist
Member#: 84181
Join Date: Mar 2005
Chapter/Region: NESIC
Location: CT
NASA #530 GTS2

Default Roll Center/Bump vs. Sways

So my conundrum for the day is trying to class in PTC for NASA's Hyperfest... my issue is I need to get 3 points back to slot into the class without problem.

Sway Bar Modification = 2 points
Bump Steer Kit = 2 Points
Roll Center Kit = 2 Points
Weight = +15 lbs = 1 point gain

So my thought is...
1) go back to stock sways - offset with spring rate
2) Delete bump/Roll and take off 15 lbs from competition weight.
3) Delete bump OR roll and add 15 lbs to weight.


Info on the car; 2000 RS - 2600 lbs competition weight, ~190-200 wheel power, running 245 Hoosire R6's... uh leme know if you need more hah.
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Last edited by Rokkit; 04-22-2011 at 10:08 PM.
Rokkit is offline   Reply With Quote
Old 04-22-2011, 07:46 PM   #2
Scooby Specialist
Member#: 30367
Join Date: Nov 2002
Chapter/Region: South East
Location: nashville, tn
2005 Legacy GT


I like your thought. Keep the bump/roll
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Old 04-23-2011, 03:42 AM   #3
Scooby Newbie
Member#: 97066
Join Date: Sep 2005
Location: Fort Riley, kansas
2002 WRX


option 3, you won't notice the weight change and you can use it in a needed to spot to help correct corner balance and the roll can be corrected by adding more camber. Just sharing.
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Old 04-23-2011, 11:21 AM   #4
Scooby Specialist
Member#: 95901
Join Date: Sep 2005
Chapter/Region: SWIC
Location: Las Vegas, USA

Originally Posted by Rokkit View Post
Roll Center Kit = 2 Points
Weight = +15 lbs = 1 point gain
These two.

You'll need to raise the ride height to make up for the Roll Center Kit removal and add the 15 lb when you corner balance it. Low and inside the tire 'rectangle'. You need the sways to balance the rear to match the front.
68Cadillac is offline   Reply With Quote

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