Sway bar Testing

[ma71supraturbo]

Alright, here's what I have for now:

Front
(brand) (percent stiffer than 87-88T stock bar)
Addco: ???
Cusco: 20% est
ST: 10% est
Stock 91-92: ???
Tanabe: 22% est, 16% actual
Whiteline non-adjustable: 45% est, 50% advertised
Whiteline Soft: 45% est, 51% actual
Whiteline Med: 70% est, 77% actual
Whiteline Firm: 100% est, 111% actual

Rear:
Addco: ???
Cusco: 99% est
ST Soft: 92% est
ST Firm: 117% est
Stock 91-92: ???
Tanabe: 126% est, 119% actual
Whiteline non-adjustable: 36% est, 30% advertised
Whiteline Soft: 36% est, 47% actual
Whiteline Med: 53% est, 63% actual
Whiteline Firm: 74% est, 82% actual


My calculations are based on Fred Puhn's formula, and are based on the assumption that all of the manufacturers use the same geometry. This isn't a great assumption to make, and I estimate that my calculated numbers have an error of +- 10% as a result. Actual numbers are from Wiisass' data in this thread. Advertised #s are from a Whiteline representative in 2004 (before they started making the adjustable models).

 

[ma71supraturbo]

Addco can still make the sway bars just call them

Do you remember who you talked to? I called and talked to some lady obviously just browsing through the current catalog (she said they only made it for the 93-98 -- I didn't feel like mentioning they still made them for the 82-86 as well).

 

[prsrcokr]

Thanks for updating this Jeff, I'm trying to square up tires and this will be helpful. Was running ST F/R bars with 235/255 and had lots of oversteer. Swapped to a stiffer front bar and it's nuetral-ish again. I think the Whiteline adj. rear might be just what is needed to run square sizes without being tail happy.

FWIW: The above was with nylon bushings, Tokico/Eibach and then Buddy club coilovers and -1.2 deg. F/1.5 deg. R camber.
Brian

 

[sthmstr]

Any progress on the 89+ sway bars off a 1990? I may be able to snag a set for free soon and curious if there's an improvement? Great thread BTW!!!