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Using other lower control arms.....quest to reduce negative camber

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Old 07-02-2003, 12:35 PM
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GreggT
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Question Using other lower control arms.....quest to reduce negative camber

I'm still on this mission to try to reduce my negative rear camber (a tad) without raising the overall ride height.
In a low suspension, the length of the TT's lower arm, of course, does not allow for less negative camber (it's too long). Below is the Cup Car lower arm, which is adjustable and I'm thinking it may be a solution. Does anyone know if it is shorter (in it's shortest 'unshimmed' length)/...or any other reason it would not work.

Others have discussed using the GT3/3R adjustable arm but I believe I understood that arm has solid bushings (both at the chassis and at the camber bar)? The Cup Car arm (below) has a rubber bushing at the camber bar (as does the TT), but has spherical solid bushing at the chassis.
Any ideas or suggests welcome.
Apologies for the cross-post but seemed there were a few others w/this issue and one way or the other I'd like to help w/a solution.
Thanks in advance.

<img src="http://www.986host.com/albums/GreggT/Lower_Arm_cupcar.jpg" alt=" - " />
Old 07-02-2003, 05:42 PM
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Cary
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Greg,

It can also be done by using adjustable upper a-arm links and running them a little longer. I'll try to measure a two piece arm tonight and get you that length as well. I know that one year at Daytona they were having to machine the arms to make them shorter to get the camber they were after.
Old 07-03-2003, 03:19 PM
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GreggT
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by cjv:
<strong>
It looks like what I'm currently running. Mine are the same as the GT2/GT3. I have pics of it on some of the old "Stage" threads.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Hi Chad.....yep I saw some pics of the front suspension, but this is the only one I could find of the rear.........this is GT3 lower arm?...does not appear to be adjustable.

I have tried to contact Rob out at s-car-go but hasn't gotten back to me yet.
<img src="http://www.986host.com/albums/GreggT/cjv_s_GT3R_rear_suspension.jpg" alt=" - " />
Old 07-03-2003, 03:28 PM
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Oak
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That image appears to be stock. That maybe an older image, I think I remember seeing the control arms somewhere on this board. Not sure if it was CJV's.
Old 07-03-2003, 04:27 PM
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Oak
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GreggT, email me I have some info on the control the adjustable control arms. I have it in PDF format.
Old 07-04-2003, 11:53 PM
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Cary
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I think the original question was on the camber. I took out one of each of the arms (stock vs gt2/3) and setting them side by side it looks like the GT2/3 with no shims is still slightly longer than the stock arm. I'll be at the shop on Monday and can accuately measure them if you'd like but remember it takes roughly 3/8" change per degree. At this point I would say it's pretty clear you aren't going to get any less camber from the GT2/3 arms over the stock arms.
Old 07-06-2003, 04:00 PM
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GreggT
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I appreciate the pics, but yes Cary has it right, the original project here is reducing negative camber w/out raising the car (also, with these other lower arms, I'd like to understand their bushing construction).

I know now (from Chad's pics & info from Oak & other) that the GT3/3R, Cup Car, and Fabcar lower arms all have rubber bushing at the diagonal mount (camber bar) as do the OE lowers........so they all seem to have that in common (out-of-the-box anyway, as some mod these w/metal spherical bearings).
What I'm still trying to figure is whether any of these bars are any shorter (in their shortest-un-shimed form) than OEs.....and also how their bushing at the chassis may be dif from OE.

Most of the type of people that buy these three adjustable lower arms are interested in dialing in alot of negative camber.........Obviously, my reason would be the opposite. Even if the they are no shorter (in their shortest form), I may still take a look at them to see if a quarter inch could be machined off each half at the break point.



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