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Modify lower control arms?

Old Dec 20, 2010 | 11:36 PM
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Default Modify lower control arms?

I took a closer look at my suspension today and realized that after it settled from lowering, it is close to riding on the bump stops. The shocks are also very close to bottoming out. Has anyone ever modified their lower control arms to lower the shock mount? This would give me more shock travel, then I could shave my bumpstops and get more suspension travel.
I would like to keep my current bilsteins, and not buy custom shorter body shocks. Also, I have the mono spring front suspension, so I dont have to worry about the spring pocket.
Any other tips for increasing shock travel? I was thinking of shaving the upper shock bushings (gain about .25" of travel)
Raising the car is not an option
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Old Dec 21, 2010 | 12:34 AM
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What if you used two longer AA bolts with washers or nuts as a spacer to lower the bottom of the shock?
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Old Dec 21, 2010 | 02:05 AM
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Originally Posted by gkull
What if you used two longer AA bolts with washers or nuts as a spacer to lower the bottom of the shock?
I was thinking of something more "permanent". Im looking to add an inch of shock travel, so I think that might be pushing it by using nuts and washers as spacers.
Your car is pretty low too... do you know the collapsed length of your QA1's? (you have the semi coilovers, right?). I believe my bilsteins are 11"
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Old Dec 21, 2010 | 07:35 AM
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No idea on the collaps length. They mount on top of the AA and can lower up to 3 inches. I like the adjustability, here was my first kit before I bought shorter springs 600#.



http://qa1.thomasnet.com/item/rsport...=prod&filter=0
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Old Dec 21, 2010 | 07:37 AM
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I installed studs along with machined spacers out of tool steel to lower the shock on the a-arm and regain some travel. Here's a pretty poor picture, I'll see if I can find a better one.

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Old Dec 21, 2010 | 08:09 AM
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Jason, I would say from that picture that you have way to much neg camber

my setup has very even ware and tire temp with neg. .62 degrees

I also found that knock off road racing slicks are cheaper to run than street tires.
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Old Dec 21, 2010 | 08:22 AM
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Many years ago before I got a little smarter I damaged a front KYB gas adjust when it bottomed out hard with my VB&P 550# springs.

I just went out and bought shorter front shocks.

When I got smarter I went to the Qa-1 dual adjust
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Old Dec 21, 2010 | 08:15 PM
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Looks like someone needs some new rubber!!!
If you were a good boy maybe Santa will bring some for you!
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Old Dec 21, 2010 | 08:49 PM
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I wish someone made a direct swap drop spindle for the C3's.
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Old Dec 22, 2010 | 12:58 AM
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Just a little update... I pulled my suspension apart, and measured the shocks (Bilsteins). They are 9" collapsed- meaning 9" from the mounting ears to the top of the body where the bushing would bottom out on.
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Old Dec 22, 2010 | 06:30 AM
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Originally Posted by gkull
Jason, I would say from that picture that you have way to much neg camber

my setup has very even ware and tire temp with neg. .62 degrees

I also found that knock off road racing slicks are cheaper to run than street tires.
Yeah I'm debating on a set of race only tires to buy sometime this year. The heavy wear was due to too much camber and a little toe-out . I've adjusted the suspension since then, .... live and learn.

Have you ever tried Hoosier's vintage racing tires. Was debating on trying them since I already have a set of 15 inch wheels. I have my doubts about them since they are bias ply tires compared to my normal radials I been using.
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Old Dec 22, 2010 | 09:33 AM
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Jason
about tread wear and camber... what size rims and how much camber with the set up in the picture?
i use Avon 245/60/15 and i have 1.5 deg camber on left side and 2 deg on right side. need to bring them equal soon and just thinking on what to do... 1.5 or 2. don't have a pyrometer yet ...but i think my car will like as much neg camber as possible to keep as much rubber on the ground during cornering
with my usual short rides , no uneven tires wear till now
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Old Dec 22, 2010 | 09:35 AM
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Originally Posted by Jason Staley
Have you ever tried Hoosier's vintage racing tires. Was debating on trying them since I already have a set of 15 inch wheels. I have my doubts about them since they are bias ply tires compared to my normal radials I been using.
Yes, all our vintage cars use bias ply slicks or even grooved to look like a period treaded tire. I have used both Goodyear and Hoosiers on my Vette. They are a good time.

Street tires just go away so fast. toyo does make some treaded race tires in 15 inch.
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