Control arm rebuild
My Boxster has what I think are the original control arms, so I'd like to do a refresh of the control arms. Since I track the car quite a bit, I was considering just rebuilding the stock control arms with the Powerflex urethane bushings. The issue I have is I can't seem to find ball joint replacements for the coffin arms (rear toe arms?). I'm planning on getting coilovers soon, probably the KSport Kontrol Pro, and they include camber plates, so I won't need GT3 control arms.
Can one press out and replace the ball joints on the coffin arms? Who sells the ball joints? The steering tie rods seem fine, no play or wear. Should I redo them anyways? Maybe this has been discussed before... |
Nobody sells the ball joints to replace the ones on the oem control arms... :( not even rebuilders like elephant.
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I'd do some research on the ksports. I have heard very mixed reviews there.
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The *only real way to get camber in the cars is adjustable lower control arms. |
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I did however slot my towers and right now, with stock control arms and suspension, I'm getting ~-1.8 to -2.0 camber in the front. I would think the sweet spot for front camber is ~-2.5 deg with my RComp tires and stock suspension (with Eibach sway bars). Right now, I'm getting a little wear on the outside of the front tires, but I don't feel any understeer running 34-35 psi hot. Rears are wearing even and I have -1.9 deg camber on the rear (maxed out stock setting). If I wanted to do this right, I would want to do PSS9s or KW3s, adj. control arms, adj. drop links, FIA seats + 6 pt harnesses + HANS, fire suppression, electric power steering etc... My issue is how to do all that and still have a budget leftover for my truck, bimmer, house remodeling, track events and the girlfriend!:D |
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You got the swaybars already, you could keep using the stock links unless you want to corner balance along with adjustable coilovers, as is my car without corner balancing is only 7 pounds off.
If you keep an eye out and grab a set of gently used pss9 that come up for sale from.time to time, or even just a set of the eibach pro springs (still made for uk market) that also come up from time to time you would be able to get a little lowering and get that extra camber, I am at -2.5 front and it is working well for me :) |
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Plus, if you're going to track your car, there are a lot of advantages down the road to building a relationship with a shop that knows how to work on track cars (advice and/or work on alignment, weight reduction, seat/harnesses, safety equipment, etc). It may take a bit of time for you to acquire a full set of PSS9's but patience can pay off. |
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