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Originally Posted by irmb
Yes - goal is to get my license.
Tires are not currently wearing even - wearing on the outsides. hot pressures are in the 35 psi range. I've been airing down to 29 and that's working well.
I've taken my car to several local tuners (I live near sears point raceway - so I have lots of good local resources) and they recomended camber plates as a first option - as they're easier to work with.
the guy at sears point (american v8 supercars - check them out) showed me slotted lower mounts that he had made for another car. He could make some for mine - but that would make it hard to me to DIY in the future.
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Cool, best of luck in your endeavors!
Do you also have a tire pyrometer? That would definitely help figure out the whole story on the tire wear. It's the combination of pressure and camber (assuming the corner and driver are repeatable) that creates the tire wear. Too low a pressure will usually create more shoulder wear, so your tire construction must be playing tricks to get actually better wear at that relatively low hot pressure. Have you tried bookending your data by running laps at higher hot pressures? Try going all the way up to, say, 42 psi hot, and check with the pyrometer and stopwatch. This will help you dial in what direction to go and why.
Ok, so hopefully a good vendor releases camber plates. In the meantime, it's sounding like the car has some adjustment from the factory. If your alignment guy doesn't want to adjust your front camber with the knuckle flange, then IMO you need to find one that has more experience, because it's a fairly common adjustment.
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Originally Posted by JaxChris
For the drops we have available right now (~1") it is definitely within the range of the vehicles stock adjustment features. The rear 5-link is quite good and the front camber has great range. But again, the front caster is the sticking point and I think camber plates will be only for the air bag crowd that wants to slam the car.
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Looking at the strut mount design, it appears quite typical. Is there some bodywork in the way that would impede an adjustable strut mount plate? I'm not seeing why the caster would be a sticking point.
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Originally Posted by crankaholic
Heh... don't know why I thought lowering would create positive camber  I'll blame it on the henny. Do strut type front ends really gain that much camber with an 1" drop? |
Mac struts have a basically linear camber curve, as long as the control arms are reasonably parallel to the ground. A 1 inch lowering is not going to change the camber more than a tenth of a degree or so.