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Old 2012-11-29, 08:37 PM   #188
sperry
The Doink
 
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Real Name: Scott
Join Date: Nov 2002
Location: Portland, OR
Posts: 20,335
 
Car: '09 OBXT, '02 WRX, '96 Miata
Class: PDX/TT-6
 
The way out is through
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Quote:
Originally Posted by rory_a View Post
I'm hoping to tuck a bit of tire, willing to sacrifice a bit of ride quality and performance.

Ground Control has a demo/mock-up set of their coilover sleeves with KYB AGX listed on eBay for $800, and I'm figuring after everything we've been through for the STi they might be will to work on that some more. That's fully assembled, NB extended top hats, with the option of swapping out the springs for other rates. I'm not sure I'd be able to find a better deal, and better compromise of form and function than that. And, aside from dealing with local friends, they don't come any easier and pleasurable to deal with than Ground Control.

I'm still up in the air over which wheels I'll end up with, but the TR C3Ms are up there, as are a few Rotas in 15x8 and 15x9. I think this will follow the same dirty track rat styling the STi ended up with, so the TRs are likely winners. Can't beat the price either.
C3M's? ....yep, they rock. They look like Prodrive tarmac wheels from the WRC years.



Regarding the suspension, keep in mind that a low Miata handles like crap. Even going an inch lower than stock means having to make a serious effort to properly manage the bumpstop transition, since Miata suspensions intentionally use the bumpstop as a non-linear spring to ramp up firmness when cornering. The GC kit was a serious contender when I was picking my setup (was planning on using it with the Koni's I already had on the car), but I decided I didn't want to have to do things over and over like I did on my WRX while sorting things out for the track (ride heights, bumpstops, damper settings, alignment, etc). So, I just went with FatCat and had them build me something non-adjustable specific to my use goals, bolted them on, and have loved the car.

So, you can go pretty low and build a sweet looking car (see below), but it will likely be awful on the street comfort-wise, and hard to drive at autocross if the bumpstop transitions are harsh or inconsistent. Not saying you're wasting your time building a low Miata, just know what you're getting yourself into.

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