Thanks, yes I have them already but I need the lowers too so my question still stands.

Road Racing, -1.7F -1.0R 0toe all around

so has anyone used whiteline camber kit bushings to get more negative camber out of stock suspension?

https://cimg7.ibsrv.net/gimg/www.rx8...cd37f9f5f3.jpg


what is the trick to get most negative front camber out of the stock suspension?

I have not personally tried it. I did ask Chris at Cobb Tuning, who does a lot of performance suspension work, about offset bushings in general, and he told me they have trouble with them moving and not holding an alignment. His recommendation is adjustable control arms.

Counterpoint...

I asked Terry at Vorschlag Motorsports (also does a lot of suspension work) the same question, and he said they have used them successfully in many cars.

That was quite literally of no help, wasn't it?

I will be at the track Saturday and will try to remember to ask the owner of Motorsport Enterprises (specializes in Miatas and RX-7s and 8s) what he thinks of them.

It would be great if they work. The most negative camber I have been able to get out of my front suspension is -2.4. That is with a ride height of 3.75" measured at the pinch welds. I want -3.5. Badly.

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These are my current settings, BTW. The front is uneven, but I told him to "max out both sides, and I will drive to it." Turning left and turning right are a little different. ;)

https://cimg6.ibsrv.net/gimg/www.rx8...4bc64cdcea.jpg

Suck it up and get the Speedsource lower control arm camber bushings ;)

You won't have any trouble getting -3.5 with a lot more caster than that too :)

Thats great. If I could buy them.
Everywhere I have asked says NLA

I guess I'll have to make my own - a pain but at least I can make them with slightly more offset.


James

I recently put a set in. If they "turn" you are doing it wrong. Works just fine, but like you, I need more total neg.


James

Did you try Mazdaspeed Motorsports? They used to have them

Drop used to make them as well...but I think that they stopped making them a few years ago

Drop = NLA

Mazdaspeed only allow membership if within US or race annually in US.
I'm in AUS

Might not hurt to ask around if someone can get you a set ;)

Or call Speedsource directly and see if they sill make them

Yes I've been doing that for a year.


I might just do that but my hopes are low.

Mazdaspeed Motorsports lists the following part:

0000-04-5420

1
BUSH.KIT,OFFSET(DELRIN)
Notes: BUSH.KIT,OFFSET(DELRIN)
MX-5 Miata
RX-8
ALL
2004 - 2015
$86.80


No idea who makes it, or if it is for one axle or two.

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they are just the offset UCA bushes like shown in post #478

the part # we are after is 0000-04-8001

MSM site says NLA.

indeed it does

Thanks for posting. Makes me feel a bit better about my new car's alignment. Was at -2.7 on the front right, but could not get more than -2.3 on the left. Ended up evening it out so -2.3 all around (front and rear).

This is with -6 caster and a ride height around 13.5in from hub center to wheel arch. I'll need to check what that equates to from the pinch welds, but it is not super low.

Backing out the caster did not make much difference to the static camber btw, so I think I will add more in next time.

My prev car was at -2.9 at the front, but slightly lower, so probably equivalent to -2.7 at this car's ride height.

0.15 degrees toe seems high in the rear? I never really know what to have here, am at 0.05 per side right now, and 0.00 at the front.

Yes, I think that amount of rear toe is a little high. I let them talk me into it, when I was troubleshooting my Ohlins oversteer issues. Next time I take it in, I plan to have it backed down to around where yours is.

https://cimg8.ibsrv.net/gimg/www.rx8...5f7562ed86.jpg
https://cimg1.ibsrv.net/gimg/www.rx8...eb84aa1413.jpg


Here's basically what the lower control arm camber offset bushings look like.....these are the Drop Engineering ones...but they look the same as the Mazda speed ones

Has anyone tried contacting Speed source directly?

Yep.
No response.

That sucks....

If I thought that there was a market for them they likely wouldn't take much to make.

and they add how much? you in south fla? willis?

beers :beer:

You can get a about 2 deg more - camber than stock.

​​​No..about as far away as you can get in lower 48 😎 and then about 10 miles north 😎

Willis? Like Bruce? 😉

I will be in Mid Florida in a couple weeks of you want to buy me a beer 😎

Would I be able to get away with just getting the lower control arm kit, or do I need to get both?

I am guessing lower would yield most additional negative camber with leaving the UCA stock?

More importantly do these stay put - don't rotate during the track use?

Has anyone actually used them?

interesting install video:

fwiw, I went to a local shop out in LA that handles a lot of tracked / raced miatas, and they tried to use offset bushings to get some additional camber adjustment, and they had tons of issues with them (in general, not these specifically). They would rotate while being tracked... and when they drilled and bolted them in, they cracked. They basically said they weren't a viable solution, as sometimes the camber would get out of adjustment after a single session...