I contacted a sales engineer from SuperPro, in Australia, and he measured them for us. He found that they comfortably fall within the letter and spirit of the rule. Frank Miller also sent us an OE core that I measured and modeled in 3D. I then started to model the SuperPro so we could more directly compare them but stopped when we realized it wasn't necessary.


The hope is that they offset the wheel forward enough to clear the glob in the inner wheel well.

 

If it moves the wheel forward as much as the Perrin bushing does, then it will more than clear the rear of the wheel well. In fact it was a little to far forward for me so I make my offset top hats to give maximum caster up top and bring the wheel back a little bit. This gets me about as centered as I could hope for.


Attachment 326970

 

and here's the offending part in the wheel well



If there enough people interested we could be persuaded to contact MAPerformance and see if they'd offer a discount.... I'll inquire


(edit) MAP added the piece to their website here:
http://www.maperformance.com/products/superpro-duroball-bushing-kit-rear-2002-2007-mitsubishi-evo-8-9-duro3741k

 

Too far? in that it interfered with the front of the liner? or bumper?

 

Yes to both. I ended up cutting my fender liners to remove the forward section just above the metal piece (weight reduction). My tire was constantly rubbing on it till it just looked shredded. I should probably use something to support the bottom outer corners but its been unsupported for years with the tabs broken off.

 

Thanks Dallas, what kind of clearance issues did you have with the front bumper? Also, is your oil cooler taking a beating now?

 

Modern Automotive Performance is offering the SuperPro front LCA inner\rear bushing for under $200. HERE:


http://www.maperformance.com/products/superpro-duroball-bushing-kit-rear-2002-2007-mitsubishi-evo-8-9-duro3741k

 

LOL at maximum caster.

 

Hah, when I posted this I was just thinking you know I could increase that quite a bit if I took out the adjustment...

 

Our SuperPro offset bushings are installed. We measured about 5/16" further clearance to the rear of the fender well and 0.75 degrees of additional +caster. Also, we were able to retain our aftermarket inner-front bushings (WORKS urethane). They were able to comfortably comply with the off-axis angle introduced by the offset bushing.


-Doug

 

For reference, with the Ciro plates and offset bushings, I had to trim both the fender and the bumper to allow for more clearance. Keep in mind my scrub radius is much higher than yours though. I was running either 18x11 0 offset or 18x10.5 +5.

 

Map's description on this is incorrect as far as being anything related to the drivetrain/rear differential

thanks for the info. I've got about 5.1 degrees of caster with my cirodesign caster plates up front, but it did move the rear back a bit, and now rubs on one side at full lock with the fender liner - looking for something to move the wheels forward a bit again, this might be the STU legal choice! Are you still running the fender liners?

 

Forget this stuff, when are you getting a larger FSB?!?
I've still got the Whiteline FSB sitting in my garage.

 

=P I'm rubbing at full lock with the plates, I want to fix it lol

 

Thanks, I let them know!



Yes, fender liners are "required" ...but can be modified to clear.