You can use them in Street Mod. One of the first lines in that section is "competitors may pick and choose between Allowances fro Stock, Street Touring, and Street Prepared classes." Since it's ST legal, it's SM legal. Quite possible it's SP legal too.

 

But you still can't at this time use the full ALK kit in any of them though right?

Mike

 

Correct. The SM Advisory Committee has pretty much said they won't allow subarus to use the full ALK because it opens up so many things for other makes. But, being able to use the offset bushing pretty much makes it a moot point. the only thing I'm curious about is, how do you ensure that your castor is equal and correct on both sides of the car? How hard is it to rotate the bushing without pressing it back out?

 

From what I recall it would be damn near impossible to rotate without pressing it out, I may be mistaken but the couple of them I was involved with were a pain in the a$$ to do.

Mike

 

It's a PITA. mine are slightly off but nothing that is a big deal.

These are old alignment settings after I had them installed

 

ok who has the best prices for these lil buggers.....

Rocky

 

www.mpjperformance.com

 

WERD!!!....gonna order em tonight...

 

Ok, so to summarize.... full ALK is still not legal in STX, but the offset bushings are. Is this correct?

The offset bushings add 0.5 degrees of castor and firm up the bushing, but don't do any removal of the anti-lift geometry like the ALK does.... correct?

 

The offset bushing is legal. I don't see how it would have any disadvantage to the full ALK, as the caster and the firmer poly bushing are the only changes from either kit. Cost will be about the same I believe, considering that the offset bushing has to be pressed into your stock mounts.

 

I believe further caster is added with the full kit due to the goemetry changes made by the angle of the bushing housing (actual full ALK). I do not know this for sure but I remember something to this effect on one of the white papers we used to get as a dealer.

Mike

 

There is a HUGE difference between the two. The offset bushing only adds caster and stiffens the bushing to control dynamic caster changes. The ALK has these qualities in addition to changing the anti-lift geometry. Its this change in the anti-lift geometry that provides the majority of the traction increase underpower by "softening" the front suspension, allowing it to grip.

 

Mike, the bushing in the ALK is an offset type of bushing.

 

Was that to me? If so yes I know. One question if your using it, how do you adjust the offset?

Mike

 

You can't adjust the offset in the ALK. Whiteline provides the maximum amount of caster while still allowing full articulation of the control arm. I guess you could theoretically press the bushing out and rotate it a bit but its not as simple as that. The bushing in the ALK is molded a certain way so that the revised "angle of attack" that the control arm has due to the ALK is met with no binding or resistance. Kind of hard to explain, but the use of the ALK mounts the control arm tip lower and and farther inboard. This angles the tip a few degrees inwards and it is not longer perpendicular/parallel to the chassis. The bushing in the ALK compensates for this new angle.