steering and suspension ireland rear toe/camber kits confusion

[bianchini]

Hi All,

 

I need to purchase some rear toe and camber adjustment kits and I am confused between the two offerings that ireland enginnering has. One type is "posi-lock" and the other is not.... what is the better option? They both seem to get the same thing done except one uses 1 wrench adjustments VS 2 wrench.  Also, the posi-lock needs to have the zinc plating removed before welding.

 

Car specs- 74 2002, bilstein sports front/rear, H&R springs, no poly bushings (yet), daily & spirited driving only.

 

Experts, can you please educate me!

 

Thanks,

[2002Scoob]

When I look at the two kits, they both basically do the same thing, but with a different mechanical solution. The Standard setup uses a bolt with an eccentric shaped head to dial in the adjustment, were the Posi-lock has a toothed interface providing a 'positive lock' between the surfaces, where as an eccentric could feasibly slip. 

[FB73tii]

Would be interesting to hear from IE on this. My suspicion is that the offset washer type, which allows continuous adjustment and thus fine tuning, is gearing toward the track crowd because they are more likely to want fine adjustment and be under the car fairly regularly checking nuts and bolts. The sawtooth interface may be more for the street tuner, allowing a "set and forget" adjustment with no worry about loosening.

 

My experience is with the offset washer type--they have never loosened up since installing. My application is track-only.

 

FWIW--Fred

[Mike_R]

I have the eccentric version. It does not adjust or lock as well as the posi.  I have to have mine adjusted as the right forward subframe pivot point slipped after a hard turn on one side and is off about 2-3 degrees.  If the new style was available I would chose it.

Edited February 22, 2016 by Mike_R

[TobyB]

I've used variations on the eccentric cam arrangement, including the IE setup.  It works fine.  They DO seem to want to be re-

torqued after a morning's track session, but once retorqued, don't seem to ever come loose again. 

 

The serrated version will, as Fred says, be a lot less likely to slip.  At the cost of making adjustments harder and less precise.

My personal take would be that the serrated for camber would be fine, but for toe, you could concievably weld the serrated version

such that you can't get the exact toe you want.  And in back, that CAN be a bit of a stinker, as the 1/8" right around zero toe

tends to be the sweet spot.

 

fwiw

 

t

[bianchini]

interesting comments TobyB. You are throwing out the idea of a combo of both- serrated for camber & eccentric for toe. Is that a correct understanding of your response?

[Guest_anonymous]

One might call the vendor first hand and elicit an answer

[M3M3]

as a user of both types, i wont get the eccentric type again.  have had them slip out of alignment...not fun on the track.

 

i put the indexed kind on my M2.  outstanding.  EASY to adjust, accurate, won't slip, uses one wrench and the indexing is so fine that there is zero issue getting the alignment exact.  (and i am very particular about precise alignments)

 

complete documentation of my install process starts here

http://www.bmw2002faq.com/topic/103584-mlytles-m2-madness/page-47#entry1016768

Edited February 23, 2016 by mlytle

[bianchini]

Marshall,

 

Thank you for the input. I think I know what to get now. I called ireland yesterday and they confirmed my analysis of the differences between the two options.

 

Thanks everyone and thanks ireland engineering for supporting us.

[TobyB]

 

 

 the indexing is so fine that there is zero issue getting the alignment exact.

...and if Marshall's ok with it, I'd try it too.

 

t

[kbmb02]

Data point: I've yet to see an eccentric type adjuster move on any of the 5 race cars prepped out of the shop. -KB