[batchman]

Originally Posted by RussMcB

I recently bought a pair of adjustable links for the rear of my car here

Wow Russ, great find. I was thinking of installing only one/side since they do appear heavier than the stock parts, and they ain't cheap - but are cheaper than the Guldstrand parts I was choking on buying .

Originally Posted by Hib Halverson

The post I made got kind of long so I decided not to cover that. My gut feeling is there might be a problem with loading on those parts but I really had not information to support it. In defense of C4 coil-over conversions, I'm not aware of anyr reports of fatigue failures of C4 shock mounts on cars converted to coils.

I'm not aware of any failures either and I'm probably just over-cautious given I'm running huge and sticky slicks and sometimes on bumpy courses. Again that rear knuckle looks stout but I figure I'm probably north of 1.5g's and also need to space the shock inboard, making the "lever" more effective.

Oh and thanks to lbszr catching and fielding the Q on the VB&P spring setup, although as I recall I had to specifically ask for this style adjuster and they did have a significant lead time (for the inserts I think) when I called. I thought everyone knew about them on this, in fact I thought they were the only source with non-factory spring rates.

Originally Posted by XfireZ51

My car came w coil overs and overall I am pleased w them. I won't convert back but I am interested in the comment of increasing the stab bar rate. Is there a guide to what this should be given the spring rates chosen, i.e. 425F/300R?

I'm sure your C/Os are fine but I would suggest adding an annual inspection on that rear mount, or after any big "pothole in a puddle" type incident. You undoubtedly have a well matched system in your spring/shock combo, there's a lot to be said having the spring and shock sharing mounts.

For your bar question you'll have some math to do if you want to home in on the factory spring/bar ratios - your wheel rate vs spring rate will be a little different than with the factory spring seat location. For things like bars though I put a lot more stock in tuning by SOTP. Of course it's very difficult (and in fact unwise) to get steadily close enough to limits to find the front/rear balance on the street. Here's a good excuse to get comfortable on an autocross course! Luckily there are a number of bar sizes from the factory and the aftermarket, they're not expensive and they're relatively easy to change - easy enough to try a few combos at a typical test-n-tune event.

Speaking of which, anybody have a 19mm rear bar lying around? I think my next spring will be high enough rate I should soften what I have, and I'm running the smallest one I have in-hand.

Best,
- Jeff