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Originally Posted by wstar
Ok so after all the other diversions, I still have a couple fundamentally-simple questions (one of which I already asked!):
1) Will I need to use shorter springs if I switch to a significantly stiffer spring and want to keep ride height and stroke about where it is today? Or should I basically plan on ordering the exact springs I have today, just in a different rate value? What would a normal person that knew what they were doing tend to do?  |
If you go with a stiffer spring of the same free length, you'll need to lower your lower spring perch (assuming you have that adjustability) to maintain the same ride height. If you would end up having to move the perch by more than 1", then it may make sense to get a 1" shorter spring, and move the perch less. As spring length gets shorter, you'll just need to remember to check to make sure you don't encounter a coil bind condition.
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2) The rear sway: it's a given I at least need to cut back to the stock bar. What about just dumping the bar altogether? I know others have dumped the rear bar and been happy in 350Z's, but I suspect this was in combination with an upgrade to stiffer springs all around. What's the worst that could possibly go wrong* if I dump the rear bar and fail to do (insert some other unknown thing that needs to be done at the same time)? Would the car get unstable in some way that I'd really hate?[/I]
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Removing the rear bar will soften the rear relative to the front, which will shift the balance towards understeer - just like stiffer front springs would.
The only thing I'd suggest to watch out for -which probably won't be an issue if you have decent rate rear springs - is to make sure the new softness in the rear suspension, doesn't mean that it is compressing so much further, that it's now hitting the bump stops or something.