Buying some JIC coilovers. What spring rates are best for daily and autox.

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Old Nov 12, 2003 | 10:35 AM
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Default Buying some JIC coilovers. What spring rates are best for daily and autox.

Ordered a set of FLTA2 RS for my 88 crx. Since it is an 88, its lighter so would 10k/8k be too much?

Why do some use 8k front (example) and 10k rear? drift or rotation?

Should this matter be asked in "tech"?
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Old Nov 13, 2003 | 07:45 PM
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Default Re: Buying some JIC coilovers. What spring rates are best for daily and autox. (b18crx)

ttt
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Old Nov 13, 2003 | 09:35 PM
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Default Re: Buying some JIC coilovers. What spring rates are best for daily and autox. (b18crx)

You would probably like the handling better, especially for autocross, if you put the 8k's in the front and the 10k's in the rear.
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Old Nov 14, 2003 | 05:50 PM
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Default Re: Buying some JIC coilovers. What spring rates are best for daily and autox. (b18crx)

For a daily driver, I'd say those are a bit stiff spring rates and would be a bit uncomfortable (but not a big deal). If you're going to race, I'd say that's a pretty good setup assuming you're using kg instead of lbs for spring rates (1kg=2.2lbs iirc). You should prob move to higher spring rates when you have more exp with racing though.

I'm no expert, but I think higher rear spring rates allow for reduced understeer/increased oversteer, so it usually makes sense to have a slightly higher rear spring rate, but not have a huge discrepancy if you're not a very experienced driver (car would be very tail happy).

Yeah, you might want to ask/search more in tech. the race/auto-X forum might also be more helpful.
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Old Nov 14, 2003 | 06:12 PM
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Default Re: Buying some JIC coilovers. What spring rates are best for daily and autox. (b18crx)

Yes, some autocrossers and road racers do the higher rear spring rate thing for rotation. This really isn't a beginner's setup, so you should be comfortable with the car in the first place. It's not that safe of a street setup in less than ideal conditions (i.e. don't drive like an *** in the rain with this). You may want to try it with the front stiff setup first to get used to the higher overall spring rates and then progress to a rear stiff setup to see if you can take advantage of it.

If you search the RR/AX forum, there are a ton of threads on front vs rear stiff. Friendly word of advice, search first , if you start a new thread someone will have a cow because it has been intensely debated to no end. The short of it is there is no one answer, you need to decide what is best for your driving style.

On the street it's going to be a stiff ride, but that's all relative to what you're used to and can accept, how bad your roads are, etc. But you will probably notice it being harsher with rear stiff.

And to add to what ronmcdon said, to convert kg/mm spring rates to lbs/inch, multiply by 56 to get an approximate value. So you've got 560 and 448 lbs/inch spring rates.
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