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Honda Civic Suspension Honda Civic Suspension can do many beneficial things. Some lower the suspension for style while others do it for racing. This is where you can give and take information about the Honda Civic Suspension setup.

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Old 04-08-2007   #1 (permalink)
EMK20a2
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Best Spring Rates

I am going to stiffen up the rear end a bit for autox season. Right now I have 336 lbs/in in the front and 448 lbs/in in the rear. I was going to keep the front a bit soft by keeping the 336 on, but go with either 504 lbs/in or 560 lbs/in. I really can't decide between the two . I figure if the 560s cause to much oversteer and make the car unpredictable I could always swap the 448s that were on the rear up to the front so I would be running 448 in the front and 560 in the rear (assuming that the fronts and the rear are the same, which I am pretty sure they are). Has anyone messed with spring rates on our cars?? Keep in mind that I have a K20, so the front may be a bit heavier than stock. Overall options are:
336 front/448 rear Current setup
336 front/504 rear
336 front/560 rear
448 front/560 rear (if the above setup is to unstable and assuming that the front and rear springs are the same)
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Old 04-08-2007   #2 (permalink)
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Re: Best Spring Rates

those are goofy numbers.... is that round numbers in kg/mm?
Anyways, depending on how courageous you are.... 336/560 would be fine, more balls, if you really want that thing to rotate (and you can drive).... go for something like 700.
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Old 04-09-2007   #3 (permalink)
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Re: Best Spring Rates

Yes those are round numbers in kg/mm, 336 is 6.0 and 560 is 10.0. I think I will try the 336 and 560 and see how that is, I just don't want the car to be insanely unpredictable. I actually have had the sway bar on backwards for the past couple of years which was binding the A-arms and really not allowing the suspension to compress (probabally like having 700s on the back LOL), the car handled well, but was just a bit to unpredictable at times. I turned the sway bar around and it just is not handling the same, so I figured it was time for some stiffer rear springs. Do you know if the rear and front springs are the same diameter and length??
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Old 04-09-2007   #4 (permalink)
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Re: Best Spring Rates

with coilovers you need a length, a coil diameter (its the inner diameter, measure the collar) and a spring rate. Thats it.
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Old 04-09-2007   #5 (permalink)
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Re: Best Spring Rates

btw, what kinda struts are you running? i'd up the fronts up to the 448 and the rears to about 600 with a 22mm sway in the rear.

as of my setup, currently running 550F/900R with 15mm in front, 22mm in rear and it turns real nicely.
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