Suspension & Brakes Theory, alignment, spring rates....

spring rates dillema on a car

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Old Feb 9, 2006 | 09:09 PM
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Default spring rates dillema on a car

it's my daily driver but dont care too much about comfort but roads around here are not that good...

i'm going with ksport coilovers , wondering what spring rates are good for a stock 1990 honda crx dx model and a weekend track/road race car.......

appreciate the advise guys......
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Old Feb 9, 2006 | 09:20 PM
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Default Re: spring rates dillema on a car (VeilSide_Mas)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VeilSide_Mas &raquo;</TD></TR><TR><TD CLASS="quote">it's my daily driver but dont care too much about comfort but roads around here are not that good...

i'm going with ksport coilovers , wondering what spring rates are good for a stock 1990 honda crx dx model and a weekend track/road race car.......

appreciate the advise guys......</TD></TR></TABLE>

450/550 should be plenty stiff for double duty, if the dampers can handle them.
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Old Feb 9, 2006 | 09:31 PM
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i'm going with coilovers...... what units are those?

how would you advise on using 10k front and 6k rear? these are the units the seller is giving me so i aint sure man.......

hope to hear from everyone
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Old Feb 9, 2006 | 09:52 PM
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From: Off THE 60, Between THE 605 and THE 57
Default Re: (VeilSide_Mas)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VeilSide_Mas &raquo;</TD></TR><TR><TD CLASS="quote">i'm going with coilovers...... what units are those?

how would you advise on using 10k front and 6k rear? these are the units the seller is giving me so i aint sure man.......

hope to hear from everyone </TD></TR></TABLE>

10kg/6kg is approxmately 550lb/350 lbs. ~56kg/mm&gt;1 lb/in.

those spring rates are no good for track driving. will induce understeer.
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Old Feb 9, 2006 | 10:09 PM
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what about 11k front 7k rear?

what rates are good for a stock crx bro?
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Old Feb 9, 2006 | 11:05 PM
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Default Re: (VeilSide_Mas)

Come find me at Raytheon in March, and I'll tell you way more than you want to know about springs and the rest of the car.

Otherwise, you gotta search for that stuff. There's no perfect number for what you're asking, but this has been talked about before.
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Old Feb 9, 2006 | 11:26 PM
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IM'ed you buddy
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Old Feb 10, 2006 | 12:38 AM
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From: Off THE 60, Between THE 605 and THE 57
Default Re: (VeilSide_Mas)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VeilSide_Mas &raquo;</TD></TR><TR><TD CLASS="quote">what about 11k front 7k rear?

what rates are good for a stock crx bro?</TD></TR></TABLE>

450 front/550 rear

aka 8kg front, 10kg rear is a good place to start.
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Old Feb 10, 2006 | 08:24 AM
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i'm just wondering why the fronts should be less than the rears? is it because it's an ff?
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Old Feb 10, 2006 | 09:11 AM
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Default Re: (VeilSide_Mas)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VeilSide_Mas &raquo;</TD></TR><TR><TD CLASS="quote">i'm just wondering why the fronts should be less than the rears? is it because it's an ff?</TD></TR></TABLE>

sort of. in a fwd car, you're always battling understeer or looking for ways to make the car handle more neutrally. one of the ways this is done is by bumping up rear spring rate.

it's not the most comfortable way to setup springs, but it's the way springs ought to be setup in race cars/track cars. which spring rates you like depends on your driving style, but 450/550 is generally a good starting point. 400/450, 375/450 400/500 are some other popular spring rate setups as well.
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Old Feb 10, 2006 | 02:29 PM
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Default Re: (bad-monkey)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bad-monkey &raquo;</TD></TR><TR><TD CLASS="quote">

sort of. in a fwd car, you're always battling understeer or looking for ways to make the car handle more neutrally. one of the ways this is done is by bumping up rear spring rate.

it's not the most comfortable way to setup springs, but it's the way springs ought to be setup in race cars/track cars. which spring rates you like depends on your driving style, but 450/550 is generally a good starting point. 400/450, 375/450 400/500 are some other popular spring rate setups as well.</TD></TR></TABLE>

I run 450f/400r with a 22mm ITR rear sway and no front sway on my 99 Civic coupe. It rotates just fine I don't want to go any higher on the back because its stif enough for what my car does 99% or the time (drive on the streets).

In fact i don't have the rear sway hooked up right now (waiting to get an ASR brace) and the car is still pretty neutral.
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Old Feb 10, 2006 | 02:33 PM
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thanks man appreciate it so if i have adj shocks i should harden the rear more right?
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