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Coil over spring rates?

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Old Jan 13, 2009 | 11:55 AM
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From: Grand Sport #82
Default Coil over spring rates?

What spring rates would be good for a GS (1996) C4 Corvette.

The car is used as a track day car (road racing, and NEVER drag racing)
Performance is way higher up my list than comfort.

My car is a Z51, but feels like it setup for comfort rather than performance to mee...

Any ideeas welcome..
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Old Jan 13, 2009 | 12:01 PM
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Originally Posted by Lars87
Any ideas welcome.
I would re-valve the stock shocks and use the saved money for track events. Improving your driving will net more gains then coil overs. Unless your already excellent.
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Old Jan 13, 2009 | 12:29 PM
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Originally Posted by Aardwolf
I would re-valve the stock shocks and use the saved money for track events. Improving your driving will net more gains then coil overs. Unless your already excellent.

More talent would not mean less roll or more stiff suspension..

BTW this is NOT a Coil over VS leaf thread!!
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Old Jan 13, 2009 | 01:13 PM
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I would give Gary at Hardbar a call. he sells the Penske-shocked coilovers with dual-rate springs for C4/5/6 vettes, and knows his stuff. Forum member ghoffman
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Old Jan 13, 2009 | 01:44 PM
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Originally Posted by Lars87
More talent would not mean less roll or more stiff suspension..

BTW this is NOT a Coil over VS leaf thread!!
If it's more important to you to spend money then to be a better driver then yes that's true.
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Old Jan 13, 2009 | 10:54 PM
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I agree with what is said above, but I would like to know what people are running for spring rates. I want to do a cheap coil over setup on the front (maybe the back later) of my 96, and I was thinking of starting with an 8" 600 lbs spring. Again, all road racing and no drag racing.
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Old Jan 14, 2009 | 03:45 AM
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Originally Posted by Mojave
I agree with what is said above, but I would like to know what people are running for spring rates. I want to do a cheap coil over setup on the front (maybe the back later) of my 96, and I was thinking of starting with an 8" 600 lbs spring. Again, all road racing and no drag racing.
Excatly, I would like to know what spring people are running on their cars and for what purpose..

I hear what you are saying about money vs. track time.
BUT if you can get the Coil over setup cheap, then I guess its a clear win, either way it is cheaper than new shocks for, so guess i will try it out.
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Old Jan 14, 2009 | 09:26 AM
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Originally Posted by Mojave
I agree with what is said above, but I would like to know what people are running for spring rates. I want to do a cheap coil over setup on the front (maybe the back later) of my 96, and I was thinking of starting with an 8" 600 lbs spring. Again, all road racing and no drag racing.
Your old thread has lots of info. Try making a thread on this in tech or the racing section for more?

http://forums.corvetteforum.com/c4-t...-question.html
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Old Jan 14, 2009 | 02:03 PM
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I'm building a CAD model to work out mine

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Old Jan 14, 2009 | 11:01 PM
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Default spring rates

hi, i had the 8 inch springs on my coilovers on the 1991 zr1. the front rate was 500 lbs and the rear rate was 300 lbs. i also have the moraca fx3 revalved shocks. this was a very stiff setup for regular highway driving even on the lowest shock setting. at speed, this is an excellent setup. combine this setup with 1 mm toe in total on front end, 1/2 mm toe out on rear end and 2 mm neg. camber front and rear and 7 1/2 degree caster and you will have a better than great open road race set up. also, the car is lowered as seen in my avatar. it took alot of experimenting to come up with this set up. hope that this helps. seeya
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Old Jan 14, 2009 | 11:45 PM
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Originally Posted by BrianCunningham
I'm building a CAD model to work out mine
<neat pic of suspension>
I'd be very interested to see what you come up with as far as exact motion ratio and spring rate. What program are you using to model it?
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Old Jan 15, 2009 | 12:35 AM
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SolidWorks
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