spring question
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Pro
Joined: Oct 2011
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spring question
okay, my 94 vette came with the stock base springs, roughly 75 up front and 39 in the rear, however I will autox the car and I wanted to swap the springs for the Z07 springs. these are hard to find, the front would be 91 and the rear would be 52. I found a 52 for the rear but no luck on the 91, but I did find a 93 which was base on a couple of other years like 1992 if memory serves. So I bought both of those and for the front I also bought QA-1 with the double clickers. I will install the same shocks on the rear next month. Anyway they all went in on Friday. First off, the handling is now amazing, it really feels fantastic, and realistically not much harsher, probably due to the shocks, but anyway Wow!
The only issue I ran into is that the front now sits slightly higher, like 1/4 inch to at most 1/2 inch, I am not exactly sure how much higher as I did not measure before. I know it is not in my head. I am hopeing that maybe since the springs have not been used in who knows how long they might settle in a bit in the next couple of weeks.
Any other ideas?
The only issue I ran into is that the front now sits slightly higher, like 1/4 inch to at most 1/2 inch, I am not exactly sure how much higher as I did not measure before. I know it is not in my head. I am hopeing that maybe since the springs have not been used in who knows how long they might settle in a bit in the next couple of weeks.
Any other ideas?
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 78
From: Monroe OH
NCM Sinkhole Donor
I don't know where you are getting those spring numbers, but the reason you are sitting higher is due to the higher spring rates. You need to have the car aligned and corner balanced. Also, what kind of tires are you running? Street tires or race compound rubber?
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
I am fairly certain he is referring to the spring rates.
http://www.corvetteactioncenter.com/...usp_chart.html
http://www.corvetteactioncenter.com/...usp_chart.html
Thread Starter
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Joined: Oct 2011
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LTPI, truth is I was refering to spring rates, and you have to keep in mind changing spring rates should not increase or decrease ride height if you are using stock srpings, the softer springs have more arch while the stiffer ones have less arch.
End result the front is settling a bit and it looks like it should. As for the alighnment, yes, of course, however not much really changed, the only real change could have been a very slight camber change due to a change in ride height. either way it will be realigned in a week.
Also, since you asked I am currently running hankooks V-12, so street tires.
End result the front is settling a bit and it looks like it should. As for the alighnment, yes, of course, however not much really changed, the only real change could have been a very slight camber change due to a change in ride height. either way it will be realigned in a week.
Also, since you asked I am currently running hankooks V-12, so street tires.
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 78
From: Monroe OH
NCM Sinkhole Donor
I am fairly certain he is referring to the spring rates.
http://www.corvetteactioncenter.com/...usp_chart.html
http://www.corvetteactioncenter.com/...usp_chart.html
LTPI, truth is I was refering to spring rates, and you have to keep in mind changing spring rates should not increase or decrease ride height if you are using stock srpings, the softer springs have more arch while the stiffer ones have less arch.
End result the front is settling a bit and it looks like it should. As for the alighnment, yes, of course, however not much really changed, the only real change could have been a very slight camber change due to a change in ride height. either way it will be realigned in a week.
Also, since you asked I am currently running hankooks V-12, so street tires.
End result the front is settling a bit and it looks like it should. As for the alighnment, yes, of course, however not much really changed, the only real change could have been a very slight camber change due to a change in ride height. either way it will be realigned in a week.
Also, since you asked I am currently running hankooks V-12, so street tires.
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Keep in mind that the best tire for street/autox would be the dunloup direzza Z1 starspec. the problem that I have is I am running C5 wagon wheels so finding the correct sizing is an issue, none of the direzza Z1 will fit, the good Hankook rs-3 will not fit either, nor will the KhumoXs. The Hankook V-12 is not bad but not great either, I chose it due to price, as there was alot more to do on the car. For my wheels the best choice for autoX would be the bridgestone PE-11, all the aritcles and tirerack all confirm that this tire is great for autox, maybe slightly less good than the Direzza Z1 but more predictable than the Z1. Problem is the V-12 I used cost me 800 for all 4 while the birdgestones would have been clost to 1300. I will go with them when I kill the ones I am using now.