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Old 03-20-2010, 11:57 AM   #21
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esplain preas.
I had 7" 550/300 QA1 springs. I had those stupid plastic things installed. For some reason I thought the bump would travel through them, much like the FCM 1/2" spring spacer. I just wasn't thinking.

I rode like ****. So I got 400/250 7" QA1 springs in a massive trade. And put them in yesterday along with NB and ISC racing tophats.

Once removing the shocks, I found that I'm stupid and those insulators were probably why it rode like **** since I had like 1" of rear travel. I then took pictures comparing the difference in travel with and without them.

Then after installing the new 400/250 springs and setting it up for 12.5" F and and 12.75" rear, as seen in the first pic, the rears decided to settle a little and the left rear seems to be coil binding on some heavy bumps.

So I just purchased the Suspension Spring Specialists 8" 250 lb. springs to replace the 7" ones.

get it?

Quote:
Braineak,
The 400/250 should be a very good setup for the street with performance in mind. As long as your shocks a valved well and you work out the travel/ bind issue, it will me a mean canyon setup. Lots of grip on crappy surfaces.
Well I liked the 550/300 setup, I just didn't like the harshness. I did drive on 550/250 after installing the rears and it was already completely better ride so those insulators were ultimately to blame.

The 400/250 drove just as good as I remember the FM springs I had prior, perfectly comfortable on the street yet very competent when I push it. Once I get the new 8" springs in the rear I think I'll finally be done touching that **** for a while.
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Old 03-20-2010, 12:03 PM   #22
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Originally Posted by Braineack View Post
I had 7" 550/300 QA1 springs.

I rode like ****. So I got 400/250 7" QA1 springs in a massive trade. And put them in yesterday along with NB and ISC racing tophats.

I first found that I'm stupid and those insulators were probably why it rode like **** since I had like 1" of rear travel.

Then after installing them and setting it up for 12.5" F and and 12.75" rear, as seen in the first pic, the rears decided to settle a little and the left rear seems to be coil binding on some heavy bumps.

So I just purchased the Suspension Spring Specialists 8" 250 lb. springs to replace the 7" ones.

get it?



Well I liked the 550/300 setup, I just didn't like the harshness. I did drive on 550/250 after installing the rears and it was already completely better ride so those insulators were to blame. The 400/250 drove just as good as I remember the FM springs I had prior, perfectly comfortable on the street yet very competent when I push it. Once I get the new 8" springs in the rear I think I'll finally be done touching that **** for a while.
So the 7" 250 QA1s that you had didn't really hold your car up due to coilbind but only on one side, but would have worked well otherwise. I'm guessing with my RL crap I'm not going to be happy with the 7" 250 QA1s either. Ricelands are on their way, just glad I didn't order the rear springs just yet. I'll have to keep researching.
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Old 03-20-2010, 12:05 PM   #23
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Stop ordering cheap *** springs. Ground control ftmfw!
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Old 03-20-2010, 12:17 PM   #24
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Originally Posted by oilstain View Post
So the 7" 250 QA1s that you had didn't really hold your car up due to coilbind but only on one side, but would have worked well otherwise. I'm guessing with my RL crap I'm not going to be happy with the 7" 250 QA1s either. Ricelands are on their way, just glad I didn't order the rear springs just yet. I'll have to keep researching.

Granted they were previously used springs, but when I went out and looked again part of my wheel was resting on the curb which was raised so it was compressing the spring on that side a little more. Regardless, there's nothing wrong with QA1 springs, the problem is the length I needed in the rear; both sides will bind as is.
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Old 03-20-2010, 01:12 PM   #25
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I seriously had those springs on my car for two days....looks like QA1s aren't the cheap quality spring we thought they were...sucks *****.
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Old 03-20-2010, 02:32 PM   #26
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The drivers side rear will always be lower due to the increased weight compared to the pass side. Quit playing around with making the adjustments (threads the same) go get some scales and set your cross weight.
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Old 03-20-2010, 03:18 PM   #27
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springs dont tend to sag. there may be some slight inconsistency between individual springs from the same batch, but mostly they will last nearly forever and not settle over time.
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Old 03-20-2010, 03:20 PM   #28
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like i said, my driver side is always .25" lower than the passenger. it was this way when I had FM springs, the 550/300s after the suspension settled and now these.
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Old 03-21-2010, 01:47 PM   #29
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could you please post pictures of comparison with nb/isc top hats?
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Old 03-21-2010, 09:18 PM   #30
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no, because i took none

Driver side settled .25" lower than passenger the pictures I took above, my tire was up on the curb so it wasnt sitting level. I think one main issue is all the weight in my trunk. I have an amp, sub, jack and two stands, torque wrench, metric socket set, few other tools. I do nothing but add weight to my miata, albeit I think I've come to the determination that the 7" 250# is borderline. They compress too much under load and the coils are too close together, but I do have the collars cranked up a bit so it's making it worse.

Without taking measurements to see how much they do compress under load, I'm not sure even with NA tophats theyd be any better, you'd still need to sit low and hope the shock hits before the coils.

Then again, the GC 375/250 (6" front/7" rear) kit that most people run does not have this issue...so who knows what my deal is, gotz to be deez isc tophats.
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Old 03-21-2010, 11:16 PM   #31
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Here's how it looks:



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Old 03-21-2010, 11:24 PM   #32
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Fatten the wife up and make her ride with you.
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Old 03-21-2010, 11:40 PM   #33
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I think when i get my ricelands, i am going to go with a 250# 8 inch, should that solve this problem?
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Old 03-22-2010, 09:20 AM   #34
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This thread reminds me that I have FCM spacers to sell.
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Old 03-22-2010, 09:32 AM   #35
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Fatten the wife up and make her ride with you.
She weights 108 lbs...It's going to take a lot of chocolate.
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Old 03-22-2010, 09:38 AM   #36
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Originally Posted by chicksdigmiatas View Post
I think when i get my ricelands, i am going to go with a 250# 8 inch, should that solve this problem?

I'm really not sure, it's probably safer, the CG springs are 7" 250# so I'm unsure why I'm having this issue. It could be a little bit of the weight in my trunk, the ISC tophats with too much travel. When I get back from GA I need to measure how much the springs compress and then pull the weight out of my trunk and see how it compares. I also have some preload on the springs to keep the ride height taller, so that makes the issue worse. Had the springs have no preload before the weight of the car compresses them, it'll probably be fine...This is probably also why FM doesn't reccommend different tophats even with their own springs...
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Old 03-22-2010, 09:39 AM   #37
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Swap the springs left to right so that it's even with you in the car. Lol
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Old 03-22-2010, 09:46 AM   #38
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eh, or i install my 8" springs when they come and adjust them evenly once they settle unevenly again.
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Old 03-22-2010, 11:25 AM   #39
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Quote:
Originally Posted by ArtieParty View Post
This thread reminds me that I have FCM spacers to sell.
I'm interested in those
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Old 03-22-2010, 05:40 PM   #40
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Doing the math based on what I think the coil thicknesses are. I come up with a sprung weight of 560lbs to that corner.

That's compressing the 7" spring to 4.75"

That leaves me with 1.25" of travel left before bind (assuming 3.5" of the 7" is the coils themselves) 4.75 - 3.5 = 1.25"

The 8" springs, all things being equal, will compress to 5.75" and jack the body height up 1.25" or so. That leaves me with 2.25" of travel before bind. I'll more than likely have to lower the collars in order to decrease the body back to 12.75" so I'll decrease the amount of travel it takes until I hit the bumps.

Will that be enough? dunnozzzzzzz. Am I really gaining travel with the ISC racing tophats? Should I have ordered 9" springs?
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