Yet another spring rate thread - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-11-2010, 07:39 PM   #41
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iscracing tophats only make sense if you're running < 11" ride height.
My exploded rear bump stops on my daily tell a different story, on stock springs.
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Old 10-11-2010, 07:39 PM   #42
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god i want my asts to be done do i can install them and get to *** raping around the track. want to do mum mum mum on some race cubs under braking.
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Old 10-11-2010, 07:41 PM   #43
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My exploded rear bump stops on my daily tell a different story, on stock springs.

I could not run iscracing tophats, with 8" 250# rear springs without binding. I had to either drop the ride below 11" or put a spacer above the bumpstop negating the point.
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Old 10-11-2010, 07:53 PM   #44
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god i want my asts to be done do i can install them and get to *** raping around the track. want to do mum mum mum on some race cubs under braking.
Glory awaits. Its going to be sooooo easy to drive and go much faster.
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Old 10-11-2010, 08:50 PM   #45
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Quote:
Originally Posted by Braineack View Post
iscracing tophats only make sense if you're running < 11" ride height.
Or if you are man enough to run a real spring rate...
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Old 10-12-2010, 10:03 AM   #46
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i need man shocks first.
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Old 10-12-2010, 10:27 AM   #47
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OP, this info is somewhat useless without knowing what ride heights you are thinking of running, and particularly, WHAT TIRE ARE YOU GOING TO BE USING?? With more grip, you are going to need more spring. Also, echoing what is being said, you really need to match shock valving with spring rate.

For street and occasional autocross without regard to competitiveness, and on a street tire, you could use a 700/400ish combo with the right shock and get a good ride, but you'll have to pay for the "right shock." For the street, imo something like a 400/250 combo on some sort of OTS quality shock will be "good enough" without breaking the bank. A pretty popular starter combo would be a Koni Sport adjustable front and a non-adjustable Koni rear. That would be sufficient for a 400/250, and be reasonably inexpensive.
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Old 10-12-2010, 10:37 AM   #48
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I'm trying to get rid of my konis. I want something monotube and not shitty, they've been harsh since day one; with stock springs, FM springs, 550/300 and 400/250 springs.

I rode in another miata the other day with BC Racing Coilovers in 560/450 rates and it felt better in every aspect. I cried a little.

Last edited by Braineack; 10-12-2010 at 10:54 AM.
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Old 10-12-2010, 02:45 PM   #49
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FYI if you order 450/300 springs directly from Ground Control, they will actually ship you 440/300 springs.
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Old 10-12-2010, 02:48 PM   #50
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they probably send 8Kg/mm
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Old 10-12-2010, 02:55 PM   #51
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close, 77 N/mm
the springs are GC150.64.77 - 5.9" long, 2.5" wide, 440lb/inch
tbh I should have probably checked what they were before installing them
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Old 10-12-2010, 03:12 PM   #52
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Baller shocks on a budget:

At that point its not much more for pillow uppers though.

I need those stock-replacements on my daily, lol.
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Old 10-12-2010, 04:01 PM   #53
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$2,829.00 is not "on a budget."
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Old 10-12-2010, 04:08 PM   #54
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Quote:
Originally Posted by Braineack View Post
$2,829.00 is not "on a budget."
LOFL/QTF!

My next best option, personally, is to trade for some stiffer springs, and beg a low-buck re-revalve of my billies. It's hard to justify even a ~$2k setup these days, even though I'd be the first to admit that it would be better.
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Old 10-12-2010, 05:22 PM   #55
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Quote:
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$2,829.00 is not "on a budget."
I predict the 949 "Club Sports" will crush the suspension market.
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Old 10-12-2010, 06:50 PM   #56
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Quote:
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I'm trying to get rid of my konis. I want something monotube and not shitty
Custom re-valved Bilsteins are a world apart from Koni, but not much more expensive than new Koni Sports, which are presently running about $630 at Tirerack.
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Old 10-12-2010, 06:57 PM   #57
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There's a set of MSM's and a set of Hard S Bilstein's on the m.net classifieds currently.
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Old 10-12-2010, 07:20 PM   #58
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You can compromise for the street by running big bars and softer springs to get that track car planted feeling.
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Old 10-12-2010, 10:25 PM   #59
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Quote:
Originally Posted by jacob300zx View Post
You can compromise for the street by running big bars and softer springs to get that track car planted feeling.
Lots of rebound damping will do that too, but your ride goes to hell on anything but the smoothest of roads.
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Old 10-12-2010, 10:28 PM   #60
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I'm in this setup cheap, so it'll work for now. Koni sports, 450/300 qa1's, GC sleeves and fm rear hats set at 12"f/12.5"r FM align. spec. w/ stock sways for now. good enough to play on the old country roads and some autox.
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