Thinking of Replacing Strano's for Eibach's
FYI,
You would be correct about the 360lb.in. springs offering a softer ride compared to 550lb.in. springs, if both were at stock ride height.
But, with virtually no suspension travel the sportline 360lb.in. is rather meaningless since the spring rate of the bump stops is also a factor in the overall spring rate.
Last edited by 99Bluz28; May 21, 2009 at 06:30 PM.
FYI,
You would be correct about the 360lb.in. springs offering a softer ride compared to 550lb.in. springs, if both were at stock ride height.
But, with virtually no suspension travel the sportline 360lb.in. is rather meaningless since the spring rate of the bump stops is also a factor in the overall spring rate.
Yea, it seems the whole city is jacked up! I don't think I'd go back to stock springs - I like the lowered look. Too bad you can't get the best of both worlds.
If you bought a TA (and refer to it as "Batmobile") and complain about a stiff ride, maybe you should consider a Buick or Mercury and use the name "Catwoman" instead.
These are performance cars. With performance comes a healthy serving of harshness with a occasional side of finicky. It comes with the territory.
/soapbox
You compared rates. You didn't compare free heights.
If both Stranos and eibachs have the same free height and you apply the same weight to each spring (your car), one spring being 550lb/in and the other being 360lb/in, doesn't it stand to reason the 360 spring will compress MORE?
And what happens when it compresses MORE?
LESS ride height, LESS clearance and LESS suspension travel. So you can either ride on 550 springs or the bump stops. NOW define "harsh" ...
Last edited by mitchntx; May 21, 2009 at 04:24 AM.
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Mitch is right on the money.
Let's not consider a change in damping to see what happens. Let's not consider that any lowering spring takes working travel from the suspension. Let's just jump right to all the work involved in changing springs--and in this case to a set that will put you onto the bumpstops harder and more often.
If you want to change springs then Pro-kit would be better than Sportlines. They are 400 and not as low as Sportlines. But considering how many change the other way from Eibach to mine, and report improvements I don't think that's a particularly wise idea.
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Mitch is right on the money.
Let's not consider a change in damping to see what happens. Let's not consider that any lowering spring takes working travel from the suspension. Let's just jump right to all the work involved in changing springs--and in this case to a set that will put you onto the bumpstops harder and more often.
If you want to change springs then Pro-kit would be better than Sportlines. They are 400 and not as low as Sportlines. But considering how many change the other way from Eibach to mine, and report improvements I don't think that's a particularly wise idea.
I was aware that lowering it will provide me with a harsher ride. If I lived in another area - or even in the suburbs of Chicago - they will be jus' fine for me. This is more of an environmental factor. The fact that the roads over here are really crappy lately, (getting progressively worse), is making me think of changing my setup.
http://archives.chicagotribune.com/2...-potholesdec30
Check out these videos:
http://www.youtube.com/watch?v=GN71V-V7F18
http://www.youtube.com/watch?v=UJYeZ6lfydU
Stories about potholes are becoming more and more common. It was said that last year had the worst we've seen in a decade and now they are saying that it is even worse this year.
This is also coming from a city that is voting to keep the potholes and horrible roads as a means of deterring speed and "calming" traffic. Basically Todd Stroger (Cook County Board President) is spending money elsewhere where it is not needed and claiming we don't have the money to spend on roads. While he raised the Chicago tax rate to 10.25%!!! The highest in the nation! (End Rant)
So anyways, Sportlines would ride worse because it'll hit the bump stops harder. How bout DMS or the Pro-kit? I had a friend do the JasonWW Upper Mount Mod which allows for more suspension travel.
Last edited by 02TransAm/Batmobile; May 21, 2009 at 02:52 PM.
You compared rates. You didn't compare free heights.
If both Stranos and eibachs have the same free height and you apply the same weight to each spring (your car), one spring being 550lb/in and the other being 360lb/in, doesn't it stand to reason the 360 spring will compress MORE?
And what happens when it compresses MORE?
LESS ride height, LESS clearance and LESS suspension travel. So you can either ride on 550 springs or the bump stops. NOW define "harsh" ...
What's probably happening is your feeling the bump stops in the back making it more harsh...firming up the Koni's helps reduce the frequency you'll hit the bumpr stops. Try it...it's free right?
Feel's great on the road.
Last edited by z28ss4me; May 22, 2009 at 06:38 PM.
Koni SA = adjustment of rebound only (top of shock), compression is not affected by any adjustments
Koni DA = separate adjustments for rebound (top of shock) and compression (**** at bottom of shock)





