Wheels & Tires Grabbing the road and stopping.

Well changed springs for the 3rd time!

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Old Apr 18, 2005 | 12:51 AM
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Well changed springs for the 3rd time!

Long story short. Eibachs were too low, Tein 350z springs my camber was wayy off. Thought the right driverside spring dropped 3/4 of a inch so had to replace the springs. SO I bough tein H techs for the G. Just got done, before with tein H techs for the Z, driver 26 1/4 passanger 27. Today with Tein H techs for the G 26 1/2 driver 27 passanger. Well I guess it wasnt the springs. So I started thinking, you know that big **** box that the Vortech came in was 70lbs. and 95% of those parts are on the driver side. FUGGGGG it was the Vortech all along! Atleast thats the only thing I can think of. Anyone else have any ideas?
 
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Old Apr 18, 2005 | 01:23 AM
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man that must suck. so the Tein H tech for the G and the Tein H tech for the Z give u pretty much same ride height with the Vortech?
 
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Old Apr 18, 2005 | 01:33 AM
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did you already get an allignment? After an alignment it should balance out.

Before the alignment all 4 of my corners were off and I made sure each side was adjusted exactly the same. After alignment the rear was exactly the same height measured to the 8th. The front was still a little unbalanced because it could not be brought back to spec and the camber/toe/sai/caster angles were drastically different from each side
 
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Old Apr 18, 2005 | 07:20 AM
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Originally Posted by G352NV
Long story short. Eibachs were too low, Tein 350z springs my camber was wayy off. Thought the right driverside spring dropped 3/4 of a inch so had to replace the springs. SO I bough tein H techs for the G. Just got done, before with tein H techs for the Z, driver 26 1/4 passanger 27. Today with Tein H techs for the G 26 1/2 driver 27 passanger. Well I guess it wasnt the springs. So I started thinking, you know that big **** box that the Vortech came in was 70lbs. and 95% of those parts are on the driver side. FUGGGGG it was the Vortech all along! Atleast thats the only thing I can think of. Anyone else have any ideas?

Looks like you need to get coilovers and corner balance the car...
 
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Old Apr 18, 2005 | 07:29 AM
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Amazing that people don't notice how much a car drops when they sit in drivers seat or that it varies full/empty gasoline [20x 6.2=~124 pounds].

They get fooled by published spring stiffness and not correcting for trigonometric angles and spring mounting locations on suspension members.

Most cars [3000-4000 pound weight] have a net spring individual wheel rate [130-160 lb/inch front] and 100-120lb/in rear]].

Yep 70 pounds plus driver should drop that side by at least 1".

Asymetrical weight, why car handle differently turning left and right. Different weights [static] on tires.
 
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Old Apr 18, 2005 | 09:26 AM
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so therefore a car should be aligned with the drive sittin in the driver seat?
 
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Old Apr 18, 2005 | 11:57 PM
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>They get fooled by published spring stiffness and not correcting for trigonometric angles and spring mounting locations on suspension members.


not fooled, just using the advertised numbers are reference points.
But I do agree, that the car feels completely differently between a less than 1/4tank
of gas and full tank of gas. The spring rates are almost too high on my car at
less than 1/8th tank of gas for the luxury ride im after.
 
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Old Apr 19, 2005 | 08:41 AM
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Usually not a spring rate problem [oem designs] but a shock absorber problem.

Consider the differences in shocks as the ambient temp changes and strokes per mile heats the shock up........serious problem with conventional shocks without external fluid storage area. Used worn shocks {more than 15-30,000 miles} are quite different from brand new shocks.

Real problem with heavier than oem tires/wheels.......rebound control goes to heck fast in just a few miles.......especially in Summer heat.

Consider the variable weight inside a car [fuel, trunk and pasengers] at least 20% sometimes 25%.

What weight do you design for, that it won't be wrong for some situation as the ride height changes 2" [+-1"]..............avoid weight challenged passengers! {politically correct for FAT}
 
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Old Apr 19, 2005 | 05:08 PM
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Originally Posted by haze
so therefore a car should be aligned with the drive sittin in the driver seat?
I've had mechanics ask me how much I weigh, then they put the equivalent weight in sandbags on my driver's seat for the alignment.
 
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Old Apr 20, 2005 | 12:10 AM
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>Usually not a spring rate problem [oem designs] but a shock absorber problem.


We're talking about the differences in ride height per corner, right? if so, the springs
hold the car up, not the dampers. that's why on a coilover system you change the
spring seat location (up/down) and not replace the dampers. ... i hope you're
talking about something else.
 
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