Tender/Helper springs.

[Massive Lee]

No not really. Just with the inherent lifting of the inside of the car during corner I was something that will push the inside wheel down....Even if at 50lb/in that's only a little bit.

I reread the whole thread as I felt I was missing something. My conclusion is that you are using the wrong medecine for the wrong reasons. And not thinking properly. In fact you don't need springs to push the inside wheels down, you need a spring rate that will make the outside suspension push up, and prevent body roll.

If you want to keep the inside wheel from lifting, then you should keep bodyroll at a minimum by raising spring rate, and fine tune with swaybars (but carefully), or lower your roll center by dramatically modifying your suspension geometry.

What is your fronr and rear rates? What tires do you use? What other suspension mods do you have?

[DSP74]

I want the springs to keep the main spring seated when unloaded simple as that.

25mm M3 bar, 450ft, 550 rear, NO rear bar (a bit of a departure from our S14 conversation). Koni SA's, Poly everywhere. 15x10's 275/35/15. Undecided on camber plates.

Some stuff I dont have yet and some I do. Those spring rates are where I'm at as I DO have those on hand.


Regardless these cars have a tendency to lift the inside. Where is it wrong to try and tune that out as much as possible.....In fact I think I'm going to be FORCED to tune that out due to the lack of funds for a good diff. But my setup will be better because of the lack of the diff......(and that much better WITH a alt ramp diff)

[DSP74]

Have you had your car scaled (I have not)? We can figure how much your springs are compressed based on the weight of the car and the springs LB/IN rating. Then after reviewing several pictures a reasonable guestimate of body roll in degree which will give us how much the inside is extended.....It should be simple to see whether or not the car completely unloads or not during cornering.

[einstein57]

Every know and then i see rear h&r race springs for sale. If your running the rear perches they stay in place quite nicely.

[DSP74]

H&R Race springs that most folks refer to are the regular stock replacement type lowering springs.

The spring always drops out of position on a race spring/ride height adjuster setup

[DSP74]

OK some numbers.

The Vorshlag E30 at the beginning of their prep was 1,174lbs. There were several things later in that cars prep that made the rear of the car lighter. Basically a removal of any exhuast that would add weight to the rear of the car, a battery 20+lbs lighter and maybe a couple other things also.

1174/2=587lbs per wheel.

A 650lb spring again devided by 2 to account for the motion ratio equals the equivalent to a 325lb spring.

So at static height a 650lb spring is compressed LESS THAN 2"

[z31maniac]

I thought motion ratio was .64, not .5?

Just throwing that out there.

[DSP74]

Very well could be.

I was simply pulling numbers out of my ass.....Still goes to show that the wheel can't drop down very far without the spring becoming unloaded

[DSP74]

Got the springs today. As I suspected to fully compress the springs takes close to 150lbs. 165lbs to be exact.

'IF' the main spring unloads this would help to keep an inside rear on the ground.

[2002maniac]

remember, the vorshlag guys arent running an LSD in that car.

[DSP74]

That doesn't matter at all.

Ultra stiff springs are only intruducing a problem that a stout LSD crutches.

[DSP74]

I reread the whole thread as I felt I was missing something. My conclusion is that you are using the wrong medecine for the wrong reasons. And not thinking properly. In fact you don't need springs to push the inside wheels down, you need a spring rate that will make the outside suspension push up, and prevent body roll.

If you want to keep the inside wheel from lifting, then you should keep bodyroll at a minimum by raising spring rate, and fine tune with swaybars (but carefully), or lower your roll center by dramatically modifying your suspension geometry.

Care to answer this question?

Have you had your car scaled (I have not)? We can figure how much your springs are compressed based on the weight of the car and the springs LB/IN rating. Then after reviewing several pictures a reasonable guestimate of body roll in degree which will give us how much the inside is extended.....It should be simple to see whether or not the car completely unloads or not during cornering.

Maybe want to see this post also.

OK some numbers.

The Vorshlag E30 at the beginning of their prep was 1,174lbs. There were several things later in that cars prep that made the rear of the car lighter. Basically a removal of any exhuast that would add weight to the rear of the car, a battery 20+lbs lighter and maybe a couple other things also.

1174/2=587lbs per wheel.

A 650lb spring again devided by 2 to account for the motion ratio equals the equivalent to a 325lb spring.

So at static height a 650lb spring is compressed LESS THAN 2"

[Massive Lee]

Care to answer this question?

Maybe you need to understand suspension a little more. Some people here with much great enginering and tracking experience are telling you how wrong you are in your assumptions, and you still don't listen. I don't think I am interested in going any further with you. Do whatever you want.

Thanks.

[DSP74]

Maybe you need to understand suspension a little more. Some people here with much great enginering and tracking experience are telling you how wrong you are in your assumptions, and you still don't listen. I don't think I am interested in going any further with you. Do whatever you want.

Thanks.

Actually all you have to do is use some common sense. It doesn't take an engineer to realize that a spring compressed 1" will be completely unloaded during body roll.

All you have to do is answer the question. Proof is in the pudding. How much do your rear springs compress?

Shit you even posted a picture of your car ON TWO WHEELS. So you must not be doing something right.

Till I see someone qualified to be the end all/be all of e30 suspension information I'll go ahead and keep doing things wrong I guess.

You are wrong. You are simply assuming what you say to do is right because everyone else is doing it.

[Massive Lee]

Hey buddy. Looks like you don't read much or are playing dumb. I explained everything on a previous post. Either on here or on S14.net and I kinda recall than even Jay Morris replied to you. So, please, stop harrassing me. I find you very annoying now. Thanks.