poindex30

Hey guys,

I just replaced my tired old shocks and struts with Koni yellows and I went with the stiffer 200lb. springs up front. Besides commuting I like to use my car for autocrossing. I'll get to the track someday.

My times have really come down compared to the rest of the field but now my car pushes in some corners maybe due to the stiffer springs up front. I'm considering going to the M030 968 rear sway bar to correct the understeer problem. Will this work or should I change both the front and rear sway bars? Will there be any negative effects if I change the rear only?

Thanks,

Mickey

Serge944

There will be no ill effects from upgrading the rear bar if youre currently understeering. It'll simply make your car more balanced.

poindex30

Excellent! That advice just saved me $300 (on the front sway bar).

Hmmm, what will make me faster for $300? heh heh heh.

Scott at Team Harco

It is difficult to know if this is the best solution to resolve your understeer condition. It is certainly the simplest method to increase the rear roll stiffness and possibly offset the increased roll stiffness you introduced with the stronger front springs.

The optimal solution would be to match the rear torsion bars to the front springs you installed. Then fine tune the car with different sway bars.

To answer your question in a simple way - yes, the rear bar will help. It is also possible it may provide too much oversteer (though not likely). Let us know how well it works at fullfilling your expectations.

xsboost90

considering you have turbo sways front and rear factory..... if you put 200lb springs in the front, you could upgrade to the mo30 rear, but you will probl. want it set to the loosest setting. I was going to say your settup should be fine the way it is but i guess the added weight of the turbo stuff will throw that off. I was considering upgrading just the rear of my 44 to 968 sway and putting 250lb springs in the front- up from 200lb w/ turbo sways front and rear.

pete944

That's what I did. I have the rear M030 bar and left the front alone. I have 200# coilovers on the front and my rear tires are pretty wide so I have the bar set to the stiffest position. It still has a slight bit of understeer but not much. Increasing the width on the front tires should balance it out nicely.
Currently I have 205/50/17's on the front and 255/40/17's on the rear. I also run a set of 18" wheels that are 225/40/18 in front and 285/30/18 in the rear.

DDP

Yes that is what I am planning on doing also.

M758

Yes it should probably work

It will not however be ideal.

Here is my example

I ran my 944-spec with 350lbs front springs front welmeister 28 mm sway bar. Rear I ran 28 mm t-bars (254 effective rate) and 22 mm rear welt sway bar.

Car had lots of understeer, but I could dial that out with lots of negative camber 3.5 deg, a little softer front sway bar and full stiff rear sway bar. Car balance was pretty good, but had limitiations. My biggest was rear wheel spin out of tight corners. I did not have a limited slip and the soft front roll settings and stiff rear bar limited rear traction.

I since replaced th 28 mm tbars with 30 mm units. I then stiffened the front and vastly soften the rear bar. Result was still a good balance, but much better rear traction and less negative camber in front. This resulting in better braking too.

So it will work, but you will compromise in other areas. If they do not become an issue you are fine.