sandwood

According to Michael Grassl, of KW in Germany,
"First of all, the rates for our V3 kit are 342 lbs/in (60N/mm) front and 285 lbs/in (50 N/mm) rear."

And he stated that the v3 as sold is designed to be run with torsion bars in place.

I'm going to run them with the M030 tb as well.

ivai

What is Michael Grassl's contact info? I wasn't aware that one could go through KW/Germany here in the states.

sandwood

Michael.Grassl@kwautomotive.de

he responded quickly. iirc, he also mentioned that you can get custom stiffer springs for the v3, but the valving does not permit a really high rate of the sort you would need to delete the tb.

DVC

I've only been torsion-bar-less since my engine swap, but I haven't noticed any difference in rigidity or creaking. It's very nice and simple to adjust the ride height in less than 10 minutes, with no indexing etc. But for the best suspension I'm willing and able to go back.

It sounds like the rear KW couldn't handle a 500lb spring, sans TB?

DVC

Anders- What rear spring rate are you using? Will do on the writeup.

Thanks

333pg333

Again I would defer to Michael Grassl. If you can deal directly with him which is what I wound up doing, then you will get all the answers you need. I think in the Variant form, the valving on the shocks is not designed to work with rates like 500lb/in. If you go for a custom set, then no problem at all. I was going to get a V3 system, but one thing and another led me to the 2-way race setup and my rates are 616lb/in and 708lb/in effective coilover rate. Coupled with solid bushings/bearings, adj camber plates, and R-spec tyres mean it should be undriveable on the road. It's not, it's better than previous Mo30 as far as compliancy goes, offering a great deal more traction too.

anders44

my kw competition 2way is 50N with torsionbar and 120N without.

DVC

Thanks 333. I sent MG a message and I'll let you know what he says. Thanks for all of the help. May I ask why you went V2 over V3?

Thanks Anders. Correct me if I'm wrong guys, 120N = 684lb/in

ivai

Actually, Anders and Patrick are not using "V2", they're using Competition 2-ways. These are a step above the V3's. There also are Competition 3-ways, but they cost something like $7k. The competition 2-ways are a completely custom setup based on driver experience, preference, types of tracks you'll be driving on, etc.

DVC

Ahhh, thanks for the clarification, Jeff. I wonder what rate the "Club Sport" V3's have, that sawood12 spoke of. I'll try to find out.

SpeedBump

I run the KW V3 with TB on one of my cabs, I knew I was buying them before I bought the car. They work very well on the street and eat up bumps. I won't have the car on the track before October so i can't say how they do there yet.

Here's a link to Vaino's writeup http://www.**********/upgrades.htm
He also bought his from autoanywhere.

333pg333

"Eat up the bumps is right". This translates into traction and that translates into time. Do the math and then just buy them is my advice!
Ask these guys:
http://www.porscheclubgbforum.com/tt.asp?forumid=15
http://www.porsche968uk.co.uk/phpbb/index.php

DVC

Mark- That sounds hard to beat! Thanks.

Patrick- Thanks for the links! Michael Grassl echoed your sentiments exactly. He said to go TB-less you'd want at least 100N rear rates. It's odd that there are quite a few 968's in the US with the KW's, but not so much 951's.

I want them....even though they're purple

SpeedBump

Everyone I know with KW suspension (various makes of cars totals about 25 people) has loved them for track/street usage.
If you are going for the race version - one of our forum sponsors sells them but the name slips my mind.

DVC

Thank you for all of the help, gentlemen. I'm sold and will post my results.