g60pops

i am in the process of fitting some KW V1 coilovers to a c2 cab and i have a set of H&R sway bars from my previous c4, is it worth fitting them to the c2 cab?
I am hesitant due to their 24mm and 26mm size

ras62

I have gone this route on my C2. KW V1 with H&R bars, I also added a strut brace for good measure. Impressions so far are good.
The bars dont affect the ride or damping, but the change they make during fast cornering is very evident, the car is absolutely flat. Where the original set up seemed to 'lock up' under these conditions the KW's continue damping properly. The front / rear balance is excellent under all conditions.
It is early days yet, also worth noting that all the miles I have managed have been in freezing conditions so not optimal for either the tyres or the suspension. It warms up next week so I can test over more demanding conditions. Just got to put on some new RS engine mounts and then I will be able to comment in more detail.

g60pops

That is good to hear mate, i shall go ahead and fit the H&R bars together with the V1s.
Already have strut brace fitted and have ordered the rs engine mounts together with new top mounts and gaskets.

Andy Roe

I've the same with my V3's. Very pleased with it so far.

boxsey911

Hmmm.....I've been holding out to get genuine RS bars but at half the price for the H&R, you guys have got me thinking now!

anto1150

I would never put stiff suspensions and big bars on a cab... IMO go with RS bars and not-too-stiff springs/dumpers. That said, I vould choose a V3 setup and set it firm, but not stiff.

just my 0,00002 cents

ciao

g60pops

if i had an bigger budget then i would have gone for the v3s

anto1150

big bars will generate a lot of flex... at least a 26 rear...
I think V1s won't be too stiff, so could be a good start. Then you could fine-tune with II hand bars from those who change theyrs...
What bars are you running at the moment?

ras62

The reason for choosing the KW V1 was very simple, I spoke with KW. They advised that the V1 is made by first getting the V3 optimised and then using these settings to produce the V1 i.e no adjustment. The damping and rebound settings sit within the V3 range, the spring rates are the same, build quality is the same, but the price significantly less. I know from previous experience that I would not use the adjustments, it is just too much trouble on a 911.
The H&R bars are the same size as the RS on the front but bigger on the rear, but they are a matched pair built for use with coilover suspension. The difference over standard is surprising and imho a very worthwhile mod, especially if you are doing track days.

anto1150

RS rear is 18: a completely different route compared to H&R... which IMHO seem to be designed to address the C4 understeer.
As said, I wouldn't stress a cab too much... at least not before trying other solutions.

g60pops

What settings do you have the front and rear bars at?

ras62

Both bars are set to minimum, front and back i.e the holes furthest from the horizontal bar. Adding these bars should aid torsional stiffness of the chassis which must be a positive, especially on the Targa.

Steve Weiner-Rennsport Systems

Nossir,..no effective change whatsoever.

Stiffening the suspension: springs or bars, has no effect unless you've added more stiffening to the chassis itself. This means sill plates, rear seat bracing, roll bars/roll cages, etc.

ras62

...."This means sill plates, rear seat bracing, roll bars/roll cages, etc".
The roll bars are part of the chassis, either directly or indirectly depending on your point of view, so changing them must surely aid the stiffness of the chassis?

KaiB

I think Steve means roll bars in the sense of a half cage, or roll-over protection.

Think about how and where the "anti roll" or sway bars work, and what they do.