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New KW suspension kit in development
#1

We all know how the 968 is one of the best handling cars that Porsche have ever made, otherwise we would not own one (or more), but I can assure you that handling difficulties occur when you add more than 60% more power & torque, especially out on track. As with many before us we looked into the available options:



So we looked at the M030 option first but quite frankly trying to rework a 15 year old design that is out of production was a non-starter.



The Bilstein Escort Cup package was our second choice, but again it is an old design of damper without adjustment, which we believed to be essential in order to fine tune the car for wet/dry & road/track conditions.



After looking at other adjustable damper options we eventually chose KW Variant 3 as our preference. These shocks are making a big impact on the European market in having their bodies made from corrosion free stainless steel (which makes ride height adjustment easy when the rings are not sieze) and because the two way adjustable dampers have a unique high pressure dump valve which relieves excessive damper pressure over bumps (eg track kerbing) to prevent corner jacking.



However with 400bhp on tap, even the excellent standard 968 KW package would not cope with the weight transfer under acceleration, so when their Director offered to re-engineer the package to suit the 9m Supercharged 968 it would have been rude not to accept, wouldn't it?



Just two weeks later our custom designed kit is on my desk. It's not cheap for sure, but the quality is spectacular. I'll take some photos and post them as soon as I can, we will have it on the car soon and will be testing it on track come 18th March. Can't wait!
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#2

Wow. Did you talk to them at the AutoSport Show and that was all it took? KW's are my list for two of my vehicles.
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#3

Since I am shopping, how much is not cheap?
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#4

MSRP on the variant 3 is $2650



968 kw

Spring rates (lbs/inch or Progressive Spring): Front=340 / Rear=285

Part No: 35271009

Footnotes:

1 : Height adjustable on the front and rear axles (threaded strut housings)
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#5

How about sharing with us how you got 400 bhp with supercharging? There has to be a pretty interesting story behind that one.



[quote name='Mark' date='Feb 2 2006, 06:40 PM']MSRP on the variant 3 is $2650



968 kw

Spring rates (lbs/inch or Progressive Spring): Front=340 / Rear=285

Part No: 35271009

Footnotes:

1 : Height adjustable on the front and rear axles (threaded strut housings)

[right][post="15432"]<{POST_SNAPBACK}>[/post][/right][/quote]
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#6

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#7

Colin,



From what are the threaded adjustment rings made? If the adjustment rings are of the same stainless steel alloy as the threaded body, there will eventually be issues, especially for those individuals who make adjustments on a regular basis.



Even if the rings are close in alloy number (304 vs 316), the chance for galling is high. The minute some sort of debris gets lodged in the threads and one goes to adjust the ring vs. the body, the threads could be completely ruined.



Given that the threads are so fine (many threads per inch, to increase adjustability) and stainless steel is typically a very soft metal, I would recommend that KW use a complimentary metal (read: non-stainless, but non-reactive with stainless) for the adjustment rings to help reduce the chance of galling and/or ruining the body threads.
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#8

[quote name='biotechee' date='Feb 3 2006, 04:54 PM']Colin,



From what are the threaded adjustment rings made?  If the adjustment rings are of the same stainless steel alloy as the threaded body, there will eventually be issues, especially for those individuals who make adjustments on a regular basis.



Even if the rings are close in alloy number (304 vs 316), the chance for galling is high.  The minute some sort of debris gets lodged in the threads and one goes to adjust the ring vs. the body, the threads could be completely ruined.



Given that the threads are so fine (many threads per inch, to increase adjustability) and stainless steel is typically a very soft metal, I would recommend that KW use a complimentary metal (read: non-stainless, but non-reactive with stainless) for the adjustment rings to help reduce the chance of galling and/or ruining the body threads.

[right][post="15462"]<{POST_SNAPBACK}>[/post][/right][/quote]



Believe it or not, the bottom spring perch, the lock ring & the spring seperator are made of what looks like a reinforced plastic material, probably glass filled nylon but that is a guess. They are nicely coloured as well, the top perch on the rear shock is purple annodised alloy, the plastic perches are a similar purple colour to complement the yellow springs. I'll be in work tomorrow, if I get a chance I'll take a photo of them in the box and post it so you can see for yourselves.
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#9

EH Huh,

Don't forget the RS Barn Club Sport LEDA double adjustable suspension. The perfect package for street/track @$2195 complete

LEDA Stainless body double adjustable struts and shocks with Hypercoil springs offer a great upgrade over original MO30 package.

Designed to be a direct bolt on with great adjustability. Doesn't require torsion bar allignment (8hrs)

Can be upgraded to strictly track set up with only spring changes.

Pete
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#10

Photo as promised.
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#11

colin - on the rears:



do they make them with spherical ends on the rear? can't use rubber bushings as stand alone rear suspension, so for those of us who want to lose the torsion bars, we're screwed



also, do they make them with offset upper mounts? both the kla and the konis do that to clear the car, because without it, the springs make contact and make a racket
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#12

A bunch of the guys on the UK forum run the KWs so you might want to post over there for a quicker response.
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#13

no rush



i'm really happy with my carreras that kla valved, and since i need the spherical bearings at the mounts, because i have no torsion bars, i am pretty much where i am without going to leda, or moton or something like that, but if they can provide a bearing mount instead of a rubber bushing mount, they would be an option too



anyway, i just thought it odd that the standard provisions for interferences aren't there - i am wondering if the spring is smaller or something like that, so it isn't needed



also, i am not seeing any adjustment knobs - are there any?
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#14

Not sure about Colin's specials but the variant 3 can be seen HERE Apparently a bit of a bitch to adjust the rebound on the rears for our cars.
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#15

cool - thanks



at less than 1300 for the whole setup, the konis and carreras were a popular and inexpensive way to get there on a street car, so i did it - of course, i'm always looking for improvement - i'll look into how it differs from the koni and carrera and whether or not i should switch - better justifies increased cost - i have no problem with that - just not sure i can do better on a street car than what i already have



something i just noticed - i think i'd dump the set screw, and go with a locking ring



they sure are pretty though, and look like plug and play
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#16

!!! cant wait to try them, please test them on the softer settings to tell how they are for the street....
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#17

The standard KWs work fine on the street but I doubt Colins will be too gentle. <img src="/forum/images/smilies/968/smile.gif" class="smilie" alt="" /> If the UK guys can handle it on the roads over there they should be fine in N.America
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#18

Hi Flash,



My own preference is to retain the torsion bars as the top damper mounting is just not strong enough in standard form to support the weight of the car, but I discussed your concerns at length with KW and they have assured me that they are willing to make the rear shocks with spherical bearings if asked, even as a one-off in necessary.



The adjusters are awkward to access, you will note that the rear shock has an offset lower mounting to get to the screw. I dare say that the upper mounting could be similarly offset if required for clearance, but you will note the tall top perch which lowers the spring away from the clearance problem.



I'll take some photos of our car on the ramp with them fitted so you can see for yourself.



As Mark said, ours are definitely going to be focussed for track use but we do intend to play with spring rates & ARBs to reach an acceptable compromise between road and wet/dry track settings. Mind you the poor car does have 400bhp to contend with, so yes, it will probably be harder than stock!
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#19

cool



yeah - the 2.5" springs bang into things, and consequently carrera and koni offset the upper mount - are the kw springs a different diameter?



access to the adjusters is rather big thing for me - i have different settings for daily use (translation - girlfriend in the car) versus performance use



so - what's the package going for? does it come with a bottle of window cleaner or chrome polish?
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#20

Hi Folks

I thought ide chip in with my 2pth...

Ive been running the V3 KW,s on my 944S2 [ its basically a 968 ],for about 12 months.

The car is used mainly on track . It has M030 ARB,s + poly bushes allround...+ the KLA drop links at the rear...

Personally i find it GREAT for duel purpose track / road use. On the softest setting , its not too much of a harsh ride,, just acceptable..But then our roads ARE rougher than your USA roads....

It EASY to adjust the bump + rebound on the fronts , + the bump on the rears.. BUT the rebound on the rears is a pig to get too ....

Ive got the standard springs fitted "at present" BUT ive just taken delivery of some + 20Nmm stiffer springs which will be fitted SOON...Also with some Dynatec [ front ] top mounts....So its getting a little hardcore...!!!!!!!!!!!!!!!!!!



ALL the springs are 60mm diameter , which helps greatly when it comes to clearance issues. Like it doesnt contact any of the underneath ....So no noise....

Regarding the torsions, The KW,s are designed to work in conjunction with them BUT on my car i had to re-index.. Not a hard job , just time consuming.....



My car NOW has 245bhp after a full racing re-build + re-map, so not quite as powerfull as yours Mark / Colin , But itl still keep up with you in the twisty bits......Tee Hee, Tee Hee...



Heres looking forward to this seasons track days.....Bring it on....!!!!!!!!!!!
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