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YOUR RESEARCHKW variant3 & GT3 sways
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Install gt3 suspension
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You posted in the thread where I installed the gt3 suspension on this car, that's where most of my useful information is...
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Suggestion · Original poster
I haven't taken the wheels off yet to check throughly, but when the car was on a lift, I noticed non-adjustable sways with OEM-style ( atleast, most likely OEM ) droplinks.
Leading evidence: 'Install gt3 suspension' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check throughly' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed · Original poster
Final installed set-up differs slightly from the topic:
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Especially since my new short DLs were installed yesterday!
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Performed · outcome unconfirmed · Original poster
Things changed when I eventually got a C2 with allready upgraded suspension.
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Performed · outcome unconfirmed · Original poster
And KW's meant for a C2 do work also with GT3/2 wheel carriers, this info I got from a local source who used similar combination.
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Check throughly
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Suggestion · Original poster
I haven't taken the wheels off yet to check throughly, but when the car was on a lift, I noticed non-adjustable sways with OEM-style ( atleast, most likely OEM ) droplinks.
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Suggestion
In corners where you are also heavily loading the sway bar, the short link tends to cause suspension geometry changes by pushing/pulling on the respective wheel (which may affect both camber and toe) AND contribute to significant wheel lift as well.
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OK, I did the search, but didn't find anything exact. So is here anyone who's using such a combination, and if yes, which droplinks do you use?
Factory std of some kind, there seems to be many different, or aftermarket ones?
The car I bought has KW's, was originally equipped with ROW M030, so I expect to find those sways still. I haven't taken the wheels off yet to check throughly, but when the car was on a lift, I noticed non-adjustable sways with OEM-style ( atleast, most likely OEM ) droplinks.
Will KW's work with GT3 strut top ( front ) mounts, I have those waiting for installation too.
TIA, Pete
IIRC, installing the KW is the same as any other aftermarket suspsension - so you will still use the factory mounting point for normal sway bar applications. However, the GT3 bar is NOT a bolt on for our cars since we have different wheel carriers. You
cannot
use the factory drop link mounting location (below spring perch). The typical solution is to use shorter drop links and attach them to the wheel carrier pinch bolt. This has its own issues, and I would not recommend it.
There are 2 solutions: 1, use HR front ARB - which uses the factory drop links. 2, get the NEW Tarret drop links. (I don't think they are listed in the product page yet, so call Ira and ask for them.
-td
Oh yeah, there's one thing I forgot to mention...I also have GT2 ( or 3, same part ) wheel carriers, which I'm going to install with 6-piston calipers and 350mm discs. How's this going to change things up front, and are there no problems at rear?
You're going to have to get a real guru in on this. I think you might actually need the GT3 version of the KW if you have GT3 wheel carriers. Also, you should be able to use factory drop links if you have the upgraded carriers.
FWIW, why are you putting on the huge front brakes?
-td
This was something I was afraid of...droplink part is OK, but I think I'll send an e-mail to KW about this. OTH I also have Cup car adjustable coilovers too...
Because I can....and had them already on my 951.
The tarret and many other aftermarket drop links mount at the pinch bolt in the front. Otherwise you will need to buy a mounting bracket to attach to the front and rear shock. This is a threaded mount/bracket for the drop link. I purchased mine from Arlan motorsport, which also sells drop links if you want. The KWs may or may not have the mounts included.
http://www.arlanmotorsport.com/motor.../ams/index.asp
I don't know if the GT3 strut mounts will work. You posted in the thread where I installed the gt3 suspension on this car, that's where most of my useful information is...
https://rennlist.com/forums/996-foru...on-996-c2.html
Oh yes, I've forgot that. That was when my plan was to buy a std C4. Things changed when I eventually got a C2 with allready upgraded suspension. Thanks!
Pete
The short links attach to the pinch bolts which will load the sway bar simply by turning the steering wheel. You can test this yourself by lifting your front end, disconnecting one side of your sway bar, and then turning the steering wheel. The sway bar will be loaded simply by turning the wheel - and typically, turning the wheel has no effect on the sway bar at all.
In corners where you are also heavily loading the sway bar, the short link tends to cause suspension geometry changes by pushing/pulling on the respective wheel (which may affect both camber and toe) AND contribute to significant wheel lift as well. As you can see in the pics below, I am getting something like 4" of wheel lift with the short link setup - which could not be dialed out. After switching the links, I can keep all 4 wheels on the ground (most of the time
)
Your mileage may vary and your tech guru may think differently, so take it for what it's worth - more internet gibberish. But in my experience, the short drop links are putting a square peg in a round hole so the GT3 bar can work.
-td
A slight update to this issue. I might have gotten out of the problem because of those GT3/2 wheel carriers. With those I can use std ( or aftermarket adjustable ) long GT3 droplinks, of course with appropriate brackets. And KW's meant for a C2 do work also with GT3/2 wheel carriers, this info I got from a local source who used similar combination.
I switched to HR front ARB with stock drop links. You should check with Ira at Tarett, as he has a SWEET setup now with the GT3 sways!!
Thanks! All Ruf parts
-td
Does anyone have any other e-mail adress to Arlan Motorsport than info@arlan....
I've tried to contact them for few days without success, and I really need those sway bar mounts pictured earlier in this thread!
Answer to myself:
Hello Petri,
Thank you for your interest in the Arlan Motorsport products.
We have just sold our motorsports parts business and it is now operating under �Chase This Motorsports� in Chicago, IL USA
To obtain the part you requested please contact Chase Kaplan at
[email removed]
and he will be able to assist you with providing this part. You may reach him by telephone at: [phone removed] (US Central Standard Time).
Best Regards,
Dave
Dave Bottom
Arlan Motorsport
3442-C Empresa Drive
San Luis Obispo, CA 93401
TD -
In your comment above, are you including the Tarett drop links in that? Or are you referencing "stock" short DLs? I'm assuming that the Tarett DLs isolate the load from steering angle, right?
Thanks - you're a veritable fountain of suspension tuning knowledge!
Yes. Tarret, AP, etc. Stock drop links are actually long. Maybe 1.25-1.5X the length of the "normal" aftermarket links used with GT3 sway bars. These mount to the pinch bolt. Notice how short the links are in the second picture.
LinkLocation.jpg
2.JPG
Tarret now offers a modified link with a shock collar that resolves the geometry issue. As you can see below, they use a modified collar and longer links. Although these are not listed on Tarett's website yet, they are being distributed to the Spec Boxster folks and are spec boxster legal. Since the Boxster and 996 have the same front ends, they work for our cars as well. Also, as Fission mentioned, Arlan also has a shock mounted support. I believe he has had great success with them.
Tarret_Collar.jpg
-td
Okay - compelling. Especially since my new short DLs were installed yesterday! I talked to Ira and the new links (pictured) with the shock-mounted bracket are on their way! He's a great guy - will credit me once I send the other links back to him. Also, my shop has agreed to do the swap at a reduced rate - which is way, way cool because this is such a big deal.
Shameless plug for Tarett Engineering:
Tarett Engineering
Another shameless plug for German Motor Werks in Asheville, NC:
German Motor Werks - Asheville, NC
As long as I'm going to all this extra trouble, makes sense to do it right.
Very nice! Final product looks great and should work awesome together! Drop some GT3 Euro seats and a roll bar and you should be a track monster
What drop links did you end up with?
In the future, if you have brake cooling issues, you might consider adding GT3 brake ducts, as well internal air scoops.
-td
Thanks, I tried to use OEM parts as much as possible. The cas has now sports seats ( feels reasonably good also at track ), and I must keep the back seat for occasional child transportation.
Drop links are OEM GT3, brackets from Arlan Motorsports ( nowadays Chase this motorsport ).
Brake cooling will be upgraded for next track season.
Pete
