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Old 02-21-2006, 10:33 AM
  #16  
Stan.Shaw@Excell.Net
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I had it done 3 years ago, sorry no pictures.
The notes I have include:
"All our bushings are made to order. We use a product called Nylatron, similar to Delrin but a little harder and impregnated with moly for a natural lube"

Contact Dave Knaack at A1Dave@centurytel.net
Suspension Control
3310 W. Oakridge rd
Neenah WI 54956
Old 02-21-2006, 02:31 PM
  #17  
Rehan
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This sound interesting. I've been looking for stiffer lower bushings as the stock is way too soft. Does anyone know if the rubber bushings are the same for all the MY or did it change during the production years?
Old 03-01-2006, 02:20 AM
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Lloyd
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Greg, Good choice on the Leda set up. I am totally satisfied with my Leda adjustable shocks. I worked with Karl at Racer's Edge Knoxville TN. They came up with the spring rate and valving for my car. Make sure you contact a Leda representative to match the spring with the shock. Spring rates will vary with the shock. Recommendations will vary, but go with what the Leda rep tells you and not what you read on this web site. You will be satisfied with the results.
Old 03-01-2006, 03:18 AM
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Rehan
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Originally Posted by Lloyd
Recommendations will vary, but go with what the Leda rep tells you and not what you read on this web site. You will be satisfied with the results.
My experience with Leda Rep. was somewhat different. I listened to them and they said that I needed 525lbs springs at the rear and 600 front. The car was a horror story to drive at the track. Entering a corner with some understeer, about Apex got oversteer, almost lost it. With this setup the car behaved worse than the original springs/shocks.

I recalculated the springs and changed them to 800/525 and is now a joy to drive at the track. 600/400 is ok to as it has the same ratio.
Old 03-01-2006, 04:00 AM
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Louie928
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Originally Posted by SharkSkin
928 Specialists used to have the Ott droplinks, but I can't find them on their site right now. Carl's links look a bit beefier, but only adjust to eliminate preload. What you do with the suspension is a matter of preference. Around here the best roads almost all have at least some bumpy spots, most have enough bumpy curves to be an issue so compliance is key to getting max traction. So for my locale, I would upgrade the shocks first, and if I were altering the balance of the car I would try to compensate with the swaybar stiffness. Too-stiff suspension around here can get you in the weeds quick. If your intent is tracking or running on mostly very smooth roads, you will likely get more bang for your buck with springs & shocks.

It comes down to intended use & preference... not necessarily in that order.
Dave & Greg,
I can make up the drop links for you. DR quit selling them when he introduced his own sway bars.
Old 03-01-2006, 03:15 PM
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mark kibort
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stiffer sway bars are great for the track and the street. they can allow softer spring rates, and will generate less body roll. there are trade offs in any set up. It all depends on what you are looking for.


MK
Old 03-01-2006, 03:24 PM
  #22  
mark kibort
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We have several successful racers running something very different. (more in the 750/450 range. Its very critical to look at the split, as well as the bar settings. Just because you have those values of springs, doesnt mean it will be a "nightmare" for all who try it. in fact, as we have all talked about, it depends on many factors., including driving style, bar settings, weight, alignment and ride hight, tire compound,and track conditions

to name a few. anyone that knows the geometry of a 928 and would recommend a near 90% spring rate front to rear, would be someone I wouldnt ask advice from !

MK

Originally Posted by Rehan
My experience with Leda Rep. was somewhat different. I listened to them and they said that I needed 525lbs springs at the rear and 600 front. The car was a horror story to drive at the track. Entering a corner with some understeer, about Apex got oversteer, almost lost it. With this setup the car behaved worse than the original springs/shocks.

I recalculated the springs and changed them to 800/525 and is now a joy to drive at the track. 600/400 is ok to as it has the same ratio.
Old 03-01-2006, 04:35 PM
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slate blue
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Thanks for all the feedback guys, very informative, my order has been placed for the coilovers and drop links. Louie if I would have know yours were still available I would have given that serious thought. I hope the ones I bought will be O.K. Maybe I will make up some brackets to make them adjustable like yours. Maybe you could sell me the brackets?

As to my spring rate, 600/400, I can still change it but this is a substanstial upgrade over stock right? I would be on the track all that much and around town drivability is important. I am also trying to loose some weight in the car too, so I suppose this in reality increases the spring rate in relative terms. With the spring rate of 600/400 I don't need helper springs, this also saves some $$.

If anybody disagrees with my selection please say so as I could change it. I have found Leda good to deal with. Quite friendly and helpful.

Cheers Greg
Old 03-01-2006, 05:00 PM
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drnick
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hi greg, im running 550 / 350 lb front to rear which isnt far off what you have and its a really good combo imo. im jealous that you will have ledas and im only using bilsteins!
Old 03-01-2006, 06:25 PM
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blau928
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Hi Greg,

I'm running 600/400 with konis, and for a combo car, I think they are great. I have now put the rebound on the Koni at full stiff, and the car sticks very well. It tramlines a bit due to the 285's on the front... Other than that, I am quite happy. It's quite stiff, but not a jaw breaker like a stiffer spring would be. I also have stock swaybars, and DR's swaybar bushings. I like this combo for a combo car. I think if it were a full track car, then I would mess with swaybars etc. I might go to adjustable links, but not yet decided... In process of finishing my SC.

HTH,

Cheers,
Old 01-17-2008, 11:00 PM
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Paul Dortkamp
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I am also from the same part of the world as Greg and have a dedicated track car, which is being upgraded witk a 928 Motorsports suspension package . The current aftermarket poly suspension bushings on the lower front A arms are squeezing toward the rear. Has anyone come across a suplier of say PolyBronze bushings for the 928, the poly seems to be too soft. This is a no compromise track car.

Regards PaulD
Old 01-17-2008, 11:27 PM
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Stan.Shaw@Excell.Net
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I had a set made up a couple years back for my track car, they seem very stiff. I don't know of any issues with them.

I don't sell them. If you want more information, you can email me at Stan@928Racing.net. The vendor I got them from is not a Rennlist sponsor, so I can't post the information here.

Last edited by Stan.Shaw@Excell.Net; 01-18-2008 at 12:08 AM.
Old 01-17-2008, 11:27 PM
  #28  
FlyingDog
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There is a Rennlister with almost no posts who made his own delrin suspension bushings. I asked for dimensions, but he said he trial and error fit them. If you come up with a supplier, please post. I plan on having some Delrin or aluminum bushings made at some point.

If you haven't already bought Carl's kit, send Greg a PM (or call him). From what he told me, he'll have a really nice set of shocks for sale very soon.
Old 01-18-2008, 03:35 AM
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jon928se
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Paul

Noltec (sp?) here in OZ list every single bushing for the 928 - the price may make your eyes water though.
Old 01-18-2008, 05:51 PM
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BC
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Originally Posted by Paul Dortkamp
I am also from the same part of the world as Greg and have a dedicated track car, which is being upgraded witk a 928 Motorsports suspension package . The current aftermarket poly suspension bushings on the lower front A arms are squeezing toward the rear. Has anyone come across a suplier of say PolyBronze bushings for the 928, the poly seems to be too soft. This is a no compromise track car.

Regards PaulD
How are they squeezing towards the rear? The shoulder on the rear of the front lower bushing is towards the front of the car, and the front has the shoulder betwen the arm and the bracket ring.


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