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Eibach + Koni vs OEM

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Old 03-25-2012 | 10:48 AM
Silverarrow's Avatar
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Default Eibach + Koni vs OEM

Hi!

I have been reading alot regarding lowering kit to our cars. There seem to be alot of different opinions regarding this kits out there. What would be the best combo for daily driving and sometimes on the track?
I have read that the Eibach spring is not as stiff as the OEM, if that is true then upgrade would be a downgrade or am I wrong?
 
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Old 03-25-2012 | 05:44 PM
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Default Re: Eibach + Koni vs OEM

Originally Posted by Silverarrow
Hi!

I have been reading alot regarding lowering kit to our cars. There seem to be alot of different opinions regarding this kits out there. What would be the best combo for daily driving and sometimes on the track?
I have read that the Eibach spring is not as stiff as the OEM, if that is true then upgrade would be a downgrade or am I wrong?
I got both Eibach and Koni. Ride is alot stiffer, but I have the shocks set for as stiff as possible.
 
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Old 03-25-2012 | 05:53 PM
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Default Re: Eibach + Koni vs OEM

I had the standard yellow Koni shocks and liked them. The Eibach's ...... it depends on what's more important to you and you have to be honest. Street manners, Eibachs. Track manners, something else.

Les
 
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Old 03-25-2012 | 06:58 PM
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From: North Plains, OR
Default Re: Eibach + Koni vs OEM

I have the Eibach and Koni's and enjoy them very much.....especially in the last month!!!

Lowering your car will also change your camber to a more negative (inward tilt) and wear the insides of your tires... so you will need a set of adjustable camber arms as the factory camber arms are not adjustable...
in addition your rear sway bar links are a fixed length and will be pressing the sway bar up and limiting the motion of your shocks making the ride stiffer and transmitting more road bumps to your chassis...

Fortunately there is a fix for both of these..... PM or email me....
 
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Old 03-28-2012 | 12:42 PM
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Default Re: Eibach + Koni vs OEM

Thanks for the respons I think I will go with the yellow koni and the KW springs.
 
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Old 03-28-2012 | 01:44 PM
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Default Re: Eibach + Koni vs OEM

The srt6 coupe spring rates are 451 lb/in front and 480 lb/in rear. Rear spring rate is higher due to lower motion ratio of rear suspension (limited has higher difference 285lbs per inch in the front and 354lbs in rear) . Eibachs are 371 lb/in front and 371 lb/in rear. Eibachs are relying on your progressive bumpstops which are increasing your springrates. Your springrates could be something like 1000+ lb/in in corners. I'm running custom setup - XYZ 30-way adjustable shocks (custom bumpstops) and custom springs with 935 lb/in front and 896 lb/in rear. (used with HR swaybars) Sorry for my English, im from Czech Republic..
 
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Old 03-28-2012 | 01:46 PM
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From: MOFN, AL, 70 miles from George
Default Re: Eibach + Koni vs OEM

Friend, please remember that any lowering springs will require you to find/buy adjustable camber arms at the least. Adding adjustable sway bar links is also a very good idea.

Just letting you know!
 
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Old 03-28-2012 | 02:09 PM
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Default Re: Eibach + Koni vs OEM

Originally Posted by maxcichon
Friend, please remember that any lowering springs will require you to find/buy adjustable camber arms at the least. Adding adjustable sway bar links is also a very good idea.

Just letting you know!
Everyone keeps forgetting the front...

The eccentric bolts will only help a few tenths of a degree, but the Kmac kit (at $400) will make the front fully adjustable as well, but it is a PITA to install, I have been told.
 
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Old 03-28-2012 | 02:41 PM
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Default Re: Eibach + Koni vs OEM

Originally Posted by BoilerUpXFire
Everyone keeps forgetting the front...

The eccentric bolts will only help a few tenths of a degree, but the Kmac kit (at $400) will make the front fully adjustable as well, but it is a PITA to install, I have been told.

J.,

you are correct. I guess I am "everybody" too!
 
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Old 03-28-2012 | 03:15 PM
Silverarrow's Avatar
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Default Re: Eibach + Koni vs OEM

The kw springs are rated around 840lb/inch. Is the HR swaybars a good chose of upgrade? If I remember it correctly it is the same diameter as the original.
 
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Old 03-28-2012 | 07:49 PM
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Default Re: Eibach + Koni vs OEM

The HR sway bars are a couple millimeters larger than our stock....
 
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Old 03-31-2012 | 10:33 AM
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Default Re: Eibach + Koni vs OEM

http://docs.kwsuspension.de/eah68627009.pdf , look at page 9, thats the problem which you are solving with your adjustable sway bar links, your swaybar used to hit your chassis and behave like additional spring ... (sorry for my English)
Originally Posted by MikeR
I have the Eibach and Koni's and enjoy them very much.....especially in the last month!!!

Lowering your car will also change your camber to a more negative (inward tilt) and wear the insides of your tires... so you will need a set of adjustable camber arms as the factory camber arms are not adjustable...
in addition your rear sway bar links are a fixed length and will be pressing the sway bar up and limiting the motion of your shocks making the ride stiffer and transmitting more road bumps to your chassis...

Fortunately there is a fix for both of these..... PM or email me....
 
  #13 (permalink)  
Old 04-07-2012 | 03:37 AM
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From: union, nj
Default Re: Eibach + Koni vs OEM

does anyone in here know bout custom shocks.i.e thecompressed is 17.75 and extended is 18.875 .so if i have custom h&r springs to lower 3" all round id need my shock numbers adjusted 3" smaller.i called Monroe and dont see what the problem is in just finding a shock that meets the pin style stud top and loop bushing lower.in a high horse car 4to 5 hundred hp get low and wide and power slide with little counter steer.like any of us would have practiced in the snow with the e brake ,doughnuts or in the rain.i want to lower 3" Without some air ride garbage putting compressors in my ride???if any of you have any ideas ,i dont see why qa1,bilstein,monroe,who makes 80% of all other companies shocks or any of the others wouldnt.you pay 2 grand for a coil over that drops 2".with my camber arms and a good alignment id not be able to find any fault in lowering for bout$400 custom springs,no cutting,and bout $150 a corner on the shocks with H&R sway bars all round.with 500 hp at bout 2600 lbs i dont to be to high with 18 x 9.5 in rear wheels and 18 x 8 in front.i like to run 35 series Yokohamas all season sports for the very high tread life and 160 mph rating,type of tires most awd bmw cars run.but with the wavetrac rear posi i want to grip low with or without slicks and even went to the trouble of retapping the rears to 14mm x 1.5 and using H&R stud conversion,just to give you an idea of the raked stance im attempting to achieve.im currently running b&g springs with smaller shock bumps and srt6 shocks on a ltd v8 chevy and would welcome any feedback.yhanks guys ,out
 
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