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  #37  
Old 09-07-2010, 08:40 AM
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Re: K-Sport Coilovers are INSTALLED!

if they are stiffer than the Bwoodys...then no thanks for me
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  #38  
Old 09-07-2010, 08:43 AM
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Re: K-Sport Coilovers are INSTALLED!

good deal chad. enjoy your vaca.........
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  #39  
Old 09-07-2010, 08:57 AM
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Re: K-Sport Coilovers are INSTALLED!

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if they are stiffer than the Bwoodys...then no thanks for me
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  #40  
Old 09-07-2010, 10:17 PM
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Re: K-Sport Coilovers are INSTALLED!

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Originally Posted by burntPiston View Post
+1 - I agree I'm as slammed/stiff as I could go. If it is possible to get a more comfortable ride at the same height as the bwoodys w/o losing the performance id be down.

Does stiffness automatically equate to performance or is it more of a travel/spring rate kinda deal? So theoretically it could absorb bumps better and keep the center of gravity the same as the bwoodys while not feeling as stiff persay? I just cant do rougher than the bwoodys lol


Im not up on my suspension performance stats, someone care to enlighten me in english thanks lol
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  #41  
Old 09-07-2010, 10:48 PM
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Re: K-Sport Coilovers are INSTALLED!

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Originally Posted by soontobesrt View Post
+1 - I agree I'm as slammed/stiff as I could go. If it is possible to get a more comfortable ride at the same height as the bwoodys w/o losing the performance id be down.

Does stiffness automatically equate to performance or is it more of a travel/spring rate kinda deal? So theoretically it could absorb bumps better and keep the center of gravity the same as the bwoodys while not feeling as stiff persay? I just cant do rougher than the bwoodys lol


Im not up on my suspension performance stats, someone care to enlighten me in english thanks lol
If only there was a simple answer to this!

Unfortunately, there's simply no "one size fits all solution" to suspension setup.

What may work well on a smooth race track will seldom work as well on real roads.

For most of us, a compromise between minimising body roll, ride quality, and wheel control is most important.

So many different factors come into getting that good compromise. After all, stiff and low is not neccesarily the ultimate for a circuit..... geometry changes through the suspension's travel, roll centre height, even wheel/tire weight come into tuning for the circuit. All of these factors differ with different vehicles.

Springs: For the street, as nearly all of us are confined to, is a balance of obtaining the right "look" (height), while trying to keep a good balance of wheel travel and spring stiffness for bump absorbency.
Shocks: Again for the street, we need to find a reasonable balance between stiff valving to minimise body and control wheel movement, and soft to smoothly absorb road shocks for a comfy ride.....

None of this is easy, and this is why the "perfect car" has not yet been invented
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  #42  
Old 09-07-2010, 11:53 PM
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Quote:
Originally Posted by soontobesrt View Post
+1 - I agree I'm as slammed/stiff as I could go. If it is possible to get a more comfortable ride at the same height as the bwoodys w/o losing the performance id be down.

Does stiffness automatically equate to performance or is it more of a travel/spring rate kinda deal? So theoretically it could absorb bumps better and keep the center of gravity the same as the bwoodys while not feeling as stiff persay? I just cant do rougher than the bwoodys lol


Im not up on my suspension performance stats, someone care to enlighten me in english thanks lol
When it comes to outright suspension performance, then ultimately stiffness does matter. Having been in the import scene before these trucks, a lot of them are very mild and cushy IMO. It has to do with rebound and dampening, spring rate and how it all ties together. Of course an extremely tight suspension is going to outperform a softer counterpart. My rears are good as far as stiffness goes, but the fronts need to be dripped and tightened up a lil bit.


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  #43  
Old 09-07-2010, 11:58 PM
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Quote:
Originally Posted by Marlin View Post
None of this is easy, and this is why the "perfect car" has not yet been invented
I think the closest they have came to perfect for "most" people would be the magnetic ride control that uses a computer and metallic particles to soften or stiffen the suspension very quickly.


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  #44  
Old 09-08-2010, 12:57 AM
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Re: K-Sport Coilovers are INSTALLED!

Quote:
Originally Posted by philthyphil View Post
I think the closest they have came to perfect for "most" people would be the magnetic ride control that uses a computer and metallic particles to soften or stiffen the suspension very quickly.


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what uses that? Im curious what's the setup on most Lambos/Ferraris? How about the Bugatti Veyron. Suspension is often overlooked on those beast just due to the sheer brilliance of the motor/interior/looks and that price tag lol!

I just never looked into em much, anyone know specifically what technologies they use, Im sure its no standard coil-over setup lol, I could google but im lazy right now lol
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  #45  
Old 09-08-2010, 01:04 AM
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Re: K-Sport Coilovers are INSTALLED!

Quote:
Originally Posted by soontobesrt View Post
what uses that? Im curious what's the setup on most Lambos/Ferraris? How about the Bugatti Veyron. Suspension is often overlooked on those beast just due to the sheer brilliance of the motor/interior/looks and that price tag lol!

I just never looked into em much, anyone know specifically what technologies they use, Im sure its no standard coil-over setup lol, I could google but im lazy right now lol
Wiki - A magnetorheological fluid (MR fluid) is a type of smart fluid in a carrier fluid, usually a type of oil. When subjected to a magnetic field, the fluid greatly increases its apparent viscosity, to the point of becoming a viscoelastic solid. Importantly, the yield stress of the fluid when in its active ("on") state can be controlled very accurately by varying the magnetic field intensity. The upshot of which is that the fluid's ability to transmit force can be controlled with an electromagnet, which gives rise to its many possible control-based applications.

So, what MRC does basically is this; In a steady state, the shock absorber fluid is of thinner viscosity, creating less resistence to flow, allowing a "softer ride".
When the computer senses a stiffer shock absorber is required (from input from shock shaft travel sensors, throttle sensor, yaw sensor etc), it sends an electric charge to the fluid within the shock, which aligns the minute particles within it, altering the fluid's characteristics to be more viscous, thereby creating a "stiffer" shock absorber.
This can be varied within the minimum and maximum parameters to infinity.

Hope that helps

I've driven a couple of vehicles such equiped, and the effect is quite amazing. Lord help you though when it all turns to shit in a few years and the shocks need replacing!
If memory serves me correctly Bosch pioneered the technology.
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  #46  
Old 09-08-2010, 01:52 AM
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I know they use that technology on the new cts-v...
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  #47  
Old 09-08-2010, 07:03 AM
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Re: K-Sport Coilovers are INSTALLED!

Ksport Coilover Installation Instructions For Jeep Grand Cherokee SRT-8



The Jeep Grand Cherokee coilover requires the relocation and removal of additional OEM suspension components in the rear of the vehicle. After following OEM procedures for removal of the rear shock, and rear spring please follow these instructions for removal of additional components, as well as installation of your Ksport coilovers.

Firstly, we need to remove the OEM bump-stop. Firmly grip the yellow bump stop in your hand and pull downward. Set the bump stop aside, as you will need it later.

Next you will need to remove the bump stop holder, which is bolted to the vehicle. Use a ratchet/socket with an extension to remove this bolt. You will NOT need these parts for installation of your Ksport coilovers.

Now, you will need to install the Ksport Hi-Lo Kit on the rear trailing arm. This is how the ride height of the rear will be adjusted. Set both Hi-Lo Kits to the same setting, and use the spanner wrenches to lock the collars against each other. Place the Ksport Hi-Lo Kit over the OEM spring seat, and then insert the OEM bump stop into the Ksport Hi-Lo Kit. Next, install the Ksport rear spring onto the Hi-Lo Kit. (Fig. 1)



Once the ride height is set, you will need to set the shock stroke. To do this, you will need to load the vehicle suspension. This can be done by supporting the vehicles weight with the rear trailing arm or rear axle, or any other method that places full load on the suspension. Please follow all safety procedures and exercise caution when determining where to place the jack(s) and jack stands.

Once the suspension is loaded, you can adjust the shock absorber stroke by adjusting the posting of the adjustable lower mount. To properly set shock stroke, you need to compress 1/3rd of the shock shaft inside of the shock body, leaving 2/3rds of the shaft length exposed.

After setting shock stroke, you can reinstall the wheel and test drive the vehicle. Please check all nuts/bolts for tightness as well as the locking collars.
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  #48  
Old 09-10-2010, 12:39 AM
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Re: K-Sport Coilovers are INSTALLED!

Quote:
Originally Posted by soontobesrt View Post
+1 - I agree I'm as slammed/stiff as I could go. If it is possible to get a more comfortable ride at the same height as the bwoodys w/o losing the performance id be down.

Does stiffness automatically equate to performance or is it more of a travel/spring rate kinda deal? So theoretically it could absorb bumps better and keep the center of gravity the same as the bwoodys while not feeling as stiff persay? I just cant do rougher than the bwoodys lol


Im not up on my suspension performance stats, someone care to enlighten me in english thanks lol
Just throwing my .02 Cents in here

As a few have said, there is virtually no "perfect" set up but in regards to your question of stiffness=performance? Yes, directly, according to every Viagra commercial but in the real world it comes down to controlling vehicle movement and unsprung weight. Unsprung weight is all the parts of the car that are "below" the spring. for example, your rear axle and wheels/tires are unsprung as they (theoretically) never leave the ground,they ride along it's contours. If you are on a rough road with weak springs/shocks, the unsprung items can lose contact with the ground as the body of the vehicle (sprung weight) stays still and the axle/wheels/tires bounce up and down. If you've ever driven behind somebody with badly worn out shocks you can see the different effects. Undulating bumps cause the body to bounce up and down constantly. Sharper, closer bumps will cause the tires to bounce and the body to stay still.

SO, the easy answer is to put stronger springs in. BUT if you put in stronger(stiffer) springs in without upgrading the shocks, you get a more pronounced effect of bouncing unsprung weight. It will help control body roll in a cornor but you run a risk of losing surface contact on sharper bumps. SO, stiffer shocks go in and now you have a great handling vehicle, right? Maybe.
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