KSport Coilovers: All About 'Em

[whitespyder]

Insite-

so far from what you have experienced, how are they? Have you driven a boxster with pss9? if so, how do they compare?

[insite]

Originally Posted by whitespyder

Insite-

so far from what you have experienced, how are they? Have you driven a boxster with pss9? if so, how do they compare?

to give them a fair shake, i have to get them dialed in first. i will have a chance next thursday to compare my car w/ ksports side by side with a 987 on PSS9's.

i pulled my rear struts today to re-set the top mounts; when i put it on the alignment rack yesterday, my MAX rear camber was -1.3 and my MIN front was -1.8; clearly i made a bad guess!

tomorrow i will pull the fronts & reset their top mounts. i may be able to vary the weight balance on the car a bit w/ ride height to minimize the harmonic issue.

once i have the ride heights and alignment in good shape, i'll continue my testing for a few more days on the street. after the track next thursday, i'll post my thoughts.

[RandallNeighbour]

Insite, do post the ideal positions of the tops of the struts as well so I can preset them before giving them to my mechanic for installation. Thanks!

[insite]

i'm doing an engineering analysis of the ksport dampers here: http://986forum.com/forums/performance-technical-chat/18178-evaluating-designing-suspension-ksport-examined-post159952.html#post159952

there are dyno plots, evaluations of the dyno results, and discussion on damper settings here. feel free to ask lots of questions and get very technical!

[insite]

the drawing below shows the two settings i tried on the front camber plates. the setting on the left is 2/5 of the way between center and the next largest hash mark. the setting on the right is dead center.

the camber range available to me using the FACTORY adjusters with the ksports set as shown are:

Left Drawing
Min Camber = -1.1 deg
Max Camber = -1.9 deg

Right Drawing
Min Camber = -1.8 deg
Max Camber = -2.5 deg

since i track my car, i have set front camber to -1.6. for a street car, i recommend a setting between -0.8 and -1.2. unless you need more than -1.7deg camber up front, leave the KSport camber plates exactly in the middle (factory setting).

[insite]

usually, lowering the boxster makes it difficult to set proper camber in back and still get a good toe setting. because of this, lowered boxsters usually suffer from excessive rear camber. this is frequently corrected with aftermarket toe links.

ksport tried to provide a remedy for this. i THOUGHT i needed to use the 'less camber' setting (shown on right below) to dial some camber out. i was wrong; either by design or by accident, the center setting is pretty much perfect. i was able to get my toe in spec with as little as -1.5deg camber in back.

here are the camber ranges i could set at the concentrics on the control arms with the KSport plates in the positions shown.

Left Drawing
Min Camber = -1.1 deg
Max Camber = -2.2 deg

Right Drawing
Min Camber = -0.6 deg
Max Camber = -1.3 deg

for street cars and light track duty cars, use the center (left drawing) setting. if your car is strictly track & you use R-Comps and want more than -2.2deg camber in back, then use the third setting that is not shown (slid all the way up in the drawing).

[insite]

on another note, i think i have found the 'trick' setup for my car. i was having harmonic issues between the front and rear because of ride frequency interference. i decided to try and correct this a bit by running the rear ride height a little higher than the front. currently, my front ride height (measured to the fender) is 25.00" and my rear ride height is 25.50".

this seams to have calmed the bounciness a bit. also, i set the dampers to my 'calculated' settings (24 up front, 27 in back) and got it aligned properly. it feels pretty comfortable.

i haven't had a chance to get aggressive with it yet in this configuration; i'll leave that to tomorrow.......

countdown to track day: T minus 6. weather outlook? 82 and sunny.

[Boxsterund914]

Thanks for the additional information you have posted.

What is your conclusion about spring rates and settings? Or are you at a final conclusion yet? I am seriously considering ordering these and want to get it "spot on" the first time.

I am looking for a great street performance and occasional ax setup.