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 Old 11-06-2010, 05:53 PM   #1
 
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Default Front Suspension/Control Arms

I am a total suspension noob and I will admit that up front. I got Tein Flex coilovers from 949racing... in the process of taking everything apart both lower ball joints and tie rod ends needed replaced- so I got those in and swapped em out today. Everything is back together, about to put in the front coilovers (rears are in already)... but something seems wrong with my front suspension/control arms. The left side vs right side is very different in its 'stiffness' or whatever, im not sure what's wrong or which is wrong but something doesn't seem right if they are vastly different.

Let me try to better explain.. (I have a video too). Left side, you push down or lift up on the hub, it moves up and down relatively easy and bounces back into place. Right side... you can't press it down any further than it sits by itself, and its very hard to lift up, so much so that the car lifts off the jack stands a little when I finally apply enough pressure for it to move up (which is what you're hearing in the video).

It's linked to the lower control arm as far as I can tell, because during the whole ball joint replacement, at one point I had the upper arms disconnected and it still had this difference.

Basically: which side is fucked up, what is causing it, what can I do about it? In the video I look at left side first, then right side.

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 Old 11-06-2010, 06:05 PM   #2
 
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the dreaded 'floppy wheel'
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 Old 11-06-2010, 06:11 PM   #3
 
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obvious thing here is the bushings on the control arms, mainly the lower...but idk they all look the same to me

bushings all look the same/fine as far as I can tell...The tight side is almost feels like there is something constantly applying downward force on the lower arm (best way I can describe it). don't know if that's normal...is indicative of anything, etc, again I am suspension noob.

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 Old 11-06-2010, 06:19 PM   #4
 
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im so tired of dealing with suspension BS.. I just wanna throw these coilovers on. I just wanna figure out if this is actual issue... don't wanna be tearing it down later down the road etc obviously
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 Old 11-06-2010, 06:34 PM   #5
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most possible thing dude... the bushing on the a arms... its the only thing that is actually moving vs a sedentary object... its the only place where resistance would be left...

once u take the coils out its just a dead arm and it will move as easily as the bushings will allow....

get a floor jack with a wooden block and raise and lower both arms and inspect the bushings at all range of travel......

u cant assume that the loose one is bad...or good... anymore than u can assume the tight one is good or bad....


also would have been nice to check each lower and upper a arm before you assembled the hub back on.... this way u can compare 4 different reference points rather than just 2

if still possible... i would check the travel vs resistance of all 4 a arms separately without the upper and lower being tied in via the hub
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 Old 11-06-2010, 06:35 PM   #6
 
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definitely lower control arm is the difference. but seriously im not fucking taking those balljoints off again lol. I still spent a few hours on it today with the BFH. Funny thing though... I was only able to get the tie rods off..was stuck on lower ball joints... that "bodies" by drowning pool song came on and I got them both off within the duration of the song lol.
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 Old 11-06-2010, 07:13 PM   #7
 
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It seems as though the lower ball joint on the right side is binding for some reason. Suspension should move relatively freely when there is no spring and damper installed with the exception of the bushing as lenny stated. Is the right side ball joint cocked in an odd way compared to the left side? As much as you don't want to revisit it take apart the right side until you get to the point that everything moves freely.
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 Old 11-06-2010, 08:34 PM   #8
 
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Well, i sprayed the various bushing areas with a little WD40 and then jacked up both sides, to let each side go thru its full range of motion. I dont know what was causing the right side to bind, but after I did that...its fine now..weird but im happy
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 Old 11-07-2010, 06:30 AM   #9
 
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lets see some sweet pics of that car now sitting low....
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 Old 11-07-2010, 06:41 AM   #10
 
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Are the bushing rubber or polyurethane? If they are polyurethane you are going to want to coat them in some lithium grease otherwise they will squeak every time you go over a bump.
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 Old 11-07-2010, 08:29 AM   #11
 
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rubber...factory stuff. down the road it may be smart to switch to poly or something, but not something I want to fuck with now.

paul: exhaust should get here next week..car in current state has no exhaust period, lol. Once exhaust/turbo is on, then I'll get it off the jack stands and start playing with the height and pre load of the coilovers





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 Old 11-07-2010, 09:47 AM   #12
 
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Yea if you get serious about tracking the thing you will want to replace all the bushing to improve the response of the car. Some of the bushing may even be ideal to replace with hieme joints.
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 Old 11-07-2010, 10:27 AM   #13
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shitz dope aaron ...............

i also like how u retreated into a cocoon and work on cars by yourself now.... hahahahahah


keep posting pics nukka
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