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loud clunk when going over sharp bumps

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Old Oct 11, 2011 | 12:26 AM
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Default loud clunk when going over sharp bumps
I have a 2000 FRC. I installed JO Shocks and sway bars with stock Z06 springs a month ago and have done one Autocross and one track day. I recently started getting a fairly loud clunk in the front when going over harsh bumps. Is this common with the stiffer springs, shocks and sways or is there something most likely wrong? Could I have a bad shock? How could I tell? I cannot get it to make the same noise in the garage. I can't give it enough shock. I check bolts etc and could not find anything loose. I also check the ball joints and the tire does not have play in the horizontal or vertical plane. Any suggestions?

Mark
Last edited by gsxnut; Oct 11, 2011 at 12:59 AM.
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Old Oct 11, 2011 | 09:56 AM
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Just off the top, I'm thinking you left something lose.
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Old Oct 11, 2011 | 10:47 AM
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tighten up the sways
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Old Oct 11, 2011 | 12:48 PM
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I thought about the sway bars. How do you know if the swaybar links are set correctly? You can rotate the bar to put the end of the bar in different positions. I put it where I think it needs to go and it does not appear to be binding. I tighten all bolts to the recommend torque settings. I will go back and check the tightening on all the bolts. There was not visual indication of something loose.

Mark
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Old Oct 11, 2011 | 02:13 PM
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The sway bars attach to the endlinks so there's really only one way they can go off the top of my head.
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Old Oct 11, 2011 | 03:07 PM
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Bad shock ?
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Old Oct 11, 2011 | 03:24 PM
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Default clunk
another thread had a clunk after sway bar replacement and it was the battery moving around.
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Old Oct 11, 2011 | 03:42 PM
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check to make sure your battery is secured.
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Old Oct 11, 2011 | 11:26 PM
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I checked the battery. I think the sound is coming from the front lower. I will continue to work on it. Thanks for all the good ideas. On the sway bar the bar rotates so depending on how long you make the the adjustable link is where the sway bar sits and at what angle.

Mark
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Old Oct 12, 2011 | 12:24 AM
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use a torque wrench on teh end links.
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Old Oct 16, 2011 | 09:19 PM
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Originally Posted by Kale
use a torque wrench on teh end links.
tighten all the suspension components. The end links did tighten some to the prescribed torque. The noise seems to be gone.

Thanks for the advice.

Mark
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