Suspension and Chassis Questions about your suspension? Need chassis advice?

Clunk in front end

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Old Dec 9, 2012 | 05:29 PM
  #1  
Killert's Avatar
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From: Norristown PA
Car: 88 Firebird.
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 9 Bolt, 3.27:1 Diskbrakes
Clunk in front end

I just recently finished my complete over haul on my suspention. Parts included:

UMI K-member
UMI LCAs
34MM sway bar, Moog bushings and endlinks
KYB AGX shocks with KYB shock bumpstops and dust boots
Founders Performance Upper strut mounts
Wonderbar
Quick ratio steering box
Moog inner and outer tierods
UMI tierod adjuster sleeves
Eibach Pro-kit springs - WITHOUT rubber isolators on the top of the springs.

I've only put 1 mile on it for a shake down (Rebuild the drivetrain too) I've found on hitting bumps, like smaller pot holes I have a noticable "Clunk" or "Thud" noise in the front end. I haven't had a chance to get it on jackstands yet. Anyone have ideas on what to check first? As far as I know, Everything is tight.

Last edited by Killert; Dec 9, 2012 at 05:33 PM.
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Old Dec 10, 2012 | 07:43 PM
  #2  
//<86TA>\\'s Avatar
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Clunk in front end

are the shocks fully seated in the strut mounts? you cant always use the factory dust boot if thats what you are using. check that first.
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Old Dec 10, 2012 | 07:57 PM
  #3  
Killert's Avatar
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Joined: Nov 2008
Posts: 473
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From: Norristown PA
Car: 88 Firebird.
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 9 Bolt, 3.27:1 Diskbrakes
Re: Clunk in front end

Yep, Shocks are seated. I'm using the KYB dust boots that KYB recommends

Last edited by Killert; Dec 10, 2012 at 08:19 PM.
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Old Dec 10, 2012 | 07:57 PM
  #4  
88 5.7 Iroc-Z's Avatar
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Joined: Nov 2009
Posts: 415
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From: Pasco, WA
Car: 88 Iroc Z, 00 SS
Engine: 5.7 HSR, 5.7 LS1
Transmission: 700r4, T56
Axle/Gears: 3.23, 3.42
Re: Clunk in front end

shocks and calipers... dont ask how I know about the second one....
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Old Dec 10, 2012 | 08:18 PM
  #5  
Killert's Avatar
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Joined: Nov 2008
Posts: 473
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From: Norristown PA
Car: 88 Firebird.
Engine: 383 HSR
Transmission: 700R4
Axle/Gears: 9 Bolt, 3.27:1 Diskbrakes
Re: Clunk in front end

Calipers are tight. Double checked that today. Shocks are seated and tight in the upper mount and the mounts and the spindle.

I think its the spring shifting in the perch. While jacking the front end I had clunks and creeks from the springs shifting. If thats all it it, I can probably ignore it.
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Old Dec 20, 2012 | 04:53 PM
  #6  
morrow's Avatar
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Joined: Mar 2009
Posts: 865
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From: simi valley, southern cali
Car: 92 Camaro Rs.R
Transmission: wc t-5
Axle/Gears: 3.42
Re: Clunk in front end

upper strut mounts?
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