New bilisien shock squeek - Chevy Impala SS Forum
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post #1 of 16 (permalink) Old 02-13-2016, 01:22 PM Thread Starter
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New bilisien shock squeek

I put them on about 50 miles ago and they squeak and chirp like no bodies business. What can be done about it?

BH tuning, Transgo shift kit, Eaton posi W/ 3:73 gears, EDGE 9.5" 3000 stall , BMR rear lower control arms. BMR front and rear sway bars Hotchkis springs, CIA trans crossmember; 1.6 Pro magmuim RR; CIA budget headers w/ high flow cats; 2 1/2" cat back with X pipe; chrome dual cone CAI, 52mm throttle body, 30lb SVO injectors, Wilwood brake calipers, Power Stop drilled and slotted brake rotors, Bilstein shocks. Gary's 2 relay headlight harness. Gary's battery relocation harness
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post #2 of 16 (permalink) Old 02-14-2016, 12:03 AM
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can you tell if its coming from front or rear?

94 BBB SS
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post #3 of 16 (permalink) Old 02-14-2016, 05:10 AM Thread Starter
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Quote:
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can you tell if its coming from front or rear?
From the front

BH tuning, Transgo shift kit, Eaton posi W/ 3:73 gears, EDGE 9.5" 3000 stall , BMR rear lower control arms. BMR front and rear sway bars Hotchkis springs, CIA trans crossmember; 1.6 Pro magmuim RR; CIA budget headers w/ high flow cats; 2 1/2" cat back with X pipe; chrome dual cone CAI, 52mm throttle body, 30lb SVO injectors, Wilwood brake calipers, Power Stop drilled and slotted brake rotors, Bilstein shocks. Gary's 2 relay headlight harness. Gary's battery relocation harness
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post #4 of 16 (permalink) Old 02-14-2016, 05:48 AM
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In the past, we've seen the shock body rub on the hole in the frame--either the shock isn't properly centered in the upper frame hole, or there needs to be some minor clearancing done on the actual frame stamping at the top of the spring pocket.

If you can tell which side the noise is coming from, drop that front shock out and look for signs of rubbing on the shock tube--that will pinpoint the area of contact with the frame.

Are the Bilstein shocks new? They come with interlocking upper (top & bottom on shock shaft) insulators designed to keep the shock centered in the upper mounting hole on the frame. If the shocks were swapped from another vehicle, or if the insulators are not those supplied with the shock(s) by Bilstein, I'm thinking that could be what's allowing the shock to be off-center in the upper mount position.

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post #5 of 16 (permalink) Old 02-14-2016, 09:30 AM
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Ive heard that too much torque on the top nut could make the bushings noisy

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post #6 of 16 (permalink) Old 02-14-2016, 11:00 AM
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Quote:
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... interlocking upper (top & bottom on shock shaft) insulators designed to keep the shock centered in the upper mounting hole on the frame. ....
Yepper. Getting the nibs on the upper bushings to seat properly in the hole is critical in assuring the shaft does not come in direct contact with the metal frame and create the perfect squeak-maker.

Another thought is that whenever upgrading one part (especially a big performance gainer as Bilsteins) it tends to show up other weak spots like perhaps a nearby loose body or motor part.

\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!
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post #7 of 16 (permalink) Old 02-14-2016, 01:32 PM Thread Starter
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Quote:
Originally Posted by Navy Lifer View Post
In the past, we've seen the shock body rub on the hole in the frame--either the shock isn't properly centered in the upper frame hole, or there needs to be some minor clearancing done on the actual frame stamping at the top of the spring pocket.

If you can tell which side the noise is coming from, drop that front shock out and look for signs of rubbing on the shock tube--that will pinpoint the area of contact with the frame.

Are the Bilstein shocks new? They come with interlocking upper (top & bottom on shock shaft) insulators designed to keep the shock centered in the upper mounting hole on the frame. If the shocks were swapped from another vehicle, or if the insulators are not those supplied with the shock(s) by Bilstein, I'm thinking that could be what's allowing the shock to be off-center in the upper mount position.
Thanks man I will check it out next weekend. Right now headed out the door for Tulsa. And yes the shocks are brand new

BH tuning, Transgo shift kit, Eaton posi W/ 3:73 gears, EDGE 9.5" 3000 stall , BMR rear lower control arms. BMR front and rear sway bars Hotchkis springs, CIA trans crossmember; 1.6 Pro magmuim RR; CIA budget headers w/ high flow cats; 2 1/2" cat back with X pipe; chrome dual cone CAI, 52mm throttle body, 30lb SVO injectors, Wilwood brake calipers, Power Stop drilled and slotted brake rotors, Bilstein shocks. Gary's 2 relay headlight harness. Gary's battery relocation harness
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post #8 of 16 (permalink) Old 02-25-2016, 08:26 PM Thread Starter
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Well I was out of town a bit longer that I wanted, but I am going to see if I can find the problem tomorrow. I have 1 question. The new shocks came with 2 washers, one is bigger in diameter that the other so which one should be mounted on top?

BH tuning, Transgo shift kit, Eaton posi W/ 3:73 gears, EDGE 9.5" 3000 stall , BMR rear lower control arms. BMR front and rear sway bars Hotchkis springs, CIA trans crossmember; 1.6 Pro magmuim RR; CIA budget headers w/ high flow cats; 2 1/2" cat back with X pipe; chrome dual cone CAI, 52mm throttle body, 30lb SVO injectors, Wilwood brake calipers, Power Stop drilled and slotted brake rotors, Bilstein shocks. Gary's 2 relay headlight harness. Gary's battery relocation harness
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post #9 of 16 (permalink) Old 02-26-2016, 07:07 AM
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You can get installation instructions here:

https://www.facebook.com/notes/bilst.../385128978281/

Lacking clear distinction in the instructions then I use the following guidelines for the bottom one comparing the two:
harder durometer or
fatter or
bigger nib

For proper torque make sure not to tighten to the point where the grommet/insulator gets squished past the diameter of the metal bushing/washer.

ps - you'll never get a better chance to check all the A-arm bushings as rotted or spongy that might be causing your squeak.
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post #10 of 16 (permalink) Old 02-26-2016, 07:27 AM Thread Starter
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Quote:
Originally Posted by 96 Black View Post
You can get installation instructions here:

https://www.facebook.com/notes/bilst.../385128978281/

Lacking clear distinction in the instructions then I use the following guidelines for the bottom one comparing the two:
harder durometer or
fatter or
bigger nib

For proper torque make sure not to tighten to the point where the grommet/insulator gets squished past the diameter of the metal bushing/washer.

ps - you'll never get a better chance to check all the A-arm bushings as rotted or spongy that might be causing your squeak.
Sorry still not clear so let me ask again---where should the bigger washer be located on top or under? Also the rest of the front end is still fairly new. Thanks

BH tuning, Transgo shift kit, Eaton posi W/ 3:73 gears, EDGE 9.5" 3000 stall , BMR rear lower control arms. BMR front and rear sway bars Hotchkis springs, CIA trans crossmember; 1.6 Pro magmuim RR; CIA budget headers w/ high flow cats; 2 1/2" cat back with X pipe; chrome dual cone CAI, 52mm throttle body, 30lb SVO injectors, Wilwood brake calipers, Power Stop drilled and slotted brake rotors, Bilstein shocks. Gary's 2 relay headlight harness. Gary's battery relocation harness
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