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SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... #1713118
12/20/14 01:11 PM
12/20/14 01:11 PM
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote Offline OP
pro stock
WyleECoyote  Offline OP
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Tennessee
I installed new leaf springs and as you can surmise by the Subject Line - I'm experiencing squeaky noises. Bumps, backing, turning, etc...

To drowned out the leaf spring squeaky noises, I've thought of putting two styrofoam coolers in the back seat and let them rub together - at least I KNOW how to fix THAT noise.

Any suggestions on how to fix?


Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: WyleECoyote] #1713119
12/20/14 02:01 PM
12/20/14 02:01 PM
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

Any suggestions on how to fix?


www.speedwaymotors.com (a mile from me) has plastic? interliners that would likely stop that. I have not used em but if I had that issue that would be my first plan of attack. As you know clamp the springs out aways from the center bolt with (2) C clamps then unbolt the nut on the special center bolt then undo the clamps evenly. I use a nut cracker on the nut cuz I dont want to snap the bolt as it is special but yours are new springs. Maybe just spraying some WD40 would do it (not sure how long) but it'd sure be way easier than dissassembling


live every 24 hour block of time like it's your last day on earth
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: WyleECoyote] #1713120
12/20/14 02:09 PM
12/20/14 02:09 PM
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Omaha Ne
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TJP Offline
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Omaha Ne
Did you by chance use urethane bushings??? If so they need a special lube. if not The only other thing I can think of would be to loosen and retighten the bushings while the suspension is loaded

Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: TJP] #1713121
12/20/14 03:01 PM
12/20/14 03:01 PM
Joined: May 2005
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Florida
BDW Offline
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Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: BDW] #1713122
12/20/14 03:44 PM
12/20/14 03:44 PM
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote Offline OP
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Quote:

Did you change the hangers too?

https://board.moparts.org/ubbthreads/show...&PHPSESSID=




No, I did not change the hangers. This is on my 72 Imperial. I bought new springs from Spring's N' Things - and just swapped them out. THANKS for the link! I'll get up under there and check for any fresh metal-to-metal marks.


Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: TJP] #1713123
12/20/14 03:49 PM
12/20/14 03:49 PM
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote Offline OP
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Tennessee
Quote:

Did you by chance use urethane bushings??? If so they need a special lube. if not The only other thing I can think of would be to loosen and retighten the bushings while the suspension is loaded




I'll try this as well - loosen and retighten with a load. I did this on jack stands so there wasn't a load during assembly. Thanks!


Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: WyleECoyote] #1713124
12/20/14 10:12 PM
12/20/14 10:12 PM
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Omaha Ne
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TJP Offline
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I've bought at least 50+ pairs of springs from them and NEVER had an issue PERIOD, HMM, keep us posted

Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: WyleECoyote] #1713125
12/21/14 01:59 AM
12/21/14 01:59 AM
Joined: Jul 2008
Posts: 259
Khemi, Stygia
Mebsuta Offline
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Khemi, Stygia
I think on mind I sprayed around under there with some silicon lube.


68 Roadrunner. 383 4-spd. Beat up.
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: Mebsuta] #1713126
12/21/14 10:23 AM
12/21/14 10:23 AM
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IN
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ahy Offline
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IN
Besides the bushings, excess U bolt torque can cause squeaks. Had that problem myself after assembling MP XHD springs.

Required torque is pretty low, 45 ft lb from memory. Too much will bind up the spring and case squeaks. Loosen and re-torque fixed mine.

Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: ahy] #1713127
12/21/14 12:11 PM
12/21/14 12:11 PM
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote Offline OP
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WyleECoyote  Offline OP
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Tennessee
Quote:

Besides the bushings, excess U bolt torque can cause squeaks. Had that problem myself after assembling MP XHD springs.

Required torque is pretty low, 45 ft lb from memory. Too much will bind up the spring and case squeaks. Loosen and re-torque fixed mine.




Thanks AHY - I had no idea. And coincidently, the guys around the garage call me "Ted Torque" because I'm always pushing that ratchet like nobodies business when I'm tightening things up. This could very easily be a contributing factor to my squeaking! Thanks!


Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: WyleECoyote] #1713128
12/21/14 05:15 PM
12/21/14 05:15 PM
Joined: Feb 2004
Posts: 7,194
Harrisburg, Pa.
screamindriver Offline
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The MP chassis book refers to a "boom" sound if overtorqued...But at the other end of the equasion I've found that just torquing the U bolts one time led to a "boom" of it's own..The rear housing and the leafspring separating under the launch...Now I retorque them a few times after some miles on the vehicle... Just like a wheel...

The squeak is a tough one could be dry bushings as stated or the leaf interliners wearing in..Spray them if it gets too annoying..

Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: screamindriver] #1713129
12/21/14 09:26 PM
12/21/14 09:26 PM
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Posts: 8,390
Highland, MI.
Sunroofcuda Offline
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Speaking of the Mopar leaf springs, I have some of the OE plastic tip pads (with the shorty barrel clips), as well as some of the leaf spring bands with clear zinc finish. I used to supply & produce these bands to Year One for years - just quit doing these for them about a year ago. PM me if you need any of these parts.


No Man With A Good Car Needs To Be Justified
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: Sunroofcuda] #2738527
01/31/20 09:51 PM
01/31/20 09:51 PM
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote Offline OP
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WyleECoyote  Offline OP
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I started driving the car again; ha ha! A little 5 year pause.
Still squeaking! Anyone learn anything since then??


Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: WyleECoyote] #2738535
01/31/20 10:07 PM
01/31/20 10:07 PM
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Florida STAYcation
dIc dOc Deity ! Offline
The village idiot's idiot
dIc dOc Deity !  Offline
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Florida STAYcation
Jack the car up ... separate the leaves and inject between them with some grease

Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: dIc dOc Deity !] #2738546
01/31/20 10:37 PM
01/31/20 10:37 PM
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Fulton County, PA
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CMcAllister Offline
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JB80


If the results don't match the theory, change the theory.
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: CMcAllister] #2738607
02/01/20 07:06 AM
02/01/20 07:06 AM
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540 Online boogie
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Ringtown, Pa.
Originally Posted by CMcAllister
JB80


Someone else that uses JB80 penetrating spray. I have been using JB80 in my shop for over 20 years. Best stuff that I have found for rusted bolts, rusted bleeders, anything rusted fast, squeaky and sticking parts. Not cheap , but it works great.


548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: Dartsport540] #2738657
02/01/20 11:09 AM
02/01/20 11:09 AM
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Iowa
burdar Offline
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Iowa
Maybe disconnect the shocks and bounce the car. Make sure it's the springs and not the shocks.

I assume you loosened up the shackles and tightened them back up with the car on the ground? You always tighten those with the car on the ground so the bushing is in a neutral position with the car at rest.

Re: SQUEAK.SQUEAK.SQUEAK. New Leaf Springs... [Re: burdar] #2738712
02/01/20 01:09 PM
02/01/20 01:09 PM
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Florida
BDW Offline
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My bet is it’s metal on metal contact.
Remove the springs and you’ll see the witness marks.







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