2013 gt suspension noise - Ford Mustang Forum
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post #1 of 22 (permalink) Old 05-09-2013 Thread Starter
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2013 gt suspension noise

I recently installed SR performance drop springs, orange koni SRT.T's and 05-10 gt500 style front strut mounts on my 2013 5.0. I installed the springs Forster a few months back but re used the stock struts/shocks/mounts (bad idea) and installed and ADJ pan hard bar. The front stock mounts started making clunking noises and the ride was POOR to say the least. Now with everything installed correctly and torqued to spec I get a slight clunking noise when going over normal road bumps/cracks/man hole lids ect. I do try to avoid these bumps still but the noise is definitely there. Seems to be coming from both front AND rear. It's not really loud. And does do it at all when the suspension travels a lot like when pulling out of my driveway. Is this slight clunking noise normal with this type of up grade? EVERYTHING IS TIGHT AND TORQUED TO SPEC! I used a 300$$ torque wrench that is SPOT ON! Anyone else running a similar set up have any noises like this? Any info is good info


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post #2 of 22 (permalink) Old 05-09-2013
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its usually the sway bar end links where they attach to the struts, make sure they are tight

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post #3 of 22 (permalink) Old 05-09-2013
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The noise from the rear I had sd well because I forgot to grease the ends of my pangard bar. The drivers side is impossible to get to so you'll need to replace the zerk fitting with a 90 angle. But that cleared up my rear end noise. As for the front.... im not sure. Id check the sway bar links like said before and make sure that the strut is tight. The konis are adjustable? If they are make sure its tightened.

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post #4 of 22 (permalink) Old 05-09-2013
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I'm trying to resolve this exact issue right now. Everything was fine until I put in the LCA relo brackets. About two weeks after installing them, I got the dreaded clunk. Sometimes it feels like it's coming from front of the drive shaft, other times it comes from the rear right beneath the back seat where the UCA is.

My adjustable UCA came loose once a few months ago, and allowed enough play to make almost an identical "clunk" over bumps etc.. however this time I've triple checked everything: UCA is tight, Panhard bar is tight, LCA's are tight etc..

Also, it appears to happen far more once the car is hot! (cold weather it's hardly noticeable). Could it be the stocker drive shaft?

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post #5 of 22 (permalink) Old 05-09-2013 Thread Starter
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I did change the zerk fitting out on the panhard bar to a 90 deg. But for some reason it won't take grease. I'm going to pull the bar all together, grease it, then put it back in. But my car didn't do this before I installed the koni's. even with 1.5in drop springs on the stock shocks/struts and one bad strut mount the car didn't sound like this?? Oh my koni's are NOT adjustable


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post #6 of 22 (permalink) Old 05-09-2013
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Make sure you guys are greasing the outside of any polyurethane bushings, especially the panhard bar and lower control arms. This is the stuff I use and it is excellent.

polyurethane lube
post #7 of 22 (permalink) Old 05-10-2013 Thread Starter
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Update: tore the rear suspension apart and found the jam nuts on my adj panhard bar loose and not enough grease. Also my upper shock bolts weren't tight enough. Fixed all that and re checked the centering of the rear end. Rear good to go. On to the front. Now here is we're I ran into an issue. Before I was just running the SR springs on my stock shocks and struts and strut mounts. I recently purchased orange koni's and 05-10 gt500 mounts to match because the stock 2013 strut mounts are POOP and started clunking when I turned the wheel. Anyways when I went to jack up my car the jack would NOT go under the car! WTF! The car is sitting about 0.5in lower in the front now after installing the koni's and mounts on the same springs I've been using! I'm going bonanas!!!8()


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post #8 of 22 (permalink) Old 05-11-2013
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My GT500 mounts make this noise as well. Never did it before on stock struts and mounts. Upgraded to Ford Racing struts & GT500 mounts now get front end noise at low speeds over bumps. It seems a pretty well documented problem from what I've read.
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post #9 of 22 (permalink) Old 05-11-2013 Thread Starter
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Figures!! Should have just got 2011-14 spec struts and HD camber caster plates. I'm having issues with my SR performance springs too. AM wants to do an exchange. Did adding the frpp struts and strut mounts lower your car another half inch?


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Quote:
Originally Posted by ddinn25 View Post
Figures!! Should have just got 2011-14 spec struts and HD camber caster plates. I'm having issues with my SR performance springs too. AM wants to do an exchange. Did adding the frpp struts and strut mounts lower your car another half inch?


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Nope. Already had Steeda sport springs installed from the previous owner, but on all stock parts. Installing FRRP shocks/struts and GT500 mounts did not change the ride height (nor should it).
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post #11 of 22 (permalink) Old 05-12-2013 Thread Starter
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Then I'm at complete loss then?? Unless my stock struts didn't allow the SR spring to settle all the way?? I drove the car about 1,000 miles after installing the springs to allow for settling before I had an alignment done. I ordered the koni's and mounts after having the springs for about 3,000 miles on the car. I pulled everything apart and installed the mounts and shocks/struts.drove the car a few days and noticed a slight clunking. When I went to jack the car back up and double check everything I couldn't get my jack under the car were I could before and had to drive up on 2 pcs of wood about 1/2 inch thick. The only issues I found were the panhard bar jam nuts were loose and the bushing not greased enough. Also the rear upper shock nuts weren't tight enough. I double check and torqued EVERYTHING to spec! The clinking is gone but my ride height HAS changed!


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Are you talking about the strut tower bolts or the large nut on top of the strut? If its the 4 strut tower bolts on each side they are only supposed to be torqued to 26 ft/lbs.
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post #13 of 22 (permalink) Old 05-12-2013 Thread Starter
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Yes the 4 strut mount bolts are 26 foot lbs and the center nut is 85 I believe


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post #14 of 22 (permalink) Old 05-12-2013 Thread Starter
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And on the newer cars the lower strut to knuckle bolts the torque is 166 foot pounds


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post #15 of 22 (permalink) Old 05-14-2013 Thread Starter
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I'm still getting a slight clunking sound in the front end when going over slight bumps?? Idk wtf is going on but it would be my luck to get defective parts!!


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