Excessive Noise with UCA - Mustang Evolution

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Old 03-16-2016, 10:20 AM   #1
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Excessive Noise with UCA

I just installed an adjustable RTR UCA and mounting bracket and I know the NVH is obviously going to get a bit worse, but I just want to make sure I dont have any major problems.

Most noticeably, there is a loud clunking noise when getting on and off the gas in between my shifts. It is most noticeable from first to second and second to third then doesn't really happen from there. I assume this is just extra noise from driveshaft backlash and I am sure I heard some of this before the install so it might be normal

Where I am not so sure is when I am coasting in neighborhoods or parking lots with the clutch in it makes large clunking noises from the rear. It does it when I move the shifter into any gear and only happens at extremely low speeds. Doesn't do it when I am stopped or going over 20mph.

I am not getting any extra pinion noise and I am getting literally no wheel hop at all so I am assuming I set the pinion angle correctly and I am just paranoid, but any input would be greatly appreciated since I have never installed one before.
Thanks in advance.
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Old 03-16-2016, 12:17 PM   #2
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This is to be expected even if everything is installed correctly and torqued properly. You don't have the STa-Puft Marshmallow Man between you and the driveline any more. I get a bit of this on my auto car as well, with a Steeda UCA.

The lowest NVH is the Roush arm but, it's non adjustable and still allows the driveline lash through some, if it's there.
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Old 03-16-2016, 12:22 PM   #3
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I'm gonna keep it funky with you and let you know I had some clunking near my driveshaft/differential area as well. This happened after installing the 1 piece driveshaft on my Auto. The funny part is, after getting my 3.73s installed, the clunk went away. Now the shop did say they had to do something with the pinion angle. So I wonder if maybe you just need to double check yours?

I will be getting a full suspension installed on my ride in the next week or two so I might be in the same boat as you. But if not, then I would suggest getting your setup checked again.
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Old 03-16-2016, 12:32 PM   #4
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This could happen, if the ring gear was shimmed a little shallow on the factory setup and thus, the ring and pinion had a little more slop than expected. You can test this at the wheel. Just put her in neutral on jackstands and move the wheel back and forth til you feel resistance. Should be very little fore-aft slop at the wheel.

This low speed driveline stuff is pretty normal for these 2-piece DS, MT cars, though.
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2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP
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Old 03-16-2016, 02:12 PM   #5
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Ya I expected a lot of noise considering I ale have lower control arms, koni shocks and struts, and eibach sportline springs. Good performance, garbage ride quality.

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Old 03-16-2016, 02:47 PM   #6
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I have UMI lowers as well. The noise is pretty low overall but, that's due to my car being auto. The manuals are brutal with this.
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2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP
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Old 03-17-2016, 06:55 AM   #7
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I might just take it to a shop to make sure it's adjusted correctly. I could have just measured it in the wrong spots or something.

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Old 03-17-2016, 08:18 AM   #8
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Not a bad idea. It's easily done with a drive on lift in 5 minutes, with am angle finder.

I set mine up shadetree style, with jackstands and an inclinometer app. No issues.
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2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP
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Old 03-17-2016, 10:59 AM   #9
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I would probably do it myself again, but last time I did it was on my friend's lift and now that I am back up at school I do not even have any of my tools or jack, so if I want it done any time soon, I will need to probably just take it in. Especially since the more I drive it with a messed up angle the worse it will be in the long run.
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Old 03-17-2016, 11:15 AM   #10
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If in fact, it is messed up, yes, the pinion seal will take a beating and start to leak. It's an 8.8...they do that. I don't actually think you're whacked out here, though, some noise is to be expected with a change like this. Might as well be sure though. No more than 2* down on a 3 link car driven on the street, man. I set mine at -1.9.
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2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto N/A tune. 100 shot nitrous on BBR tune. Best e/t 11.42 at 120.64

2012 Premium GT, Candy Red, Brembo package, 3.73, MT82, Comfort, Tech, et al. Procal tune, Roush UCA, UMI poly LCA, GT500s, Steeda red bracket, Hoosier 28x10x16 bias drags. Best e/t 11.91 at 115.23 RIP
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Old 03-17-2016, 01:16 PM   #11
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I have the same problem. It started with the one 1pc drive shaft and magnified with the Super charger. I also have an adjustable UCA, lowering springs, and BMR Lower control arms. I was told by someone else i need the lower relocation brackets but I would think that could make it worse right now. (Change one thing at a time to find the true problem first) I can see where the drive shaft is rubbing the plastic under the car. If I don't let out semi easy it rubs. If I hit the gas hard it really rubs. I am on my third trip of trying to get the angle set right. The last time he did it there was no rubbing then after few days it got worse. The guy I have doing the set up was telling me the general rule of thumb is (4 link 1-3, ladder bars 3-5, leaf springs are 7-9).
So I am hoping I don't just need to go back to the 2pc Drive shaft!

Any help would be great!
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Old 03-17-2016, 01:41 PM   #12
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My relocation brackets are on the lowest setting right now but I don't imagine that being an issue

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