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Old 07-23-2013, 07:20 PM   #1
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Gear whine

I noticed done gear whine after I installed my lca's. it's slight but I'm worried the uca will make it worse. Steeda did my install and I have 3.73 frpp gears. Do you think I should have them take a look at it before my uca install?
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Old 07-23-2013, 07:22 PM   #2
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Did you allow them to break in properly??
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Old 07-23-2013, 07:26 PM   #3
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Did you allow them to break in properly??
I broke it in properly. They told me not to worry about any break in procedure. I did anyways though. I got these gears about a year ago. Do you think my adj panhard bar and lca's are transmitting this? It's just confusing because because it was never there before my lca install.
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Old 07-23-2013, 07:29 PM   #4
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373 gears naturally whine . Don't worry. If you hear knocking or the whine gets louder then you might need either better lubricant or they weren't aligned properly
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Old 07-23-2013, 07:32 PM   #5
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My 373s have been replaced and still have a whine at certain speeds
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Old 07-23-2013, 07:33 PM   #6
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Why am I just now hearing it though? That's what worries me.
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Old 07-23-2013, 07:49 PM   #7
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Because you never noticed .. Now that you have.you will always hear it. Funny.that way lol .. I have 373 and when i have the windows up i hear the whine
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Old 07-23-2013, 08:27 PM   #8
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I get a little whine when im doing about 80. Didnt know what it was a first but i finally caught on.
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Old 07-23-2013, 08:37 PM   #9
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Funny that's when mine go off at 80 and at 60-65 it's minor but it still pisses me off
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Old 07-23-2013, 08:57 PM   #10
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Its all about engine rpm and gear that sets off the louder whine
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Old 07-23-2013, 09:21 PM   #11
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I thought only improper break in period causes whine? I wanted to order the gears and tuner combo next week but not if it makes an annoying whine
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Old 07-23-2013, 09:28 PM   #12
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Took another drive. I can faintly here it with windows up and radio off. It's not bad. I just hope the uca doesn't make it worse.

I'm also getting more drive train clunking from the lca's I'm assuming.
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Old 07-23-2013, 09:30 PM   #13
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It's not that bad my exhaust covers up my small wine
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Old 07-24-2013, 01:20 PM   #14
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Hello MikeyT,

I would like to have you come by and take a 2nd look, make certain before you do any more mods. The upper will increase the sound you hear some, that’s the nature of a stiffer bushing.

It won't make noise, but the upper transmits some more of the sounds that are present.

What you are experiencing should not be any concerns ... but we would like to take a look just in case.

Please email me at tim @ steeda.com so we can set up a time to take a look .

Best Regards,

TJ
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Old 07-24-2013, 01:34 PM   #15
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Steeper gearsets in 8.8s need to be very carefully set up. The rear's standard assembly procedure on the line is bang the pinion nut to torque with a crush sleeve on the pinion. This gets you in the ballpark well enough with long gears but, steeper sets are more picky, if you want to avoid whine completely.

Thus, a very careful pattern check is required, both on accel and decel to assure it's as close to perfect as possible. This can take a few tries, as you'll want to start just below the recommended torque and work up to it, as if you overshoot, you'll have to dismantle the gearset and replace the crush sleeve and start over.

If you've got whine and more than a few miles on the gears, it's unlikely the issue can be resolved by adjustment of anything.

I have this on my factory 3.73s so I went with a Roush upper and thus, no added NVH. When I next added poly LCAs it got a little louder at certain speed ranges. Not horrible but present.

You can consider dynamatting the spare tire well and back area, as it acts as a tympanum for the noise.
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Old 07-24-2013, 03:12 PM   #16
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Hello MikeyT,

I would like to have you come by and take a 2nd look, make certain before you do any more mods. The upper will increase the sound you hear some, that’s the nature of a stiffer bushing.

It won't make noise, but the upper transmits some more of the sounds that are present.

What you are experiencing should not be any concerns ... but we would like to take a look just in case.

Please email me at tim @ steeda.com so we can set up a time to take a look .

Best Regards,

TJ
Will do. Thanks for offering!
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Old 07-24-2013, 04:07 PM   #17
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Funny that's when mine go off at 80 and at 60-65 it's minor but it still pisses me off
+1. I also get a slight whine at 60-65 mph. This is with the factory 3.73s though.
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Old 07-25-2013, 05:36 AM   #18
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Yo mikey where do you live??
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Old 07-25-2013, 06:31 AM   #19
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Good old miami
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Old 07-25-2013, 06:41 AM   #20
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Have you tried dynamiting the spare tire well yet? If so how did it sound after?
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Old 07-25-2013, 06:44 AM   #21
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Have you tried dynamiting the spare tire well yet? If so how did it sound after?
Nope. I'm going to try that eventually.
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Old 07-25-2013, 07:19 AM   #22
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Good old miami
Lol nice am originally from there
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Old 07-25-2013, 07:19 AM   #23
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I'm getting my Roush exhaust in today hopefully I drown it out
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Old 07-25-2013, 07:59 AM   #24
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Its helps haha. Problem is once you know its there, you will always be able to notice it.
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Old 07-25-2013, 08:18 AM   #25
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Quote:
Originally Posted by tj@steeda View Post
Hello MikeyT,

I would like to have you come by and take a 2nd look, make certain before you do any more mods. The upper will increase the sound you hear some, that’s the nature of a stiffer bushing.

It won't make noise, but the upper transmits some more of the sounds that are present.

What you are experiencing should not be any concerns ... but we would like to take a look just in case.

Please email me at tim @ steeda.com so we can set up a time to take a look .

Best Regards,

TJ
That good support, makes you appreciate customer service. Love when I see companys support the customer.

I didn't drive my 13 much before I came to Afghan, but I have very little whine at all. I did get her up a rolling though. I have factory 3.73 and I hope It doesn't pick-up over time. Does anyone else notice this after break-in or was this always the case?
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Old 07-25-2013, 08:29 AM   #26
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I never had any noises until I replaced the stock lcas with UPR billet lcas and the uca and mount with UPR adjustable uca and mount. The Poly bushings are much higher durometer than the stock rubber bushings and transmit more nvh. I have stock 3.73's with 48k miles and have zero issues with them, it's just the nature of harder bushings. As for the OP I doubt it was a bad install its probably just that he never heard it until he had stiffer bushings.
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Old 07-25-2013, 08:32 AM   #27
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Nope. I'm going to try that eventually.
Let me know how that works out. I was thinking about doing the TruFiber Seat delete and I am sure if I have a little whine, now It will only get Bigger if I do the seat deletes.
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Old 07-25-2013, 08:41 AM   #28
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Have you tried dynamiting the spare tire well yet? If so how did it sound after?
I can't imagine that would do much to eliminate nvh from gear whine being transmitted through the lcas. The lcas go from the axle directly to the body of the car immediately below the back side of the door jamb which would cause the nvh to reverberate through the chassis, making dynamat in the spare tire area useless, or so it would seem, let us know how it works if you do it thougj
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Old 07-25-2013, 08:48 AM   #29
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[QUOTE=GrabberBlue5.0;1734722]I never had any noises until I replaced the stock lcas with UPR billet lcas and the uca and mount with UPR adjustable uca and mount. The Poly bushings are much higher durometer than the stock rubber bushings and transmit more nvh. I have stock 3.73's with 48k miles and have zero issues with them, it's just the nature of harder bushings.QUOTE]

How much of a difference in sound do you have?
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Old 07-25-2013, 09:23 AM   #30
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Not much, it's pretty faint, I can usually only hear it with the windows up and radio of while cruising
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Old 07-25-2013, 10:41 AM   #31
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I can't imagine that would do much to eliminate nvh from gear whine being transmitted through the lcas. The lcas go from the axle directly to the body of the car immediately below the back side of the door jamb which would cause the nvh to reverberate through the chassis, making dynamat in the spare tire area useless, or so it would seem, let us know how it works if you do it thougj
You'd be surprised. I thought like you did and dynamatted the area under the seat and hit the bottom with stonechip to no effect. I piled a bunch of loose HD foam into the well of my BBP car and there was a marked decrease in transmitted noise. If you give a shove to the trunk floor in the area, you'll see why. Noise = vibration and that big flat panel of steel is more willing to move around than the convoluted bent shapes that form the unibody at the LCA mounts. The thing acts like a big loud speaker.
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Old 07-25-2013, 02:02 PM   #32
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I have a steeda adjustable uca , just installed it, before hand i had no whine now i do. Gonna replace it with a roush uca which is whisper quiet!
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