Noise after regear

[Thorbeast]

2016 Ram 2500 6.4

In June I had a local shop install 4.88 gears from nitro. During the break in period I noticed the gears making noise. It's tough to explain but it's only there when I'm coasting at speeds around town, I can't notice it at highway speeds. It's a noise you can feel similar to a wheel bearing if that makes sense.

Talked to the owner of the shop and he said it was normal.

Finished the break in period, put amsoil 75w90 in the axles per their recommendation. The noise was still there, and its seemed to increase over time. I again talked to the shop about it a few weeks later, they had me bring it in. They said they popped the diff cover off, checked the fluid, no metal, backlash was within spec, and they even changed the fluid in the transfer case to be sure. They said everything was OK and nothing to worry about.

I emailed nitro explaining the situation and they said as long as there's no metal in the fluid then it should be fine.

Now I don't care about noise if it's completely harmless, but it just is bugging me that it feels like something isn't right. If I Google noise after regear, it seems across all the ram and jeep forums the majority vote is that the gears should not be making noise and to bring it back. And I did that, but they just told me it was fine.

Then I got the truck inspected this week, told them about it too and asked that just if it's some weird coincidence with timing, to please really thoroughly check the wheel bearings and stuff. They said everything they checked was solid.


So am I being paranoid and should just listen to the shop and nitro? Or what should I do here?

 

[89grand]

I had my 2000 TJ Wrangler regeared with Nitro 4.10's along with Detroit Truetacs front and rear a while back, and I didn't notice any noises at all. All I noticed was a drastic increase in power, and some amount of freeway vibration, because I really need a SYE and adjustable control arms, but no noises whatsoever.

 

[Burla]

They can whine when new, which I don't really understand because I never heard of new gears whining, just re-gears. You have a receipt and a warranty yes? Call @U&A and see if his whine eventually went away.

 

[Fitzreefer]

Hmmm. Pinion bearing not torqued correctly, maybe. I had a shop regear a TJ once. After I brought it to somebody who actually knew what they were doing, they figured out my pinion bearing wasn't torqued right and my pinion race was spinning. That messes up the axle housing pretty good because the race needs to be pressed in. Once it spins the housing is f'd up. When he reinstalled a new bearing he had to dimple the housing to set it and put a lot of threadlock in when inserting the race. It was a gamble but held for the rest of the time I owned the vehicle.

Sent from my Moto Z (2) using Tapatalk

 

[ram1500rsm]

It's not normal per se but it may be normal for that brand though. I had a set of singing Richmond 4.30's in my Stang, also had a set of bone quiet like G2 4.56's in my Jeep JKU.
If the shop know what they're doing and they checked and are telling you the backslash is correct, then it might be possible your new gears are just noisy. If they're telling you BS you'll know later on unfortunately. Did they give you a warranty ? What diff fluid are you using ?

 

[U&A]

Nitros have been known to make noise.

Im not worried one bit. If they eat themselves i will not put 4.88’s back in. Im going 5.13’s and true LSD in the front.


Sent while firmly grasping my redline lubed RAM [emoji231]

 

[BEAST19]

2016 Ram 2500 6.4

In June I had a local shop install 4.88 gears from nitro. During the break in period I noticed the gears making noise. It's tough to explain but it's only there when I'm coasting at speeds around town, I can't notice it at highway speeds. It's a noise you can feel similar to a wheel bearing if that makes sense.

Talked to the owner of the shop and he said it was normal.

Finished the break in period, put amsoil 75w90 in the axles per their recommendation. The noise was still there, and its seemed to increase over time. I again talked to the shop about it a few weeks later, they had me bring it in. They said they popped the diff cover off, checked the fluid, no metal, backlash was within spec, and they even changed the fluid in the transfer case to be sure. They said everything was OK and nothing to worry about.

I emailed nitro explaining the situation and they said as long as there's no metal in the fluid then it should be fine.

Now I don't care about noise if it's completely harmless, but it just is bugging me that it feels like something isn't right. If I Google noise after regear, it seems across all the ram and jeep forums the majority vote is that the gears should not be making noise and to bring it back. And I did that, but they just told me it was fine.

Then I got the truck inspected this week, told them about it too and asked that just if it's some weird coincidence with timing, to please really thoroughly check the wheel bearings and stuff. They said everything they checked was solid.


So am I being paranoid and should just listen to the shop and nitro? Or what should I do here?

I had a similar issue a couple years ago . I had some motive 392 gears put in my rear diff, (2015ram 1500) a reputable shop highly recommended by many for this type of job...


I could notice some “shinging” type noise almost off a metal type noise like yours , only at coasting and slow speeds I could hear it with the radio off ...the tech who installed it came with me and verified the noise so I knew it wasn’t just me being neurotic.

He claims he’s confident in the install but took the cover off and rechecked.
Claimed it was all good and sent me on my way.

Btw- After the install I did the proper break I. Period and had them flush and install with redline diff fluid....

He assured it was fine and to not let it bother me . As he had to struggle to hear it, he claimed Bon mopar gears are known to be noisier than aftermarket ones.... even tho I called motive gears and they Ofcourse said it should be silent .

But to this day I have put about 10-15k miles on and have had no issues with the 3.92 gears he installed and I can still hear the same noise if I try.

I hope this brings some piece of mind to you , I’d say just keep ur receipts and document your conversations with him
Just Incase some major failure down the road. Until then let it rip!


Here’s a some entertainment with my gears. ;-).

Sent from my iPhone using Tapatalk

 

[Thorbeast]

I had a similar issue a couple years ago . I had some motive 392 gears put in my rear diff, (2015ram 1500) a reputable shop highly recommended by many for this type of job...


I could notice some “shinging” type noise almost off a metal type noise like yours , only at coasting and slow speeds I could hear it with the radio off ...the tech who installed it came with me and verified the noise so I knew it wasn’t just me being neurotic.

He claims he’s confident in the install but took the cover off and rechecked.
Claimed it was all good and sent me on my way.

Btw- After the install I did the proper break I. Period and had them flush and install with redline diff fluid....

He assured it was fine and to not let it bother me . As he had to struggle to hear it, he claimed Bon mopar gears are known to be noisier than aftermarket ones.... even tho I called motive gears and they Ofcourse said it should be silent .

But to this day I have put about 10-15k miles on and have had no issues with the 3.92 gears he installed and I can still hear the same noise if I try.

I hope this brings some piece of mind to you , I’d say just keep ur receipts and document your conversations with him
Just Incase some major failure down the road. Until then let it rip!


Here’s a some entertainment with my gears. ;-).

Sent from my iPhone using Tapatalk

Jesus christ that truck rips! What do you have done to it??


Thanks man, I guess that makes me feel a bit better.

 

[RAMTRPR]

I have 4.56’s in mine as well. I only get noise when cruising around 55-65 then it goes away. I was told it was normal as well.

Between my tires and my exhaust I can’t really hear it though . Need to take it in to have them looked at just in case though.

I’m on a 6” lift and 35’s as well so the re-gear is to get me back around the 3.92 range


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[Thorbeast]

I have 4.56’s in mine as well. I only get noise when cruising around 55-65 then it goes away. I was told it was normal as well.

Between my tires and my exhaust I can’t really hear it though . Need to take it in to have them looked at just in case though.

I’m on a 6” lift and 35’s as well so the re-gear is to get me back around the 3.92 range


Sent from my iPhone using Tapatalk Pro

Mine is only low speeds with my foot off the gas. There's no sound from them if I'm accelerating. There may be noise decelerating at highway speeds but there's too many other sounds like tires and exhaust at that point to notice it

 

[Pull Ya]

In all of my experience(lots and lots of years)with lower gear ratios 4.11 up to 5.13's I have found that lower gears have a tendency to make more noise than the normal stock gears you get from the factory. I had the problem in the early 60's and 70's and apparently some of the gear companies have not solved the problem yet. You can have a set of gears that are set up perfectly and some will still make some noise. Not all and not every time, that is the frustrating part. IMHO if you set the gears up correctly and they still make noise then I think that is something you have to live with unless you buy another set of gears from another company and see if they are any better. I have had the best luck with factory gears, however, the selection of lower ratios is pretty limited.
Jay

 

[RedSRT4Me]

In all of my experience(lots and lots of years)with lower gear ratios 4.11 up to 5.13's I have found that lower gears have a tendency to make more noise than the normal stock gears you get from the factory. I had the problem in the early 60's and 70's and apparently some of the gear companies have not solved the problem yet. You can have a set of gears that are set up perfectly and some will still make some noise. Not all and not every time, that is the frustrating part. IMHO if you set the gears up correctly and they still make noise then I think that is something you have to live with unless you buy another set of gears from another company and see if they are any better. I have had the best luck with factory gears, however, the selection of lower ratios is pretty limited.
Jay

Agreed 1000%

In my experience the gears are going to make noise from the jump or its not. Not sure if some brands are more prone to it but I've read complaints from owners about every manufacturer out there.

 

[SnapperJP]

Coast noise is most likely back lash on the extreme side of tolerance or bad tooth contact. I have done a lot of redoes from other shops over the years and found the gear contact is the biggest problem. The guys are paid flat rate and want it out in that time or less. As picky as I was on making the tooth contact perfect on both drive side and coast side, a full day of set up was not uncommon especially with aftermarket gears.

 

[Pull Ya]

^^^^^ This is some great information!!!!! This doesn't mean you're going to be an expert after you read it but it sure is a great foundation!!!!!!! IMHO
Jay

 

[Burla]

Coast noise is most likely back lash on the extreme side of tolerance or bad tooth contact. I have done a lot of redoes from other shops over the years and found the gear contact is the biggest problem. The guys are paid flat rate and want it out in that time or less. As picky as I was on making the tooth contact perfect on both drive side and coast side, a full day of set up was not uncommon especially with aftermarket gears.

Thanks, and welcome to ram forum. Real informative.

 

[BEAST19]

Jesus christ that truck rips! What do you have done to it??


Thanks man, I guess that makes me feel a bit better.

Jesus christ that truck rips! What do you have done to it??


Thanks man, I guess that makes me feel a bit better.

Hahah thanks. Nothing crazy....

-Arh long tube headers with high flow cats
- vararam intake
- mbrp exhaust
-392 gears
-jay green tune time accommodating the aftermarket parts.


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[RWlRAM]

Haven't seen the chart SnapperJP posted in decades.

Taking the time to do it right is a lost art.

I have a friend with an older Cherokee and the rear end has made noise for years and it's stock.

 

[Thorbeast]

Update

It was a bad pinion bearing in the rear end. Good news is they're covering it under warranty

 

[Thorbeast]

Update. Got it back from the shop. Sound is there still and if anything it's louder. Next step will be to have a different shop look at it that literally only does differentials

 

[RedSRT4Me]

Update. Got it back from the shop. Sound is there still and if anything it's louder. Next step will be to have a different shop look at it that literally only does differentials

Same ring gear installed that was previously making noise?