Tramsmission whine in reverse

[P&PJeep]

Looked at many forums and did not find any regarding transmission whine in reverse. So I am posting this. I recently installed Rubicon crate axles, 4:10 gears on my JL sport and immediately noticed a transmission whine in reverse between 1 to 4 mph. Is this normal? Dealer did various tests and concluded it is planetary gear noise consistent with 4:10 gearing and larger tires, 35 in my case.

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[Headbarcode]

Forward transmission gears are typically all helical cut, which runs quieter while also increasing the amount of surface contact in the mesh. Reverse gears, however, still tend to be straight cut, which will whine.

Is it possible that this whine was there with the stock axles, but your hyper awareness with the new axles has you listening closer than before?

 

[P&PJeep]

Forward transmission gears are typically all helical cut, which runs quieter while also increasing the amount of surface contact in the mesh. Reverse gears, however, still tend to be straight cut, which will whine.

Is it possible that this whine was there with the stock axles, but your hyper awareness with the new axles has you listening closer than before?

That could be the case. Never paid any attention when stock but backed out of the garage with the window down with the new axles and heard the noise.

 

[Headbarcode]

That could be the case. Never paid any attention when stock but backed out of the garage with the window down with the new axles and heard the noise.

Same sound in drive, or just in reverse? If just in reverse, than it's just the straight cut reverse gear in the transmission that you're hearing, so it should be good. Other than the whine, is it feeling good?

 

[P&PJeep]

Same sound in drive, or just in reverse? If just in reverse, than it's just the straight cut reverse gear in the transmission that you're hearing, so it should be good. Other than the whine, is it feeling good?

Noise is only in reverse, otherwise everything is good.

 

[dlporter]

Looked at many forums and did not find any regarding transmission whine in reverse. So I am posting this. I recently installed Rubicon crate axles, 4:10 gears on my JL sport and immediately noticed a transmission whine in reverse between 1 to 4 mph. Is this normal? Dealer did various tests and concluded it is planetary gear noise consistent with 4:10 gearing and larger tires, 35 in my case.

My rubicon has done this since day 1. I don’t think it’s a big deal.

 

[P&PJeep]

My rubicon has done this since day 1. I don’t think it’s a big deal.

Thank you

 

[El Zilcho]

My sport does this too.

 

[P&PJeep]

My sport does this too.

Thank you for your reply

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