Atlas gear whine w/ 6 speed - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 15 Old 12-07-2013, 05:41 PM Thread Starter
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Atlas gear whine w/ 6 speed

I just put an Atlas 4.3:1 2 speed in my manual trans 2008. I am curious as to how much gear whine is normal. It gets louder when I'm not on the gas - no rattle, I can just hear the gear noise. I've checked and recheck the fluid level - it's been consistent since I put it in. I've been driving it daily (30 miles back and forth to work) for about 10 days now.

Thanks for any input.

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post #2 of 15 Old 12-07-2013, 06:03 PM
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That's a lot of gear reduction I think you are okay if it's not making other noises

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post #3 of 15 Old 12-07-2013, 06:23 PM
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Have you contacted Advance Adaptes and asked them?

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post #4 of 15 Old 12-07-2013, 06:44 PM
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The Atlas in my TJ whined quite a bit. It did nothing else, so I considered it normal.
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post #5 of 15 Old 12-08-2013, 10:53 AM
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It is very noticeable if you don't lock out your front axle. I always can tell if my front is locked or not by the sound.

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post #6 of 15 Old 12-08-2013, 11:46 AM
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Quote:
Originally Posted by Red Rock View Post
I just put an Atlas 4.3:1 2 speed in my manual trans 2008. I am curious as to how much gear whine is normal. It gets louder when I'm not on the gas - no rattle, I can just hear the gear noise. I've checked and recheck the fluid level - it's been consistent since I put it in. I've been driving it daily (30 miles back and forth to work) for about 10 days now.

Thanks for any input.

JD
You'll get used to it... Remember, you are going from a chain driven t-case to a gear driven one.


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post #7 of 15 Old 12-08-2013, 04:08 PM Thread Starter
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Thanks for the replies guys! I figured it was normal - I've been in another JK with an Atlas, but it's an auto trans. I could hear it in that one also, but it's been a while since I drove it, so I can't remember exactly how loud it was. Mine's not screaming like something is busted or anything.

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So someone thinks RDY4RKS' 6.1 hemi, solid axle, arb'd, atlas'd, long arm'd, 42'd jeep is cookie cutter? Fuck it. Im going outside and burning mine to dust. There is no hope.
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post #8 of 15 Old 12-08-2013, 05:16 PM
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I had one in my old YJ. It did make some gear whine, but it made so many other mechanical noises it was just part of the symphony.
It was an early one that had a bit of gear clatter as well, was never worth trying to repair.


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post #9 of 15 Old 12-08-2013, 07:02 PM
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Quote:
Originally Posted by PIG View Post
You'll get used to it... Remember, you are going from a chain driven t-case to a gear driven one.
i'd understand it being normal when he's in anything other than 2w hi. but should it whine in 2hi? are the high gears straight cut?

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post #10 of 15 Old 12-08-2013, 07:04 PM
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If the front ds is turning it makes noise.

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post #11 of 15 Old 12-08-2013, 07:08 PM
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Yes, an Atlas will always make more noise. A chain is quiet, gears are noisy but strong. Even in 2wd, the front is spinning, and it is gear on gear no matter what.
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post #12 of 15 Old 12-08-2013, 08:43 PM
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Quote:
Originally Posted by thedirtman View Post
If the front ds is turning it makes noise.
i understand the front ds is always spinning since we dont have lockout hubs, but from what i understand on the Atlas, if you're in 2wd. the front output is spinning on the shaft only and there is no gear freespinning on the front output. if you look at videos of an open atlas2 you will notice that. more noise with the gear driven tcase i understand, but shouldnt really be affected by the front ds

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post #13 of 15 Old 12-08-2013, 08:49 PM
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So are you saying that they don't make noise when in 2wd?

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post #14 of 15 Old 12-08-2013, 09:14 PM
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Quote:
Originally Posted by thedirtman View Post
So are you saying that they don't make noise when in 2wd?
not saying they dont or do since i don't own one. but looking at the way it's built and operated the front driveshaft turning in theory shouldnt cause more noise

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post #15 of 15 Old 12-08-2013, 09:32 PM
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Not sure what your theory is based on but in reality they make noise when the driveshaft is turning. It is quite a bit more quiet with the front ds disconnected.

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