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Old 03-31-2016, 12:44 PM
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Regearing. Carrier replacement?

2005 Sport. Dana 30 front, Dana 44 rear. 42RLE, Factory 3.73 gearing.

I called 2 quotes to regear my jeep to 5.13, I want to run 35's soon. And the first shop says the carrier in the D44 will need to be replaced. But, the 2nd shop says the carrier will NOT need to be replaced.

So who is right?

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Old 03-31-2016, 12:48 PM   #2
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The Dana 44's carrier break is between 3.73 and 3.92 so yes you'll need a new carrier for the 5.13 gearing. Or you can go with a set of gears that has a 'thick' ring gear which eliminates the need for the new carrier. So they're both right if the first shop was planning to inst a set of gears with a thick ring gear.

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Old 03-31-2016, 12:49 PM   #3
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Copied this from Quadratec:

Carrier Breaks:

As the pinion gets smaller with a lower (numerically higher) gear ratio the ring gear has to be moved over to be in contact with the pinion. One way to facilitate this is to make the ring gear thicker but this can only be done to a certain thickness. Once the max thickness of the ring gear is reached the gear carrier must be changed. These are called Carrier Breaks and they are gear ratio specific. What makes them so specific is that the mounting flange for the ring gear is moved over to allow for proper gear engagement between the pinion gear and the ring gear.

Gear carrier breaks (numerically):

Dana 30 3.55 and down, 3.73 and up
Dana 35 3.08 and down, 3.55 and up
Dana 44 4.88 and down, 4.89 and up

Example: You have a Dana 30 with 3.08 ratio, but you wish to go with 4.56 ratio. You will have to purchase a new carrier since the break is at 3.55 and 4.56 is numerically higher than 3.55.
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Old 03-31-2016, 01:09 PM   #4
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Originally Posted by Dextreme View Post
Copied this from Quadratec:

Carrier Breaks:

As the pinion gets smaller with a lower (numerically higher) gear ratio the ring gear has to be moved over to be in contact with the pinion. One way to facilitate this is to make the ring gear thicker but this can only be done to a certain thickness. Once the max thickness of the ring gear is reached the gear carrier must be changed. These are called Carrier Breaks and they are gear ratio specific. What makes them so specific is that the mounting flange for the ring gear is moved over to allow for proper gear engagement between the pinion gear and the ring gear.

Gear carrier breaks (numerically):

Dana 30 3.55 and down, 3.73 and up
Dana 35 3.08 and down, 3.55 and up
Dana 44 4.88 and down, 4.89 and up

Example: You have a Dana 30 with 3.08 ratio, but you wish to go with 4.56 ratio. You will have to purchase a new carrier since the break is at 3.55 and 4.56 is numerically higher than 3.55.
Quadratech is wrong on two of those three...

Dana 44 carrier break: 3.92 and lower ratios, 3.73 and higher ratios.
Dana 35 carrier break: 3.55 and lower ratios, 3.31 and higher ratios.

Quadratech just can't be relied on for accurate tech info. I sent them several notes over the years on things like the speedometer gear tooth counts but it took years for them to correct anything. At one time they had different charts on their websites with conflicting information. It looks like their carrier break chart is just another example of their carelessness.

http://www.differentials.com/technic...carrier-breaks
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Old 03-31-2016, 07:01 PM
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Thanks guys.
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Old 03-31-2016, 10:59 PM   #6
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Dana 30 can only go up to 4:88 though.....unless revolution has there new 5:13's out.

And if you ever decide to go to a HP30, you won't find reverse cut thick cut gears either.
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Old 03-31-2016, 11:41 PM   #7
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Dana 30 can only go up to 4:88 though.....unless revolution has there new 5:13's out.
I believe they do. It's not going to be this year for me anyhow, but I'm seriously leaning toward 5.13's for 33" tires and my 42rle transmission. I was planning 4.88 but I really would rather be a tad deep than anything.
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Old 04-01-2016, 08:08 AM   #8
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I believe they do. It's not going to be this year for me anyhow, but I'm seriously leaning toward 5.13's for 33" tires and my 42rle transmission. I was planning 4.88 but I really would rather be a tad deep than anything.
Especially with the 42RLE
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Old 04-01-2016, 10:40 AM
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Dana 30 can only go up to 4:88 though.....unless revolution has there new 5:13's out.

And if you ever decide to go to a HP30, you won't find reverse cut thick cut gears either.
All I know is this shop uses Yukon. And he said they wouldn't have to change the carrier.
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Old 04-01-2016, 01:43 PM   #10
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I had the same factory gears that you have and went to 4.56. The shop I went to used Yukon and did not replace the carrier, just used a thick gear in the D44. Works just fine!
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Old 04-01-2016, 07:50 PM   #11
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Be forewarned, the front dana 30 only goes as deep as 4:88.
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Old 04-01-2016, 08:02 PM   #12
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Be forewarned, the front dana 30 only goes as deep as 4:88.
5.13 with gears from Revolution Gear & Axle.
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Old 04-01-2016, 09:27 PM   #13
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5.13 with gears from Revolution Gear & Axle.
Correct but he said his shop uses Yukon.
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Old 04-02-2016, 10:18 PM
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Be forewarned, the front dana 30 only goes as deep as 4:88.
So you're saying that if the shop uses Yukon gears, I will need a new carrier for the D44? But I'll be fine if they use Revolution?
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Old 04-02-2016, 10:38 PM   #15
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So you're saying that if the shop uses Yukon gears, I will need a new carrier for the D44? But I'll be fine if they use Revolution?
What I'm saying is, revolution is the only one that makes 5:13 for a D30. How you get there is up to you. I'm not sure if the make a thick cut 5:13. If they install Yukon, you won't be getting 5:13.
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Old 04-02-2016, 10:58 PM
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How horrible would it be if I went to 4.88 instead, and ran 35's?

Remember, I'm running 3.73 with 33's, so it would have to be an improvement, right?
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Old 04-02-2016, 11:02 PM   #17
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How horrible would it be if I went to 4.88 instead, and ran 35's?

Remember, I'm running 3.73 with 33's, so it would have to be an improvement, right?
It'll be an improvement especially with the 42rle.
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Old 04-02-2016, 11:29 PM   #18
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How horrible would it be if I went to 4.88 instead, and ran 35's? Remember, I'm running 3.73 with 33's, so it would have to be an improvement, right?
I'm running 31" tires on 3.73 gearing with the 42rle and it's at the limit for me. The PO had ~32" metric MTR-K's on there before and it was unbearably craptastic to me. I can't imagine running 35" tires on this transmission without going to 5.38 gearing. I'm seriously looking at running 5.13 with 33" tires. As it is now, my transmission doesn't "hunt" but it will want to lug between 40-50 if I have the OD on and have to stay in that speed range.
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Old 04-02-2016, 11:36 PM   #19
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Another person for an opinion would be unlimited04LJ.. he runs 4:88 with 33's... Might give you a better perspective.

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