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Cost for regearing

Oilburner

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On a 8-speed, especially with factory 4.10 axle gears, it's completely unnecessary to regear. Some guys just have a hard time letting go of yester-year.
So you're saying the auto trans has a magical extra-underdrive to get a set of 40's rolling from a standstill?
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The shop wants to inspect everything and change out the gear oil because there will be metal shavings in the gear oil from the break in its best to do that and retighten everything
 

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https://rebeloffroad.com/regear-my-jeep/

Rebel Offroad advertised price. Included gear oil change at 500 miles.
Understand a couple of things from that ad. First is that it covers up to a 2016. Curious what 2017 and up will be (probably similar). They use a minor install kit which means they will re-use your existing bearings (not a big deal on low mileage rigs). Lastly, they use Revolution gear sets which are top notch Circle K gears. I also use Revolution gears and they set up very easy and are very quiet running gears.
 

hosejockey61

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Can someone explain why this would be necessary with a Mopar 2.5" lift running 37's? I've not noticed a thing that leads me to believe this is a 'must'.
It's not MUST until it is. Drive up steep mountain highways and trying to maintain speed is a PITA. The 8 speed auto does make it a little nicer though I will agree.
 

hosejockey61

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On a 8-speed, especially with factory 4.10 axle gears, it's completely unnecessary to regear. Some guys just have a hard time letting go of yester-year.
I wouldn't say it's completely unneccessary. Drive it where it matters and you will notice. Worth it enough to re-gear? Only the individual owner can answer that. I personally like having pep off the start as well as maintaining highway speeds in the mountains.
 

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hosejockey61

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The shop wants to inspect everything and change out the gear oil because there will be metal shavings in the gear oil from the break in its best to do that and retighten everything
Can you explain what you mean by re-tighten everything?
 

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So you're saying the auto trans has a magical extra-underdrive to get a set of 40's rolling from a standstill?
When did the OP or myself ever mention 40s in this thread?

I wouldn't say it's completely unneccessary. Drive it where it matters and you will notice. Worth it enough to re-gear? Only the individual owner can answer that. I personally like having pep off the start as well as maintaining highway speeds in the mountains.
6% grades. Towing. Offroad trails. Where else can I drive that it matters more?

Can you explain what you mean by re-tighten everything?
It's common practice to check torque values on fasteners after a little time has passed just to ensure all is well.
 

Hawkeyes3312

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It's not MUST until it is. Drive up steep mountain highways and trying to maintain speed is a PITA. The 8 speed auto does make it a little nicer though I will agree.
I've been in the mountains in NC and didn't have any issues maintaining significant speeds. Looks like you're in CO so maybe more of an issue there?!?!?
 

hosejockey61

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I've been in the mountains in NC and didn't have any issues maintaining significant speeds. Looks like you're in CO so maybe more of an issue there?!?!?
There's mountains in North Carolina?

I live south of Denver at 6300 feet. Driving to 10,000 feet can be a challenge if under geared. I don't mean that you won't make it but feeling the constant shifting of gears gets annoying real quick. In my TJ on 35's and geared at 4:88 I still find myself struggling on the steep hills. The JT 8 speed tranny has been nice so far but I've only had it for 1200 miles and haven't been in the mountains yet.
 

hosejockey61

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When did the OP or myself ever mention 40s in this thread?
So it matters for 40's but not 37's? The point is that it does in fact matter to some degree based on tire size. You don't think it's needed, whereas I think it does. Is it worth the money? Like I said before, only the owner can answer that.

QUOTE="WXman, post: 383022, member: 10103"]
6% grades. Towing. Offroad trails. Where else can I drive that it matters more?[/QUOTE]

Exactly right. So you're telling me that when you're towing something up a 6% grade your motor and transmission behave the same as with smaller tires and that deeper gears wouldn't have an impact?

QUOTE="WXman, post: 383022, member: 10103"]
It's common practice to check torque values on fasteners after a little time has passed just to ensure all is well.[/QUOTE]

I know what goes into it and needs to be done. Re-tighten is a lot different than checking torque. If something comes loose after setting gears you more than likely did something wrong.
 

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ok i got a question....i bought a overland that they made a Rubicon (Loosely stated), and dealer kinda got me a little since i wanted a Rubicon...any way its lifted and running 35s with the 3.73....gas mileage is trash and i was told at time of purchase it would run right with the lift and tires well not so much its doggy and 14 mpg average. so it looks like dealer will re-gear to fix my issue so 4.10 or 4.56? i do a lot of commuting but still would like some fire from the line. and what will either option feel like real world?
 

hosejockey61

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ok i got a question....i bought a overland that they made a Rubicon (Loosely stated), and dealer kinda got me a little since i wanted a Rubicon...any way its lifted and running 35s with the 3.73....gas mileage is trash and i was told at time of purchase it would run right with the lift and tires well not so much its doggy and 14 mpg average. so it looks like dealer will re-gear to fix my issue so 4.10 or 4.56? i do a lot of commuting but still would like some fire from the line. and what will either option feel like real world?
I'm on 35's with the 4:10's and getting 14-15 mpg as well. I haven't looked at the tranny specs in detail yet so I can't give an form answer on what gears to go with. If I were changing mine out right now, I'd be going 4:56 and possibly deeper if I anticipated moving to 37's. Just my .02
 

hosejockey61

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Yea there's a small mountain range called the 'Appalachian Mountains' or something like that. :CWL:
I was trying to be facetious lol. I added an emoji that didn't show up with the post. Oh well.

Just for perspective, mount Mitchell in the Appalachians is just over 6,000 feet. Our Rocky mountains top out at over 14,000 feet. Paved roads here go over 10,000 feet and some of the trails I've driven top out at 13,000 feet. Not a dick measuring contest, just for perspective. 6% grade in your address is the same as 6% here so gears work the same, so I get it. I have set quite a few sets of gears and can tell you first hand that the right gears can make a HUGE difference. How much with the new 8 speed is what I want to find out.
 
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Update... for those running a sport with 37 and raised, definitely regearing makes a huge difference and brings the truck back to great running condition. Prior to doing it it was slow and gears not changing correctly .. 8th gear was like a slug. Now it is running great so if you are in such a position, I recommend it.
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