Regearing Stock Mojave?

[SneakyGOAT]

Hey guys. Ive looked all over for this and couldnt find anything on it. My question was what happens or i guess if there is any benefit to regearing and keeping the stock 33 tires. I understand that changes the power/torque ratios but what impact would that truly have on daily driving, mileage, etc? Would there be any benefit in doing so?

More specifically I'm referring to the 4.56 and 4.88 standard regears I see talked about here frequently. In my case Im also in a manual.

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[whysoserious]

 

[chr15m]

Hey guys. Ive looked all over for this and couldnt find anything on it. My question was what happens or i guess if there is any benefit to regearing and keeping the stock 33 tires. I understand that changes the power/torque ratios but what impact would that truly have on daily driving, mileage, etc? Would there be any benefit in doing so?

More specifically I'm referring to the 4.56 and 4.88 standard regears I see talked about here frequently. In my case Im also in a manual.

Try and find a Sport S or Willys model with the MT to test drive. Decide if the way your Mojave drives vs a MT 3.73 model is worth a few thousand.

More or less, better low end, worse top end than stock. You will be shifting sooner (time not RPM) as well, I cant remember how the MT drove exactly but some people don't like shorter gears in manuals.

 

[SneakyGOAT]

Try and find a Sport S or Willys model with the MT to test drive. Decide if the way your Mojave drives vs a MT 3.73 model is worth a few thousand.

More or less, better low end, worse top end than stock. You will be shifting sooner (time not RPM) as well, I cant remember how the MT drove exactly but some people don't like shorter gears in manuals.

Ahhh. As I sit and think on that more it makes more sense and just completed the puzzle for me in terms of mechanics and how that translates to performance. How im thinking about it is the higher gear ratio the more power from the engine is shifted to support better lower gear power/torque with the trade off of upper end power/speed. Then since the power in the lower gears is increased via torque, your engine reaches 6-7k rpms faster and thus shortening the low end gears. With that said, it makes even more sense now as to how that changes with tire size due to the demand/torque required to roll a heavier, larger tire. Almost like a wheel on a stick, rolling the stick between your fingers to move the wheel. If you increase the diameter and weight of the wheel, the amount of torque imput from your fingers needs to increase as well to achieve the same output(roll). The gear ratio would simply be changing how much of your total available strength can be utilized to roll the stick in your fingers.

Or more simply its like trying to pedal a bike from 0mph in 4th gear vs 1st gear.

Am I conceptualizing that correctly?

 

[DiehardTory]

To answer a question.. Keeping the 33s (stock size) and the OEM gearing; which was engineered to provide optimum MPG and Performance I see NO reason to spend a couple of grand to go to 4.56 or beyond. Yes if you were pulling a large trailer or camper then re-gearing would be a huge benefit or if you go up to 35s or 37s.. check out this thead: https://www.jeepgladiatorforum.com/...-37s-yes-yes-you-do.85572/page-2#post-1383432

 

[chr15m]

Ahhh. As I sit and think on that more it makes more sense and just completed the puzzle for me in terms of mechanics and how that translates to performance. How im thinking about it is the higher gear ratio the more power from the engine is shifted to support better lower gear power/torque with the trade off of upper end power/speed. Then since the power in the lower gears is increased via torque, your engine reaches 6-7k rpms faster and thus shortening the low end gears. With that said, it makes even more sense now as to how that changes with tire size due to the demand/torque required to roll a heavier, larger tire. Almost like a wheel on a stick, rolling the stick between your fingers to move the wheel. If you increase the diameter and weight of the wheel, the amount of torque imput from your fingers needs to increase as well to achieve the same output(roll). The gear ratio would simply be changing how much of your total available strength can be utilized to roll the stick in your fingers.

Or more simply its like trying to pedal a bike from 0mph in 4th gear vs 1st gear.

Am I conceptualizing that correctly?

Sparing a long winded mutlidimensional answer that will but we'll open to varying circumstances and opinions, yes you're concept is pretty much sound. Surely someone will expand on that or perhaps critique it, but the aphorism at the end (bike gearing) is right.

When I had my s2000 regears were popular for certain circumstances. This video did a good job of visualizing the changes. Essentially the lower gear car accelerates faster but in the last 4 seconds the taller geared car pulls readily. On a stock Mojave you can figure your outcome accordingly. I don't know the MTs individual ratios though and in some cases regears can make the truck or car more enjoyable, in others, first gear is useless and mostly a hassle.

 

[SneakyGOAT]

Sparing a long winded mutlidimensional answer that will but we'll open to varying circumstances and opinions, yes you're concept is pretty much sound. Surely someone will expand on that or perhaps critique it, but the aphorism at the end (bike gearing) is right.

When I had my s2000 regears were popular for certain circumstances. This video did a good job of visualizing the changes. Essentially the lower gear car accelerates faster but in the last 4 seconds the taller geared car pulls readily. On a stock Mojave you can figure your outcome accordingly. I don't know the MTs individual ratios though and in some cases regears can make the truck or car more enjoyable, in others, first gear is useless and mostly a hassle.

Interesting and thank you for the vid. Ive been going down the rabbit hole of engine swaps for entertainment and that got me thinking of the potential on gearing overall within manuals and it seems by your anecdote about the s2000 i wasnt the only one to think about it but now i get it

 

[SneakyGOAT]

To answer a question.. Keeping the 33s (stock size) and the OEM gearing; which was engineered to provide optimum MPG and Performance I see NO reason to spend a couple of grand to go to 4.56 or beyond. Yes if you were pulling a large trailer or camper then re-gearing would be a huge benefit or if you go up to 35s or 37s.. check out this thead: https://www.jeepgladiatorforum.com/...-37s-yes-yes-you-do.85572/page-2#post-1383432

Yeah I wasnt necessarily looking to regear unless I went up tire size which is still a ways out but one rabbit hole led to another and i started wondering if there was something out there or a reason for people who may have opted to do it outside of the obvious towing And or tire upgrade. But that was due to a lack of understanding

 

[Fly-by]

OP - what is your use case?

I have a 2023 Mojave 6MT regeared to 5.38, still on stock 33s.

It's a simple math problem based on your use case. I made my own calculator but there are plenty online.

I drive forest and logging roads that are rough but don't require anything bigger than 33s to get through. Going bigger would just add rotational mass and the Mojave suspension is well tuned to the stock wheel package. My priority is covering a lot of ground comfortably.

I don't regret super deep gears with the MT at all.

Reverse went from way too tall for offroad use to ok.

While not fast, the truck no longer falls on its face shifting 2-3, which has a big ratio gap.

Many situations that would have required 4L can be addressed in first gear of 4H.

6th is actually responsive on the highway. 3k at 73-74 mph.

I have 6k miles after the regear. 4k have been off pavement. No idea of mpg impact. I didn't buy it for economy.

Regearing is a fairly expensive proposition. I wouldn't bother with a small change to 4.56. If you go 5.13 or 5.38 and decide you've overdone it, you can always go up to 35 or 37 tires.

 

[TheRealGinjaNinja]

OP - what is your use case?

I have a 2023 Mojave 6MT regeared to 5.38, still on stock 33s.

It's a simple math problem based on your use case. I made my own calculator but there are plenty online.

I drive forest and logging roads that are rough but don't require anything bigger than 33s to get through. Going bigger would just add rotational mass and the Mojave suspension is well tuned to the stock wheel package. My priority is covering a lot of ground comfortably.

I don't regret super deep gears with the MT at all.

Reverse went from way too tall for offroad use to ok.

While not fast, the truck no longer falls on its face shifting 2-3, which has a big ratio gap.

Many situations that would have required 4L can be addressed in first gear of 4H.

6th is actually responsive on the highway. 3k at 73-74 mph.

I have 6k miles after the regear. 4k have been off pavement. No idea of mpg impact. I didn't buy it for economy.

Regearing is a fairly expensive proposition. I wouldn't bother with a small change to 4.56. If you go 5.13 or 5.38 and decide you've overdone it, you can always go up to 35 or 37 tires.

100% this. I had a manual JLUR and was going to go 5.38 gears on it with just 35s. Horrible factory gearing ratios in the manual combined with low torque motor was not fun. I am a huge manual fan but didn’t like it stock at all. I traded it in for the Gladiator right before committing to the regear. Good to hear your experience was what I was expecting.

I have an auto in my Gladiator and regeared to 5.38 for 37s and it’s perfect.

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