Why is regearing important?
JK Junkie
Joined: Jul 2010
Posts: 2,873
Likes: 0
From: 36* N
A trusted mechanic who is comfortable and confident with their gear work would be my first suggestion. Don't get anyone to do it who isn't comfortable with doing it- no "one stop" shops if you'd like your gears to last and serve you well.
*IF*, and only if, you have a really good dealer then that's an option. Again- make sure you talk to the guy who is going to do it. Anyone can install gears but setting the tolerances where they belong is the important part.
*IF*, and only if, you have a really good dealer then that's an option. Again- make sure you talk to the guy who is going to do it. Anyone can install gears but setting the tolerances where they belong is the important part.
JK Newbie
Joined: Apr 2013
Posts: 51
Likes: 0
From: Western NC
Great info and advice. Mine were done by a guy who was a Jeep dealer service tech for 17 years. He now works on Jeeps as a passion/hobby/business. They cost me $1100 including the gears. They MUST be done by someone who can set the tolerances!
JK Super Freak
Joined: Oct 2010
Posts: 1,114
Likes: 2
From: North Hampton, NH
From some who's had 35s for 2 years and 37s for 18 months with 3.73 auto with the 3.8.....not worth regearing IMO. I'm 95% on roads, no highway, rare offroading (not my choice). Flashpaq was all I needed...
JK Freak
Joined: Jan 2012
Posts: 910
Likes: 1
From: chilliwack BC
[QUOTE="MarbleheadGuy;3855123"]From some who's had 35s for 2 years and 37s for 18 months with 3.73 auto with the 3.8.....not worth regearing IMO. I'm 95% on roads, no highway, rare offroading (not my choice). Flashpaq was all I needed...[/QUOTE
Your a patient man.
Your a patient man.
JK Newbie
Joined: Mar 2014
Posts: 3
Likes: 0
From: Longmont, CO
I have a 'new to me' 07 Unlimited Rubicon. I was wondering if I could reuse the factory Rubicon lockers if I regear. I'm sure that aftermarket lockers are generally better. I think for my application (35"s with 90% highway and a couple of trips to Moab and local trails) they should be sufficient.
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 165
From: Austin <--> Colorado Springs
I have a 'new to me' 07 Unlimited Rubicon. I was wondering if I could reuse the factory Rubicon lockers if I regear. I'm sure that aftermarket lockers are generally better. I think for my application (35"s with 90% highway and a couple of trips to Moab and local trails) they should be sufficient.
Verify that he is comfortable with rubicon axles. There are quite a few posts from people saying "just regeared, and now my lockers don't work!!!" or " Won't disengage!!" It has something to do with the position of the plunger, and would be worth a few minutes of your time to research it.
JK Enthusiast
Joined: May 2013
Posts: 100
Likes: 0
From: Seattle
Old tire size/new tire size*existing gear ratio=effective gear ratio
31.5/34.5*3.73=3.4:1 Would feels like ... meh.
New tire size/old tire size*existing gear ratio=equivalent gear ratio
34.5/31.5*3.73=4.08:1 Would feel like it did with the original tires ... kinda.
31.5/34.5*3.73=3.4:1 Would feels like ... meh.
New tire size/old tire size*existing gear ratio=equivalent gear ratio
34.5/31.5*3.73=4.08:1 Would feel like it did with the original tires ... kinda.
JK Enthusiast
Joined: May 2013
Posts: 100
Likes: 0
From: Seattle
But wait, there's more!
New ratio/existing ratio*old tire size=projected equivalent tire size
4.56/3.73*31.5=38.5
Of course you can't really go on that completely. There are other factors. Increased mass, wind drag, friction to name a few.
New ratio/existing ratio*old tire size=projected equivalent tire size
4.56/3.73*31.5=38.5
Of course you can't really go on that completely. There are other factors. Increased mass, wind drag, friction to name a few.