Sponsored

Sport, Sport S or Sahara on 37's or larger

TJMJLWRANGLER

Member
First Name
Ethan
Joined
Oct 8, 2018
Threads
2
Messages
8
Reaction score
20
Location
San Diego CA
Website
www.ethanfickling.com
Vehicle(s)
2018 JL Sport S Wrangler
Occupation
Automotive Design Engineer
Vehicle Showcase
1
I have a Sport S with the LSD Dana 44 Rear with stock Gears on 37s.
It looses all the benifits of the 8spd and zippyness. Gets stuck in 4th or 5th on the highway.
In low 4 I've also got to the point where it doesn't have enough torque to climb a very (extreme) rock face either. It would have burn't up the gearbox before spinning the tires.
So after testing on the road and offroad, I am going to re-gear to get the factory feel and zippyness back. It will also be better fuel economy on the highway and easier on the motor if it can cruise at 75mph in 7th or 8th gear again.
Dana offers 4.88 and 5.13. They recommend 4.88, but im seriously considering going 5.13 for the extra low in low 4 and even more zippyness.

In addition, If you need high clearance flares, I am selling the aftermarket one's fitted to mine. They will fit with 37's and stock suspension, see no wrap photos in my garage. See pics of car in yellow wrap on my garage. Inbox me for details if you are interested.

IMG_20181104_122933.jpg
 

Sponsored

Mr. Beef Chief

Well-Known Member
First Name
Sam
Joined
Mar 16, 2018
Threads
3
Messages
96
Reaction score
161
Location
Boynton Beach, FL
Vehicle(s)
2018 Wrangler JL Sport
The M200 is such a new axle. We don't know much about durability. Hopefully it hold up to 37's
It is new and only time will tell but my budget for new axles is in the works. In the meantime they will be fine for what I'm doing. I don't know about you but I'm not doing much crawling in Fl.
 

Maverick909

Well-Known Member
First Name
Brian
Joined
Jan 15, 2019
Threads
35
Messages
4,026
Reaction score
5,635
Location
Inland Empire
Website
www.instagram.com
Vehicle(s)
2018 JLU Sporticon, 1976 GMC K15 Lifted on 35's
Build Thread
Link
Occupation
Electrician/ Industrial Furnace MFG
Clubs
 
good information. anyone running 37s with the 6pd ? im in debate that i am going to go with the terra flex lift and 35's on my sport. i do have the LSD D44 upgraded rear axle but i am super concerned with the 3.45 gears and the 6spd thinking of either 4.10s with 35's and if i go the route of 37's i am leaning towards the 4.88 gears any thoughts?
 

Sharkbite22

Well-Known Member
Joined
May 28, 2018
Threads
1
Messages
168
Reaction score
680
Location
NC
Vehicle(s)
2018 JL Sport
good information. anyone running 37s with the 6pd ? im in debate that i am going to go with the terra flex lift and 35's on my sport. i do have the LSD D44 upgraded rear axle but i am super concerned with the 3.45 gears and the 6spd thinking of either 4.10s with 35's and if i go the route of 37's i am leaning towards the 4.88 gears any thoughts?
I have a 6 speed 2 door sport with D44 and 35's. It was a dog with the stock gears, 6th gear was useless unless you were going down hill on the interstate. I went with 488's within a couple of weeks and it is fantastic with the 35's. I had 488's on my JK with 33's so I had already planned to go at least 488 on the JL. I use 6th gear all the time now and it has a little pep back. Crawling in 4lo is great with this setup and it still averages 18-19 mpg.
 

Maverick909

Well-Known Member
First Name
Brian
Joined
Jan 15, 2019
Threads
35
Messages
4,026
Reaction score
5,635
Location
Inland Empire
Website
www.instagram.com
Vehicle(s)
2018 JLU Sporticon, 1976 GMC K15 Lifted on 35's
Build Thread
Link
Occupation
Electrician/ Industrial Furnace MFG
Clubs
 
I have a 6 speed 2 door sport with D44 and 35's. It was a dog with the stock gears, 6th gear was useless unless you were going down hill on the interstate. I went with 488's within a couple of weeks and it is fantastic with the 35's. I had 488's on my JK with 33's so I had already planned to go at least 488 on the JL. I use 6th gear all the time now and it has a little pep back. Crawling in 4lo is great with this setup and it still averages 18-19 mpg.
Awesome information! I will keep this in mind as I start my build thank you for your input!
 

Javikid

Well-Known Member
First Name
Javier
Joined
Dec 13, 2018
Threads
22
Messages
203
Reaction score
405
Location
Orlando
Vehicle(s)
2022 Jeep JL Rubicon 4xe
A local dealer had 4 Sport S with 37s 20s combo with the mopar 2 inch lift. They look amazing.

20190206_121325.jpg


20190206_121609.jpg


20190206_122804.jpg


20190206_123717.jpg
 

Sponsored

FERGOTTI

Active Member
First Name
Matt
Joined
Jan 13, 2019
Threads
0
Messages
25
Reaction score
34
Location
OKC
Vehicle(s)
2018 JLU Sport S, 2016 F150
I have the RC 3.5" coil lift with upgraded control arms and the modified front drive shaft. I am pretty sure it is a similar lift height to the Mopar 2" (3.5" for non-Rubicons). I would for sure go with 37s, no matter what. I barely rub at full turn with some good force coming out of a driveway or on a rock, and on one corner only. I have not gotten to full articulation, but I know it would hit somewhere I'm sure w/out upgrading my fenders (planned).

Here's some various pics to show the height and clearance - the pic on dirt was aired down to ~16psi.

I don't know the offset of my wheels, but I think it's really low, maybe -44ish, as my tires stick out past the fenders about 3-4".

IMG_0669.jpg


IMG_0784.jpg


IMG_0831.jpg


IMG_0853.jpg


IMG_0852.jpg


IMG_0669.jpg
Got the Oracle halos myself love them
 

Therby

Well-Known Member
First Name
Taylor
Joined
Feb 16, 2019
Threads
4
Messages
480
Reaction score
713
Location
Ontario, Canada
Vehicle(s)
2018 JL sport 2dr
Vehicle Showcase
1
Has anyone really wheeled a JL with the stock m186 axle and 37s yet? Im going to throw some money at it and donthe artec truss and evo C gussets. But im still only on 35s. I’d like to go 37s and leave the front open and put a locker in the rear.
 

Billet_JLU

Well-Known Member
First Name
Austin
Joined
Jun 3, 2018
Threads
11
Messages
253
Reaction score
187
Location
Ohio
Vehicle(s)
2018 JLU sport s 1999 Cherokee Sport
Occupation
Mechanical Engineer
Has anyone really wheeled a JL with the stock m186 axle and 37s yet? Im going to throw some money at it and donthe artec truss and evo C gussets. But im still only on 35s. I’d like to go 37s and leave the front open and put a locker in the rear.
I bought some rubicon take off axles and 37’s. Unfortunately after the deal was make the shipping didn’t work out so now I have 37’s and my stock axles. At this point I think I’ll throw the 37’s on and see what happens. If it breaks maybe get the UD44. Or if I win MetalCloak’s giveaway this month get the UD44 before the m186 breaks :LOL: I am interested to see how the m186 holds up though since the ring gear is bigger than the d30 and the gears are cut different.
 

Therby

Well-Known Member
First Name
Taylor
Joined
Feb 16, 2019
Threads
4
Messages
480
Reaction score
713
Location
Ontario, Canada
Vehicle(s)
2018 JL sport 2dr
Vehicle Showcase
1
I bought some rubicon take off axles and 37’s. Unfortunately after the deal was make the shipping didn’t work out so now I have 37’s and my stock axles. At this point I think I’ll throw the 37’s on and see what happens. If it breaks maybe get the UD44. Or if I win MetalCloak’s giveaway this month get the UD44 before the m186 breaks :LOL: I am interested to see how the m186 holds up though since the ring gear is bigger than the d30 and the gears are cut different.
damn that sucks about the rubi axles, id love to find a set also.

true it should be interesting for the m186. You see lots of jk dana 30s on 37 and they say its doable.

as you said the m186 is supposedly stronger then previous JK. Im going to truss the m186 with the artec so it hopefully adds some strength with the new FAD etc.

ill be staying on 35s for awhile, but will test the dana 30 with 37s and see how that goes before i go to a UD44
 

Billet_JLU

Well-Known Member
First Name
Austin
Joined
Jun 3, 2018
Threads
11
Messages
253
Reaction score
187
Location
Ohio
Vehicle(s)
2018 JLU sport s 1999 Cherokee Sport
Occupation
Mechanical Engineer
damn that sucks about the rubi axles, id love to find a set also.

true it should be interesting for the m186. You see lots of jk dana 30s on 37 and they say its doable.

as you said the m186 is supposedly stronger then previous JK. Im going to truss the m186 with the artec so it hopefully adds some strength with the new FAD etc.

ill be staying on 35s for awhile, but will test the dana 30 with 37s and see how that goes before i go to a UD44
Yeah this may be the path I take now. I’m sure it can do it being easy but if it popped I wouldn’t be surprised.
Sponsored

 
 



Top