2021 ecodiesel badge

JLDIESEL

Well-Known Member
First Name
Kyle
Joined
Jul 27, 2019
Messages
167
Reaction score
395
Location
California
Vehicle(s)
JLURD
I had an appointment to regear to 4.88s but cancelled. If she stays, I’ll regear pretty soon. I also went to s&b again... they are almost ready with the functioning prototype intake.





Advertisement

 

SolarWizard

Well-Known Member
Joined
Dec 11, 2019
Messages
273
Reaction score
210
Location
SD, CA / Tampa, FL
Vehicle(s)
Model Y Performance / Diesel Gladiator soon
Occupation
energy management tech for homes and businesses
I had an appointment to regear to 4.88s but cancelled. If she stays, I’ll regear pretty soon. I also went to s&b again... they are almost ready with the functioning prototype intake.
how is the pickup and highway cruising with the stock gearing? There’s an “expert” over on my forum saying 3.73 is overkill for stock tires
 

Compression-Ignition

Well-Known Member
First Name
Roy
Joined
Nov 12, 2019
Messages
510
Reaction score
522
Location
Eastern Washington
Vehicle(s)
2020 JLUR 3.0 Diesel (FIRECRACKER RED), 2020 6.7L F350, 2011 QX56, 2005 5.9 Cummins
how is the pickup and highway cruising with the stock gearing? There’s an “expert” over on my forum saying 3.73 is overkill for stock tires
IMO 3.73's and the factory 285/70r17's is about damn perfect. The 3.0L and 8 speed rips with that combination. Absolutely rips. For a Wrangler anyway. Having said that, I'll concede that a taller gear would be great to coax out a few more mpg's. But on the highway is the only place the taller gears would make more sense to me.
 

JLURD

Well-Known Member
Joined
Nov 30, 2017
Messages
1,386
Reaction score
1,751
Location
Alaska
Vehicle(s)
2018 Compass Latitude 6MT, 2020 JLUR 3.0
how is the pickup and highway cruising with the stock gearing? There’s an “expert” over on my forum saying 3.73 is overkill for stock tires
It’s still plenty quick with the 3.73 pushing 37s. Cruises in 8th just fine in the highway in the mid-60s too.
 
OP

No Spark V6

Active Member
Joined
Aug 1, 2020
Messages
38
Reaction score
38
Location
Chicago NW burbs
Vehicle(s)
2021 Rubi 3.0 GCM
  • Thread starter
  • Thread Starter
  • #21
Congrats on your Jeep delivery! The diesel will be glorious! Can you please confirm the axle ratio for us?? Is it 3.73 or 4.10?? Thanks in advance and congrats again!
I finally took delivery and got mine home!

I dont see anything on the axle indicating one ratio or the other. Anyone know if there are markings on the outside? I thought I saw someone mentioning that it was on the outside from the factory. Otherwise I'll have to jack it up tomorrow and spin a wheel and count driveshaft rotations.
 

PillowFightr

Well-Known Member
First Name
Sam
Joined
Jun 26, 2020
Messages
114
Reaction score
128
Location
Arizona
Vehicle(s)
2021 Jeep Wrangler Rubicon Diesel
Occupation
Data Center Engineer
I finally took delivery and got mine home!

I dont see anything on the axle indicating one ratio or the other. Anyone know if there are markings on the outside? I thought I saw someone mentioning that it was on the outside from the factory. Otherwise I'll have to jack it up tomorrow and spin a wheel and count driveshaft rotations.
Congrats on taking delivery! And thanks for checking, someone said that the ratio is written on the axle housing.
 

overboosted

Well-Known Member
Joined
Jul 27, 2020
Messages
54
Reaction score
93
Location
717 PA
Vehicle(s)
2014 JKU(sold) 2021 JLURD
I also climbed under mine with a flashlight and couldn't find any markings. I would bet it's the same 3.73s as previous year, but don't know for certain. I just know I love it! The torque is addicting. I had a 2004 Ram with the 5.9 Cummins waaay back, and then a 3.6 JKU in 2014, so I have some things to compare this to. This 3.0 is fun and I don't know why anyone that can afford it wouldn't get it.
 

BuffaloBill

Well-Known Member
First Name
Bill
Joined
Oct 14, 2019
Messages
209
Reaction score
271
Location
WI
Vehicle(s)
2018 Wrangler, 2014 Ram 1500 EcoDiesel 2020 JLUR Ecodiesel
Are you running the stock 33” tires? If so, I believe at 60mph, the tach will show about 1750rpm with 4.10, or about 1590 with 3.73.
 
OP

No Spark V6

Active Member
Joined
Aug 1, 2020
Messages
38
Reaction score
38
Location
Chicago NW burbs
Vehicle(s)
2021 Rubi 3.0 GCM
  • Thread starter
  • Thread Starter
  • #27
Since that implies 3.73s, why did the MPG rating go down by 2 MPG versus 2020?
Don't have that answer unfortunately. It's a stretch but I did notice I got the wildpeak mud terrains when I expected the K02s. I'm not necessarily unhappy with these but I was interested to see how the K02s were. Regardless, I wonder if the wildpeaks are heavier or contribute to the lower mpg?
 

overboosted

Well-Known Member
Joined
Jul 27, 2020
Messages
54
Reaction score
93
Location
717 PA
Vehicle(s)
2014 JKU(sold) 2021 JLURD
Don't have that answer unfortunately. It's a stretch but I did notice I got the wildpeak mud terrains when I expected the K02s. I'm not necessarily unhappy with these but I was interested to see how the K02s were. Regardless, I wonder if the wildpeaks are heavier or contribute to the lower mpg?
My Rubicon came with K02s, weird.
 

Advertisement




Bestop
 



Advertisement
Top