Ecodiesel Rubicon suspension swap

Cypher

Well-Known Member
First Name
J
Joined
Feb 8, 2018
Messages
2,144
Reaction score
1,894
Location
AZ
Vehicle(s)
2021 JLUR Eco-Diesel now. 18, 19, 20 JLUR 3.6 old.
Occupation
Cybersecurity Leader
Vehicle Showcase
5
I will be swapping my eco-diesel rubicon suspension for a 392 suspension soon. it looks like I should net between 1" and 1.5" lift from that. I would have done it by now but having some unexpected health issues that have slowed me down.

eventually ill move to a larger lift, but want to see how well this works for a year or so on 35s before I move to 37s etc.

i will post my takeoffs for sale once swap is completed.
Advertisement

 

Kevin Mojito

Well-Known Member
First Name
Kevin
Joined
Aug 28, 2018
Messages
624
Reaction score
574
Location
Washington
Vehicle(s)
2019 JLUR Moijto 2005 TJ AEV Hemi
I will be swapping my eco-diesel rubicon suspension for a 392 suspension soon. it looks like I should net between 1" and 1.5" lift from that. I would have done it by now but having some unexpected health issues that have slowed me down.

i will post my takeoffs for sale once swap is completed.
Any chance you could measure the free length of the springs. Compare the height's.

JL JT Rub Mojave.jpg
 

Kevin Mojito

Well-Known Member
First Name
Kevin
Joined
Aug 28, 2018
Messages
624
Reaction score
574
Location
Washington
Vehicle(s)
2019 JLUR Moijto 2005 TJ AEV Hemi

blnewt

Well-Known Member
First Name
Brad
Joined
Oct 8, 2018
Messages
4,934
Reaction score
5,176
Location
New Mexico
Vehicle(s)
2019 Jeep JL V6 SportS, (Retired 74 CJ-5, 80 CJ-7)
Any chance you could measure the free length of the springs. Compare the height's.

JL JT Rub Mojave.jpg
Would be interested to see some of the new Rubicon XR springs for comparison sake, should be a hot ticket for sure!
 

Cypher

Well-Known Member
First Name
J
Joined
Feb 8, 2018
Messages
2,144
Reaction score
1,894
Location
AZ
Vehicle(s)
2021 JLUR Eco-Diesel now. 18, 19, 20 JLUR 3.6 old.
Occupation
Cybersecurity Leader
Vehicle Showcase
5
Any chance you could measure the free length of the springs. Compare the height's.

JL JT Rub Mojave.jpg
I will take measurements of everything off the 392 suspension once I pick it up.

Do you happen to have the stock diesel JLUR measurements? I would like to make sure its actually taller before I pull mine apart. If its not taller springs ill just swap shocks.
 

Shaffer9

Member
Joined
May 10, 2021
Messages
12
Reaction score
10
Location
Louisiana
Vehicle(s)
2020 JL Rubicon
@Kevin Mojito what lift height would you expect with the 3.0 diesel (601 & 667) springs on a 2.0L non etorque Rubicon? I would really love to find a set of these for a decent price and snag a cheap inch or so...
 

Cypher

Well-Known Member
First Name
J
Joined
Feb 8, 2018
Messages
2,144
Reaction score
1,894
Location
AZ
Vehicle(s)
2021 JLUR Eco-Diesel now. 18, 19, 20 JLUR 3.6 old.
Occupation
Cybersecurity Leader
Vehicle Showcase
5
@Kevin Mojito what lift height would you expect with the 3.0 diesel (601 & 667) springs on a 2.0L non etorque Rubicon? I would really love to find a set of these for a decent price and snag a cheap inch or so...
I think my 2021 eco-diesel rubicon actually came with the 2.0 rubicon springs. built at the end of July, I have actually noticed quite a few diesel rubicon take offs are listing these same part part numbers. thats why the 392 spring swap is so appealing to me for a bit more lift.

Rear: 3601AA
Front: 7622AD
 

Kevin Mojito

Well-Known Member
First Name
Kevin
Joined
Aug 28, 2018
Messages
624
Reaction score
574
Location
Washington
Vehicle(s)
2019 JLUR Moijto 2005 TJ AEV Hemi
My JLUR on the scale 5100 lbs. Stock 3660AC / 3661AC springs with 2.5 spacer.
Fender height pre winch
Driver - 44 1/4
Pass - 43 3/4
After winch
Driver - 43 1/4
Pass - 43 1/2

JLUR 3.0 3667AC springs Removed 1/2 spacer, now at 2" spacer same winch set up.
Driver - 44 1/4
Pass - 44 1/2

Free spring height
3660AC - 18 1/4
3661 AC - 18 3/4
3667AC - 19 1/4

This info is back on page 2 or 3 . The New 2021 3.0 are coming with the 2.0 springs. I have not tried the those yet. I can only comment on the 2020 667 AC springs.
 

Cypher

Well-Known Member
First Name
J
Joined
Feb 8, 2018
Messages
2,144
Reaction score
1,894
Location
AZ
Vehicle(s)
2021 JLUR Eco-Diesel now. 18, 19, 20 JLUR 3.6 old.
Occupation
Cybersecurity Leader
Vehicle Showcase
5
My JLUR on the scale 5100 lbs. Stock 3660AC / 3661AC springs with 2.5 spacer.
Fender height pre winch
Driver - 44 1/4
Pass - 43 3/4
After winch
Driver - 43 1/4
Pass - 43 1/2

JLUR 3.0 3667AC springs Removed 1/2 spacer, now at 2" spacer same winch set up.
Driver - 44 1/4
Pass - 44 1/2

Free spring height
3660AC - 18 1/4
3661 AC - 18 3/4
3667AC - 19 1/4

This info is back on page 2 or 3 . The New 2021 3.0 are coming with the 2.0 springs. I have not tried the those yet. I can only comment on the 2020 667 AC springs.
what size tires, and exactly where did you measure from? I will try amd get the same measurements from mine.

really surprised at how nice the 2021 diesel with the 2.0 spring rides, but it is a much smaller spring and wont handle weight well. I have a feeling the 392 takeoffs on mine will be a decent lift.

mine is 100% stock now. (33" tires as well) measured at the center rivet.
front driver 38 1/4" bottom of fender, 40" fender split
front passenger 38 1/4" bottom of fender, 40" fender split
rear driver 39" bottom of fender, 40 3/4" fender split
rear passenger 39" bottom of fender, 40 3/4" fender split

10 3/4" top center of axle tube to bottom of spring perch.
 

Kevin Mojito

Well-Known Member
First Name
Kevin
Joined
Aug 28, 2018
Messages
624
Reaction score
574
Location
Washington
Vehicle(s)
2019 JLUR Moijto 2005 TJ AEV Hemi
I have painted fenders. I measure at the seam black lip to color. That's with a BFG 315.

I'm a few cocktail's in............. Better to answer tomorrow 🍻
 

Chief20

Well-Known Member
First Name
J
Joined
Sep 18, 2020
Messages
161
Reaction score
42
Location
New York
Vehicle(s)
Wrangler Jl
Hi, I got a rubicon suspension from a rubicon with a diesel engine with tow package and steel bumpers with sky touch.
The spring numbers are
68253665AD
68253665AD
68253601AA
68253601AA

Im going to use the 3665ad for the front
And then 3601aa for the rear then put a 3/4 spacer lift on the rear?
 
Last edited:
Advertisement

Tazer JL - Z Automotive
 
Advertisement
Top