Eco Diesel lift

[Mac Attack]

This is why I went with coilovers. All 4 corners were dialed in and I didn’t have to worry about the Diesel engine weight or things being in different places on gas vs diesel. Plus there were no diesel specific lift kits available at the time.

Brian

Which coilovers did you go with? Size?

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[Pizziola29]

Which coilovers did you go with? Size?

Adding here as I did coils on front . 400 -12” tops and 400 16” lowers on kings. King did mine at their shop so they’re dialed in front and rears. Rides way better then the non tuned to my 2020jt I had last year. Rides night and day over my gas jt. Sits about 5.5” inch lift.

 

[CrazyCooter]

Adding here as I did coils on front . 400 -12” tops and 400 16” lowers on kings. King did mine at their shop so they’re dialed in front and rears. Rides way better then the non tuned to my 2020jt I had last year. Rides night and day over my gas jt. Sits about 5.5” inch lift.

I'm far from a spring rate expert, but yours is about what I would have guessed....200lbin.

Looks like your fronts are sitting on the crossover rings though? Springs may have sagged a bit and need a little preload added?

 

[Pizziola29]

I'm far from a spring rate expert, but yours is about what I would have guessed....200lbin.

Looks like your fronts are sitting on the crossover rings though? Springs may have sagged a bit and need a little preload added?

Yeah this was during install and it final. I will take an updated pic. Ended up about an inch of preload. Like I said the king coils on my gas jt were not dialed in like these ones on my diesel and it drives so much better.

 

[CrazyCooter]

Yeah this was during install and it final. I will take an updated pic. Ended up about an inch of preload. Like I said the king coils on my gas jt were not dialed in like these ones on my diesel and it drives so much better.

What about noise from the sliders? I did a Double Throwdown on a JK and a Genright w/Kings on an LJ last year and wasn't impressed with the noise as the sliders moved over the shock bodies.

I would love the ability to tune spring rates to my liking, but no tolerance to noises from shock hiems and spring sliders.

 

[Pizziola29]

What about noise from the sliders? I did a Double Throwdown on a JK and a Genright w/Kings on an LJ last year and wasn't impressed with the noise as the sliders moved over the shock bodies.

I would love the ability to tune spring rates to my liking, but no tolerance to noises from shock hiems and spring sliders.

Great question! I used the king ones on my gas and they were so noisy! Rebel said to try the Agm sliders and not a peep!

 

[ArloGuthroJeep]

Ya, not a "diesel tuned" spring per se, but the diesel equipped jt is 400lb heavier on the front axle than a gasser.

I saw in another thread from a lift manufacturer (forgot which one) that they said the 400 lbs was fairly evenly distributed front/rear. Do you know otherwise or just speculating?

 

[Pizziola29]

I saw in another thread from a lift manufacturer (forgot which one) that they said the 400 lbs was fairly evenly distributed front/rear. Do you know otherwise or just speculating?

When we were weighing mine on all 4 corners for the shocks and springs the front stock was a touch over 400 lbs more than my gas JT. the rear was 8 lbs more which I take to the def tank.

 

[CrazyCooter]

I saw in another thread from a lift manufacturer (forgot which one) that they said the 400 lbs was fairly evenly distributed front/rear. Do you know otherwise or just speculating?

Just speculating. Heard/read 400lb increase in a lot of places and most had to go on the front axle since almost everything heavy is located over the front axle. I wont know for sure personally till I can verify when mine gets here.

 

[guarnibl]

I'll report back once my franken lift is installed (not going coil overs). I'm running 2.5" King adjustable reservoir shocks, King 2.0 air bumps, Rock Krawler diesel JL springs up front, Rock Krawler JT springs out back. The rest is the Currie JT kit minus the front sway bar since I didn't want to lose the front e-disco.

I'm expecting to sit at 3 1/2" of lift. Running 37's. Prefer to keep low COG. I am halfway expecting to have to tune the shocks though.

 

[ArloGuthroJeep]

Just speculating. Heard/read 400lb increase in a lot of places and most had to go on the front axle since almost everything heavy is located over the front axle. I wont know for sure personally till I can verify when mine gets here.

I agree it seems logical, but I could see other small changes affecting it such as:
1) Weight of transmission? If so that is more balanced F/R.
2) Distribution of engine over front axle (is it biased to the rear?)
3) Were other items relocated (it is fairly common to see batteries no longer located in the engine compartment).

 

[CrazyCooter]

I agree it seems logical, but I could see other small changes affecting it such as:
1) Weight of transmission? If so that is more balanced F/R.
2) Distribution of engine over front axle (is it biased to the rear?)
3) Were other items relocated (it is fairly common to see batteries no longer located in the engine compartment).

Difference in trans cant be much and they both have exhaust systems.......Eco probably a little heavier from the DPF.

The Eco has a turbo, exhaust manifolds/crossover/up pipes likely heavier for a turboed application, CAC cooler w/piping, and probably a larger cooling system containing more coolant than a Pentastar?

Wiper washer tank got moved to the rear of the engine bay, but batteries are still in near the same relative locations albeit a little closer tot he firewall.

 

[CerOf]

Holds more oil. Every little thing will add up.

that reminds me, I need to stick to my diet. It’s added up fast staying at home this last year.

 

[dean*1]

Even though it goes against everything I believe......I'm planning on installing a small spacer lift with shock extensions until I see a proper spring rate for the diesel equipped trucks.

I agree, a cheap spacer lift might be what im after aswell...at least until there are some options for the eco diesel jt's

 

[kooltoys]

this is my real world experience, 21 JTD(my truck came stock with 20" wheels) I was not happy with the 1.5" leveling kit. I installed teraflex 3.5" JT spring 1873000 in the front and 1873100 in the rear. I have a steal knock off 10th anniv. bumper and smittybuilt 9500lb winch.. the driver side is level at 14.5" over the top wheel. passenger side however is 3/4" lower in the front and 1/4" lower in the rear.. I am going to drive it a month and see if it settles down some. I believe that it I raise the passenger front a 1/2" that the drivers rear will counter balance the front passeneger and maybe level out that 1/4" difference the rear has now

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